{"id":117032,"date":"2021-02-09T03:00:33","date_gmt":"2021-02-09T11:00:33","guid":{"rendered":"https:\/\/unit42.paloaltonetworks.com\/?p=117032"},"modified":"2021-02-09T02:00:15","modified_gmt":"2021-02-09T10:00:15","slug":"bendybear-shellcode-blacktech","status":"publish","type":"post","link":"https:\/\/unit42.paloaltonetworks.com\/ja\/bendybear-shellcode-blacktech\/","title":{"rendered":"BendyBear: \u30b5\u30a4\u30d0\u30fc\u30b9\u30d1\u30a4\u30b0\u30eb\u30fc\u30d7BlackTech\u3068\u30ea\u30f3\u30af\u3055\u308c\u305f\u65b0\u3057\u3044\u4e2d\u56fd\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9"},"content":{"rendered":"<h2>\u6982\u8981<\/h2>\n<p>\u975e\u5e38\u306b\u9806\u5fdc\u6027\u304c\u9ad8\u304f\u3001\u9ad8\u5ea6\u306b\u6d17\u7df4\u3055\u308c\u305f\u300110,000\u30d0\u30a4\u30c8\u3092\u8d85\u3048\u308b\u30de\u30b7\u30f3\u30b3\u30fc\u30c9\u3002\u305d\u308c\u304c\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u8105\u5a01\u30a4\u30f3\u30c6\u30ea\u30b8\u30a7\u30f3\u30b9\u30ea\u30b5\u30fc\u30c1\u30c1\u30fc\u30e0 Unit 42\u306e\u30ea\u30b5\u30fc\u30c1\u30e3\u30fc\u304c\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u300c\u718a\uff08Bear\uff09\u300d\u306e\u30b3\u30fc\u30c9\u5206\u6790\u4e2d\u306b\u906d\u9047\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u305d\u306e\u30b3\u30fc\u30c9\u306e\u52d5\u4f5c\u3068\u6a5f\u80fd\u306f\u3001\u65e9\u3051\u308c\u30702009\u5e74\u306b\u306f\u30a2\u30af\u30c6\u30a3\u30d6\u3060\u3063\u305fWaterBear\u30de\u30eb\u30a6\u30a7\u30a2\u30d5\u30a1\u30df\u30ea\u306e\u305d\u308c\u3068\u5f37\u304f\u76f8\u95a2\u3057\u3066\u3044\u307e\u3059\u3002<a href=\"https:\/\/www.trendmicro.com\/en_us\/research\/19\/l\/waterbear-is-back-uses-api-hooking-to-evade-security-product-detection.html\">Trend Micro<\/a>\u3001<a href=\"https:\/\/blogs.jpcert.or.jp\/ja\/2020\/02\/japan-security-analyst-conference-2020-1.html\">TeamT5<\/a>\u306b\u3088\u308b\u5206\u6790\u3067\u3001WaterBear\u306f\u591a\u9762\u7684\u306a\u30b9\u30c6\u30fc\u30b82\u30a4\u30f3\u30d7\u30e9\u30f3\u30c8\u3067\u3042\u308a\u3001\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u3001\u30b7\u30a7\u30eb\u30a2\u30af\u30bb\u30b9\u3001\u753b\u9762\u30ad\u30e3\u30d7\u30c1\u30e3\u305d\u306e\u307b\u304b\u591a\u69d8\u306a\u6a5f\u80fd\u304c\u3042\u308b\u3053\u3068\u304c\u660e\u3089\u304b\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u672c\u30de\u30eb\u30a6\u30a7\u30a2\u306f\u30b5\u30a4\u30d0\u30fc\u30b9\u30d1\u30a4\u30b0\u30eb\u30fc\u30d7<a href=\"https:\/\/www.taiwannews.com.tw\/en\/news\/3991160\">BlackTech<\/a>\u3068\u95a2\u9023\u4ed8\u3051\u3089\u308c\u3066\u3044\u307e\u3059\u3002BlackTech\u306f\u8105\u5a01\u30ea\u30b5\u30fc\u30c1\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306e\u591a\u304f\u304c\u4e2d\u56fd\u653f\u5e9c\u3068\u95a2\u4fc2\u3057\u3066\u3044\u308b\u3068\u8a55\u4fa1\u3057\u3066\u3044\u308b\u30b0\u30eb\u30fc\u30d7\u3067\u3001\u6700\u8fd1\u884c\u308f\u308c\u305f\u8907\u6570\u306e\u5bfe\u6771\u30a2\u30b8\u30a2\u653f\u5e9c\u653b\u6483\u306b\u8cac\u4efb\u304c\u3042\u308b\u3068\u8003\u3048\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306eWaterBear\u3068\u306e\u985e\u4f3c\u6027\u3084\u30b3\u30fc\u30c9\u306e\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30c3\u30af\u6027\u80fd\u304b\u3089\u3001Unit 42 \u3067\u306f\u3053\u306e\u65b0\u3057\u3044\u4e2d\u56fd\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u300cBendyBear\u300d\u3068\u547c\u3093\u3067\u3044\u307e\u3059\u3002BendyBear\u306f\u30012020\u5e74\u306b\u9ad8\u5ea6\u3067\u6301\u7d9a\u7684\u306a\u8105\u5a01\u653b\u6483\u8005\uff08APT\uff09\u304c\u63a1\u7528\u3057\u305f\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u30b5\u30f3\u30d7\u30eb\u306e\u306a\u304b\u3067\u3082\u3001\u6700\u3082\u6d17\u7df4\u3055\u308c\u3001\u8a2d\u8a08\u304c\u5de7\u307f\u3067\u3001\u691c\u51fa\u56f0\u96e3\u3001\u3068\u3044\u3046\u70b9\u3067\u969b\u7acb\u3063\u305f\u5b58\u5728\u3068\u3044\u3048\u307e\u3059\u3002<\/p>\n<p>BendyBear\u306f\u3001\u30b9\u30c6\u30fc\u30b80\u30a4\u30f3\u30d7\u30e9\u30f3\u30c8\u306e\u305f\u3081\u306ex64\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3067\u3001\u305d\u306e\u552f\u4e00\u306e\u6a5f\u80fd\u306f\u30b3\u30de\u30f3\u30c9&amp;\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\uff08C2\uff09\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u3088\u308a\u5805\u7262\u306a\u30a4\u30f3\u30d7\u30e9\u30f3\u30c8\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b\u3053\u3068\u3067\u3042\u308b\u3053\u3068\u304c\u7279\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u306a\u304a\u300c\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u300d\u306f\u3001\u305d\u306e\u540d\u306b\u300c\u30b7\u30a7\u30eb\u300d\u3053\u305d\u3064\u304d\u307e\u3059\u304c\u3001\u5b9f\u969b\u306b\u30b3\u30de\u30f3\u30c9 \u30b7\u30a7\u30eb\u3092\u751f\u6210\u3059\u308b\u304b\u3069\u3046\u304b\u306b\u95a2\u4fc2\u306a\u304f\u3001\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u76f4\u5f8c\u306b\u6a19\u7684\u306b\u30ed\u30fc\u30c9\u3055\u308c\u308b\u5c0f\u3055\u306a\u30b3\u30fc\u30c9\u306e\u304b\u305f\u307e\u308a\u3092\u8aac\u660e\u3059\u308b\u3055\u3044\u306b\u4f7f\u308f\u308c\u307e\u3059\u300210,000\u30d0\u30a4\u30c8\u4ee5\u4e0a\u3082\u3042\u308bBendyBear\u306f\u3001\u901a\u5e38\u306e\u3082\u306e\u3088\u308a\u8457\u3057\u304f\u5927\u304d\u304f\u3001\u3053\u306e\u30b5\u30a4\u30ba\u3092\u6d3b\u304b\u3057\u3001\u5909\u66f4\u3055\u308c\u305fRC4\u6697\u53f7\u3084\u7f72\u540d\u30d6\u30ed\u30c3\u30af\u691c\u8a3c\u3001\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30c3\u30af\u30b3\u30fc\u30c9\u306a\u3069\u3001\u9ad8\u5ea6\u306a\u6a5f\u80fd\u3068\u5206\u6790\u9632\u6b62\u6280\u8853\u3092\u5b9f\u88c5\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u672c\u7a3f\u3067\u5206\u6790\u3057\u305f\u30b5\u30f3\u30d7\u30eb\u306f\u30012020\u5e748\u6708\u306b<a href=\"https:\/\/www.taiwannews.com.tw\/en\/news\/3991160\">\u53f0\u6e7e\u6cd5\u52d9\u90e8<\/a>\u8abf\u67fb\u5c40\u304c\u516c\u958b\u3057\u305f\u3001\u60aa\u610f\u306e\u3042\u308bC2\u30c9\u30e1\u30a4\u30f3\u3068\u306e\u3064\u306a\u304c\u308a\u306b\u3088\u308a\u8b58\u5225\u3055\u308c\u307e\u3057\u305f\u3002\u306a\u304a\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u306f\u3001\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8 \u30d9\u30af\u30c8\u30eb\u3084\u6f5c\u5728\u7684\u88ab\u5bb3\u8005\u3001\u4f7f\u7528\u76ee\u7684\u306b\u95a2\u3057\u3066\u306e\u8ffd\u52a0\u7684\u60c5\u5831\u306e\u306a\u3044\u72b6\u614b\u3067\u898b\u3064\u304b\u3063\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u88fd\u54c1\u3092\u3054\u5229\u7528\u306e\u304a\u5ba2\u69d8\u306f\u672c\u7a3f\u3067\u6982\u8aac\u3055\u308c\u3066\u3044\u308b\u653b\u6483\u304b\u3089<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/next-generation-firewall\">NGFW<\/a>\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/products\/threat-detection-and-prevention\/dns-security\">DNS\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/a>\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/products\/threat-detection-and-prevention\/web-security\">URL \u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/a>\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/products\/secure-the-network\/wildfire\">WildFire<\/a>\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/cortex\/cortex-xdr\">Cortex XDR<\/a>\u306b\u3088\u308a\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2><a id=\"post-116929-_5lb2ldpzf0wc\"><\/a>\u307b\u304b\u306b\u985e\u3092\u898b\u306a\u3044\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9<\/h2>\n<p>\u30de\u30af\u30ed\u306a\u30ec\u30d9\u30eb\u3067\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u306f\u6b21\u306e\u70b9\u304c\u30e6\u30cb\u30fc\u30af\u3067\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002<\/p>\n<ul>\n<li>\u5909\u66f4\u3055\u308c\u305fRC4\u6697\u53f7\u306b\u3088\u308b\u30c1\u30e3\u30f3\u30af\u3092\u30da\u30a4\u30ed\u30fc\u30c9\u3068\u3057\u3066\u9001\u4fe1\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u5358\u4e00\u306eRC4\u30ad\u30fc\u3067\u30da\u30a4\u30ed\u30fc\u30c9\u5168\u4f53\u3092\u5fa9\u53f7\u3055\u308c\u308b\u3053\u3068\u304c\u306a\u304f\u306a\u308a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u901a\u4fe1\u306e\u6697\u53f7\u5f37\u5ea6\u304c\u5897\u3057\u307e\u3059\u3002<\/li>\n<li>\u81ea\u8eab\u304c\u30c7\u30d0\u30c3\u30b0\u306b\u304a\u304b\u308c\u3066\u3044\u308b\u5146\u5019\u304c\u306a\u3044\u304b\u3069\u3046\u304b\u74b0\u5883\u3092\u660e\u793a\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3057\u3066\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5206\u6790\u304b\u3089\u9003\u308c\u3088\u3046\u3068\u3057\u307e\u3059\u3002<\/li>\n<li>Windows 10\u4e0a\u3067\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u6709\u52b9\u306e\u65e2\u5b58Windows\u30ec\u30b8\u30b9\u30c8\u30ea \u30ad\u30fc\u3092\u5229\u7528\u3057\u3066\u8a2d\u5b9a\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3057\u307e\u3059\u3002<\/li>\n<li>C2\u30b5\u30fc\u30d0\u30fc\u3078\u306e\u63a5\u7d9a\u3092\u8a66\u307f\u308b\u305f\u3073\u306b\u30db\u30b9\u30c8\u306eDNS\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30af\u30ea\u30a2\u3059\u308b\u306e\u3067\u3001\u30db\u30b9\u30c8\u306f\u6bce\u56de\u3001\u60aa\u610f\u306e\u3042\u308bC2\u30c9\u30e1\u30a4\u30f3\u306e\u73fe\u5728\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li>C2\u30b5\u30fc\u30d0\u30fc\u3078\u306e\u63a5\u7d9a\u3054\u3068\u306b\u4e00\u610f\u306a\u30bb\u30c3\u30b7\u30e7\u30f3 \u30ad\u30fc\u3092\u751f\u6210\u3057\u307e\u3059\u3002<\/li>\n<li>\u3088\u304f\u5229\u7528\u3055\u308c\u308b\u30dd\u30fc\u30c8\u756a\u53f7 (443) \u7d4c\u7531\u3067C2\u30b5\u30fc\u30d0\u30fc\u306b\u63a5\u7d9a\u3059\u308b\u3053\u3068\u3067\u3001\u63a5\u7d9a\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u96a0\u3057\u3001\u901a\u5e38\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u5185\u306b\u7d1b\u308c\u8fbc\u3082\u3046\u3068\u3057\u307e\u3059\u3002<\/li>\n<li>\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30c3\u30af \u30b3\u30fc\u30c9\u3092\u63a1\u7528\u3057\u3066\u30b3\u30fc\u30c9\u5b9f\u884c\u4e2d\u306b\u30e9\u30f3\u30bf\u30a4\u30e0 \u30d5\u30c3\u30c8\u30d7\u30ea\u30f3\u30c8\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30e2\u30ea\u5206\u6790\u3092\u963b\u6b62\u3057\u3001\u30b7\u30b0\u30cd\u30c1\u30e3\u5224\u5b9a\u3092\u56de\u907f\u3057\u307e\u3059\u3002<\/li>\n<li>\u691c\u51fa\u56de\u907f\u306e\u305f\u3081\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u30e9\u30f3\u30bf\u30a4\u30e0\u4e2d\u306b\u30d5\u30a1\u30f3\u30af\u30b7\u30e7\u30f3 \u30d6\u30ed\u30c3\u30af\uff08\u30b3\u30fc\u30c9 \u30d6\u30ed\u30c3\u30af\uff09\u3092\u6697\u53f7\u5316\u307e\u305f\u306f\u5fa9\u53f7\u3057\u307e\u3059\u3002<\/li>\n<li>\u4f4d\u7f6e\u72ec\u7acb\u30b3\u30fc\u30c9\uff08PIC\uff09\u3092\u4f7f\u7528\u3057\u3066\u9759\u7684\u5206\u6790\u30c4\u30fc\u30eb\u3092\u56de\u907f\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3053\u308c\u3089\u5404\u6a5f\u80fd\u306e\u8a73\u7d30\u306a\u6280\u8853\u7684\u8a73\u7d30\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<h2><a id=\"post-116929-_htzttzp7krgc\"><\/a>\u6280\u8853\u7684\u8a73\u7d30<\/h2>\n<h4><a id=\"post-116929-_kym5vhjz1ccd\"><\/a><strong>\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306e\u5b9f\u884c<\/strong><\/h4>\n<p>\u3053\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\uff08SHA256\u5024: <span style=\"font-family: 'courier new', courier, monospace;\">64CC899EC85F612270FCFB120A4C80D52D78E68B05CAF1014D2FE06522F1E2D0<\/span>\uff09\u306f\u3001C2\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u30a4\u30f3\u30d7\u30e9\u30f3\u30c8\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b\u6a5f\u80fd\u3092\u6301\u3064\u30b9\u30c6\u30fc\u30b8\u30e3\u306a\u3044\u3057\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u3068\u898b\u306a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5b9f\u884c\u4e2d\u3001\u540c\u30b3\u30fc\u30c9\u306f\u30d0\u30a4\u30c8 \u30e9\u30f3\u30c0\u30e0\u5316\u3092\u4f7f\u7528\u3057\u3066\u305d\u306e\u52d5\u4f5c\u304c\u308f\u304b\u308a\u306b\u304f\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u306b\u3001\u30db\u30b9\u30c8\u306e\u73fe\u5728\u306e\u6642\u523b\u3092\u7591\u4f3c\u4e71\u6570\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u306e\u521d\u671f\u5316\u30b7\u30fc\u30c9\u3068\u3057\u3066\u51fa\u529b\u7d50\u679c\u306b\u8ffd\u52a0\u306e\u6f14\u7b97\u3092\u884c\u3044\u3001\u5f97\u3089\u308c\u305f\u5024\u3067\u305d\u308c\u307e\u3067\u306b\u5b9f\u884c\u3055\u308c\u305f\u30b3\u30fc\u30c9 \u30d6\u30ed\u30c3\u30af\u3092\u4e0a\u66f8\u304d\u3057\u307e\u3059\u3002\u3053\u306e\u30d0\u30a4\u30c8\u64cd\u4f5c\u304c\u540c\u30b3\u30fc\u30c9\u3067\u89b3\u6e2c\u3055\u308c\u305f\u6700\u521d\u306e\u5206\u6790\u9632\u6b62\u6280\u6cd5\u3067\u3059\u3002\u3068\u3044\u3046\u306e\u3082\u30e1\u30e2\u30ea \u30bb\u30b0\u30e1\u30f3\u30c8\u3092\u30c0\u30f3\u30d7\u3057\u3088\u3046\u3068\u3059\u308c\u3070\u3001\u6f14\u7b97\u7d50\u679c\u304c\u4e0d\u6b63\u306a\u3044\u3057\u4e0d\u6b63\u78ba\u306b\u306a\u308b\u304b\u3089\u3067\u3059\u3002\u56f31\u306f\u3001\u30e9\u30f3\u30bf\u30a4\u30e0\u306e\u5b9f\u884c\u524d\u3068\u5b9f\u884c\u4e2d\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306e\u30e1\u30a4\u30f3 \u30a8\u30f3\u30c8\u30ea \u30dd\u30a4\u30f3\u30c8\u306e\u30b5\u30f3\u30d7\u30eb\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_116934\" class=\"wp-caption aligncenter\" style=\"width: 900px;\" aria-describedby=\"caption-attachment-116934\">\n<p><figure id=\"attachment_117035\" aria-describedby=\"caption-attachment-117035\" style=\"width: 1231px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-15-jp.