{"id":121736,"date":"2022-01-25T06:00:29","date_gmt":"2022-01-25T14:00:29","guid":{"rendered":"https:\/\/unit42.paloaltonetworks.com\/?p=121736"},"modified":"2022-05-25T19:17:11","modified_gmt":"2022-05-26T02:17:11","slug":"excel-add-ins-malicious-xll-files-agent-tesla","status":"publish","type":"post","link":"https:\/\/unit42.paloaltonetworks.com\/ja\/excel-add-ins-malicious-xll-files-agent-tesla\/","title":{"rendered":"Excel\u30a2\u30c9\u30a4\u30f3\u306e\u5175\u5668\u5316[\u524d\u7de8]: \u60aa\u610f\u306e\u3042\u308bXLL\u30d5\u30a1\u30a4\u30eb\u3068Agent Tesla\u306e\u30b1\u30fc\u30b9\u30b9\u30bf\u30c7\u30a3"},"content":{"rendered":"<h2>\u6982\u8981<\/h2>\n<p>2021\u5e747\u670827\u65e5\u304b\u308912\u67081\u65e5\u306b\u304b\u3051\u3001Unit 42\u306e\u30ea\u30b5\u30fc\u30c1\u30e3\u30fc\u306fExcel\u306e\u30a2\u30c9\u30a4\u30f3(XLL)\u3084Office 4.0\u306e\u30de\u30af\u30ed\u304c\u30c9\u30ed\u30c3\u30d7\u3057\u305fAgent Tesla\u3084Dridex\u30de\u30eb\u30a6\u30a7\u30a2\u30b5\u30f3\u30d7\u30eb\u306e\u65b0\u305f\u306a\u6025\u5897\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002Excel 4.0\u306e\u30de\u30af\u30ed\u30c9\u30ed\u30c3\u30d1\u306f\u4e3b\u306bDridex\u3092\u30c9\u30ed\u30c3\u30d7\u3059\u308b\u306e\u306b\u4f7f\u308f\u308c\u3001XLL\u306e\u30c9\u30ed\u30c3\u30d1\u306fAgent Tesla\u3068Dridex\u306e\u4e21\u65b9\u3092\u30c9\u30ed\u30c3\u30d7\u3059\u308b\u306e\u306b\u4f7f\u308f\u308c\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002\u60aa\u610f\u306e\u3042\u308bXLL\u30d5\u30a1\u30a4\u30eb\u306f\u304b\u306a\u308a\u4ee5\u524d\u304b\u3089\u77e5\u3089\u308c\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u8105\u5a01\u72b6\u6cc1\u3078\u306e\u518d\u767b\u5834\u306f\u65b0\u305f\u306a\u50be\u5411\u3067\u3001\u540c\u611f\u67d3\u30d9\u30af\u30bf\u30fc\u3078\u306e\u30b7\u30d5\u30c8\u3092\u793a\u3059\u3082\u306e\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u78ba\u8a8d\u3055\u308c\u305fXLL\u30d5\u30a1\u30a4\u30eb\u306f\u4e3b\u306b\u3001\u300cINQUIRY\u300d\u3068\u3044\u3046\u4ef6\u540d\u3067\u3001abcovid[.]tech\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u9001\u3089\u308c\u305f\u3001\u4fa1\u683c\u306e\u898b\u7a4d\u306b\u898b\u305b\u304b\u3051\u308b\u5185\u5bb9\u306e\u30e1\u30fc\u30eb\u3068\u3057\u3066\u914d\u5e03\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u306e\u30e1\u30fc\u30eb\u306e\u30bf\u30fc\u30b2\u30c3\u30c8\u306f\u3001\u88fd\u9020\u696d\u3001\u5c0f\u58f2\u696d\u3001\u9023\u90a6\u653f\u5e9c\u3001\u5dde\u653f\u5e9c\u3001\u5730\u65b9\u653f\u5e9c\u3001\u91d1\u878d\u3001\u88fd\u85ac\u3001\u8f38\u9001\u3001\u6559\u80b2\u306a\u3069\u3001\u7c73\u56fd\u3001\u6b27\u5dde\u3001\u6771\u5357\u30a2\u30b8\u30a2\u306e\u3055\u307e\u3056\u307e\u306a\u30bb\u30af\u30bf\u306b\u307e\u305f\u304c\u308b\u7d44\u7e54\u3067\u3057\u305f\u3002\u3055\u3089\u306b\u3001\u60aa\u610f\u306e\u3042\u308bXLL\u30d5\u30a1\u30a4\u30eb\u306e\u4e2d\u306b\u306f\u3001<a href=\"https:\/\/excel-dna.net\/\">\u300cExcel-DNA\u300d<\/a>\u3068\u3044\u3046\u6b63\u5f53\u306a\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9Excel\u30a2\u30c9\u30a4\u30f3\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u60aa\u7528\u3057\u305f\u3082\u306e\u3082\u898b\u3089\u308c\u307e\u3057\u305f\u3002<\/p>\n<p>\u672c\u7a3f\u306f\u524d\u7de8\u30fb\u5f8c\u7de8\u306b\u5206\u3051\u3066\u304a\u9001\u308a\u3059\u308b\u30d6\u30ed\u30b0\u306e\u524d\u7de8\u3067\u3059\u3002\u524d\u7de8\u3067\u306f\u3001XLL\u30d5\u30a1\u30a4\u30eb\u306e\u5c5e\u6027\u3001\u60aa\u7528\u3055\u308c\u305f\u6b63\u5f53\u306a\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3001Agent Tesla\u306e\u6700\u7d42\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u6271\u3044\u3001\u5f8c\u7de8\u3067\u306f\u3082\u30461\u3064\u306e\u611f\u67d3\u30d5\u30ed\u30fc\u3067\u3042\u308bDridex\u30b5\u30f3\u30d7\u30eb\u3092\u914d\u5e03\u3059\u308bXLL\u3068Excel 4(XLM)\u306e\u30c9\u30ed\u30c3\u30d1\u3092\u6271\u3044\u307e\u3059\u3002<\/p>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306e\u304a\u5ba2\u69d8\u306f\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/cortex\/cortex-xdr\">Cortex XDR<\/a>\u307e\u305f\u306f<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/next-generation-firewall\">\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/a>\u7528\u306e<a href=\"https:\/\/www.paloaltonetworks.jp\/products\/secure-the-network\/wildfire\">WildFire<\/a>\u30af\u30e9\u30a6\u30c9\u914d\u4fe1\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u306b\u3088\u308a\u3001\u672c\u7a3f\u3067\u53d6\u308a\u4e0a\u3052\u305f\u653b\u6483\u304b\u3089\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<table style=\"width: 101.716%;\">\n<tbody>\n<tr>\n<td style=\"width: 52.4355%;\"><span style=\"font-weight: 400;\">\u672c\u7a3f\u3067\u53d6\u308a\u4e0a\u3052\u305f\u653b\u6483<\/span><\/td>\n<td style=\"width: 348.711%;\"><a href=\"https:\/\/unit42.paloaltonetworks.com\/category\/malware-2\/\"><span style=\"font-weight: 400;\">Malware<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/unit42.paloaltonetworks.com\/tag\/agenttesla\/\"><span style=\"font-weight: 400;\">Agent Tesla<\/span><\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 52.4355%;\"><span style=\"font-weight: 400;\">Unit 42\u306e\u95a2\u9023\u30c8\u30d4\u30c3\u30af<\/span><\/td>\n<td style=\"width: 348.711%;\"><a href=\"https:\/\/unit42.paloaltonetworks.com\/tag\/dridex\/\"><span style=\"font-weight: 400;\">Dridex<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/unit42.paloaltonetworks.com\/tag\/macros\/\"><span style=\"font-weight: 400;\">Macros<\/span><\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u76ee\u6b21<\/h2>\n<p><a href=\"#Chains-of-Infection\">\u611f\u67d3\u30c1\u30a7\u30fc\u30f3<\/a><br \/>\n<a href=\"#What-Is-XLL-Again?\">\u6539\u3081\u3066XLL\u3068\u306f?