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-117035 size-full lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-15-jp.png\" alt=\"\u3053\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u3067\u306f\u3001\u5de6\u5074\u306b\u5143\u306e\u30a8\u30f3\u30c8\u30ea\u30dd\u30a4\u30f3\u30c8\uff08\u30e9\u30f3\u30bf\u30a4\u30e0\u5b9f\u884c\u524d\uff09\u3001\u53f3\u5074\u306b\u5909\u66f4\u3055\u308c\u305f\u30a8\u30f3\u30c8\u30ea\u30dd\u30a4\u30f3\u30c8\uff08\u30e9\u30f3\u30bf\u30a4\u30e0\u5b9f\u884c\u4e2d\uff09\u3092\u793a\u3059\u3053\u3068\u3067\u3001\u30d0\u30a4\u30c8\u64cd\u4f5c\u306e\u52b9\u679c\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002 \" width=\"1231\" height=\"349\" \/><\/a><figcaption id=\"caption-attachment-117035\" class=\"wp-caption-text\">\u56f31 \u5909\u66f4\u3055\u308c\u305f\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9 \u30e9\u30f3\u30bf\u30a4\u30e0\u306e\u30b5\u30f3\u30d7\u30eb<\/figcaption><\/figure><figcaption id=\"caption-attachment-116934\" class=\"wp-caption-text\"><\/figcaption><\/figure>\n<p>\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u305d\u308c\u81ea\u4f53\u306b\u306f\u5b9f\u884c\u6a5f\u80fd\u304c\u306a\u3044\u306e\u3067\u3001\u5b9f\u884c\u306b\u306f\u30e1\u30e2\u30ea\u5185\u306b\u5b9f\u884c\u74b0\u5883\u3092\u5272\u308a\u5f53\u3066\u3066\u304f\u308c\u308bWindows\u30ed\u30fc\u30c0\u304c\u5fc5\u8981\u3067\u3059\u3002\u5206\u6790\u6642\u70b9\u3067\u306f\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u7528\u306e\u30ed\u30fc\u30c0\u304c\u7279\u5b9a\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3067\u3057\u305f\u306e\u3067\u3001\u30e9\u30f3\u30bf\u30a4\u30e0\u5b9f\u884c\u4e2d\u306b\u30b3\u30fc\u30c9\u3092\u8abf\u67fb\u3059\u308b\u305f\u3081\u306e\u30ab\u30b9\u30bf\u30e0 \u30ed\u30fc\u30c0\u3092\u4f5c\u6210\u3057\u305f\u306e\u3067\u3059\u304c\u3001\u305d\u306e\u5f8c\u3001\u540c\u30b5\u30f3\u30d7\u30eb\u304b\u3089\u7279\u5b9a\u3055\u308c\u305f\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\u306b\u3088\u308aWaterBear\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u304c\u57cb\u3081\u8fbc\u307e\u308c\u305f\u53e4\u3044\u30a4\u30f3\u30b9\u30c8\u30fc\u30e9\u304c\u3044\u304f\u3064\u304b\u898b\u3064\u304b\u308a\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u306e\u30ed\u30fc\u30c0\u306e\u8a73\u7d30\u306f\u3001\u672c\u7a3f\u5dfb\u672b\u300c\u4ed8\u9332\u300d\u30bb\u30af\u30b7\u30e7\u30f3\u306e\u300cx86 WaterBear\u30ed\u30fc\u30c0\u300d\u306b\u8a18\u8f09\u3057\u3066\u304a\u304d\u307e\u3059\u306e\u3067\u305d\u3061\u3089\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u3055\u3066\u3001\u3053\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306f\u3001\u6a19\u7684\u306eProcess Environment Block\uff08PEB\uff09\u3092\u898b\u3064\u3051\u308b\u3068\u3053\u308d\u304b\u3089\u59cb\u307e\u308a\u3001\u305d\u308c\u304c\u3044\u307e\u30c7\u30d0\u30c3\u30b0\u74b0\u5883\u4e0b\u306b\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u305f\u3060\u3057\u3053\u306e\u30b3\u30fc\u30c9\u306fPEB\u304b\u3089\u300c<span style=\"font-family: 'courier new', courier, monospace;\">BeingDebugged<\/span>\u300d\u3068\u300c<span style=\"font-family: 'courier new', courier, monospace;\">BitField<\/span>\u300d\u306e\u4e21\u65b9\u306e\u5024\u3092\u53d6\u5f97\u3059\u308b\u3088\u3046\u306b\u8a18\u8ff0\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u7d50\u679c\u7684\u306b\u30c7\u30d0\u30c3\u30ac\u306e\u30c1\u30a7\u30c3\u30af\u304c\u6a5f\u80fd\u3057\u306a\u3044\u30b3\u30fc\u30c9 \u30ed\u30b8\u30c3\u30af\u306b\u306a\u3063\u3066\u3057\u307e\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u305f\u3081\u3001\u305f\u3068\u3048\u30c7\u30d0\u30c3\u30ac\u304c\u63a5\u7d9a\u3055\u308c\u3066\u3044\u3066\u3082\u3001\u3053\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3067\u306f\u5e38\u306b\u30c7\u30d0\u30c3\u30b0\u74b0\u5883\u306e\u8a8d\u8b58\u306b\u5931\u6557\u3057\u307e\u3059\u3002\u3053\u306e\u30eb\u30fc\u30c1\u30f3\u306f\u3001<span style=\"font-family: 'courier new', courier, monospace;\">while<\/span>\u30eb\u30fc\u30d7\u5185\u306752\u56de\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306b\u3001\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306fPEB\u306e\u30ed\u30fc\u30c0 \u30e2\u30b8\u30e5\u30fc\u30eb \u30ea\u30b9\u30c8\u3092\u30a4\u30c6\u30ec\u30fc\u30c8\u3057\u3001<span style=\"font-family: 'courier new', courier, monospace;\">Kernel32.dll<\/span>\u306e\u30d9\u30fc\u30b9 \u30a2\u30c9\u30ec\u30b9\u3092\u63a2\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306b\u306f\u3088\u304f\u3042\u308b\u52d5\u4f5c\u3067\u3059\u3002\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306e\u5b9f\u884c\u306b\u5fc5\u8981\u3068\u306a\u308b\u4f9d\u5b58\u95a2\u4fc2\u30d5\u30a1\u30a4\u30eb\u3092\u89e3\u6c7a\u3059\u308b\u306b\u306f\u3001<span style=\"font-family: 'courier new', courier, monospace;\">Kernel32.dll<\/span>\u306e\u30d9\u30fc\u30b9 \u30a2\u30c9\u30ec\u30b9\u304c\u5fc5\u8981\u3060\u304b\u3089\u3067\u3059\u3002\u3053\u306e\u30d9\u30fc\u30b9 \u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u7528\u3057\u3066\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306f\u4f9d\u5b58\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u30ed\u30fc\u30c9\u3057\u3001\u6a19\u6e96\u7684\u306a\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306eAPI\u540d\u30cf\u30c3\u30b7\u30e5\u5316\u3092\u4f7f\u7528\u3057\u3066\u3001\u5fc5\u8981\u306aWindows\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3 \u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 \u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\uff08Windows API\uff09\u547c\u3073\u51fa\u3057\u3092\u89e3\u6c7a\u3057\u307e\u3059\u3002\u6b21\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u304c\u30ed\u30fc\u30c9\u3055\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">Advapi32.dll<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">Kernel32.dll<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">Msvcrt.dll<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">User32.dll<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">Ws2_32.dll<\/span><\/li>\n<\/ul>\n<p>\u521d\u671f\u5316\u51e6\u7406\u3092\u7d42\u4e86\u3059\u308b\u3068\u3001\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306f\u81ea\u8eab\u306emain\u95a2\u6570\u306b\u79fb\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u4ee5\u4e0b\u306e\u30ad\u30fc\u3067\u6a19\u7684\u306e\u30ec\u30b8\u30b9\u30c8\u30ea\u306b\u30af\u30a8\u30ea\u3092\u767a\u884c\u3059\u308b\u3053\u3068\u304b\u3089\u59cb\u307e\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">HKEY_CURRENT_USER\\Console\\QuickEdit<\/span><\/li>\n<\/ul>\n<p>Windows \u30b3\u30de\u30f3\u30c9 \u30d7\u30ed\u30f3\u30d7\u30c8\u306f\u3001\u3053\u306e\u30ec\u30b8\u30b9\u30c8\u30ea\u30ad\u30fc\u3067\u30af\u30a4\u30c3\u30af\u7de8\u96c6\u30e2\u30fc\u30c9\u3092\u6709\u52b9\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u30af\u30a4\u30c3\u30af\u7de8\u96c6\u30e2\u30fc\u30c9\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u30b3\u30de\u30f3\u30c9 \u30d7\u30ed\u30f3\u30d7\u30c8\u304b\u3089\u30af\u30ea\u30c3\u30d7\u30dc\u30fc\u30c9\u306b\u30b3\u30d4\u30fc&amp;\u30da\u30fc\u30b9\u30c8\u3092\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u3001\u3053\u306e\u30ad\u30fc\u306b\u306fREG_DWORD\u304c1\u3064\u542b\u307e\u308c\u3066\u3044\u3066\u3001\u6709\u52b9\u306e\u5834\u5408\u306f1\u3001\u7121\u52b9\u306e\u5834\u5408\u306f0\u306e32\u30d3\u30c3\u30c8\u6570\u5024\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002BendyBear\u306f\u3053\u306e\u5024\u3092\u8aad\u307f\u53d6\u3063\u3066\u3001\u5024\u306b1000\u3092\u639b\u3051\u3001\u5f97\u3089\u308c\u305f\u7d50\u679c\u306b\u5bfe\u3057\u3066\u6b21\u306e\u8a08\u7b97\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<p>\u300c\u7d50\u679c\u304c1,000\u672a\u6e80\u304b3,300,000\u3092\u8d85\u3048\u308b\u5834\u5408\u3001\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\uff08QuickEdit\uff09\u30924,000\uff080xFA0\uff09\u3068\u3057\u3001\u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u306f\u8a08\u7b97\u7d50\u679c\u3069\u304a\u308a\u306e\u5024\u3068\u3059\u308b\u300d<\/p>\n<p>\u56f32\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u914d\u7f6e\u69cb\u9020\u3067\u6c34\u8272\u3067\u5f37\u8abf\u8868\u793a\u3057\u305f\u5024\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u3053\u306e\u30c1\u30a7\u30c3\u30af\u306f\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u5b9f\u884c\u306e\u305f\u3073\u306b\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u30ad\u30fc\u3092\u5229\u7528\u3059\u308b\u610f\u56f3\u3067\u3059\u304c\u3001\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u30ed\u30fc\u30c0\u306b\u3088\u308a\uff080\u307e\u305f\u306f1\u4ee5\u5916\u306e\uff09\u5024\u3092\u66f8\u304d\u8fbc\u3093\u3067\u3001\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u304c\u305d\u308c\u3092\u8a2d\u5b9a\u53d6\u5f97\u306b\u5229\u7528\u3057\u3066\u3044\u308b\u3082\u306e\u3068\u3057\u3066\u8aac\u660e\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u5f8c\u3001\u5185\u90e8\u306e\u914d\u7f6e\u69cb\u9020\uff081,152\u30d0\u30a4\u30c8\uff09\u304c\u5fa9\u53f7\u3055\u308c\u307e\u3059\u3002\u56f32\u306b\u305d\u306e\u30b5\u30f3\u30d7\u30eb\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_116936\" class=\"wp-caption aligncenter\" style=\"width: 866px;\" aria-describedby=\"caption-attachment-116936\">\n<p><figure id=\"attachment_116937\" aria-describedby=\"caption-attachment-116937\" style=\"width: 866px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-116937 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-16.png\" alt=\"\u3053\u3053\u3067\u4f8b\u793a\u3059\u308b\u3088\u3046\u306bBendyBear\u306f\u5185\u90e8\u306e\u914d\u7f6e\u69cb\u9020\uff081,152\u30d0\u30a4\u30c8\uff09\u3092\u5fa9\u53f7\u3057\u307e\u3059\u3002\u3055\u307e\u3056\u307e\u306a\u8272\u306e\u30cf\u30a4\u30e9\u30a4\u30c8\u306f\u3001\u914d\u7f6e\u69cb\u9020\u306e\u5206\u89e3\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u86cd\u5149\u30b0\u30ea\u30fc\u30f3\u306f\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u5168\u4f53\u306e\u5024\u306eXOR\u306b\u4f7f\u7528\u3055\u308c\u308b\u30ad\u30fc\u3001\u6c34\u8272\u306f\u30db\u30b9\u30c8\u306e\u30af\u30a4\u30c3\u30af\u7de8\u96c6\u30ec\u30b8\u30b9\u30c8\u30ea\u30ad\u30fc\u304b\u3089\u8a08\u7b97\u3055\u308c\u305f\u30d0\u30a4\u30c8\u3001\u30aa\u30ec\u30f3\u30b8\u306f\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u8868\u30594\u30d0\u30a4\u30c8\u3001\u30d4\u30f3\u30af\u306fC2\u30c9\u30e1\u30a4\u30f3\u3092\u8868\u305917\u30d0\u30a4\u30c8\u3001\u30de\u30bc\u30f3\u30bf\u306f\u6a19\u7684\u3068\u306a\u308bC2\u30dd\u30fc\u30c8\u3092\u8868\u30592\u30d0\u30a4\u30c8\u3001\u660e\u308b\u3044\u9ec4\u8272\u306f\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3067\u4f7f\u7528\u3055\u308c\u308b\u89e3\u6c7a\u6e08\u307f\u306e\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u3001\u6fc3\u3044\u30b7\u30a2\u30f3\u306f\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u30b5\u30a4\u30ba\u3092\u8868\u3059112\u30d0\u30a4\u30c8\u3067\u3053\u308c\u3092\u30d5\u30a1\u30f3\u30af\u30b7\u30e7\u30f3\u30d6\u30ed\u30c3\u30af\u306e\u6697\u53f7\u5316\u307e\u305f\u306f\u5fa9\u53f7\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002\u6fc3\u3044\u8d64\u306f\u3001\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3067\u4f7f\u7528\u3055\u308c\u308b\u89e3\u6c7a\u6e08\u307f\u306eWindows API\u95a2\u6570\u3092\u8868\u3059289\u30d0\u30a4\u30c8\u3067\u3059\u3002 \" width=\"866\" height=\"1600\" \/><figcaption id=\"caption-attachment-116937\" class=\"wp-caption-text\">\u56f32 \u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306e\u914d\u7f6e\u69cb\u9020<\/figcaption><\/figure><figcaption id=\"caption-attachment-116936\" class=\"wp-caption-text\"><\/figcaption><\/figure>\n<p>\u56f32\u306b\u793a\u3057\u305f\u914d\u7f6e\u69cb\u9020\u306e\u5185\u8a33\u306f\u3001\u4e0a\u304b\u3089\u4e0b\u306e\u9806\u306b\u4ee5\u4e0b\u306e\u5185\u5bb9\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u86cd\u5149\u30b0\u30ea\u30fc\u30f3\u3067\u8868\u793a\u3057\u305f\u306e\u304c\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u5168\u4f53\u3067\u5024\u306eXOR\u306b\u4f7f\u7528\u3055\u308c\u308b2\u3064\u306e16\u30d0\u30a4\u30c8\u306e\u30ad\u30fc\u3067\u3059\u3002<br \/>\n<span style=\"font-family: 'courier new', courier, monospace;\">7D 38 BA FD E1 C8 D2 DF B6 EE 33 F9 14 BF 52 96 <\/span><br \/>\n<span style=\"font-family: 'courier new', courier, monospace;\">71 17 DF E4 AE 3B A9 F2 D5 3D 75 CC D3 0D 57 72<\/span><\/li>\n<li>\u6c34\u8272\u3067\u8868\u793a\u3057\u305f\u306e\u304c\u30db\u30b9\u30c8\u306e\u30af\u30a4\u30c3\u30af\u7de8\u96c6\u30ec\u30b8\u30b9\u30c8\u30ea\u30ad\u30fc\u304b\u3089\u8a08\u7b97\u3055\u308c\u305f2\u30d0\u30a4\u30c8\u3067\u3059\u3002<br \/>\n<span style=\"font-family: 'courier new', courier, monospace;\">E8 03<\/span><\/li>\n<li>\u30aa\u30ec\u30f3\u30b8\u8272\u3067\u8868\u793a\u3057\u305f\u306e\u304c\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u8868\u30594\u30d0\u30a4\u30c8\u3067\u3059\u3002<br \/>\n<span style=\"font-family: 'courier new', courier, monospace;\">30 2E 32 34 (0.24)<\/span><\/li>\n<li>\u30d4\u30f3\u30af\u3067\u8868\u793a\u3057\u305f\u306e\u304cC2\u30c9\u30e1\u30a4\u30f3\u3092\u8868\u305917\u30d0\u30a4\u30c8\u3067\u3059\u3002NULL\u3092\u542b\u3080\u5024\u306e\u30c7\u30b3\u30fc\u30c9\u306e\u305f\u3081\u30d3\u30c3\u30c8\u5358\u4f4dNOT\uff08\u7b26\u53f7\u306a\u3057\u30d0\u30a4\u30c8\uff09\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<br \/>\n<span style=\"font-family: 'courier new', courier, monospace;\">88 98 CE D1 96 91 94 9A 8C 93 96 89 9A D1 9C 90 92<\/span><\/li>\n<li>\u6fc3\u3044\u7dd1\u8272\u3067\u8868\u793a\u3057\u305f\u306e\u304c\u30d1\u30bf\u30fc\u30f3\u9664\u53bb\u306b\u4f7f\u7528\u3055\u308c\u308b103\u30d0\u30a4\u30c8\u3067\u3059\u30020xFF\u3068\u306eXOR\u3092\u884c\u3063\u3066NULL\u5024\u306b\u3057\u307e\u3059\u3002<br \/>\n<span style=\"font-family: 'courier new', courier, monospace;\">FF FF FF FF FF FF FF FF FF FF FF\u2026<\/span><\/li>\n<li>\u30de\u30bc\u30f3\u30bf\u3067\u8868\u793a\u3057\u305f\u306e\u304c\u6a19\u7684\u3068\u306a\u308bC2\u30dd\u30fc\u30c8\u3092\u8868\u30592\u30d0\u30a4\u30c8\u3067\u3059\u3002<br \/>\n<span style=\"font-family: 'courier new', courier, monospace;\">BB 01<\/span><\/li>\n<li>\u660e\u308b\u3044\u9ec4\u8272\u3067\u8868\u793a\u3057\u305f\u306e\u304c\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3067\u4f7f\u7528\u3055\u308c\u308b\u89e3\u6c7a\u3055\u308c\u305f\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u3067\u3059\u3002<br \/>\n<span style=\"font-family: 'courier new', courier, monospace;\">92 13 73 33 37 02<\/span><\/li>\n<li>\u6fc3\u3044\u30b7\u30a2\u30f3\u306f\u95a2\u6570\u30dd\u30a4\u30f3\u30bf\u30b5\u30a4\u30ba\u3092\u8868\u3059112\u30d0\u30a4\u30c8\u3067\u3001\u3053\u308c\u304c\u30d5\u30a1\u30f3\u30af\u30b7\u30e7\u30f3\u30d6\u30ed\u30c3\u30af\u306e\u6697\u53f7\u5316\u307e\u305f\u306f\u5fa9\u53f7\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<br \/>\n<span style=\"font-family: 'courier new', courier, monospace;\">EE 01<\/span><\/li>\n<li>\u6fc3\u3044\u8d64\u3067\u8868\u793a\u3057\u305f\u306e\u304c\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3067\u4f7f\u7528\u3055\u308c\u308b\u89e3\u6c7a\u3055\u308c\u305fWindows API\u95a2\u6570\u3092\u8868\u3059289\u30d0\u30a4\u30c8\u3067\u3059\u3002<br \/>\n<span style=\"font-family: 'courier new', courier, monospace;\">A0 2E 52 CC FC 7F 00 00\u2026<\/span><\/li>\n<\/ul>\n<h2><a id=\"post-116929-_h3rc26s91qz9\"><\/a>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u901a\u4fe1<\/h2>\n<figure id=\"attachment_116938\" class=\"wp-caption aligncenter\" style=\"width: 900px;\" aria-describedby=\"caption-attachment-116938\">\n<p><figure id=\"attachment_117037\" aria-describedby=\"caption-attachment-117037\" style=\"width: 1261px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-17-jp.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-117037 size-full lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-17-jp.png\" alt=\"\u30b9\u30c6\u30fc\u30b8\u30e3\u306e\u901a\u4fe1\u30d5\u30ed\u30fc: \u30b9\u30c6\u30fc\u30b8\u30e3\u304c\u30ea\u30af\u30a8\u30b9\u30c8 \u30d1\u30b1\u30c3\u30c8\u3092\u751f\u6210\u3057\u3001C2\u30b5\u30fc\u30d0\u30fc\u304c\u30d7\u30ec\u30bb\u30c3\u30b7\u30e7\u30f3 \u30ad\u30fc\u3068\u30c1\u30e3\u30ec\u30f3\u30b8 \u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u8a08\u7b97\u3057\u3001C2\u30b5\u30fc\u30d0\u30fc\u304c\u6697\u53f7\u5316\u3055\u308c\u305f\u30c1\u30e3\u30f3\u30af \u30da\u30a4\u30ed\u30fc\u30c9\u3092\u8fd4\u3057\u3001\u30b9\u30c6\u30fc\u30b8\u30e3\u306f\u30c1\u30e3\u30ec\u30f3\u30b8 \u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u691c\u8a3c\u3057\u3066\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u5fa9\u53f7\u3057\u3001\u30e1\u30e2\u30ea\u5185\u3067\u5b9f\u884c\u3059\u308b \" width=\"1261\" height=\"566\" \/><\/a><figcaption id=\"caption-attachment-117037\" class=\"wp-caption-text\">\u56f33 \u30b9\u30c6\u30fc\u30b8\u30e3\u306e\u901a\u4fe1\u30d5\u30ed\u30fc<\/figcaption><\/figure><figcaption id=\"caption-attachment-116938\" class=\"wp-caption-text\"><\/figcaption><\/figure>\n<p>C2\u30b5\u30fc\u30d0\u30fc\u3068\u306e\u901a\u4fe1\u524d\u306b\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306f\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\u3092\u5b9f\u884c\u3057\u3066\u30db\u30b9\u30c8\u306eDNS\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30d5\u30e9\u30c3\u30b7\u30e5\u3057\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u30e2\u30b8\u30e5\u30fc\u30eb<span style=\"font-family: 'courier new', courier, monospace;\">dnsapi.dll<\/span>\u3092\u30ed\u30fc\u30c9\u3059\u308b<\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">DnsFlushResolverCache<\/span> API\u3092\u547c\u3073\u51fa\u3059<\/li>\n<\/ol>\n<p>\u3053\u306eAPI\u304c\u547c\u3073\u51fa\u3055\u308c\u308b\u3068\u3001\u5bfe\u8c61C2\u30b5\u30fc\u30d0\u30fc\u3060\u3051\u3067\u306a\u304f\u89e3\u6c7a\u3055\u308c\u305f\u3059\u3079\u3066\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u30db\u30b9\u30c8\u306eDNS\u30ad\u30e3\u30c3\u30b7\u30e5\u304b\u3089\u30af\u30ea\u30a2\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30db\u30b9\u30c8\u304cC2\u30c9\u30e1\u30a4\u30f3\u306b\u95a2\u9023\u4ed8\u3051\u3089\u308c\u305f\u73fe\u5728\u306eIP\u3092\u89e3\u6c7a\u3057\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u304c\u5371\u6b86\u5316\u3057\u305f\u308a\u4f7f\u7528\u3067\u304d\u306a\u304f\u306a\u3063\u305f\u308a\u3057\u3066\u3082\u901a\u4fe1\u3092\u7dad\u6301\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u307e\u305f\u958b\u767a\u8005\u304c\u5f53\u8a72\u30c9\u30e1\u30a4\u30f3\u3092\u6240\u6709\u3057\u3066\u304a\u308aIP\u3092\u66f4\u65b0\u3067\u304d\u308b\u3068\u3044\u3046\u3053\u3068\u3082\u610f\u5473\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30b9\u30c6\u30fc\u30b8\u30e3\u306f\u3001C2\u30b5\u30fc\u30d0\u30fc\u306b\u9001\u4fe1\u3059\u308b10\u30d0\u30a4\u30c8\u306e\u30c7\u30fc\u30bf\u3092\u8a08\u7b97\u3059\u308b\u3053\u3068\u304b\u3089\u59cb\u3081\u307e\u3059\u3002\u3053\u308c\u3089\u306e10\u30d0\u30a4\u30c8\u304c\u30c1\u30e3\u30ec\u30f3\u30b8 \u30ea\u30af\u30a8\u30b9\u30c8 \u30d1\u30b1\u30c3\u30c8\u3068\u306a\u308a\u307e\u3059\u3002\u30b9\u30c6\u30fc\u30b8\u30e3\u306f\u30c1\u30e3\u30ec\u30f3\u30b8 \u30ea\u30af\u30a8\u30b9\u30c8\u3092C2\u306b\u9001\u4fe1\u3057\u30c1\u30e3\u30ec\u30f3\u30b8 \u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u5f85\u3061\u307e\u3059\u3002\u30c1\u30e3\u30ec\u30f3\u30b8 \u30ec\u30b9\u30dd\u30f3\u30b9\u53d7\u4fe1\u5f8c\u3001\u3053\u308c\u3092\u9069\u5207\u306b\u5fa9\u53f7\u3057\u3001\u30b9\u30c6\u30fc\u30b8\u30e3\u306f\u7279\u5b9a\u30aa\u30d5\u30bb\u30c3\u30c8\u306b\u3042\u308b\u30de\u30b8\u30c3\u30af \u30d0\u30a4\u30c8\uff08\u30b7\u30b0\u30cd\u30c1\u30e3 \u30d0\u30a4\u30c8\uff09\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002\u3053\u306e\u30c1\u30a7\u30c3\u30af\u306b\u5931\u6557\u3059\u308b\u3068\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u63a5\u7d9a\u306f\u4e2d\u6b62\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u30c1\u30a7\u30c3\u30af\u306b\u3088\u308a\u76ee\u7684\u306eC2\u30b5\u30fc\u30d0\u30fc\u3068\u306e\u901a\u4fe1\u306e\u4fe1\u983c\u6027\u3092\u78ba\u8a8d\u3057\u3066\u304b\u3089\u30da\u30a4\u30ed\u30fc\u30c9\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3092\u958b\u59cb\u3057\u307e\u3059\u3002<\/p>\n<h4><a id=\"post-116929-_qfgf2i8zo8dv\"><\/a>I. <strong>\u30b9\u30c6\u30fc\u30b8\u30e3\u304c\u30c1\u30e3\u30ec\u30f3\u30b8 \u30ea\u30af\u30a8\u30b9\u30c8 \u30d1\u30b1\u30c3\u30c8\u3092\u751f\u6210<\/strong><\/h4>\n<p>\u30b9\u30c6\u30fc\u30b8\u30e3\u306f\u3001C2\u3078\u306e\u60c5\u5831\u3092\u542b\u308010\u30d0\u30a4\u30c8\u306e\u30c1\u30e3\u30ec\u30f3\u30b8 \u30ea\u30af\u30a8\u30b9\u30c8\u3092\u8a08\u7b97\u3057\u3001\u6b21\u306b\u53d7\u4fe1\u3059\u3079\u304d\u30c7\u30fc\u30bf\uff08\u30bb\u30c3\u30b7\u30e7\u30f3 \u30ad\u30fc\uff09\u306e\u30b5\u30a4\u30ba\u3092\u542b\u3081\u307e\u3059\u3002\u30c1\u30e3\u30ec\u30f3\u30b8 \u30ea\u30af\u30a8\u30b9\u30c8\u3068\u30bb\u30c3\u30b7\u30e7\u30f3 \u30ad\u30fc\u306f\u540c\u6642\u306bC2\u306b\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002\u30ea\u30af\u30a8\u30b9\u30c8\u306f\u305f\u3068\u3048\u3070\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059:<\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: 'courier new', courier, monospace;\">26BCFCCE738A211F3763<\/span><\/p>\n<h4><a id=\"post-116929-_ux471ma3zoz5\"><\/a>II. <strong>C2\u30b5\u30fc\u30d0\u30fc\u304c\u30c1\u30e3\u30ec\u30f3\u30b8 \u30ea\u30af\u30a8\u30b9\u30c8 \u30d1\u30b1\u30c3\u30c8\u3092\u5fa9\u53f7<\/strong><\/h4>\n<p>C2\u306f\u3001\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\u3067\u30c1\u30e3\u30ec\u30f3\u30b8 \u30ea\u30af\u30a8\u30b9\u30c8 \u30d1\u30b1\u30c3\u30c8\u3092\u5fa9\u53f7\u3057\u307e\u3059\u3002<\/p>\n<p>1. \u6700\u521d\u306e\u30d0\u30a4\u30c8\u30922\u756a\u76ee\u306e\u30d0\u30a4\u30c8\u3068XOR\u30012\u756a\u76ee\u306e\u30d0\u30a4\u30c8\u30923\u756a\u76ee\u306e\u30d0\u30a4\u30c8\u3068XOR\u2026\u3068\u3044\u3046\u3050\u3042\u3044\u3067\u3053\u308c\u3092\u30d0\u30a4\u30c810\u307e\u3067\u7d9a\u3051\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u4ee5\u4e0b\u3092\u884c\u3044\u307e\u3059:<\/p>\n<p style=\"padding-left: 40px;\">A. \u30d0\u30a4\u30c87\u3092 (\u30d0\u30a4\u30c87\u3068\u30d0\u30a4\u30c83\u306eXOR) \u306e\u7d50\u679c\u304b\u3089\u66f4\u65b0<br \/>\nB. \u30d0\u30a4\u30c82\u3092 (\u30d0\u30a4\u30c82\u3068\u30d0\u30a4\u30c80\u306eXOR) \u306e\u7d50\u679c\u304b\u3089\u66f4\u65b0<br \/>\nC. \u30d0\u30a4\u30c88\u3092 (\u30d0\u30a4\u30c88\u3068\u30d0\u30a4\u30c80\u306eXOR) \u306e\u7d50\u679c\u304b\u3089\u66f4\u65b0<br \/>\nD. \u30d0\u30a4\u30c89\u3092 (\u30d0\u30a4\u30c89\u3068\u30d0\u30a4\u30c85\u306eXOR) \u306e\u7d50\u679c\u304b\u3089\u66f4\u65b0<\/p>\n<p>2. \u6700\u7d42\u7684\u306a\u5024\u304c\u30ad\u30fc<span style=\"font-family: 'courier new', courier, monospace;\">0x3FDA5F9AD85D50C77E6A<\/span>\u3068XOR\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u30c1\u30e3\u30ec\u30f3\u30b8 \u30ea\u30af\u30a8\u30b9\u30c8\u306f\u6b21\u306e\u3088\u3046\u306b\u3057\u3066\u5fa9\u53f7\u3055\u308c\u307e\u3059 (16\u9032\u30d0\u30a4\u30c8\u8868\u8a18)\u3002<\/p>\n<figure id=\"attachment_116940\" class=\"wp-caption aligncenter\" style=\"width: 900px;\" aria-describedby=\"caption-attachment-116940\">\n<p><figure id=\"attachment_117039\" aria-describedby=\"caption-attachment-117039\" style=\"width: 1285px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-18-jp.