<\/a><br \/>\n<a href=\"#Malicious-Excel-Add-In-(XLL)-Dropper\">\u60aa\u610f\u306e\u3042\u308bExcel\u30a2\u30c9\u30a4\u30f3(XLL)\u306e\u30c9\u30ed\u30c3\u30d1<\/a><br \/>\n- <a href=\"#Excel-DNA\">Excel-DNA<\/a><br \/>\n-<a href=\"#Jack-Resource\">Jack\u306e\u30ea\u30bd\u30fc\u30b9<\/a><br \/>\n<a href=\"#Final-Payload-Agent-Tesla\">\u6700\u7d42\u30da\u30a4\u30ed\u30fc\u30c9 - Agent Tesla<\/a><br \/>\n-<a href=\"#String-Decryption\">\u6587\u5b57\u5217\u306e\u5fa9\u53f7<\/a><br \/>\n- <a href=\"#Windows-Vault\">Windows Vault<\/a><br \/>\n<a href=\"#Conclusion\">\u7d50\u8ad6<\/a><br \/>\n<a href=\"#Indicators-of-Compromise\">IoC<\/a><br \/>\n<a href=\"#Additional-Resources\">\u8ffd\u52a0\u30ea\u30bd\u30fc\u30b9<\/a><br \/>\n<a href=\"#Appendix-A-Deobfuscated-Code-of-the-Function-That-Reads-Windows-Vault\">\u4ed8\u9332A: Windows Vault\u3092\u8aad\u307f\u53d6\u308b\u95a2\u6570\u30b3\u30fc\u30c9\u3001\u96e3\u8aad\u5316\u89e3\u9664\u6e08\u307f<\/a><\/p>\n<h2><a id=\"Chains-of-Infection\"><\/a>\u611f\u67d3\u30c1\u30a7\u30fc\u30f3<\/h2>\n<p>\u56f31\u306e\u30d5\u30ed\u30fc\u30c1\u30e3\u30fc\u30c8\u306f\u3001\u4eca\u56de\u306e\u8abf\u67fb\u3067\u89b3\u6e2c\u3055\u308c\u305f\u3001\u3042\u308a\u3046\u308b2\u3064\u306e\u30a4\u30d9\u30f3\u30c8\u30c1\u30a7\u30fc\u30f3\u3092\u793a\u3057\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u88ab\u5bb3\u8005\u306f\u3001\u60aa\u610f\u306e\u3042\u308b\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u304c\u4ed8\u3044\u305f\u30e1\u30fc\u30eb\u3092\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002<\/li>\n<li>\u3053\u306e\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u306f\u60aa\u610f\u306e\u3042\u308bXLL\u30d5\u30a1\u30a4\u30eb\u304bXLM\u30d5\u30a1\u30a4\u30eb\u3067\u3059\u3002<\/li>\n<li>XLL\u306e\u5834\u5408\u3001\u5b9f\u884c\u3059\u308b\u3068\u6b21\u306e\u3044\u305a\u308c\u304b\u3092\u884c\u3044\u307e\u3059\u3002\n<ul>\n<li>\u4e2d\u9593\u30c9\u30ed\u30c3\u30d1\u3092\u30c9\u30ed\u30c3\u30d7\u3057\u3001\u305d\u306e\u4e2d\u9593\u30c9\u30ed\u30c3\u30d1\u304c\u3055\u3089\u306bAgent Tesla\u306e\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u30c9\u30ed\u30c3\u30d7\u3057\u307e\u3059\u3002<\/li>\n<li><a href=\"https:\/\/yoroi.company\/research\/office-documents-may-the-xll-technique-change-the-threat-landscape-in-2022\/\">Discord\u304b\u3089Agent Tesla\u306e\u30da\u30a4\u30ed\u30fc\u30c9<\/a>\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u307e\u3059\u3002<\/li>\n<li>Discord\u304b\u3089Dridex\u306e\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<li>XLM\u306e\u5834\u5408\u306f\u5b9f\u884c\u3059\u308b\u3068VBS\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u304c\u30c9\u30ed\u30c3\u30d7\u3055\u308c\u3001\u3053\u306eVBS\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u304cDiscord\u304b\u3089Dridex\u306e\u30b5\u30f3\u30d7\u30eb\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u5b9f\u884c\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u5fc5\u305a\u3057\u3082\u540c\u3058\u30a2\u30af\u30bf\u30fc\u306b\u3088\u3063\u3066\u914d\u5e03\u3055\u308c\u3066\u3044\u308b\u3068\u306f\u3044\u3048\u306a\u3044\u3082\u306e\u306e\u3001Agent Tesla\u3068Dridex\u306e\u611f\u67d3\u30c1\u30a7\u30fc\u30f3\u306f\u3001\u611f\u67d3\u30d9\u30af\u30bf\u30fc\u306e\u65b0\u305f\u306a\u30c8\u30ec\u30f3\u30c9\u3068\u306a\u308b\u3082\u306e\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_121741\" aria-describedby=\"caption-attachment-121741\" style=\"width: 746px\" class=\"wp-caption aligncenter center\"><a href=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/01\/word-image-jp-1.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-121741 size-full lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/01\/word-image-jp-1.png\" alt=\"\u3053\u306e\u30d5\u30ed\u30fc\u30c1\u30e3\u30fc\u30c8\u306f\u3001\u4eca\u56de\u306e\u8abf\u67fb\u3067\u89b3\u6e2c\u3055\u308c\u305f\u3001\u3042\u308a\u3046\u308b2\u3064\u306e\u30a4\u30d9\u30f3\u30c8\u30c1\u30a7\u30fc\u30f3\u3092\u793a\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u30d5\u30ed\u30fc1\u306f\u3001XLL\u30d5\u30a1\u30a4\u30eb\u3092\u30c9\u30ed\u30c3\u30d7\u3059\u308b\u30de\u30eb\u30b9\u30d1\u30e0\u306b\u95a2\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u305d\u3053\u304b\u3089Agent Tesla\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u30c9\u30ed\u30c3\u30d7\u3057\u305f\u308a\u3001Discord\u304b\u3089Agent Tesla\u3084Dridex\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305f\u308a\u3057\u307e\u3059\u3002\u30d5\u30ed\u30fc2\u306f\u3001XLM\u30d5\u30a1\u30a4\u30eb\u306b\u95a2\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u5b9f\u884c\u3059\u308b\u3068VBS\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u304c\u30c9\u30ed\u30c3\u30d7\u3055\u308c\u3001\u3053\u306eVBS\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u304cDiscord\u304b\u3089Dridex\u306e\u30b5\u30f3\u30d7\u30eb\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u5b9f\u884c\u3057\u307e\u3059\u3002 \" width=\"746\" height=\"741\" \/><\/a><figcaption id=\"caption-attachment-121741\" class=\"wp-caption-text\">\u56f31 \u611f\u67d3\u30c1\u30a7\u30fc\u30f3<\/figcaption><\/figure>\n<h2><a id=\"What-Is-XLL-Again?\"><\/a>\u6539\u3081\u3066XLL\u3068\u306f?<\/h2>\n<p>XLL\u306fExcel\u30a2\u30c9\u30a4\u30f3\u7528\u306e\u62e1\u5f35\u6a5f\u80fd\u3067\u3001\u305d\u306e\u5b9f\u4f53\u306f\u901a\u5e38\u306ePE(DLL\u30d5\u30a1\u30a4\u30eb)\u3067\u3059\u3002XLL\u30d5\u30a1\u30a4\u30eb\u306e\u62e1\u5f35\u5b50\u306b\u306fExcel\u3067\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\u307b\u304b\u306e\u62e1\u5f35\u5b50\u3068\u3088\u304f\u4f3c\u305f\u30a2\u30a4\u30b3\u30f3\u304c\u7d10\u3065\u3051\u3089\u308c\u3066\u3044\u308b\u3053\u3068\u304b\u3089\u3001\u4e00\u822c\u30e6\u30fc\u30b6\u30fc\u306fXLL\u3068\u307b\u304b\u306eExcel\u30d5\u30a1\u30a4\u30eb\u5f62\u5f0f\u3068\u306e\u9055\u3044\u306b\u6c17\u3065\u304b\u305a\u3001\u3046\u3063\u304b\u308a\u958b\u3044\u3066\u3057\u307e\u3044\u304b\u306d\u307e\u305b\u3093\u3002\u610f\u5916\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001XLL\u30d5\u30a1\u30a4\u30eb\u3092\u30c0\u30d6\u30eb\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u3001Excel\u306f\u3042\u3063\u3055\u308a\u3053\u308c\u3092\u8aad\u307f\u8fbc\u3093\u3067\u5b9f\u884c\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_121711\" aria-describedby=\"caption-attachment-121711\" style=\"width: 88px\" class=\"wp-caption aligncenter center\"><img  class=\"wp-image-121712 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/01\/word-image-68.png\" alt=\"\u30e6\u30fc\u30b6\u30fc\u306b\u8868\u793a\u3055\u308c\u308bXLL\u30a2\u30a4\u30b3\u30f3\" width=\"88\" height=\"94\" \/><figcaption id=\"caption-attachment-121711\" class=\"wp-caption-text\">\u56f32 XLL\u30a2\u30a4\u30b3\u30f3<\/figcaption><\/figure>\n<p>XLL\u304cExcel\u306b\u8aad\u307f\u8fbc\u307e\u308c\u308b\u3068\u3001\u5b9a\u7fa9\u3055\u308c\u305f<a href=\"https:\/\/docs.microsoft.com\/ja-jp\/office\/client-developer\/excel\/add-in-manager-and-xll-interface-functions\">XLL\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9<\/a>\u306b\u57fa\u3065\u3044\u3066\u3001XLL\u30d5\u30a1\u30a4\u30eb\u306e\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u6a5f\u80fd\u304c\u547c\u3073\u51fa\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u95a2\u6570\u306e\u306a\u304b\u3067\u76ee\u3092\u5f15\u304f\u306e\u304c<span style=\"font-family: 'courier new', courier, monospace;\">xlAutoOpen<\/span>\u3068<span style=\"font-family: 'courier new', courier, monospace;\">xlAutoClose<\/span>\u306e2\u3064\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u95a2\u6570\u306f\u305d\u308c\u305e\u308c\u30a2\u30c9\u30a4\u30f3\u304c\u30a2\u30af\u30c6\u30a3\u30d6\u306b\u306a\u3063\u305f\u308a\u975e\u30a2\u30af\u30c6\u30a3\u30d6\u306b\u306a\u3063\u305f\u308a\u3057\u305f\u3068\u304d\u306b\u547c\u3073\u51fa\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u95a2\u6570\u306f\u3001\u5f93\u6765\u306eVBA\u30de\u30af\u30ed\u306e<span style=\"font-family: 'courier new', courier, monospace;\">Auto_Open<\/span>\u30e1\u30bd\u30c3\u30c9\u3084<span style=\"font-family: 'courier new', courier, monospace;\">Auto_Close<\/span>\u30e1\u30bd\u30c3\u30c9\u306e\u3088\u3046\u306b\u3001\u60aa\u610f\u306e\u3042\u308b\u30b3\u30fc\u30c9\u306e\u30ed\u30fc\u30c9\u306b\u4f7f\u3048\u307e\u3059\u3002<\/p>\n<p>1\u3064XLL\u30d5\u30a1\u30a4\u30eb\u306e\u6b20\u70b9\u306f\u3001\u5bfe\u5fdc\u3059\u308b\u30d3\u30c3\u30c8\u6570\u306eExcel\u3067\u3057\u304b\u8aad\u307f\u8fbc\u3081\u306a\u3044\u3053\u3068\u3067\u3059\u3002\u305f\u3068\u3048\u307064\u30d3\u30c3\u30c8\u7528\u306eXLL\u306f64\u30d3\u30c3\u30c8\u7248\u306eExcel\u3067\u3057\u304b\u8aad\u307f\u8fbc\u3081\u307e\u305b\u3093\u300232\u30d3\u30c3\u30c8\u7248\u3082\u540c\u69d8\u3067\u3059\u3002\u3053\u306e\u305f\u3081\u30de\u30eb\u30a6\u30a7\u30a2\u4f5c\u6210\u8005\u306f\u88ab\u5bb3\u74b0\u5883\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3066\u3044\u308bExcel\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u304b\u3051\u308b\u3057\u304b\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>VBA\u30de\u30af\u30ed\u3068\u540c\u69d8\u3001Excel\u306f\u30a2\u30c9\u30a4\u30f3\u5b9f\u884c\u306b\u3088\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u554f\u984c\u3092\u30e6\u30fc\u30b6\u30fc\u306b\u8b66\u544a\u3057\u307e\u3059\u306e\u3067\u3001\u3053\u306e\u9762\u3067\u306f\u3001VBA\u306e\u30de\u30af\u30ed\u3068\u6bd4\u3079\u305f\u30de\u30eb\u30a6\u30a7\u30a2\u5074\u306e\u30e1\u30ea\u30c3\u30c8\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p><figure id=\"attachment_121713\" aria-describedby=\"caption-attachment-121713\" style=\"width: 430px\" class=\"wp-caption aligncenter center\"><img  class=\"wp-image-121714 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/01\/word-image-69.png\" alt=\"\u3053\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u306fXLL\u30d5\u30a1\u30a4\u30eb\u3092\u5b9f\u884c\u3057\u3088\u3046\u3068\u3057\u305f\u3068\u304d\u306eExcel\u306e\u8b66\u544a\u306e\u4f8b\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u30a2\u30e9\u30fc\u30c8\u306b\u306f\u300cMicrosoft Office has identified a potential security concern. Warning: There is no digital signature available\u300d\u3068\u7d9a\u304d\u3001[Enable this add-in for this session only]\u3068[Leave this add-in disabled]\u306e2\u3064\u306e\u30dc\u30bf\u30f3\u304c\u8868\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \" width=\"430\" height=\"244\" \/><figcaption id=\"caption-attachment-121713\" class=\"wp-caption-text\">\u56f33 XLL\u30d5\u30a1\u30a4\u30eb\u3092\u5b9f\u884c\u3057\u3088\u3046\u3068\u3057\u305f\u3055\u3044Excel\u306b\u8868\u793a\u3055\u308c\u308b\u8b66\u544a<\/figcaption><\/figure>\u524d\u8ff0\u306e\u7406\u7531\u306b\u3088\u308a\u3001XLL\u30d5\u30a1\u30a4\u30eb\u306f\u88ab\u5bb3\u30de\u30b7\u30f3\u306b\u6700\u521d\u306e\u8db3\u5834\u3092\u5f97\u3088\u3046\u3068\u3059\u308b\u653b\u6483\u8005\u306b\u3068\u3063\u3066\u306f\u826f\u3044\u9078\u629e\u3068\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002DLL\u306b\u30d1\u30c3\u30b1\u30fc\u30b8\u5316\u3057\u305f\u30b3\u30fc\u30c9\u3092Excel\u306b\u8aad\u307f\u8fbc\u307e\u305b\u3089\u308c\u308c\u3070\u3001\u3053\u3046\u3057\u305f\u30b7\u30ca\u30ea\u30aa\u3078\u306e\u5bfe\u5fdc\u6e96\u5099\u304c\u3067\u304d\u3066\u3044\u306a\u3044\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u88fd\u54c1\u3092\u8aa4\u8a8d\u3055\u305b\u3089\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u56f34\u306f\u3001PE\u30a8\u30c7\u30a3\u30bf\u306b\u3088\u308bXLL\u30d5\u30a1\u30a4\u30eb\u306e\u8868\u793a\u4f8b\u3067\u3059\u3002\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3055\u308c\u305f\u95a2\u6570\u306e\u4e2d\u306b<span style=\"font-family: 'courier new', courier, monospace;\">xlAutoOpen<\/span>\u95a2\u6570\u3068<span style=\"font-family: 'courier new', courier, monospace;\">xlAutoClose<\/span>\u95a2\u6570\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_121715\" aria-describedby=\"caption-attachment-121715\" style=\"width: 853px\" class=\"wp-caption aligncenter center\"><img  class=\"wp-image-121716 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/01\/word-image-70.png\" alt=\"\u3053\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u306fPE\u30a8\u30c7\u30a3\u30bf\u306b\u3088\u308bXLL\u30d5\u30a1\u30a4\u30eb\u306e\u8868\u793a\u4f8b\u3067\u3059\u3002\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3055\u308c\u305f\u95a2\u6570\u306e\u4e2d\u306bxlAutoOpen\u95a2\u6570\u3068xlAutoClose\u95a2\u6570\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002 \" width=\"853\" height=\"739\" \/><figcaption id=\"caption-attachment-121715\" class=\"wp-caption-text\">\u56f34 PE\u30d8\u30c3\u30c0\u7528\u30a8\u30c7\u30a3\u30bf\u306eCFF