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-117039 size-full lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-18-jp.png\" alt=\"C2\u306f\u30c1\u30e3\u30ec\u30f3\u30b8\u30ea\u30af\u30a8\u30b9\u30c8\u30d1\u30b1\u30c3\u30c8\u3092\u5fa9\u53f7\u3057\u3001\u6b21\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u751f\u6210\u3059\u308b: GetTickCount\u3001Fixed Signature\u3001GetTickCount\u3001Fixed Value\u3001GetTickCount\u3001Data Size littleEndian\u3002 \" width=\"1285\" height=\"215\" \/><\/a><figcaption id=\"caption-attachment-117039\" class=\"wp-caption-text\">\u56f34 \u5fa9\u53f7\u3055\u308c\u305f\u30ea\u30af\u30a8\u30b9\u30c8 \u30c1\u30e3\u30ec\u30f3\u30b8<\/figcaption><\/figure><figcaption id=\"caption-attachment-116940\" class=\"wp-caption-text\"><\/figcaption><\/figure>\n<p>\u5fa9\u53f7\u3055\u308c\u305f\u30ea\u30af\u30a8\u30b9\u30c8 \u30d1\u30b1\u30c3\u30c8\u306e\u6700\u5f8c\u306e4\u30d0\u30a4\u30c8\u306f\u3001C2\u30b5\u30fc\u30d0\u30fc\u306b\u5bfe\u3057\u3001\u3053\u306e\u5f8c\u306b\u671f\u5f85\u3057\u3066\u3044\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u30b5\u30a4\u30ba\u3092\u901a\u77e5\u3057\u307e\u3059\u3002\u4e0a\u306b\u793a\u3057\u305f\u3088\u3046\u306b\u3001\u3053\u306e\u5024\u306f<span style=\"font-family: 'courier new', courier, monospace;\">0x20<\/span>\u3001\u3064\u307e\u308a32\u30d0\u30a4\u30c8\u3067\u3059\u3002\u3053\u306e32\u30d0\u30a4\u30c8\u306fC2\u30b5\u30fc\u30d0\u30fc\u306e\u4f7f\u3046\u30bb\u30c3\u30b7\u30e7\u30f3\u30ad\u30fc\u3092\u8868\u3057\u3001\u3053\u308c\u304cC2\u30b5\u30fc\u30d0\u30fc\u306e\u30c1\u30e3\u30ec\u30f3\u30b8 \u30ec\u30b9\u30dd\u30f3\u30b9\u3068\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u6697\u53f7\u5316\u3057\u307e\u3059\u3002<\/p>\n<p>C2\u30b5\u30fc\u30d0\u30fc\u304c\u53d7\u4fe1\u3057\u305f\u30bb\u30c3\u30b7\u30e7\u30f3\u30ad\u30fc\u306e\u4f8b:<\/p>\n<p style=\"padding-left: 40px;\">\u30bb\u30c3\u30b7\u30e7\u30f3 \u30ad\u30fc 1\u2013&gt; <span style=\"font-family: 'courier new', courier, monospace;\">8C931D4F764B0661C26D77239EB454CA<\/span><\/p>\n<p style=\"padding-left: 40px;\">\u30bb\u30c3\u30b7\u30e7\u30f3 \u30ad\u30fc 2\u2013&gt; <span style=\"font-family: 'courier new', courier, monospace;\">7A4DD0AA6C3F37CDBDAFA4CBD6B27697<\/span><\/p>\n<p>\u30ea\u30af\u30a8\u30b9\u30c8 \u30d1\u30b1\u30c3\u30c8\u3068\u30bb\u30c3\u30b7\u30e7\u30f3 \u30ad\u30fc\u306f\u3001\u305d\u308c\u305e\u308c\u306e\u30d3\u30fc\u30b3\u30f3\u3054\u3068\u306b\u8a08\u7b97\u3055\u308c\u308b\u306e\u3067\u5e38\u306b\u4e00\u610f\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h4><a id=\"post-116929-_e2i6n8rpcdla\"><\/a><strong>III. C2\u304c\u30b9\u30c6\u30fc\u30b8\u30e3\u3092\u8a8d\u8a3c<\/strong><\/h4>\n<p>C2\u306f\u3001\u30bb\u30c3\u30b7\u30e7\u30f3\u30ad\u30fc\u3092\u4f7f\u7528\u3057\u3066RC4\u306e\u30b9\u30c6\u30fc\u30c8\u30dc\u30c3\u30af\u30b9\uff08sbox\u3001S\u30dc\u30c3\u30af\u30b9\uff09\u3092\u4f5c\u308a\u3001\u3053\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u30ad\u30fc\u3092\u6697\u53f7\u5316\u3068\u5fa9\u53f7\u306eXOR\u30ad\u30fc\u3068\u3057\u3066\u3082\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<p><em>*\u6ce8: \u30bb\u30c3\u30b7\u30e7\u30f3\u30ad\u30fc2\u306e\u7528\u9014\u306f\u307e\u3060\u3088\u304f\u308f\u304b\u3063\u3066\u3044\u307e\u305b\u3093\u3002\u30b9\u30c6\u30fc\u30b8\u30e3\u3068\u306e\u901a\u4fe1\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u306b\u306f\u898b\u3048\u307e\u305b\u3093\u3002<\/em><\/p>\n<p>1. \u30d7\u30ec\u30bb\u30c3\u30b7\u30e7\u30f3 \u30ad\u30fc\u306f\u3001\u30bb\u30c3\u30b7\u30e7\u30f3 \u30ad\u30fc1 (\u6700\u521d\u306e16\u30d0\u30a4\u30c8) \u3092\u4f7f\u7528\u3057\u3066\u6b21\u306e\u3088\u3046\u306b\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002<\/p>\n<p style=\"padding-left: 40px;\">\u30d7\u30ec\u30bb\u30c3\u30b7\u30e7\u30f3 \u30ad\u30fc = \u30bb\u30c3\u30b7\u30e7\u30f3 \u30ad\u30fc<span style=\"font-family: 'courier new', courier, monospace;\"> 1 XOR <\/span><span style=\"font-family: 'courier new', courier, monospace;\">0X6162636465666768696A6B6C6D6E6F00<\/span><\/p>\n<p>2. \u30b9\u30c6\u30c3\u30d71\u3067\u8a08\u7b97\u3057\u305f\u30d7\u30ec\u30bb\u30c3\u30b7\u30e7\u30f3 \u30ad\u30fc\u3092\u4f7f\u3063\u3066\u3001C2\u30b5\u30fc\u30d0\u30fc\u304cRC4\u306e\u9375\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0 \u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\uff08KSA\uff09\u3092\u69cb\u6210\u3057\u307e\u3059\u3002\u3053\u306e\u8a08\u7b97\u306f\u6b21\u306e\u3088\u3046\u306b\u884c\u308f\u308c\u307e\u3059\u3002<\/p>\n<p style=\"padding-left: 40px;\">a. \u4ee5\u4e0b\u306b\u793a\u3059\u95a2\u6570\u306b\u3001\u4ee5\u4e0b\u306e\u5165\u529b\u3092\u4e0e\u3048\u3066RC4\u306eKSA\u3092\u69cb\u6210\u3057\u307e\u3059\u3002<\/p>\n<p>data = 16\u30d0\u30a4\u30c8\u306e\u30ad\u30fc <span style=\"font-family: 'courier new', courier, monospace;\">0x0C2F65194FF37B2D63D34635C7B205E4<\/span><br \/>\nkey = \u30b9\u30c6\u30c3\u30d71\u3067\u8a08\u7b97\u3057\u305f16\u30d0\u30a4\u30c8\u306e\u30d7\u30ec\u30bb\u30c3\u30b7\u30e7\u30f3 \u30ad\u30fc<\/p>\n<p style=\"padding-left: 40px;\">\u00a0 \u00a0RC4\uff08\u5909\u66f4\u6e08\u307f\uff09KSA\u30eb\u30fc\u30c1\u30f3\u306e\u4f8b:<\/p>\n<pre class=\"lang:python decode:true \">def rc4_KSA(data, key):\r\n\u00a0 \u00a0 \u00a0 x = 0\r\n\u00a0 \u00a0 \u00a0 box = range(258)\r\n\u00a0 \u00a0 \u00a0 box[256] = 0\r\n\u00a0 \u00a0 \u00a0 box[257] = 0\r\n\u00a0 \u00a0 \u00a0 for i in range(256):\r\n\u00a0 \u00a0 \u00a0 x = (x + box[i] + ord(key[i % len(key)])) % 256\r\n\u00a0 \u00a0 \u00a0 box[i], box[x] = box[x],box[i]\r\n\u00a0 \u00a0 \u00a0 return box<\/pre>\n<p><em>* KSA\u30eb\u30fc\u30c1\u30f3\u306e\u5165\u529b\u30d1\u30e9\u30e1\u30fc\u30bf\u300cdata\u300d\u306f\u3001\u86cd\u5149\u30b0\u30ea\u30fc\u30f3\u3067\u793a\u3057\u305f2\u3064\u306e16\u30d0\u30a4\u30c8\u30ad\u30fc(\u203b)\u306eXOR\u7d50\u679c\u3067\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3002\u203b \u56f32\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u914d\u7f6e\u69cb\u9020\u53c2\u7167\u3002<\/em><\/p>\n<p>3. \u56f35\u306b\u793a\u305916\u9032\u5024\u3092\u4f7f\u7528\u3057\u300110\u30d0\u30a4\u30c8\u306e\u30b5\u30fc\u30d0\u30fc \u30c1\u30e3\u30ec\u30f3\u30b8 \u30ec\u30b9\u30dd\u30f3\u30b9 \u30d8\u30c3\u30c0\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_116942\" class=\"wp-caption aligncenter\" style=\"width: 900px;\" aria-describedby=\"caption-attachment-116942\">\n<p><figure id=\"attachment_117042\" aria-describedby=\"caption-attachment-117042\" style=\"width: 1488px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-19-jp.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-117042 size-full lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-19-jp.png\" alt=\"\u30b5\u30fc\u30d0\u30fc \u30b3\u30de\u30f3\u30c9 \u30c1\u30e3\u30ec\u30f3\u30b8 \u30d8\u30c3\u30c0\u306f\u3001\u30e9\u30f3\u30c0\u30e0\u5024\uff08\u8d64\u3067\u8868\u793a\uff09\u3001\u56fa\u5b9a\u306e\u7f72\u540d\uff08\u7dd1\uff09\u3001\u30e9\u30f3\u30c0\u30e0\u5024\uff08\u6c34\u8272\uff09\u3001\u30b3\u30de\u30f3\u30c9\uff08\u9752\uff09\u3001\u30e9\u30f3\u30c0\u30e0\u5024\uff08\u7070\u8272\uff09\u3001\u304a\u3088\u3073\u30d8\u30c3\u30c0 \u30b5\u30a4\u30ba\u306e\u30ea\u30c8\u30eb \u30a8\u30f3\u30c7\u30a3\u30a2\u30f3\uff08\u30aa\u30ec\u30f3\u30b8\uff09\u3067\u69cb\u6210\u3055\u308c\u307e\u3059\u3002 \" width=\"1488\" height=\"430\" \/><\/a><figcaption id=\"caption-attachment-117042\" class=\"wp-caption-text\">\u56f35 \u30b5\u30fc\u30d0\u30fc \u30b3\u30de\u30f3\u30c9 \u30c1\u30e3\u30ec\u30f3\u30b8 \u30d8\u30c3\u30c0<\/figcaption><\/figure><figcaption id=\"caption-attachment-116942\" class=\"wp-caption-text\"><\/figcaption><\/figure>\n<p>4. \u30b9\u30c6\u30c3\u30d73\u306e\u30b5\u30fc\u30d0\u30fc \u30c1\u30e3\u30ec\u30f3\u30b8 \u30ec\u30b9\u30dd\u30f3\u30b9 \u30d8\u30c3\u30c0\u3092\u6697\u53f7\u5316\u3057\u307e\u3059\u3002<\/p>\n<p style=\"padding-left: 40px;\">a. 10\u30d0\u30a4\u30c8\u306e\u30b5\u30fc\u30d0\u30fc \u30c1\u30e3\u30ec\u30f3\u30b8\u3092\u30ad\u30fc<span style=\"font-family: 'courier new', courier, monospace;\">0x33836E6B3FAA6AC464DA<\/span>\u3068XOR\u3057\u3066\u4ee5\u4e0b\u3092\u5b9f\u884c\u3057\u307e\u3059:<\/p>\n<p style=\"padding-left: 80px;\">i. \u30d0\u30a4\u30c87\u3092 (\u30d0\u30a4\u30c87\u3068\u30d0\u30a4\u30c83\u306eXOR) \u306e\u7d50\u679c\u304b\u3089\u66f4\u65b0<br \/>\nii. \u30d0\u30a4\u30c82\u3092 (\u30d0\u30a4\u30c82\u3068\u30d0\u30a4\u30c80\u306eXOR) \u306e\u7d50\u679c\u304b\u3089\u66f4\u65b0<br \/>\niii. \u30d0\u30a4\u30c88\u3092 (\u30d0\u30a4\u30c88\u3068\u30d0\u30a4\u30c80\u306eXOR) \u306e\u7d50\u679c\u304b\u3089\u66f4\u65b0<br \/>\niv. \u30d0\u30a4\u30c89\u3092 (\u30d0\u30a4\u30c89\u3068\u30d0\u30a4\u30c85\u306eXOR) \u306e\u7d50\u679c\u304b\u3089\u66f4\u65b0<\/p>\n<p style=\"padding-left: 40px;\">b. \u6697\u53f7\u5316\u3055\u308c\u305f\u30b5\u30fc\u30d0\u30fc \u30c1\u30e3\u30ec\u30f3\u30b8 \u30ec\u30b9\u30dd\u30f3\u30b9 \u30d8\u30c3\u30c0 = \u30b9\u30c6\u30c3\u30d7 4(a) \u306e\u7d50\u679c<\/p>\n<p>5. \u6700\u7d42\u7684\u306a\u8a8d\u8a3c\u30ad\u30fc\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002<\/p>\n<p style=\"padding-left: 40px;\">a. \u4ee5\u4e0b\u306e\u5024\u3092XOR:<\/p>\n<p style=\"padding-left: 80px;\">i. <span style=\"font-family: 'courier new', courier, monospace;\">0x0C2F65194FF37B2D63D34635C7B205E4<\/span><br \/>\nii. \u30b9\u30c6\u30c3\u30d71\u3001\u3064\u307e\u308a\u30d7\u30ec\u30bb\u30c3\u30b7\u30e7\u30f3 \u30ad\u30fc\u304b\u3089\u8a08\u7b97\u3055\u308c\u305f\u5024<\/p>\n<p><em>*\u6ce8: \u30b9\u30c6\u30c3\u30d7 5(a)(i)\u306e16\u30d0\u30a4\u30c8\u5024\u306f\u3001\u30b9\u30c6\u30c3\u30d72\u306eKSA\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u4f7f\u7528\u3055\u308c\u305f\u3082\u306e\u3068\u540c\u3058\u5165\u529b\u30d1\u30e9\u30e1\u30fc\u30bf\u3067\u3059\u3002\u30b9\u30c6\u30fc\u30b8\u30e3\u306fC2\u304b\u3089\u3053\u306e\u30ad\u30fc\u3092\u671f\u5f85\u3057\u3066\u304a\u308a\u3001\u305d\u308c\u304c\u5f97\u3089\u308c\u306a\u3051\u308c\u3070\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u4e2d\u6b62\u3057\u307e\u3059\u3002<\/em><\/p>\n<p>\u30b9\u30c6\u30c3\u30d74\u30685\u3067\u751f\u6210\u3055\u308c\u305f\u5024\u3067\u30b5\u30fc\u30d0\u30fc \u30c1\u30e3\u30ec\u30f3\u30b8 \u30ec\u30b9\u30dd\u30f3\u30b9\u306f\u5b8c\u7d50\u3057\u307e\u3059\u3002\u3053\u306e\u6642\u70b9\u3067\u3001C2\u306f\u30b5\u30fc\u30d0\u30fc \u30c1\u30e3\u30ec\u30f3\u30b8 \u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u30b9\u30c6\u30fc\u30b8\u30e3\u306b\u9001\u308a\u3001\u8a8d\u8a3c\u30d7\u30ed\u30bb\u30b9\u3092\u5b8c\u4e86\u3057\u307e\u3059\u3002<\/p>\n<h4><a id=\"post-116929-_5kl2u87wod5d\"><\/a><strong>IV. C2\u304c\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u6697\u53f7\u5316\u3057\u3066\u9001\u4fe1<\/strong><\/h4>\n<p>\u6b21\u306bC2\u306f\u30b9\u30c6\u30fc\u30b8\u30e3\u306b\u30b3\u30de\u30f3\u30c9\u3092\u9001\u4fe1\u3059\u308b\u6e96\u5099\u3092\u3057\u307e\u3059\u3002BendyBear\u306f\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3068\u3044\u30461\u7a2e\u985e\u306e\u30b3\u30de\u30f3\u30c9\u306e\u307f\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>1. \u56f36\u306b\u793a\u3057\u305f16\u9032\u5024\u3092\u4f7f\u3044\u300110\u30d0\u30a4\u30c8\u306e\u30b3\u30de\u30f3\u30c9\u30d8\u30c3\u30c0\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_116944\" class=\"wp-caption aligncenter\" style=\"width: 900px;\" aria-describedby=\"caption-attachment-116944\">\n<p><figure id=\"attachment_117044\" aria-describedby=\"caption-attachment-117044\" style=\"width: 1294px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-20-jp.