Explorer\u3067\u8868\u793a\u3057\u305fExcel\u30a2\u30c9\u30a4\u30f3\u306e\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u5185\u5bb9<\/figcaption><\/figure>\n<h2><a id=\"Malicious-Excel-Add-In-(XLL)-Dropper\"><\/a>\u60aa\u610f\u306e\u3042\u308bExcel\u30a2\u30c9\u30a4\u30f3(XLL)\u306e\u30c9\u30ed\u30c3\u30d1<\/h2>\n<p>\u4ee5\u4e0b\u306eXLL\u30b5\u30f3\u30d7\u30eb\u304c\u6dfb\u4ed8\u3055\u308c\u305f\u60aa\u610f\u306e\u3042\u308b\u30e1\u30fc\u30eb\u304c\u78ba\u8a8d\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>SHA256: <span style=\"font-family: 'courier new', courier, monospace;\">7a6f8590d4be989faccb34cd393e713fd80fa17e92d7613f33061d647d0e6d12<br \/>\n<\/span>SHA256: <span style=\"font-family: 'courier new', courier, monospace;\">fbc94ba5952a58e9dfa6b74fc59c21d830ed4e021d47559040926b8b96a937d0<\/span><\/p>\n<h3><a id=\"Excel-DNA\"><\/a>Excel-DNA<\/h3>\n<p>\u4eca\u56de\u306eXLL\u30b5\u30f3\u30d7\u30eb\u306f\u3001<a href=\"https:\/\/excel-dna.net\/\">Excel-DNA<\/a>\u3068\u547c\u3070\u308c\u308b\u6b63\u5f53\u306a\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9Excel\u30a2\u30c9\u30a4\u30f3\u958b\u767a\u7528\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u306f\u30de\u30eb\u30a6\u30a7\u30a2\u306e\u4f5c\u8005\u306b\u3082\u9069\u3057\u305f\u6a5f\u80fd\u304c\u3042\u308a\u307e\u3059\u30021\u3064\u306f\u3001PE\u30ea\u30bd\u30fc\u30b9\u5185\u306b\u30d1\u30c3\u30b1\u30fc\u30b8\u5316\u3057\u305f\u5727\u7e2e.NET\u30a2\u30bb\u30f3\u30d6\u30ea\u3092\u30c7\u30a3\u30b9\u30af\u306b\u300c\u89e6\u308c\u308b\u300d\u3053\u3068\u306a\u304f\u76f4\u63a5\u30e1\u30e2\u30ea\u306b\u30ed\u30fc\u30c9\u3059\u308b\u6a5f\u80fd\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u307e\u3063\u3068\u3046\u306a\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u306f\u3042\u308b\u306e\u306e\u3001Excel-DNA\u306f\u60aa\u610f\u306e\u3042\u308b\u30ed\u30fc\u30c0\u30fc\u306b\u4f3c\u305f\u6a5f\u80fd\u3092\u6301\u3063\u3066\u304a\u308a\u3001\u30ed\u30fc\u30c0\u30fc\u3068\u3057\u3066\u60aa\u7528\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u307e\u305fExcel-DNA\u306b\u306fYara\u306b\u3088\u308b\u5bfe\u7b56\u306e\u969c\u5bb3\u306b\u306a\u308a\u304b\u306d\u306a\u3044\u5225\u306e\u7279\u6027\u304c\u3042\u308a\u3001\u3053\u308c\u306f\u30de\u30eb\u30a6\u30a7\u30a2\u306e\u4f5c\u8005\u3067\u3082\u77e5\u3089\u306a\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002Excel-DNA\u30b5\u30f3\u30d7\u30eb\u306e\u306a\u304b\u306b\u306f\u3001\u306a\u305c\u304b\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3055\u308c\u308b\u95a2\u6570\u306e\u6570\u304c1\u4e07\u3092\u3059\u3053\u3057\u8d85\u3048\u308b\u3082\u306e\u304c\u591a\u6570\u3042\u308a\u3001\u305d\u308c\u3089\u306e\u95a2\u6570\u306e\u307b\u3068\u3093\u3069\u306f\u3001\u610f\u5473\u306e\u3042\u308b\u6a5f\u80fd\u3092\u6301\u3063\u3066\u3044\u307e\u305b\u3093\u3002\u305d\u3057\u3066\u3001Yara\u306ePE\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u95a2\u6570\u89e3\u6790\u306e\u4e0a\u9650\u306f\u305f\u3063\u305f<a href=\"https:\/\/github.com\/VirusTotal\/yara\/blob\/master\/libyara\/modules\/pe\/pe.c#L98\">8,192\u500b<\/a>\u3067\u3059\u3002\u3053\u306e\u305f\u3081\u3001Yara\u30eb\u30fc\u30eb\u306e\u5bfe\u8c61\u306e\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u540d\u304c\u30018192\u3088\u308a\u9ad8\u3044\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306b\u3042\u308b\u5834\u5408\u3001\u30b5\u30f3\u30d7\u30eb\u306b\u306f\u30de\u30c3\u30c1\u3057\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>Excel-DNA XLL\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u898b\u3066\u307f\u308b\u3068\u3001<span style=\"font-family: 'courier new', courier, monospace;\">__MAIN__<\/span>\u3068\u3044\u3046\u540d\u524d\u306eXML\u30ea\u30bd\u30fc\u30b9\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30ea\u30bd\u30fc\u30b9\u306b\u306f\u3001Excel-DNA\u3067\u8aad\u307f\u8fbc\u307e\u308c\u308b\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u95a2\u3059\u308b\u60c5\u5831\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u79c1\u305f\u3061\u306e\u30b1\u30fc\u30b9\u3067\u306f\u3001\u3053\u306e\u6307\u5b9a\u30e2\u30b8\u30e5\u30fc\u30eb\u304c<span style=\"font-family: 'courier new', courier, monospace;\">JACK<\/span>\u3068\u3044\u3046\u540d\u524d\u306e\u30ea\u30bd\u30fc\u30b9\u304b\u3089\u5c55\u958b\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>\u3053\u306e\u30ea\u30bd\u30fc\u30b9\u306f\u3001LZMA\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u5c55\u958b\u3055\u308c\u3001\u305d\u306e\u5f8c\u3001\u30e1\u30e2\u30ea\u306b\u30ed\u30fc\u30c9\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_121717\" aria-describedby=\"caption-attachment-121717\" style=\"width: 520px\" class=\"wp-caption aligncenter center\"><img  class=\"wp-image-121718 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/01\/word-image-71.png\" alt=\"Excel-DNA XLL\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u898b\u3066\u307f\u308b\u3068\u3001__MAIN__\u3068\u3044\u3046\u540d\u524d\u306eXML\u30ea\u30bd\u30fc\u30b9\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30ea\u30bd\u30fc\u30b9\u306b\u306f\u3001Excel-DNA\u3067\u8aad\u307f\u8fbc\u307e\u308c\u308b\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u95a2\u3059\u308b\u60c5\u5831\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u79c1\u305f\u3061\u306e\u30b1\u30fc\u30b9\u3067\u306f\u3001\u3053\u306e\u6307\u5b9a\u30e2\u30b8\u30e5\u30fc\u30eb\u304cJACK\u3068\u3044\u3046\u540d\u524d\u306e\u30ea\u30bd\u30fc\u30b9\u304b\u3089\u5c55\u958b\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002\" width=\"520\" height=\"427\" \/><figcaption id=\"caption-attachment-121717\" class=\"wp-caption-text\">\u56f35 Excel-DNA\u306e\u30ea\u30bd\u30fc\u30b9<\/figcaption><\/figure>\n<p>\u79c1\u305f\u3061\u306f\u3001Excel-DNA\u30a2\u30c9\u30a4\u30f3\u304b\u3089\u3053\u306e\u3088\u3046\u306a\u30a2\u30bb\u30f3\u30d6\u30ea\u3092\u62bd\u51fa\u3059\u308b\u305f\u3081\u306ePython\u30b3\u30fc\u30c9\u3092\u4f5c\u6210\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u306f<a href=\"https:\/\/github.com\/pan-unit42\/iocs\/tree\/master\/agent_tesla\"> Unit 42\u306eGitHub \u30ea\u30dd\u30b8\u30c8\u30ea<\/a>\u304b\u3089\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3><a id=\"Jack-Resource\"><\/a><span style=\"font-family: georgia, palatino, serif;\">JACK<\/span>\u30ea\u30bd\u30fc\u30b9<\/h3>\n<p>\u8aad\u307f\u8fbc\u307e\u308c\u305f\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u30b7\u30f3\u30d7\u30eb\u306a\u30c9\u30ed\u30c3\u30d1\u3067\u3059\u3002\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u30ed\u30fc\u30c9\u3059\u308b\u3068<span style=\"font-family: 'courier new', courier, monospace;\">AutoOpen<\/span>\u30e1\u30bd\u30c3\u30c9\u304c\u547c\u3073\u51fa\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u65b9\u6cd5\u3067\u306e\u60aa\u610f\u306e\u3042\u308b\u30b3\u30fc\u30c9\u306f\u3001\u6700\u7d42\u7684\u306a\u30da\u30a4\u30ed\u30fc\u30c9\u306e\u5b9f\u884c\u30d5\u30a1\u30a4\u30eb\u3092<span style=\"font-family: 'courier new', courier, monospace;\">%AppData%\\service.exe<\/span>\u306b\u30c9\u30ed\u30c3\u30d7\u3057\u3066\u5b9f\u884c\u3057\u307e\u3059(\u56f36\u53c2\u7167)\u3002<span style=\"font-family: 'courier new', courier, monospace;\">JACK<\/span>\u306b\u542b\u307e\u308c\u308b\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u8a2d\u5b9a\u5909\u66f4\u304c\u53ef\u80fd\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u307b\u304b\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u306f\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u30c9\u30ed\u30c3\u30d7\u3059\u308b\u4ee3\u308f\u308a\u306b\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305f\u308a\u3001\u672c\u7269\u306eExcel\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u30c9\u30ed\u30c3\u30d7\u3057\u3066\u5b9f\u884c\u3057\u305f\u308a\u3067\u304d\u308b\u3001\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u8a2d\u5b9a\u5185\u5bb9\u3092\u56f37\u306b\u793a\u3057\u307e\u3059\u3002\u8a2d\u5b9a\u306b\u306f\u4ee5\u4e0b\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">bDown<\/span>- \u30da\u30a4\u30ed\u30fc\u30c9\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u307e\u3059\u3002<\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">templateEnabled<\/span>- Excel\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u30c9\u30ed\u30c3\u30d7\u3057\u3066\u958b\u304d\u307e\u3059\u3002<\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">payload<\/span>- \u30c9\u30ed\u30c3\u30d7\u3055\u308c\u308b\u30da\u30a4\u30ed\u30fc\u30c9\u304c\u683c\u7d0d\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<figure id=\"attachment_121719\" aria-describedby=\"caption-attachment-121719\" style=\"width: 652px\" class=\"wp-caption aligncenter center\"><img  class=\"wp-image-121720 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/01\/word-image-72.png\" alt=\"\u8aad\u307f\u8fbc\u307e\u308c\u305f\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u30b7\u30f3\u30d7\u30eb\u306a\u30c9\u30ed\u30c3\u30d1\u3067\u3059\u3002\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u30ed\u30fc\u30c9\u3059\u308b\u3068AutoOpen\u30e1\u30bd\u30c3\u30c9\u304c\u547c\u3073\u51fa\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u65b9\u6cd5\u3067\u306e\u60aa\u610f\u306e\u3042\u308b\u30b3\u30fc\u30c9\u306f\u3001\u6700\u7d42\u7684\u306a\u30da\u30a4\u30ed\u30fc\u30c9\u306e\u5b9f\u884c\u30d5\u30a1\u30a4\u30eb\u3092%AppData%\\service.exe\u306b\u30c9\u30ed\u30c3\u30d7\u3057\u3066\u5b9f\u884c\u3057\u307e\u3059\u3002\" width=\"652\" height=\"374\" \/><figcaption id=\"caption-attachment-121719\" class=\"wp-caption-text\">\u56f36 AutoOpen\u30e1\u30bd\u30c3\u30c9\u3092\u542b\u3080JACK\u30c9\u30ed\u30c3\u30d1\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u30b3\u30fc\u30c9\u3092dnSpy\u3067\u9006\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u305f\u3082\u306e<\/figcaption><\/figure>\n<figure id=\"attachment_121721\" aria-describedby=\"caption-attachment-121721\" style=\"width: 329px\" class=\"wp-caption aligncenter center\"><img  class=\"wp-image-121722 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/01\/word-image-73.png\" alt=\"bDown - \u30da\u30a4\u30ed\u30fc\u30c9\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b\u3001templateEnabled - Excel\u306e\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u30c9\u30ed\u30c3\u30d7\u3057\u3066\u958b\u304f\u3001payload - \u30c9\u30ed\u30c3\u30d7\u3059\u308b\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u683c\u7d0d\u3059\u308b\u3001\u3068\u3044\u3046\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u542b\u3080\u8a2d\u5b9a\u304c\u8868\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\" width=\"329\" height=\"330\" \/><figcaption id=\"caption-attachment-121721\" class=\"wp-caption-text\">\u56f37 \u30c9\u30ed\u30c3\u30d1\u306e\u8a2d\u5b9a\u7528\u5909\u6570\u3068\u30d0\u30a4\u30c8\u914d\u5217\u306b\u542b\u307e\u308c\u308b\u6700\u7d42\u30da\u30a4\u30ed\u30fc\u30c9<\/figcaption><\/figure>\n<h2><a id=\"Final-Payload-Agent-Tesla\"><\/a>\u6700\u7d42\u30da\u30a4\u30ed\u30fc\u30c9 - Agent Tesla<\/h2>\n<p>SHA256: <span style=\"font-family: 'courier new', courier, monospace;\">AB5444F001B8F9E06EBF12BC8FDC200EE5F4185EE52666D69F7D996317EA38F3<\/span><\/p>\n<p>\u6700\u7d42\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u96e3\u8aad\u5316\u3055\u308c\u305fAgent Tesla\u30b5\u30f3\u30d7\u30eb\u3067\u3001\u305d\u306e\u6a5f\u80fd\u306b\u3064\u3044\u3066\u306f\u3055\u307e\u3056\u307e\u306a\u6587\u66f8\u3067\u3059\u3067\u306b\u307e\u3068\u3081\u3089\u308c\u3066\u3044\u307e\u3059(<a href=\"https:\/\/www.fortinet.com\/blog\/threat-research\/new-agent-tesla-variant-spreading-by-phishing\">[1]<\/a><a href=\"https:\/\/news.sophos.com\/en-us\/2021\/02\/02\/agent-tesla-amps-up-information-stealing-attacks\/\">[2]<\/a>)\u3002\u79c1\u305f\u3061\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001SMTP\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u4f7f\u3063\u3066<span style=\"font-family: 'courier new', courier, monospace;\">phantom1248@yandex[.]com<\/span>\u3068\u3044\u3046\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u5b9b\u306b\u7a83\u53d6\u3057\u305f\u30c7\u30fc\u30bf\u3092\u6f0f\u51fa\u3055\u305b\u3066\u3044\u307e\u3059\u3002\u56f38\u306f\u3001\u9006\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u305f\u3053\u306eAgent