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-117044 size-full lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-20-jp.png\" alt=\"\u66f4\u65b0\u3055\u308c\u305f\u30b5\u30fc\u30d0\u30fc \u30b3\u30de\u30f3\u30c9 \u30c1\u30e3\u30ec\u30f3\u30b8 \u30d8\u30c3\u30c0\u306f\u3001\u30e9\u30f3\u30c0\u30e0\u5024\uff08\u8d64\u3067\u8868\u793a\uff09\u3001\u56fa\u5b9a\u7f72\u540d\uff08\u9ec4\u3068\u7dd1\uff09\u3001\u30e9\u30f3\u30c0\u30e0\u5024\uff08\u6c34\u8272\uff09\u3001\u30b3\u30de\u30f3\u30c9\uff08\u9752\uff09\u3001\u30e9\u30f3\u30c0\u30e0\u5024\uff08\u7070\u8272\uff09\u3001\u30d8\u30c3\u30c0 \u30b5\u30a4\u30ba\u306e\u30ea\u30c8\u30eb \u30a8\u30f3\u30c7\u30a3\u30a2\u30f3\uff08\u30aa\u30ec\u30f3\u30b8\uff09\u3067\u69cb\u6210\u3055\u308c\u307e\u3059\u3002 \" width=\"1294\" height=\"408\" \/><\/a><figcaption id=\"caption-attachment-117044\" class=\"wp-caption-text\">\u56f36 \u66f4\u65b0\u3055\u308c\u305f\u30b5\u30fc\u30d0\u30fc \u30b3\u30de\u30f3\u30c9 \u30c1\u30e3\u30ec\u30f3\u30b8 \u30d8\u30c3\u30c0<\/figcaption><\/figure><figcaption id=\"caption-attachment-116944\" class=\"wp-caption-text\"><\/figcaption><\/figure>\n<p>\u30d8\u30c3\u30c0\u3078\u306e\u552f\u4e00\u306e\u5909\u66f4\u306f\u3001\u56fa\u5b9a\u306e\u30b7\u30b0\u30cd\u30c1\u30e3\u5024\u304c0x40\u304b\u30890x43\u306b\u306a\u3063\u305f\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>2. \u30b9\u30c6\u30c3\u30d71\u306e\u30b3\u30de\u30f3\u30c9 \u30d8\u30c3\u30c0\u3092\u6697\u53f7\u5316\u3057\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306f\u3001\u4f7f\u7528\u3067\u304d\u308b\u5909\u66f4\u3055\u308c\u305fRC4\u30eb\u30fc\u30c1\u30f3\u306e\u4f8b\u3067\u3059\u30021\u3064\u76ee\u306e\u5f15\u6570<span style=\"font-family: 'courier new', courier, monospace;\">box<\/span>\u306f\u30b9\u30c6\u30c3\u30d7III(2)\u3067\u8a08\u7b97\u3057\u305fS\u30dc\u30c3\u30af\u30b9\u30012\u3064\u76ee\u306e\u5f15\u6570<span style=\"font-family: 'courier new', courier, monospace;\">data<\/span>\u306f\u30b9\u30c6\u30c3\u30d71\u3067\u5f97\u305f\u30b3\u30de\u30f3\u30c9 \u30d8\u30c3\u30c0\u3067\u3059\u3002<\/p>\n<pre class=\"lang:python decode:true \">def rc4_Mod_Crypt(box, data):\r\n\u00a0 \u00a0 x = box[256]\r\n\u00a0 \u00a0 y = box[257]\r\n\u00a0 \u00a0 c = 0\r\n\u00a0 \u00a0 out = []\r\n\u00a0 \u00a0 for char in data:\r\n\u00a0 \u00a0 \u00a0 \u00a0 x = (x + 1) % 256\r\n\u00a0 \u00a0 \u00a0 \u00a0 y = (y + box[x]) % 256\r\n\u00a0 \u00a0 \u00a0 \u00a0 box[x], box[y] = box[y],box[x]\r\n\u00a0 \u00a0 \u00a0 \u00a0 z = ( (box[x] + box[y] )&amp;0xff ) % 256\r\n\u00a0 \u00a0 \u00a0 \u00a0 al = rol( box[z],4,8 )\r\n\u00a0 \u00a0 \u00a0 \u00a0 out.append( chr( ord( data[c] ) ^ al ))\r\n\u00a0 \u00a0 \u00a0 \u00a0 box[z] = al\r\n\u00a0 \u00a0 \u00a0 \u00a0 c+=1\r\n\u00a0 \u00a0 box[256] = x\r\n\u00a0 \u00a0 box[257] = y\r\n\u00a0 \u00a0 return \u201d.join(out)<\/pre>\n<p>3. \u30da\u30a4\u30ed\u30fc\u30c9 \u30b5\u30a4\u30ba\u3092\u53d6\u5f97\u3057\u3001\u30b9\u30c6\u30c3\u30d72\u3068\u540c\u3058RC4\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u305d\u306e\u5024\u3092\u6697\u53f7\u5316\u3057\u307e\u3059\u3002\u30da\u30a4\u30ed\u30fc\u30c9 \u30b5\u30a4\u30ba\u306f\u5fa9\u53f7\u3057\u305f\u30da\u30a4\u30ed\u30fc\u30c9 \u30b5\u30a4\u30ba\u306e\u5408\u8a08\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>4. \u30da\u30a4\u30ed\u30fc\u30c9\u3092\u6697\u53f7\u5316\u3057\u30c1\u30e3\u30f3\u30af\u3067\u30b9\u30c6\u30fc\u30b8\u30e3\u306b\u9001\u4fe1\u3057\u307e\u3059\u3002<\/p>\n<p style=\"padding-left: 40px;\">a. \u30da\u30a4\u30ed\u30fc\u30c9\u304b\u30894,086\u30d0\u30a4\u30c8\u5206\u8aad\u307f\u53d6\u308a\u307e\u3059\u3002\u3053\u308c\u304c\u30b9\u30c6\u30fc\u30b8\u30e3\u306e\u53d7\u3051\u5165\u308c\u308b\u6700\u5927\u30c1\u30e3\u30f3\u30af \u30b5\u30a4\u30ba\u3067\u3059\u3002<\/p>\n<p style=\"padding-left: 40px;\">b. \u30b3\u30de\u30f3\u30c9 \u30d8\u30c3\u30c0\u3092\u4f5c\u6210\u3057 (\u4e0a\u8a18\u30b9\u30c6\u30c3\u30d71)\u3001\u4ee5\u4e0b\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u66f4\u65b0\u3057\u307e\u3059:<\/p>\n<p style=\"padding-left: 80px;\">i. \u30d8\u30c3\u30c0 \u30b5\u30a4\u30ba = \u30da\u30a4\u30ed\u30fc\u30c9 \u30c1\u30e3\u30f3\u30af \u30b5\u30a4\u30ba<\/p>\n<p style=\"padding-left: 80px;\">ii. \u30b3\u30de\u30f3\u30c9 = 1<\/p>\n<p style=\"padding-left: 40px;\">c. \u66f4\u65b0\u3057\u305f10\u30d0\u30a4\u30c8\u306e\u30b3\u30de\u30f3\u30c9 \u30d8\u30c3\u30c0\u3092\u30b9\u30c6\u30fc\u30b8\u30e3\u306b\u9001\u4fe1\u3057\u307e\u3059\u3002<\/p>\n<p style=\"padding-left: 40px;\">d. \u6697\u53f7\u5316\u3055\u308c\u305f\u30da\u30a4\u30ed\u30fc\u30c9 \u30c1\u30e3\u30f3\u30af\u3092\u9001\u4fe1\u3057\u307e\u3059\u3002<\/p>\n<p style=\"padding-left: 40px;\">e. \u30da\u30a4\u30ed\u30fc\u30c9\u304c\u9001\u4fe1\u3055\u308c\u7d42\u308f\u308b\u307e\u3067\u624b\u9806a\u304b\u3089d\u3092\u7e70\u308a\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<p>\u56f37\u306f\u3001\u30b9\u30c6\u30fc\u30b8\u30e3\u306b\u9001\u4fe1\u3055\u308c\u308b\u30da\u30a4\u30ed\u30fc\u30c9 \u30c1\u30e3\u30f3\u30af\u306e\u4f8b\u30921\u3064\u793a\u3057\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_116946\" class=\"wp-caption aligncenter\" style=\"width: 900px;\" aria-describedby=\"caption-attachment-116946\">\n<p><figure id=\"attachment_117046\" aria-describedby=\"caption-attachment-117046\" style=\"width: 1121px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-21-jp.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-117046 size-full lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-21-jp.png\" alt=\"BendyBear\u306e\u8abf\u67fb\u304b\u3089\u5f97\u3089\u308c\u305f\u6697\u53f7\u5316\u3055\u308c\u305f\u30da\u30a4\u30ed\u30fc\u30c9 \u30d8\u30c3\u30c0\u3068\u30c7\u30fc\u30bf\u3002\u30ab\u30e9\u30fc\u30b3\u30fc\u30c9: \u30ec\u30b9\u30dd\u30f3\u30b9 \u30d8\u30c3\u30c0 10\u30d0\u30a4\u30c8\uff08\u7d2b\uff09\u3002\u5fa9\u53f7\u5316\u3055\u308c\u305f\u30da\u30a4\u30ed\u30fc\u30c9\u30b5\u30a4\u30ba\uff08\u8584\u7dd1\uff09\u3002\u6697\u53f7\u5316\u3055\u308c\u305f\u30da\u30a4\u30ed\u30fc\u30c9\u30c1\u30e3\u30f3\u30af\uff08\u7070\u8272\uff09\u3002\u30b3\u30de\u30f3\u30c9 \u30d8\u30c3\u30c0\uff08\u6c34\u8272\uff09\u3002 \" width=\"1121\" height=\"432\" \/><\/a><figcaption id=\"caption-attachment-117046\" class=\"wp-caption-text\">\u56f37 \u6697\u53f7\u5316\u3055\u308c\u305f\u30da\u30a4\u30ed\u30fc\u30c9 \u30d8\u30c3\u30c0\u3068\u30c7\u30fc\u30bf<\/figcaption><\/figure><figcaption id=\"caption-attachment-116946\" class=\"wp-caption-text\"><\/figcaption><\/figure>\n<p>\u5404\u30c1\u30e3\u30f3\u30af\u3092\u53d7\u4fe1\u3059\u308b\u3068\u3001\u30b9\u30c6\u30fc\u30b8\u30e3\u306f\u30b3\u30de\u30f3\u30c9 \u30d8\u30c3\u30c0\u3092\u53d6\u308a\u9664\u3044\u3066\u30e1\u30e2\u30ea\u5185\u306e\u30da\u30a4\u30ed\u30fc\u30c9 \u30c1\u30e3\u30f3\u30af\u3092\u5fa9\u53f7\u3057\u307e\u3059\u3002<\/p>\n<h2><a id=\"post-116929-_6gnckt1wuwlg\"><\/a>\u30da\u30a4\u30ed\u30fc\u30c9 \u306e\u30a4\u30f3\u30e1\u30e2\u30ea \u30ed\u30fc\u30c7\u30a3\u30f3\u30b0<\/h2>\n<p>\u30da\u30a4\u30ed\u30fc\u30c9\u304c\u3059\u3079\u3066\u5fa9\u53f7\u3055\u308c\u308b\u3068\u3001\u30b9\u30c6\u30fc\u30b8\u30e3\u306f\u3044\u304f\u3064\u304b\u57fa\u672c\u7684\u306a\u30c1\u30a7\u30c3\u30af\u3092\u5b9f\u884c\u3057\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u304cWindows\u5b9f\u884c\u53ef\u80fd\u30d5\u30a1\u30a4\u30eb\u306b\u6e96\u62e0\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u30b9\u30c6\u30fc\u30b8\u30e3\u306fDOS\u3068PE\u30d8\u30c3\u30c0\u3092\u691c\u8a3c\u3057\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u304cDLL\u3067\u3042\u308b\u3053\u3068\u3092\u691c\u8a3c\u3057\u307e\u3059\u3002\u6b21\u306b\u30c0\u30a4\u30ec\u30af\u30c8\u30e1\u30e2\u30ea\u304c\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u30ed\u30fc\u30c9\u3057\u3001\u305d\u306e\u30a8\u30f3\u30c8\u30ea\u30dd\u30a4\u30f3\u30c8 (AddressOfEntryPoint) \u3092\u547c\u3073\u51fa\u3057\u307e\u3059\u3002\u30da\u30a4\u30ed\u30fc\u30c9\u306e\u30c0\u30a4\u30ec\u30af\u30c8 \u30e1\u30e2\u30ea \u30ed\u30fc\u30c9\u306f\u3001Windows PE \u30ed\u30fc\u30c0\u3067\u3042\u308bLoadLibrary\u3092\u30a8\u30df\u30e5\u30ec\u30fc\u30c8\u3057\u307e\u3059\u3002\u305d\u306e\u7d50\u679c\u3001PEB\u306eLDR_DATA_TABLE_ENTRY\u30e1\u30bf\u30c7\u30fc\u30bf\u69cb\u9020\u4f53\u306f\u4f5c\u6210\u3055\u308c\u305a\u3001\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u3066\u3044\u308b\u30d7\u30ed\u30bb\u30b9\u306ePEB\u306b\u306f\u3001\u30db\u30b9\u30c8\u4e0a\u3067\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u4e0d\u6b63\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u691c\u51fa\u306b\u4f7f\u308f\u308c\u308bDLL\u306e\u30ed\u30fc\u30c9\u8a18\u9332\u304c\u6b8b\u308a\u307e\u305b\u3093\u3002\u3053\u308c\u306f\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u30ed\u30fc\u30c9\u3057\u305f\u30d7\u30ed\u30bb\u30b9\u5185\u3067WinDbg\u306e!address\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u56f38\u306b\u30b5\u30f3\u30d7\u30eb\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_117000\" class=\"wp-caption aligncenter\" style=\"width: 599px;\" aria-describedby=\"caption-attachment-117000\">\n<p><figure id=\"attachment_117001\" aria-describedby=\"caption-attachment-117001\" style=\"width: 599px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-117001 size-full lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/Screen-Shot-2021-02-05-at-6.41.06-PM.png\" alt=\"BendyBear\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u3066\u3044\u308b\u30d7\u30ed\u30bb\u30b9\u306ePEB\u306b\u306f\u3001\u30db\u30b9\u30c8\u4e0a\u3067\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u4e0d\u6b63\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u691c\u51fa\u306b\u4f7f\u3048\u308bDLL\u306e\u30ed\u30fc\u30c9\u8a18\u9332\u304c\u6b8b\u308a\u307e\u305b\u3093\u3002\u3053\u3053\u3067\u56f3\u793a\u3057\u305f\u3088\u3046\u306b\u3001\u3053\u308c\u306f\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u30ed\u30fc\u30c9\u3057\u305f\u30d7\u30ed\u30bb\u30b9\u5185\u3067WinDbg\u306e!address\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\" width=\"599\" height=\"99\" \/><figcaption id=\"caption-attachment-117001\" class=\"wp-caption-text\">\u56f38 \u30c0\u30a4\u30ec\u30af\u30c8 \u30a4\u30f3\u30e1\u30e2\u30ea \u30ed\u30fc\u30c7\u30a3\u30f3\u30b0\u304c\u884c\u308f\u308c\u305fDLL\u306e\u30a2\u30fc\u30c6\u30a3\u30d5\u30a1\u30af\u30c8<\/figcaption><\/figure><figcaption id=\"caption-attachment-117000\" class=\"wp-caption-text\"><\/figcaption><\/figure>\n<p>\u30a4\u30f3\u30e1\u30e2\u30ea\u306e\u30a2\u30fc\u30c6\u30a3\u30d5\u30a1\u30af\u30c8:<\/p>\n<ul>\n<li>Type\u306f<span style=\"font-family: 'courier new', courier, monospace;\">MEM_PRIVATE<\/span>\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u308c\u306f\u30ed\u30fc\u30c9\u3057\u305f\u30d7\u30ed\u30bb\u30b9\u306b\u5bfe\u3057\u3066\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u306a\u30e1\u30e2\u30ea\u30da\u30fc\u30b8\u3067\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u3066\u3044\u307e\u3059\u3002Windows\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306e\u5834\u5408\u3001\u901a\u5e38\u306fDLL\u304c<span style=\"font-family: 'courier new', courier, monospace;\">MEM_IMAGE<\/span>\u3068\u3057\u3066\u30ed\u30fc\u30c9\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u7570\u306a\u308b\u30d7\u30ed\u30bb\u30b9\u3068\u306e\u9593\u3067DLL\u3092\u5171\u6709\u3057\u3001\u30e1\u30e2\u30ea \u30b9\u30da\u30fc\u30b9\u3092\u7bc0\u7d04\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<li>Protection\u306f<span style=\"font-family: 'courier new', courier, monospace;\">PAGE_EXECUTE_READWRITE(RWX)<\/span>\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u308c\u306f\u305d\u306e\u9818\u57df\u304cMZ\u30d8\u30c3\u30c0\u3092\u542b\u3080\u30e1\u30e2\u30ea\u9818\u57df\u3067\u66f8\u304d\u8fbc\u307f\u53ef\u80fd\u30fb\u5b9f\u884c\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306eMZ\u30d8\u30c3\u30c0\u304c\u30a4\u30f3\u30e1\u30e2\u30ea \u30ed\u30fc\u30c7\u30a3\u30f3\u30b0\u3057\u305fDLL\u3067\u3059\u3002<\/li>\n<\/ul>\n<p>\u56f38\u306b\u793a\u3059\u3088\u3046\u306b\u3001WinDbg\u306e<span style=\"font-family: 'courier new', courier, monospace;\">!address<\/span> \u30b3\u30de\u30f3\u30c9\u306e\u51fa\u529b\u3067\u7570\u5e38\u306e\u3042\u308b\u30a8\u30f3\u30c8\u30ea\u304c\u898b\u3064\u304b\u308a\u307e\u3059\u3002\u30e2\u30b8\u30e5\u30fc\u30eb\u306e<span