Tesla\u30b5\u30f3\u30d7\u30eb\u306e\u30a8\u30f3\u30c8\u30ea\u30dd\u30a4\u30f3\u30c8\u3067\u3001\u305d\u306e\u69cb\u9020\u306f\u307b\u304b\u306eAgent Tesla\u306e\u30b5\u30f3\u30d7\u30eb\u3068\u4f3c\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_121723\" aria-describedby=\"caption-attachment-121723\" style=\"width: 874px\" class=\"wp-caption aligncenter center\"><img  class=\"wp-image-121724 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/01\/word-image-74.png\" alt=\"\u3053\u306e\u56f3\u306f\u9006\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u305f\u3053\u306eAgent Tesla\u30b5\u30f3\u30d7\u30eb\u306e\u30a8\u30f3\u30c8\u30ea\u30dd\u30a4\u30f3\u30c8\u3067\u3001\u69cb\u6210\u306f\u307b\u304b\u306eAgent Tesla\u306e\u30b5\u30f3\u30d7\u30eb\u3068\u4f3c\u3066\u3044\u307e\u3059\u3002\" width=\"874\" height=\"455\" \/><figcaption id=\"caption-attachment-121723\" class=\"wp-caption-text\">\u56f38 \u9006\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u305fAgent Tesla\u306e\u30a8\u30f3\u30c8\u30ea\u30dd\u30a4\u30f3\u30c8\u306e\u95a2\u6570<\/figcaption><\/figure>\n<h3><a id=\"String-Decryption\"><\/a>\u6587\u5b57\u5217\u306e\u5fa9\u53f7<\/h3>\n<p>\u3053\u306eAgent Tesla\u30b5\u30f3\u30d7\u30eb\u306f\u3001\u6587\u5b57\u5217\u3092\u3059\u3079\u3066\u3001\u3042\u308b\u300c(\u6587\u5b57\u3092\u683c\u7d0d\u3057\u305f)\u5927\u304d\u306a\u30d0\u30a4\u30c8\u914d\u5217\u300d\u306b\u6697\u53f7\u5316\u3057\u3066\u4fdd\u5b58\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u521d\u671f\u5316\u6642\u3001\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u306f\u300c\u5927\u304d\u306a\u30d0\u30a4\u30c8\u914d\u5217\u300d\u306e\u5404\u30d0\u30a4\u30c8\u3092\u3001\u30cf\u30fc\u30c9\u30b3\u30fc\u30c9\u3055\u308c\u305f\u30d0\u30a4\u30c8170\u3068\u300c\u5927\u304d\u306a\u30d0\u30a4\u30c8\u914d\u5217\u300d\u5185\u306e\u6587\u5b57\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9(\u30d0\u30a4\u30c8\u30b5\u30a4\u30ba\u306b\u30c8\u30ea\u30df\u30f3\u30b0\u3055\u308c\u305f\u3082\u306e)\u3068\u3067XOR\u3057\u307e\u3059\u3002\u6b21\u306b\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u306f\u3001\u5fa9\u53f7\u3057\u305f\u914d\u5217\u3092\u65e2\u77e5\u306e\u30aa\u30d5\u30bb\u30c3\u30c8\u3068\u5bfe\u5fdc\u3059\u308b\u9577\u3055\u306b\u30b9\u30d7\u30e9\u30a4\u30b7\u30f3\u30b0\u3057\u3001\u5168\u3066\u306e\u6587\u5b57\u5217\u3092\u683c\u7d0d\u3059\u308b\u914d\u5217\u3092\u57cb\u3081\u307e\u3059\u3002\u4f8b\u3068\u3057\u3066\u3001\u30aa\u30d5\u30bb\u30c3\u30c8665\u306e8\u30d0\u30a4\u30c8\u3092\u8abf\u3079\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<table style=\"width: 100.68%;\">\n<tbody>\n<tr>\n<td style=\"width: 58.6667%;\"><span style=\"font-weight: 400;\">\u5b9f\u884c\u524d(\u6697\u53f7\u5316\u3055\u308c\u305f\u72b6\u614b)<\/span><\/td>\n<td style=\"width: 174.167%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">28, 92, 94, 81, 25, 64, 88, 122<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 58.6667%;\"><span style=\"font-weight: 400;\">\u521d\u671f\u5316\u6642\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">(\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3068 <\/span><span style=\"font-weight: 400;\">170<\/span><span style=\"font-weight: 400;\">\u3068XOR\u3057\u305f\u5fa9\u53f7\u5f8c\u306e\u72b6\u614b)<\/span><\/td>\n<td style=\"width: 174.167%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">47, 108, 111, 103, 46, 116, 109, 112<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 58.6667%;\"><span style=\"font-weight: 400;\">\u5fa9\u53f7\u5f8c\u306eASCII\u5f62\u5f0f<\/span><\/td>\n<td style=\"width: 174.167%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">\/log.tmp<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3067\u306f\u3001\u6587\u5b57\u5217\u306e\u914d\u5217\u306e<strong>53<\/strong>\u756a\u76ee\u306e\u9805\u76ee\u306b\u3001\u5fa9\u53f7\u3055\u308c\u305f\u30d0\u30a4\u30c8\u914d\u5217\u306e\u30aa\u30d5\u30bb\u30c3\u30c8665\u306e8\u30d0\u30a4\u30c8\u3092\u30a2\u30b5\u30a4\u30f3\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_121725\" aria-describedby=\"caption-attachment-121725\" style=\"width: 900px\" class=\"wp-caption aligncenter center\"><img  class=\"wp-image-121726 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/01\/word-image-75.png\" alt=\"\u3053\u3053\u306b\u793a\u3059\u30b3\u30fc\u30c9\u306f\u6587\u5b57\u5217\u306e53\u756a\u76ee\u306e\u9805\u76ee\u3092\u30a2\u30b5\u30a4\u30f3\u3057\u3066\u3044\u307e\u3059\u3002\" width=\"900\" height=\"83\" \/><figcaption id=\"caption-attachment-121725\" class=\"wp-caption-text\">\u56f39 \u6587\u5b57\u5217\u3092\u30a2\u30b5\u30a4\u30f3\u3059\u308b\u30b3\u30fc\u30c9<\/figcaption><\/figure>\n<p>\u5fa9\u53f7\u3055\u308c\u305f\u6587\u5b57\u5217\u914d\u5217\u3092\u8abf\u3079\u308b\u3068\u3001Agent Tesla\u304c\u72d9\u3063\u3066\u3044\u308b\u3055\u307e\u3056\u307e\u306a\u30bf\u30fc\u30b2\u30c3\u30c8\u304c\u898b\u3048\u3066\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u6a5f\u5fae\u306a\u30d6\u30e9\u30a6\u30b6\u60c5\u5831\u3001cookie<\/li>\n<li>\u30e1\u30fc\u30eb\u3001FTP\u3001VPN\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u60c5\u5831<\/li>\n<li>Windows Vault\u304b\u3089\u306e\u30af\u30ec\u30c7\u30f3\u30b7\u30e3\u30eb(\u8a8d\u8a3c\u60c5\u5831)<\/li>\n<li>\u8a18\u9332\u3055\u308c\u305f\u30ad\u30fc\u30b9\u30c8\u30ed\u30fc\u30af\u3084\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/li>\n<li>\u30af\u30ea\u30c3\u30d7\u30dc\u30fc\u30c9\u306e\u60c5\u5831<\/li>\n<\/ul>\n<h3><a id=\"Windows-Vault\"><\/a>Windows Vault<\/h3>\n<p>Windows Vault\u304b\u3089\u60c5\u5831\u3092\u76d7\u3080\u305f\u3081\u3001Agent Tesla\u306e\u4f5c\u8005\u306f<a href=\"https:\/\/github.com\/PowerShellMafia\/PowerSploit\/blob\/master\/Exfiltration\/Get-VaultCredential.ps1#L265\">PowerSploit\u306e\u30b9\u30af\u30ea\u30d7\u30c8<\/a>\u3092C#\u306b\u5909\u63db\u3057\u3066 .NET\u30a2\u30bb\u30f3\u30d6\u30ea\u3092\u30d3\u30eb\u30c9\u3057\u305f\u3088\u3046\u3067\u3059\u3002<\/p>\n<p>\u3053\u308c\u306f<a href=\"https:\/\/docs.microsoft.com\/ja-jp\/dotnet\/standard\/native-interop\/pinvoke\">P\/Invoke<\/a>\u3092\u4f7f\u3063\u3066<span