style=\"font-family: 'courier new', courier, monospace;\">0x7ff4c2450000<\/span> \u306e\u30e1\u30e2\u30ea\u30a2\u30c9\u30ec\u30b9\u306f\u3001\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u306e\u30e1\u30e2\u30ea\u5272\u308a\u5f53\u3066\u3068\u3001Protection\u304cRWX\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3068\u3001Usage\u306b<span style=\"font-family: 'courier new', courier, monospace;\">MZ<\/span>\u30d8\u30c3\u30c0\u3092\u542b\u3080\u3053\u3068\u306b\u3088\u308b\u7d50\u679c\u3067\u3059\u3002<\/p>\n<h2><a id=\"post-116929-_qny2e5wj94w7\"><\/a>x64 \u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306e\u632f\u308b\u821e\u3044<\/h2>\n<p>\u6b21\u306e\u8868\u306b\u3001BendyBear\u306e\u4e3b\u306a\u52d5\u4f5c\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<table style=\"width: 101.553%;\">\n<tbody>\n<tr>\n<td style=\"width: 70.4663%;\"><strong>\u884c\u52d5\u30a2\u30fc\u30c6\u30a3\u30d5\u30a1\u30af\u30c8<\/strong><\/td>\n<td style=\"width: 34.456%;\"><strong>ATT&amp;CK ID<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 70.4663%;\">\u30ec\u30b8\u30b9\u30c8\u30ea\u306e\u30af\u30a8\u30ea<\/p>\n<p>HKEY_CURRENT_USER\\Console\\QuickEdit<\/td>\n<td style=\"width: 34.456%;\"><a href=\"https:\/\/attack.mitre.org\/techniques\/T1012\/\">T1012: Query Registry \uff08\u30ec\u30b8\u30b9\u30c8\u30ea\u306e\u30af\u30a8\u30ea\uff09<\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 70.4663%;\">\u30b3\u30de\u30f3\u30c9&amp;\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb<\/td>\n<td style=\"width: 34.456%;\"><a href=\"https:\/\/attack.mitre.org\/techniques\/T1573\/002\/\">T1573.002: Encrypted Channel: Asymmetric Cryptography\uff08\u6697\u53f7\u5316\u3055\u308c\u305f\u30c1\u30e3\u30cd\u30eb: \u975e\u5bfe\u79f0\u6697\u53f7\uff09<\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 70.4663%;\">\u30ea\u30e2\u30fc\u30c8\u30db\u30b9\u30c8\u304b\u3089\u306e\u30da\u30a4\u30ed\u30fc\u30c9\u8ee2\u9001<\/td>\n<td style=\"width: 34.456%;\"><a href=\"https:\/\/attack.mitre.org\/techniques\/T1105\/\">T1105: Ingress Tool Transfer\uff08\u5185\u90e8\u3078\u306e\u30c4\u30fc\u30eb\u8ee2\u9001\uff09<\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 70.4663%;\">\u5909\u66f4\u3055\u308c\u305fRC4\u6697\u53f7\u30c1\u30e3\u30f3\u30af\u5185\u306e\u30da\u30a4\u30ed\u30fc\u30c9<\/td>\n<td style=\"width: 34.456%;\"><a href=\"https:\/\/attack.mitre.org\/techniques\/T1027\/002\/\">T1027.002: Obfuscated Files or Information: Software Packing\uff08\u96e3\u8aad\u5316\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u307e\u305f\u306f\u60c5\u5831: \u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u30d1\u30c3\u30af\uff09<\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 70.4663%;\">\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u304cC2\u30b5\u30fc\u30d0\u30fc\u63a5\u7d9a\u524d\u306bWindows API\u306ekernel32!GetTickCountKernel32\u3092\u6700\u592765\u56de\u547c\u3073\u51fa\u3059\u3002\u30d5\u30a1\u30f3\u30af\u30b7\u30e7\u30f3 \u30d6\u30ed\u30c3\u30af\u3092\u6697\u53f7\u5316\u306a\u3044\u3057\u5fa9\u53f7\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u3002<\/td>\n<td style=\"width: 34.456%;\"><a href=\"https:\/\/attack.mitre.org\/techniques\/T1497\/003\/\">T1497.003: Time Based Evasion\uff08\u6642\u9593\u30d9\u30fc\u30b9\u306e\u56de\u907f\uff09<\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 70.4663%;\">\u30c0\u30a4\u30ca\u30df\u30c3\u30afDLL\u306e\u30a4\u30f3\u30dd\u30fc\u30c8\u3068API\u30eb\u30c3\u30af\u30a2\u30c3\u30d7<\/td>\n<td style=\"width: 34.456%;\"><a href=\"https:\/\/attack.mitre.org\/techniques\/T1106\/\">T1106 Native API\uff08\u30cd\u30a4\u30c6\u30a3\u30d6API\uff09<\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 70.4663%;\">Process Environment Block (PEB) \u3092\u53d6\u5f97\u3057\u3001IsDebugger\u30d5\u30e9\u30b0\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u309252\u56de\u30a4\u30c6\u30ec\u30fc\u30c8\u3059\u308b<\/td>\n<td style=\"width: 34.456%;\"><a href=\"https:\/\/attack.mitre.org\/techniques\/T1082\/\">T1082: System Information Discovery\uff08\u30b7\u30b9\u30c6\u30e0\u60c5\u5831\u306e\u63a2\u7d22\uff09<\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 104.922%;\" colspan=\"2\">C2\u30b5\u30fc\u30d0\u30fc\u63a5\u7d9a\u524d\u306emsvcrt!time\u30928\u56de\u547c\u3073\u51fa\u3059<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 104.922%;\" colspan=\"2\">API DNSAPI!DnsFlushResolverCache\u7d4c\u7531\u3067\u30db\u30b9\u30c8\u306eDNS\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30af\u30ea\u30a2\u3059\u308b<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 104.922%;\" colspan=\"2\">PEB\u306e_LDR_DATA_TABLE_ENTRY\u30e1\u30bf\u30c7\u30fc\u30bf\u69cb\u9020\u4f53\u306f\u4f5c\u6210\u3055\u308c\u305a\u3001\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u3066\u3044\u308b\u30d7\u30ed\u30bb\u30b9\u306ePEB\u306b\u306f\u3001\u30db\u30b9\u30c8\u4e0a\u3067\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u4e0d\u6b63\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u691c\u51fa\u306b\u4f7f\u308f\u308c\u308bDLL\u306e\u30ed\u30fc\u30c9\u8a18\u9332\u304c\u6b8b\u3089\u306a\u3044<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 104.922%;\" colspan=\"2\">\u30ed\u30fc\u30c9\u3055\u308c\u305f\u30da\u30a4\u30ed\u30fc\u30c9 \u30e2\u30b8\u30e5\u30fc\u30eb (DLL) \u306e\u30bf\u30a4\u30d7\u304cMEM_PRIVATE<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: center;\"><span style=\"color: #999999; font-size: 12pt;\"><sup><em>\u88681 \u5b9f\u884c\u3055\u308c\u308bx64\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u30b3\u30de\u30f3\u30c9<\/em><\/sup><\/span><\/p>\n<h4><a id=\"post-116929-_hnszmlfp7m8g\"><\/a><strong>BendyBear\u3068WaterBear\u306e\u6bd4\u8f03<\/strong><\/h4>\n<table style=\"width: 101.1%;\">\n<tbody>\n<tr>\n<td style=\"width: 29.5249%;\"><strong>\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8<\/strong><\/td>\n<td style=\"width: 17.1328%;\"><strong>WaterBear<\/strong><\/td>\n<td style=\"width: 135.356%;\"><strong>BendyBear<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 29.5249%;\">\u30d5\u30a1\u30a4\u30eb\u30bf\u30a4\u30d7<\/td>\n<td style=\"width: 17.1328%;\">EXE\/DLL<\/td>\n<td style=\"width: 135.356%;\">\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 29.5249%;\">\u30a4\u30f3\u30d7\u30e9\u30f3\u30c8\u306e\u7a2e\u985e<\/td>\n<td style=\"width: 17.1328%;\">\u30b9\u30c6\u30fc\u30b82<\/td>\n<td style=\"width: 135.356%;\">\u30b9\u30c6\u30fc\u30b80<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 29.5249%;\">RC4\u306e\u5909\u66f4<\/td>\n<td style=\"width: 17.1328%;\"><img  class=\"alignnone wp-image-116949 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-22.png\" alt=\"\" width=\"30\" height=\"31\" \/><\/td>\n<td style=\"width: 135.356%;\"><img  class=\"alignnone wp-image-116951 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-23.png\" alt=\"\" width=\"30\" height=\"31\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 29.5249%;\">\u8ffd\u52a0\u306e\u6697\u53f7\u5316<\/td>\n<td style=\"width: 17.1328%;\">\u4e0d\u660e<\/td>\n<td style=\"width: 135.356%;\">\u8ffd\u52a0\u3067XOR\u3092\u8a08\u7b97<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 29.5249%;\">16\u30d0\u30a4\u30c8\u306eXOR\u30ad\u30fc<\/td>\n<td style=\"width: 17.1328%;\"><img  class=\"alignnone wp-image-116953 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-24.png\" alt=\"\" width=\"30\" height=\"31\" \/><\/td>\n<td style=\"width: 135.356%;\"><img  class=\"alignnone wp-image-116955 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-25.png\" alt=\"\" width=\"30\" height=\"31\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 29.5249%;\">C2\u901a\u4fe1\u306b\u304a\u3051\u308b\u8a8d\u8a3c<\/td>\n<td style=\"width: 17.1328%;\"><img  class=\"alignnone wp-image-116957 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-26.png\" alt=\"\" width=\"30\" height=\"31\" \/><\/td>\n<td style=\"width: 135.356%;\"><img  class=\"alignnone wp-image-116959 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-27.png\" alt=\"\" width=\"30\" height=\"31\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 29.5249%;\">\u30b7\u30b0\u30cd\u30c1\u30e3\u691c\u8a3c\u30de\u30b8\u30c3\u30af \u30d0\u30a4\u30c8<\/td>\n<td style=\"width: 17.1328%;\">1F 40<\/p>\n<p>1F 43<\/td>\n<td style=\"width: 135.356%;\">1F 40<\/p>\n<p>1F 43<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 29.5249%;\">\u30da\u30a4\u30ed\u30fc\u30c9\u306e\u30c1\u30e3\u30f3\u30af\u5316<\/td>\n<td style=\"width: 17.1328%;\"><img  class=\"alignnone wp-image-116961 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-28.png\" alt=\"\" width=\"30\" height=\"31\" \/><\/td>\n<td style=\"width: 135.356%;\"><img  class=\"alignnone wp-image-116963 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-29.png\" alt=\"\" width=\"30\" height=\"31\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 29.5249%;\">\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30c3\u30af\u30b3\u30fc\u30c9<\/td>\n<td style=\"width: 17.1328%;\"><img  class=\"alignnone wp-image-116965 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-30.png\" alt=\"\" width=\"30\" height=\"31\" \/><\/td>\n<td style=\"width: 135.356%;\"><img  class=\"alignnone wp-image-116967 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-31.png\" alt=\"\" width=\"30\" height=\"31\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 29.5249%;\">\u30a4\u30f3\u30e1\u30e2\u30ea \u30ed\u30fc\u30c7\u30a3\u30f3\u30b0<\/td>\n<td style=\"width: 17.1328%;\"><img  class=\"alignnone wp-image-116969 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-32.png\" alt=\"\" width=\"30\" height=\"31\" \/><\/td>\n<td style=\"width: 135.356%;\"><img  class=\"alignnone wp-image-116971 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-33.png\" alt=\"\" width=\"30\" height=\"31\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 29.5249%;\">PEB \u30c7\u30d0\u30c3\u30ac \u30c1\u30a7\u30c3\u30af<\/td>\n<td style=\"width: 17.1328%;\"><img  class=\"alignnone wp-image-116973 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-34.png\" alt=\"\" width=\"30\" height=\"31\" \/><\/td>\n<td style=\"width: 135.356%;\"><img  class=\"alignnone wp-image-116975 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-35.png\" alt=\"\" width=\"30\" height=\"31\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 29.5249%;\">\u30d1\u30bf\u30fc\u30f3\u9664\u53bb<\/td>\n<td style=\"width: 17.1328%;\"><img  class=\"alignnone wp-image-116977 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-36.png\" alt=\"\" width=\"30\" height=\"31\" \/><\/td>\n<td style=\"width: 135.356%;\"><img  class=\"alignnone wp-image-116979 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-37.png\" alt=\"\" width=\"30\" height=\"31\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 29.5249%;\">\u95a2\u6570\u30eb\u30fc\u30c1\u30f3\u306e\u6697\u53f7\u5316\/\u5fa9\u53f7<\/td>\n<td style=\"width: 17.1328%;\"><img  class=\"alignnone wp-image-116981 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-38.png\" alt=\"\" width=\"30\" height=\"26\" \/><\/td>\n<td style=\"width: 135.356%;\"><img  class=\"alignnone wp-image-116983 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-39.png\" alt=\"\" width=\"30\" height=\"26\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 29.5249%;\">API\u30d5\u30c3\u30af<\/td>\n<td style=\"width: 17.1328%;\"><img  class=\"alignnone wp-image-116985 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-40.png\" alt=\"\" width=\"30\" height=\"26\" \/><\/td>\n<td style=\"width: 135.356%;\"><img  class=\"alignnone wp-image-116987 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-41.png\" alt=\"\" width=\"30\" height=\"30\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 29.5249%;\">\u30d7\u30ed\u30bb\u30b9\u306e\u96a0\u853d<\/td>\n<td style=\"width: 17.1328%;\"><img  class=\"alignnone wp-image-116989 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-42.png\" alt=\"\" width=\"30\" height=\"26\" \/><\/td>\n<td style=\"width: 135.356%;\"><img  class=\"alignnone wp-image-116991 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-43.png\" alt=\"\" width=\"30\" height=\"30\" \/><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 