style=\"font-family: 'courier new', courier, monospace;\">vaultcli.dll<\/span>\u30e9\u30a4\u30d6\u30e9\u30ea\u304b\u3089API\u95a2\u6570\u3092\u547c\u3073\u51fa\u3057\u307e\u3059\u3002\u6700\u521d\u306b<span style=\"font-family: 'courier new', courier, monospace;\">VaultEnumerateItems<\/span>\u304c\u547c\u3073\u51fa\u3055\u308c\u3001\u5229\u7528\u53ef\u80fd\u306a\u3059\u3079\u3066\u306eVault\u304c\u53d6\u5f97\u3055\u308c\u307e\u3059\u3002\u6b21\u306b\u3001<span style=\"font-family: 'courier new', courier, monospace;\">VaultOpenVault<\/span>\u3092\u4f7f\u3063\u3066\u5404Vault\u304c\u958b\u304b\u308c\u307e\u3059\u3002Vault\u304c\u958b\u304b\u308c\u308b\u3068\u3001<span style=\"font-family: 'courier new', courier, monospace;\">VaultEnumerateItems<\/span>\u306b\u3088\u308a\u3001\u4e2d\u306b\u3042\u308b\u30a2\u30a4\u30c6\u30e0\u304c\u5217\u6319\u3055\u308c\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001<span style=\"font-family: 'courier new', courier, monospace;\">VaultGetItem<\/span>\u3067\u30a2\u30a4\u30c6\u30e0\u306e\u5c5e\u6027\u304c\u8aad\u307f\u53d6\u3089\u308c\u307e\u3059\u3002Agent Tesla\u306f\u3001\u81ea\u8eab\u306e\u30ea\u30b9\u30c8\u306b\u30af\u30a8\u30ea\u3092\u30a2\u30a4\u30c6\u30e0\u3068\u3057\u3066\u8a18\u9332\u3057\u307e\u3059(\u624b\u52d5\u3067\u96e3\u8aad\u5316\u3092\u89e3\u9664\u3057\u305f\u30b3\u30fc\u30c9\u3092\u56f310\u306b\u793a\u3059)\u3002\u8208\u5473\u306e\u3042\u308b\u65b9\u306f\u3001\u4ed8\u9332A\u304b\u3089\u96e3\u8aad\u5316\u3092\u3059\u3079\u3066\u89e3\u9664\u3057\u305f\u30e1\u30bd\u30c3\u30c9\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<figure id=\"attachment_121727\" aria-describedby=\"caption-attachment-121727\" style=\"width: 818px\" class=\"wp-caption aligncenter center\"><img  class=\"wp-image-121728 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/01\/word-image-76.png\" alt=\"\u62bd\u51fa\u3055\u308c\u305fWindows Vault\u306e\u30a2\u30a4\u30c6\u30e0\u3092\u8a18\u9332\u3059\u308bAgent Tesla\u306e\u30b3\u30fc\u30c9(\u96e3\u8aad\u5316\u89e3\u9664\u6e08\u307f)\" width=\"818\" height=\"225\" \/><figcaption id=\"caption-attachment-121727\" class=\"wp-caption-text\">\u56f310. \u62bd\u51fa\u3055\u308c\u305fWindows Vault\u306e\u30a2\u30a4\u30c6\u30e0\u3092\u8a18\u9332\u3059\u308bAgent Tesla\u306e\u30b3\u30fc\u30c9(\u96e3\u8aad\u5316\u89e3\u9664\u6e08\u307f)<\/figcaption><\/figure>\n<p>\u4ee5\u4e0b\u306f\u3001Agent Tesla\u304c\u60c5\u5831\u7a83\u53d6\u306b\u4f7f\u7528\u3059\u308bWindows Vault\u306eGUID(\u3068\u305d\u308c\u305e\u308c\u306e\u8aac\u660e)\u306e\u30ea\u30b9\u30c8\u3067\u3059\u3002<\/p>\n<table style=\"width: 99.1485%;\">\n<tbody>\n<tr>\n<td style=\"width: 53.8217%;\"><strong>GUID<\/strong><\/td>\n<td style=\"width: 167.834%;\"><strong>\u8aac\u660e<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 53.8217%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">2F1A6504-0641-44CF-8BB5-3612D865F2E5<\/span><\/td>\n<td style=\"width: 167.834%;\"><span style=\"font-weight: 400;\">Windows Secure Note<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 53.8217%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">3CCD5499-87A8-4B10-A215-608888DD3B55<\/span><\/td>\n<td style=\"width: 167.834%;\"><span style=\"font-weight: 400;\">Windows Web Password Credential<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 53.8217%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">154E23D0-C644-4E6F-8CE6-5069272F999F<\/span><\/td>\n<td style=\"width: 167.834%;\"><span style=\"font-weight: 400;\">Windows Credential Picker Protector<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 53.8217%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">4BF4C442-9B8A-41A0-B380-DD4A704DDB28<\/span><\/td>\n<td style=\"width: 167.834%;\"><span style=\"font-weight: 400;\">Web Credentials<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 53.8217%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">77BC582B-F0A6-4E15-4E80-61736B6F3B29<\/span><\/td>\n<td style=\"width: 167.834%;\"><span style=\"font-weight: 400;\">Windows Credentials<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 53.8217%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">E69D7838-91B5-4FC9-89D5-230D4D4CC2BC<\/span><\/td>\n<td style=\"width: 167.834%;\"><span style=\"font-weight: 400;\">Windows Domain Certificate Credential<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 53.8217%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">3E0E35BE-1B77-43E7-B873-AED901B6275B<\/span><\/td>\n<td style=\"width: 167.834%;\"><span style=\"font-weight: 400;\">Windows Domain Password Credential<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 53.8217%;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">3C886FF3-2669-4AA2-A8FB-3F6759A77548<\/span><\/td>\n<td style=\"width: 167.834%;\"><span style=\"font-weight: 400;\">Windows Extended Credential<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><a id=\"Conclusion\"><\/a>\u7d50\u8ad6<\/h2>\n<p>\u6700\u8fd1\u89b3\u6e2c\u3055\u308c\u305f\u30de\u30eb\u30a6\u30a7\u30a2\u306e\u6025\u5897\u3092\u53d7\u3051\u3001Excel\u30a2\u30c9\u30a4\u30f3(XLL)\u3092\u5229\u7528\u3059\u308b\u611f\u67d3\u30c1\u30a7\u30fc\u30f3\u3092\u5206\u6790\u3057\u307e\u3057\u305f\u3002\u307e\u305f\u30de\u30eb\u30a6\u30a7\u30a2\u4f5c\u8005\u304c\u3001\u6b63\u5f53\u306aExcel-DNA\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u60aa\u7528\u3057\u3001\u3053\u3046\u3057\u305f\u60aa\u610f\u306e\u3042\u308bXLL\u3092\u4f5c\u6210\u3059\u308b\u624b\u53e3\u306b\u3064\u3044\u3066\u3082\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002\u6700\u5f8c\u306b\u3001\u6700\u7d42\u7684\u306aAgent Tesla\u30da\u30a4\u30ed\u30fc\u30c9\u3068\u3001\u88ab\u5bb3\u30b7\u30b9\u30c6\u30e0\u304b\u3089\u306e\u7a83\u53d6\u304c\u8a66\u307f\u3089\u308c\u308b\u60c5\u5831\u306e\u7a2e\u985e\u306b\u3064\u3044\u3066\u3001Windows Vault\u30c7\u30fc\u30bf\u3092\u4e2d\u5fc3\u306b\u7c21\u5358\u306b\u8aac\u660e\u3057\u307e\u3057\u305f\u3002\u6700\u8fd1\u306e\u653b\u6483\u3067\u898b\u3089\u308c\u308bExcel\u30a2\u30c9\u30a4\u30f3\u306e\u5229\u7528\u306f\u8105\u5a01\u72b6\u6cc1\u306e\u65b0\u305f\u306a\u30c8\u30ec\u30f3\u30c9\u3092\u793a\u3057\u3066\u3044\u308b\u306e\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<p>\u5f8c\u7de8\u3067\u306fExcel4.0\u306e\u30de\u30af\u30ed\u3092\u4f7f\u3063\u3066Dridex\u3092\u914d\u4fe1\u3059\u308b\u3001\u3082\u30461\u3064\u306e\u611f\u67d3\u30c1\u30a7\u30fc\u30f3\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306e\u304a\u5ba2\u69d8\u306f\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/cortex\/cortex-xdr\">Cortex XDR<\/a>\u307e\u305f\u306f<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/next-generation-firewall\">\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/a>\u7528\u306e<a href=\"https:\/\/www.paloaltonetworks.jp\/products\/secure-the-network\/wildfire\">WildFire<\/a>\u30af\u30e9\u30a6\u30c9\u914d\u4fe1\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u306b\u3088\u308a\u3001\u672c\u7a3f\u3067\u53d6\u308a\u4e0a\u3052\u305f\u653b\u6483\u304b\u3089\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4fb5\u5bb3\u306e\u61f8\u5ff5\u304c\u3042\u308a\u5f0a\u793e\u306b\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u30ec\u30b9\u30dd\u30f3\u30b9\u306b\u95a2\u3059\u308b\u3054\u76f8\u8ac7\u3092\u306a\u3055\u308a\u305f\u3044\u5834\u5408\u306f\u3001<a href=\"mailto:infojapan@paloaltonetworks.com\">infojapan@paloaltonetworks.com<\/a> \u307e\u3067\u96fb\u5b50\u30e1\u30fc\u30eb\u306b\u3066\u3054\u9023\u7d61\u304f\u3060\u3055\u3044(\u3054\u76f8\u8ac7\u306f\u5f0a\u793e\u88fd\u54c1\u306e\u304a\u5ba2\u69d8\u306b\u306f\u9650\u5b9a\u3055\u308c\u307e\u305b\u3093)\u3002<\/p>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306f\u30d5\u30a1\u30a4\u30eb\u30b5\u30f3\u30d7\u30eb\u3084\u4fb5\u5bb3\u306e\u5146\u5019\u306a\u3069\u3092\u3075\u304f\u3080\u3053\u308c\u3089\u306e\u8abf\u67fb\u7d50\u679c\u3092Cyber Threat Alliance (CTA \u30b5\u30a4\u30d0\u30fc\u8105\u5a01\u30a2\u30e9\u30a4\u30a2\u30f3\u30b9) \u306e\u30e1\u30f3\u30d0\u30fc\u3068\u5171\u6709\u3057\u307e\u3057\u305f\u3002CTA \u306e\u30e1\u30f3\u30d0\u30fc\u306f\u3053\u306e\u30a4\u30f3\u30c6\u30ea\u30b8\u30a7\u30f3\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3001\u304a\u5ba2\u69d8\u306b\u4fdd\u8b77\u3092\u8fc5\u901f\u306b\u63d0\u4f9b\u3057\u3001\u60aa\u610f\u306e\u3042\u308b\u30b5\u30a4\u30d0\u30fc\u653b\u6483\u8005\u3092\u4f53\u7cfb\u7684\u306b\u963b\u5bb3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f<a href=\"https:\/\/www.cyberthreatalliance.org\"><span style=\"font-weight: 400;\">Cyber Threat Alliance<\/span><\/a>\u306b\u3066\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\uff61<\/p>\n<h3><a id=\"Indicators-of-Compromise\"><\/a>IoC<\/h3>\n<table style=\"width: 101.004%; height: 280px;\">\n<tbody>\n<tr style=\"height: 56px;\">\n<td style=\"width: 74.0291%; height: 56px;\"><strong>\u30b5\u30f3\u30d7\u30eb\u306e\u30cf\u30c3\u30b7\u30e5\u5024(SHA256)<\/strong><\/td>\n<td style=\"width: 95.8738%; height: 56px;\"><span style=\"font-weight: 400;\"><strong>\u8aac\u660e<\/strong>\u00a0<\/span><\/td>\n<\/tr>\n<tr style=\"height: 56px;\">\n<td style=\"width: 74.0291%; height: 56px;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">7a6f8590d4be989faccb34cd393e713fd80fa17e92d7613f33061d647d0e6d12<\/span><\/td>\n<td style=\"width: 95.8738%; height: 56px;\"><span style=\"font-weight: 400;\">XLL\u30c9\u30ed\u30c3\u30d1<\/span><\/td>\n<\/tr>\n<tr style=\"height: 56px;\">\n<td style=\"width: 74.0291%; height: 56px;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">fbc94ba5952a58e9dfa6b74fc59c21d830ed4e021d47559040926b8b96a937d0<\/span><\/td>\n<td style=\"width: 95.8738%; height: 56px;\"><span style=\"font-weight: 400;\">XLL\u30c9\u30ed\u30c3\u30d1<\/span><\/td>\n<\/tr>\n<tr style=\"height: 56px;\">\n<td style=\"width: 74.0291%; height: 56px;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">bfc32aab4f7ec31e03a723e0efd839afc2f861cc615a889561b38430c396dcfe<\/span><\/td>\n<td style=\"width: 95.8738%; height: 56px;\"><span style=\"font-weight: 400;\">\u4e2d\u9593\u30c9\u30ed\u30c3\u30d1(JACK)<\/span><\/td>\n<\/tr>\n<tr style=\"height: 56px;\">\n<td style=\"width: 74.0291%; height: 56px;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">AB5444F001B8F9E06EBF12BC8FDC200EE5F4185EE52666D69F7D996317EA38F3<\/span><\/td>\n<td style=\"width: 95.8738%; height: 56px;\"><span style=\"font-weight: 400;\">\u6700\u7d42\u7684\u306aAgent Tesla\u30da\u30a4\u30ed\u30fc\u30c9<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><a id=\"Additional-Resources\"><\/a>\u8ffd\u52a0\u30ea\u30bd\u30fc\u30b9<\/h3>\n<ul>\n<li><a href=\"https:\/\/blogs.blackberry.com\/en\/2021\/06\/threat-thursday-agent-tesla-infostealer-malware\">Agent Tesla Infostealer<\/a> - ThreatVector Blog, BlackBerry<\/li>\n<li><a href=\"https:\/\/news.sophos.com\/en-us\/2021\/02\/02\/agent-tesla-amps-up-information-stealing-attacks\/\">Agent Tesla amps up information stealing attacks<\/a> - Sophos<\/li>\n<\/ul>\n<h3><a id=\"Appendix-A-Deobfuscated-Code-of-the-Function-That-Reads-Windows-Vault\"><\/a>\u4ed8\u9332A: Windows Vault\u3092\u8aad\u307f\u53d6\u308b\u95a2\u6570\u30b3\u30fc\u30c9\u3001\u96e3\u8aad\u5316\u89e3\u9664\u6e08\u307f<\/h3>\n<p>\u8a73\u3057\u3044\u60c5\u5831\u306f<a href=\"https:\/\/github.com\/pan-unit42\/iocs\/tree\/master\/agent_tesla\">GitHub<\/a>\u3067\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981 2021\u5e747\u670827\u65e5\u304b\u308912\u67081\u65e5\u306b\u304b\u3051\u3001Unit 42\u306e\u30ea\u30b5\u30fc\u30c1\u30e3\u30fc\u306fExcel\u306e\u30a2\u30c9\u30a4\u30f3(XLL)\u3084Office 4.0\u306e\u30de\u30af\u30ed\u304c\u30c9\u30ed\u30c3\u30d7\u3057\u305fAgent Tesla\u3084Dridex\u30de\u30eb\u30a6\u30a7\u30a2\u30b5\u30f3\u30d7\u30eb\u306e\u65b0\u305f\u306a\u6025\u5897\u3092<\/p>\n","protected":false},"author":55,"featured_media":134322,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[4321,1974,4428],"tags":[5269,4649,5691,5692],"product_categories":[4444,4343,4448,4456],"coauthors":[649],"class_list":["post-121736","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-threat-research","category-malware-ja","category-threat-research-ja","tag-agenttesla-ja","tag-dridex-ja","tag-macros-ja","tag-microsoft-excel","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) - 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