29.5249%;\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30e9\u30d5\u30a3\u30c3\u30af \u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/td>\n<td style=\"width: 17.1328%;\"><img  class=\"alignnone wp-image-116993 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-44.png\" alt=\"\" width=\"30\" height=\"26\" \/><\/td>\n<td style=\"width: 135.356%;\"><img  class=\"alignnone wp-image-116995 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-45.png\" alt=\"\" width=\"30\" height=\"30\" \/><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: center;\"><span style=\"color: #999999; font-size: 12pt;\"><sup><em>\u88682 BendyBear\u3068WaterBear\u306e\u6bd4\u8f03 <\/em><\/sup><\/span><\/p>\n<p><strong>\u30d5\u30a1\u30a4\u30eb\u306e\u7a2e\u985e<\/strong>: WaterBear\u306f\u30b9\u30bf\u30f3\u30c9\u30a2\u30ed\u30f3PE\/EXE\u3002BendyBear\u306f\u30ed\u30fc\u30c0\u307e\u305f\u306f\u30b3\u30fc\u30c9 \u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u3092\u5fc5\u8981\u3068\u3059\u308bx64\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3002<\/p>\n<p><strong>\u30a4\u30f3\u30d7\u30e9\u30f3\u30c8\u30bf\u30a4\u30d7<\/strong>: WaterBear\u306f\u591a\u304f\u306e\u6a5f\u80fd\u3092\u5099\u3048\u305f\u30b9\u30c6\u30fc\u30b82\u30a4\u30f3\u30d7\u30e9\u30f3\u30c8\u3067\u3001BendyBear\u306f\u30b9\u30c6\u30fc\u30b80\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u3002<\/p>\n<p><strong>\u5909\u66f4\u3055\u308c\u305fRC4\u6697\u53f7<\/strong>: WaterBear\u3082BendyBear\u3082\u5909\u66f4\u3055\u308c\u305fRC4\u3092\u4f7f\u7528\u3059\u308b\u304c\u3001\u5b9f\u88c5\u306f\u591a\u5c11\u7570\u306a\u308b\u3002WaterBear\u306f\u3001\u9375\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0 \u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u90e8\u3067\u30b5\u30a4\u30ba256\u306eRC4 S\u30dc\u30c3\u30af\u30b9\u3092\u4f7f\u3063\u3066\u30d0\u30a4\u30c8\u30b7\u30d5\u30c8\u3068\u52a0\u7b97\u3092\u884c\u3046\u3002BendyBear\u306f\u9375\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0 \u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u90e8\u3067\u30b5\u30a4\u30ba258\u306eRC4 S\u30dc\u30c3\u30af\u30b9\u3092\u4f7f\u7528\u3057\u3066XOR\u3092\u5b9f\u884c\u3059\u308b\u3002<\/p>\n<p><strong>\u8ffd\u52a0\u306e\u6697\u53f7\u5316<\/strong>: \u3069\u3061\u3089\u3082\u6697\u53f7\u5316\u306b\u3088\u308a\u30a2\u30fc\u30c6\u30a3\u30d5\u30a1\u30af\u30c8\u3092\u96a0\u853d\u3059\u308b\u304c\u3001BendyBear\u306e\u65b9\u306b\u306f\u8ffd\u52a0\u306eXOR\u6697\u53f7\u5316\u30b9\u30c6\u30c3\u30d7\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3002<\/p>\n<p><strong>16\u30d0\u30a4\u30c8\u306eXOR\u30ad\u30fc<\/strong>: \u3069\u3061\u3089\u3082\u540c\u305816\u30d0\u30a4\u30c8\u306eXOR\u30ad\u30fc<span style=\"font-family: 'courier new', courier, monospace;\">0x6162636465666768696A6B6C6D6E6f00<\/span>\u3067\u30d7\u30ec\u30bb\u30c3\u30b7\u30e7\u30f3 \u30ad\u30fc\u3092\u751f\u6210\u3059\u308b\u3002<\/p>\n<p><strong>C2\u901a\u4fe1\u306b\u304a\u3051\u308b\u8a8d\u8a3c <\/strong>: WaterBear\u3082BendyBear\u308210\u30d0\u30a4\u30c8\u306e\u521d\u671f\u30c1\u30e3\u30ec\u30f3\u30b8 \u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3057\u3001\u305d\u306e\u5f8c\u306732\u30d0\u30a4\u30c8\u306e\u30bb\u30c3\u30b7\u30e7\u30f3 \u30ad\u30fc\u3092\u9001\u4fe1\u3059\u308b\u3002<\/p>\n<p><strong>\u30b7\u30b0\u30cd\u30c1\u30e3\u691c\u8a3c\u30de\u30b8\u30c3\u30af\u30d0\u30a4\u30c8<\/strong>: WaterBear\u3082BendyBear\u3082\u540c\u4e00\u306e\u5408\u81f4\u3059\u308b\u30de\u30b8\u30c3\u30af\u30d0\u30a4\u30c8\u691c\u8a3c\u5024\u3092\u4f7f\u3046\u3002<\/p>\n<p><strong>\u30da\u30a4\u30ed\u30fc\u30c9\u306e\u30c1\u30e3\u30f3\u30af\u5316<\/strong>: WaterBear\u3082BendyBear\u3082\u30da\u30a4\u30ed\u30fc\u30c9\u304c\u6697\u53f7\u5316\u3055\u308c\u305f\u30c1\u30e3\u30f3\u30af\u3067\u9001\u4fe1\u3055\u308c\u308b\u3053\u3068\u3092\u60f3\u5b9a\u3057\u3066\u3044\u308b\u3002<\/p>\n<p><strong>\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30c3\u30af\u30b3\u30fc\u30c9<\/strong>: WaterBear\u3082BendyBear\u3082\u30e9\u30f3\u30c0\u30e0\u30d0\u30a4\u30c8\u306b\u3088\u308b\u30e9\u30f3\u30bf\u30a4\u30e0\u5b9f\u884c\u4e2d\u306e\u30b3\u30fc\u30c9\u64cd\u4f5c\u3092\u63a1\u7528\u3057\u3066\u3044\u308b\u3002<\/p>\n<p><strong>\u30a4\u30f3\u30e1\u30e2\u30ea \u30ed\u30fc\u30c7\u30a3\u30f3\u30b0<\/strong>: WaterBear\u3082BendyBear\u3082\u30da\u30a4\u30ed\u30fc\u30c9\u306e\u30a4\u30f3\u30e1\u30e2\u30ea \u30ed\u30fc\u30c7\u30a3\u30f3\u30b0\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u3002<\/p>\n<p><strong>PEB \u30c7\u30d0\u30c3\u30ac\u30c1\u30a7\u30c3\u30af <\/strong>: WaterBear\u3082BendyBear\u3082\u30b3\u30fc\u30c9\u304c\u30c7\u30d0\u30c3\u30b0\u74b0\u5883\u4e0b\u306b\u304a\u304b\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/p>\n<p><strong>\u30d1\u30bf\u30fc\u30f3\u9664\u53bb<\/strong>: WaterBear\u3082BendyBear\u3082\u4f7f\u7528\u6642\u306b\u5fa9\u53f7\u3057\u305f\u6587\u5b57\u5217\u3092\u518d\u6697\u53f7\u5316\u3059\u308b\u3002<\/p>\n<p><strong>\u95a2\u6570\u30eb\u30fc\u30c1\u30f3\u306e\u6697\u53f7\u5316\/\u5fa9\u53f7<\/strong>: WaterBear\u3082BendyBear\u3082\u30e9\u30f3\u30bf\u30a4\u30e0\u95a2\u6570\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u96e3\u8aad\u5316\u3059\u308b\u3002<\/p>\n<p><strong>API\u30d5\u30c3\u30af<\/strong>: WaterBear\u306e\u4e9c\u7a2e\u306fAPI\u30d5\u30c3\u30af\u3092\u5b9f\u88c5\u3057\u3066\u3044\u308b\u304cBendyBear\u3067\u306f\u5b9f\u88c5\u3057\u3066\u3044\u306a\u3044\u3002<\/p>\n<p><strong>\u30d7\u30ed\u30bb\u30b9\u96a0\u853d<\/strong>: WaterBear\u306e\u4e9c\u7a2e\u306f\u3001API\u30d5\u30c3\u30af\u7d4c\u7531\u3067\u30d7\u30ed\u30bb\u30b9\u3092\u96a0\u853d\u53ef\u80fd\u3060\u304cBendyBear\u306f\u3053\u306e\u6a5f\u80fd\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u306a\u3044\u3002<\/p>\n<p><strong>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30e9\u30d5\u30a3\u30c3\u30af \u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/strong>: WaterBear\u306e\u4e9c\u7a2e\u306fAPI\u30d5\u30c3\u30af\u7d4c\u7531\u3067\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u307e\u305f\u306f\u96a0\u853d\u3067\u304d\u308b\u304cBendyBear\u306f\u3053\u306e\u6a5f\u80fd\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u306a\u3044\u3002<\/p>\n<h2><a id=\"post-116929-_jypwnxxa4vh1\"><\/a>\u7d50\u8ad6<\/h2>\n<p>BendyBear\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306b\u306f\u3001\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3067\u306f\u3042\u307e\u308a\u898b\u304b\u3051\u306a\u3044\u9ad8\u5ea6\u306a\u6a5f\u80fd\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u5206\u6790\u9632\u6b62\u6280\u8853\u3084\u30b7\u30b0\u30cd\u30c1\u30e3\u9632\u6b62\u691c\u8a3c\u306e\u4f7f\u7528\u306f\u3001\u958b\u767a\u8005\u304c\u30b9\u30c6\u30eb\u30b9\u5316\u3084\u691c\u51fa\u306e\u56de\u907f\u306b\u95a2\u5fc3\u304c\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u30ab\u30b9\u30bf\u30e0\u6697\u53f7\u5316\u30eb\u30fc\u30c1\u30f3\u3084\u30d0\u30a4\u30c8\u64cd\u4f5c\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u3053\u3068\u304b\u3089\u306f\u3001\u9ad8\u5ea6\u306a\u6280\u8853\u529b\u304c\u3046\u304b\u304c\u308f\u308c\u307e\u3059\u3002<\/p>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306e\u304a\u5ba2\u69d8\u306f\u3001\u6b21\u306e\u65b9\u6cd5\u3067\u672c\u7a3f\u3067\u6982\u8aac\u3057\u305f\u653b\u6483\u304b\u3089\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u3053\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u308bC2\u30c9\u30e1\u30a4\u30f3\u306f\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/products\/threat-detection-and-prevention\/dns-security\">DNS\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/a>\u3001<a href=\"https:\/\/docs.paloaltonetworks.com\/pan-os\/10-0\/pan-os-admin\/url-filtering\/url-filtering-overview.html\">URL\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/a>\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/next-generation-firewall\">NFGW<\/a>\u306e<a href=\"https:\/\/www.paloaltonetworks.jp\/products\/secure-the-network\/wildfire\">WildFire<\/a>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u306b\u3088\u308a\u30de\u30eb\u30a6\u30a7\u30a2\u3068\u5206\u985e\u3055\u308c\u307e\u3059\u3002<\/li>\n<li><a href=\"https:\/\/www.paloaltonetworks.jp\/cortex\/cortex-xdr\">Cortex XDR<\/a>\u306f\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u4e2d\u306b\u8b58\u5225\u3057\u3066\u30d6\u30ed\u30c3\u30af\u3057\u307e\u3059\u3002<\/li>\n<li><a href=\"https:\/\/www.paloaltonetworks.jp\/technologies\/app-id\">App-ID<\/a>(NGFW\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u5206\u985e\u30b7\u30b9\u30c6\u30e0) \u306f\u3001\u3069\u306e\u3088\u3046\u306a\u30dd\u30fc\u30c8\u756a\u53f7\u3001\u30d7\u30ed\u30c8\u30b3\u30eb\u3001\u6697\u53f7\u5316 (SSH\/SSL)\u3001\u305d\u306e\u4ed6\u56de\u907f\u6226\u8853\u304c\u4f7f\u308f\u308c\u3066\u3044\u3066\u3082\u5f53\u8a72\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u8b58\u5225\u3057\u307e\u3059\u3002\u3053\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306f443\/tcp\u7d4c\u7531\u3067\u3001\u6b63\u898f\u306eSSL\u305d\u306e\u4ed6\u306e\u65e2\u77e5\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u6e96\u62e0\u3057\u3066\u3044\u306a\u3044\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3067\u901a\u4fe1\u3057\u3088\u3046\u3068\u3057\u307e\u3059\u3002\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3068\u3057\u3066\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30dd\u30ea\u30b7\u30fc\u3067\u4e0d\u660e\u306a\u30a2\u30a6\u30c8\u30d0\u30a6\u30f3\u30c9TCP\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u30d6\u30ed\u30c3\u30af\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2><a id=\"post-116929-_uodc8dg4l52f\"><\/a>IoC<\/h2>\n<h4><a id=\"post-116929-_5knp9eupotcf\"><\/a><strong>\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306e\u30b5\u30f3\u30d7\u30eb<\/strong><\/h4>\n<p>x64 \u2013\uff08\u30d0\u30fc\u30b8\u30e7\u30f30.24\uff09<br \/>\n<span style=\"font-family: 'courier new', courier, monospace;\">64CC899EC85F612270FCFB120A4C80D52D78E68B05CAF1014D2FE06522F1E2D0 wg1.inkeslive[.]com<\/span><\/p>\n<p>x86 \u2013\uff08\u30d0\u30fc\u30b8\u30e7\u30f30.1\uff09<br \/>\n<span style=\"font-family: 'courier new', courier, monospace;\">49901034216a16cfd05c613f438eccee4a7bf6079a7988b3e7094d9498379558 web2008.rutentw[.]com<\/span><\/p>\n<h4><a id=\"post-116929-_o7guvru5np20\"><\/a><strong>x86 WaterBear\u30ed\u30fc\u30c0<\/strong><\/h4>\n<p>\u6b21\u306e\u5b9f\u884c\u53ef\u80fd\u30d5\u30a1\u30a4\u30eb\u304c\u3001\u53e4\u3044WaterBear\u306ex86\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u542b\u3080\u30ed\u30fc\u30c0\/\u30a4\u30f3\u30b8\u30a7\u30af\u30bf\u3068\u3057\u3066\u8b58\u5225\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306e\u30b3\u30fc\u30c9\u306f\u300149901034216\u2026\u3067\u59cb\u307e\u308b\u30d0\u30fc\u30b8\u30e7\u30f3 0.1\u306ex86\u30b5\u30f3\u30d7\u30eb\u306e\u3082\u306e\u3068\u540c\u4e00\u3067\u3059\u3002<\/p>\n<p><span style=\"font-family: 'courier new', courier, monospace;\">5d1414b47d88e95ae6612d3fc211c29b35cc5db4a8a992f5e27cff5203ebf44b<br \/>\n<\/span><span style=\"font-family: 'courier new', courier, monospace;\">9880ba4f93cade2f6bbb4cc8efdcf087e8ac51b5c209ee32ad8134eb87ef70e1<br \/>\n<\/span><span style=\"font-family: 'courier new', courier, monospace;\">682122f34027e3f8025928d446989b02952449f5e5930c2670f8f789f41573ff<br \/>\n<\/span><span style=\"font-family: 'courier new', courier, monospace;\">2a09ec2d6edadd06e18c841e0ed794ba3eeb21818476f75ccc0e5d40e08eac80<br \/>\n<\/span><span style=\"font-family: 'courier new', courier, monospace;\">76ef704d21fbaaceca8a131429ccfb9f5de3d8f43a160ddd281ffeafc391eb98<\/span><\/p>\n<h2><a id=\"post-116929-_hjrlv4duncv3\"><\/a>\u8ffd\u52a0\u8cc7\u6599<\/h2>\n<p><a href=\"https:\/\/www.taiwannews.com.tw\/en\/news\/3991160\">\u53f0\u6e7e\u82f1\u6587\u65b0\u805e Taiwan News<\/a>: Taiwan urges blocking 11 China-linked phishing domains\uff08\u53f0\u6e7e\u3001\u4e2d\u56fd\u3068\u30ea\u30f3\u30af\u3059\u308b11\u306e\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30c9\u30e1\u30a4\u30f3\u306e\u30d6\u30ed\u30c3\u30af\u3092\u5f37\u304f\u63a8\u5968\uff09<br \/>\n<a href=\"https:\/\/www.ithome.com.tw\/news\/139504\">iThome\u30cb\u30e5\u30fc\u30b9<\/a>: \u8abf\u67e5\u5c40\u9996\u5ea6\u63ed\u9732\u570b\u5167\u653f\u5e9c\u59d4\u5916\u5ee0\u5546\u6210\u8cc7\u5b89\u7834\u53e3\u7684\u73fe\u6cc1\uff0c\u8fd1\u671f\u81f3\u5c1110\u500b\u516c\u5bb6\u55ae\u4f4d\u82074\u5bb6\u8cc7\u8a0a\u670d\u52d9\u4f9b\u61c9\u5546\u9047\u5bb3\uff08\u8907\u6570\u306e\u53f0\u6e7e\u653f\u5e9c\u6a5f\u95a2\u30cf\u30c3\u30ad\u30f3\u30b0\u4e8b\u4ef6\u306b\u95a2\u9023\u3057\u305f\u53f0\u6e7e\u6cd5\u52d9\u90e8\u8abf\u67fb\u5c40\u306e\u6700\u8fd1\u306e\u8abf\u67fb\uff09<br \/>\n<a href=\"https:\/\/jsac.jpcert.or.jp\/archive\/2020\/pdf\/JSAC2020_2_ycy-aragorn_en.pdf\">TeamT5<\/a>: Evil Hidden in Shellcode: The Evolution of malware DbgPrint.\uff08\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306b\u96a0\u3055\u308c\u305f\u60aa: \u30de\u30eb\u30a6\u30a7\u30a2 DbgPrint\u306e\u9032\u5316\uff09<br \/>\n<a href=\"https:\/\/www.trendmicro.com\/en_us\/research\/19\/l\/waterbear-is-back-uses-api-hooking-to-evade-security-product-detection.html\">TrendMicro <\/a>: WaterBear Returns, Uses API Hooking to Evade Security.\uff08WaterBear\u518d\u3073: API\u30d5\u30c3\u30af\u3067\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u56de\u907f\uff09<br \/>\n<a href=\"https:\/\/www.trendmicro.com\/en_us\/research\/17\/f\/following-trail-blacktech-cyber-espionage-campaigns.html\">TrendMicro <\/a>: The Trail of BlackTech\u2019s Cyber Espionage Campaigns.\uff08BlackTech\u306e\u30b5\u30a4\u30d0\u30fc\u30b9\u30d1\u30a4\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u3092\u8ffd\u3046\uff09<br \/>\n<a href=\"https:\/\/medium.com\/cycraft\/taiwan-government-targeted-by-multiple-cyberattacks-in-april-2020-1980acde92b0\">CryCraft Technology Corp<\/a> \u2013 Taiwan Government Targeted by Multiple Cyberattacks in April 2020 Part 1: Waterbear Malware\uff082020\u5e744\u6708 \u53f0\u6e7e\u653f\u5e9c\u304c\u8907\u6570\u306e\u30b5\u30a4\u30d0\u30fc\u653b\u6483\u306e\u6a19\u7684\u306b\u3002\u30d1\u30fc\u30c81: WaterBear\u30de\u30eb\u30a6\u30a7\u30a2\uff09<br \/>\n<a href=\"https:\/\/blogs.jpcert.or.jp\/en\/2020\/11\/elf-plead.html\">JPCERT\/CC Eyes<\/a> \u2013 ELF_PLEAD \u2013 Linux Malware Used by BlackTech\uff08BlackTech\u306e\u4f7f\u3046Linux\u30de\u30eb\u30a6\u30a7\u30a2ELF_PLEAD\uff09<\/p>\n<h2><a id=\"post-116929-_6ovadee9r6bp\"><\/a>\u4ed8\u9332<\/h2>\n<h4><a id=\"post-116929-_531ysdr48i1v\"><\/a><strong>\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306e\u6982\u5ff5\u5b9f\u8a3c (PoC)<\/strong><\/h4>\n<p>\u30b9\u30c6\u30fc\u30b8\u30e3\u306b\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u63d0\u4f9b\u3057\u3001\u30e1\u30c3\u30bb\u30fc\u30b8 \u30dc\u30c3\u30af\u30b9\u3092\u8868\u793a\u3059\u308b\u30da\u30a4\u30ed\u30fc\u30c9 (DLL) \u3092\u9001\u4fe1\u3059\u308b\u30e2\u30c3\u30af\u7528C2\u30b5\u30fc\u30d0\u30fc:<\/p>\n<table style=\"width: 98.9829%;\">\n<tbody>\n<tr>\n<td style=\"width: 100%;\"><span style=\"font-family: 'courier new', courier, monospace;\">python.exe U42ETHOS_C2.py -l 8080 -p c:\\temp\\DLLSample.dll<\/span><\/p>\n<p><span style=\"font-family: 'courier new', courier, monospace;\">[+] Started U42ETHOS_C2.py ver 1.0.0 waiting for connection on TCP port 8080<\/span><\/p>\n<p><span style=\"font-family: 'courier new', courier, monospace;\">[!] Using payload file c:\\temp\\DLLSample.dll<\/span><\/p>\n<p><span style=\"font-family: 'courier new', courier, monospace;\">[!] Received new connection from: (\u2018192.168.163.138\u2019, 49918)<\/span><\/p>\n<p><span style=\"font-family: 'courier new', courier, monospace;\">[-] Received Encrypted challenge Request Packet\u2013&gt; 40da9a64bf3992d39db6<\/span><\/p>\n<p><span style=\"font-family: 'courier new', courier, monospace;\">[-] Decrypted challenge Request packet\u2013&gt; 46401f8c032320000000<\/span><\/p>\n<p><span style=\"font-family: 'courier new', courier, monospace;\">[+] Session key 1\u2013&gt; 9816f78b57fff54efb5419202d81a729<\/span><\/p>\n<p><span style=\"font-family: 'courier new', courier, monospace;\">[+] Session key 2\u2013&gt; 6ec83a6e4d8bc4e28496cac865878574<\/span><\/p>\n<p><span style=\"font-family: 'courier new', courier, monospace;\">[+] Computed PreSessionKey\u2013&gt; f97494ef32999226923e724c40efc829<\/span><\/p>\n<p><span style=\"font-family: 'courier new', courier, monospace;\">[+] Challenge command\u2013&gt; a3601149a495d02598b7<\/span><\/p>\n<p><span style=\"font-family: 'courier new', courier, monospace;\">[-] Challenge key is\u2013&gt; f55bf1f67d6ae90bf1ed3479875dcdcd<\/span><\/p>\n<p><span style=\"font-family: 'courier new', courier, monospace;\">[+] Payload Size is 00920100<\/span><\/p>\n<p><span style=\"font-family: 'courier new', courier, monospace;\">[!] Payload sent to stager. Check if executed<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: center;\"><span style=\"color: #999999; font-size: 12pt;\"><em><sup>\u56f39 Unit 42\u306b\u3088\u308b\u30e2\u30c3\u30af\u7528C2\u30b5\u30fc\u30d0\u30fc<\/sup> <\/em><\/span><\/p>\n<figure id=\"attachment_116996\" class=\"wp-caption aligncenter\" style=\"width: 900px;\" aria-describedby=\"caption-attachment-116996\">\n<p><figure id=\"attachment_116997\" aria-describedby=\"caption-attachment-116997\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-116997 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-46.png\" alt=\"BendyBear\u306e\u30b5\u30f3\u30d7\u30eb \u30b9\u30c6\u30fc\u30b8\u30e3\u306b\u30c6\u30b9\u30c8\u7528DLL\u3092\u30a4\u30f3\u30e1\u30e2\u30ea\u30ed\u30fc\u30c7\u30a3\u30f3\u30b0\u3055\u305b\u305f\u3068\u3053\u308d \" width=\"900\" height=\"367\" \/><figcaption id=\"caption-attachment-116997\" class=\"wp-caption-text\">\u56f310 \u30b9\u30c6\u30fc\u30b8\u30e3\u306e\u30a4\u30f3\u30e1\u30e2\u30ea \u30ed\u30fc\u30c7\u30a3\u30f3\u30b0 \u30c6\u30b9\u30c8\u7528DLL\u306e\u4f8b<\/figcaption><\/figure><figcaption id=\"caption-attachment-116996\" class=\"wp-caption-text\"><\/figcaption><\/figure>\n<p>\u56f39\u306f\u3001\u30b9\u30c6\u30fc\u30b8\u30e3\u3068\u5bfe\u8a71\u3059\u308b\u305f\u3081\u306b\u79c1\u305f\u3061\u304c\u4f5c\u6210\u3057\u305fPython\u306e\u30e2\u30c3\u30af\u7528C2\u30b5\u30fc\u30d0\u30fc\u3067\u3059\u30028080\/tcp\u3067\u30ea\u30c3\u30b9\u30f3\u3059\u308b\u3088\u3046\u306b\u69cb\u6210\u3057\u3066\u3042\u308a\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u30c6\u30b9\u30c8\u7528DLL\u3067\u3001\u3053\u306e\u30c6\u30b9\u30c8\u7528DLL\u304c<span style=\"font-family: 'courier new', courier, monospace;\">calc.exe<\/span>\u3092\u8d77\u52d5\u3057\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u30dc\u30c3\u30af\u30b9 (Hello, Implant) \u3092\u8868\u793a\u3057\u307e\u3059\u3002\u56f310\u306f\u3001\u30ab\u30b9\u30bf\u30e0 \u30ed\u30fc\u30c0\u3092\u4ecb\u3057\u3066\u30a4\u30f3\u30e1\u30e2\u30ea\u3067\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u3066\u3044\u308bWindows10\u30db\u30b9\u30c8\u3067\u3059\u3002\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u304c\u30e2\u30c3\u30af\u7528C2\u30b5\u30fc\u30d0\u30fc\u3068\u901a\u4fe1\u3059\u308b\u3088\u3046\u306b\u69cb\u6210\u3057\u3066\u304a\u304d\u307e\u3057\u305f\u3002<\/p>\n<h4><a id=\"post-116929-_knryjjv58o1r\"><\/a><strong>\u4e0a\u8a18\u30da\u30a4\u30ed\u30fc\u30c9\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\uff08\u5f8c\u534a\u7701\u7565\uff09<\/strong><\/h4>\n<figure id=\"attachment_116998\" class=\"wp-caption aligncenter\" style=\"width: 900px;\" aria-describedby=\"caption-attachment-116998\">\n<p><figure id=\"attachment_116999\" aria-describedby=\"caption-attachment-116999\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-116999 lozad\"  data-src=\"https:\/\/unit42-preview.paloaltonetworks.com\/wp-content\/uploads\/2021\/02\/word-image-47.png\" alt=\"\u56f311 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30e9\u30d5\u30a3\u30c3\u30af \u30ad\u30e3\u30d7\u30c1\u30e3\u306e\u30b5\u30f3\u30d7\u30eb\" width=\"900\" height=\"1312\" \/><figcaption id=\"caption-attachment-116999\" class=\"wp-caption-text\">\u56f311 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30e9\u30d5\u30a3\u30c3\u30af \u30ad\u30e3\u30d7\u30c1\u30e3\u306e\u30b5\u30f3\u30d7\u30eb<\/figcaption><\/figure><figcaption id=\"caption-attachment-116998\" class=\"wp-caption-text\"><\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981 \u975e\u5e38\u306b\u9806\u5fdc\u6027\u304c\u9ad8\u304f\u3001\u9ad8\u5ea6\u306b\u6d17\u7df4\u3055\u308c\u305f\u300110,000\u30d0\u30a4\u30c8\u3092\u8d85\u3048\u308b\u30de\u30b7\u30f3\u30b3\u30fc\u30c9\u3002\u305d\u308c\u304c\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u8105\u5a01\u30a4\u30f3\u30c6\u30ea\u30b8\u30a7\u30f3\u30b9\u30ea\u30b5\u30fc\u30c1\u30c1\u30fc\u30e0 Unit 42\u306e\u30ea\u30b5\u30fc\u30c1\u30e3\u30fc\u304c\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u300c\u718a\uff08Bear\uff09\u300d\u306e\u30b3\u30fc\u30c9<\/p>\n","protected":false},"author":61,"featured_media":134350,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[4321,1974,4428],"tags":[6141,6143,6145,6139,6147,6149,6150],"product_categories":[4441,4443,4444,4343,4448,4456],"coauthors":[831],"class_list":["post-117032","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-threat-research","category-malware-ja","category-threat-research-ja","tag-bendybear-ja","tag-blacktech-ja","tag-dbgprint-ja","tag-manga-taurus-ja","tag-shellcode-ja","tag-taidoor-ja","tag-waterbear","product_categories-advanced-dns-security-ja","product_categories-advanced-url-filtering-ja","product_categories-advanced-wildfire-ja","product_categories-cortex-xdr","product_categories-cortex-xdr-ja","product_categories-next-generation-firewall-ja"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>BendyBear: \u30b5\u30a4\u30d0\u30fc\u30b9\u30d1\u30a4\u30b0\u30eb\u30fc\u30d7BlackTech\u3068\u30ea\u30f3\u30af\u3055\u308c\u305f\u65b0\u3057\u3044\u4e2d\u56fd\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9<\/title>\n<meta name=\"description\" content=\"\u65b0\u305f\u306a\u4e2d\u56fd\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u300cBendyBear\u300d\u306f\u3001APT\u304c\u63a1\u7528\u3057\u305f\u306a\u304b\u3067\u3082\u3001\u6700\u3082\u6d17\u7df4\u3055\u308c\u3001\u8a2d\u8a08\u304c\u5de7\u307f\u3067\u3001\u691c\u51fa\u56f0\u96e3\u306a\u30b5\u30f3\u30d7\u30eb\u3067\u3059\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/unit42.paloaltonetworks.com\/ja\/bendybear-shellcode-blacktech\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"BendyBear: \u30b5\u30a4\u30d0\u30fc\u30b9\u30d1\u30a4\u30b0\u30eb\u30fc\u30d7BlackTech\u3068\u30ea\u30f3\u30af\u3055\u308c\u305f\u65b0\u3057\u3044\u4e2d\u56fd\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\" \/>\n<meta property=\"og:description\" content=\"\u65b0\u305f\u306a\u4e2d\u56fd\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u300cBendyBear\u300d\u306f\u3001APT\u304c\u63a1\u7528\u3057\u305f\u306a\u304b\u3067\u3082\u3001\u6700\u3082\u6d17\u7df4\u3055\u308c\u3001\u8a2d\u8a08\u304c\u5de7\u307f\u3067\u3001\u691c\u51fa\u56f0\u96e3\u306a\u30b5\u30f3\u30d7\u30eb\u3067\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/unit42.paloaltonetworks.com\/ja\/bendybear-shellcode-blacktech\/\" \/>\n<meta property=\"og:site_name\" content=\"Unit 42\" \/>\n<meta property=\"article:published_time\" content=\"2021-02-09T11:00:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/08_Nation-State-cyberattacks_1920x900.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Mike Harbison\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"BendyBear: \u30b5\u30a4\u30d0\u30fc\u30b9\u30d1\u30a4\u30b0\u30eb\u30fc\u30d7BlackTech\u3068\u30ea\u30f3\u30af\u3055\u308c\u305f\u65b0\u3057\u3044\u4e2d\u56fd\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9","description":"\u65b0\u305f\u306a\u4e2d\u56fd\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u300cBendyBear\u300d\u306f\u3001APT\u304c\u63a1\u7528\u3057\u305f\u306a\u304b\u3067\u3082\u3001\u6700\u3082\u6d17\u7df4\u3055\u308c\u3001\u8a2d\u8a08\u304c\u5de7\u307f\u3067\u3001\u691c\u51fa\u56f0\u96e3\u306a\u30b5\u30f3\u30d7\u30eb\u3067\u3059\u3002","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/unit42.paloaltonetworks.com\/ja\/bendybear-shellcode-blacktech\/","og_locale":"ja_JP","og_type":"article","og_title":"BendyBear: 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