{"id":99632,"date":"2019-01-23T06:00:01","date_gmt":"2019-01-23T14:00:01","guid":{"rendered":"https:\/\/unit42.paloaltonetworks.com\/?p=99632"},"modified":"2019-10-04T02:14:05","modified_gmt":"2019-10-04T09:14:05","slug":"tracking-oceanlotus-new-downloader-kerrdown","status":"publish","type":"post","link":"https:\/\/unit42.paloaltonetworks.com\/ja\/tracking-oceanlotus-new-downloader-kerrdown\/","title":{"rendered":"OceanLotus\u306e\u65b0\u3057\u3044\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u30fcKerrDown\u306e\u8ffd\u8de1"},"content":{"rendered":"<div class=\"entry-content\">\n<p>OceanLotus (\u5225\u540dAPT32)\u306f\u3001\u6771\u5357\u30a2\u30b8\u30a2\u767a\u7965\u306e\u6700\u3082\u9ad8\u5ea6\u306a\u8105\u5a01\u653b\u6483\u8005\u306e1\u3064\u3067\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u3063\u3066\u3044\u308b\u8105\u5a01\u653b\u6483\u8005\u30b0\u30eb\u30fc\u30d7\u3067\u3059\u3002\u3053\u306e\u6570\u5e74\u9593\u306b<a href=\"https:\/\/blogs.360.cn\/post\/oceanlotus-apt.html\" target=\"_blank\" rel=\"noopener noreferrer\">\u8907\u6570\u306e\u653b\u6483\u30ad\u30e3\u30f3\u30da\u30fc\u30f3<\/a>\u304c\u8907\u6570\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u7d44\u7e54\u306b\u3088\u3063\u3066<a href=\"https:\/\/www.welivesecurity.com\/2018\/11\/20\/oceanlotus-new-watering-hole-attack-southeast-asia\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u5831\u544a<\/a>\u3055\u308c\u3001\u3053\u306e\u8105\u5a01\u653b\u6483\u8005\u304c\u4f7f\u7528\u3057\u3066\u3044\u308b\u30c4\u30fc\u30eb\u304a\u3088\u3073\u6226\u8853\u304c<a href=\"https:\/\/www.cybereason.com\/blog\/operation-cobalt-kitty-apt\" target=\"_blank\" rel=\"noopener noreferrer\">\u8a18\u9332<\/a>\u3055\u308c\u307e\u3057\u305f\u3002OceanLotus\u306e\u6a19\u7684\u306f\u30b0\u30ed\u30fc\u30d0\u30eb\u3067\u3059\u304c\u3001\u5f7c\u3089\u306e\u6d3b\u52d5\u304c\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u306e\u306f\u307b\u307c\u30a2\u30b8\u30a2\u592a\u5e73\u6d0b\u5730\u57df\u5185\u3067\u3001\u30d9\u30c8\u30ca\u30e0\u306b\u95a2\u4fc2\u306e\u3042\u308b\u8907\u6570\u306e\u696d\u754c\u3001\u5916\u56fd\u653f\u5e9c\u3001\u6d3b\u52d5\u5bb6\u3001\u53cd\u4f53\u5236\u6d3e\u306b\u308f\u305f\u3063\u3066\u6c11\u9593\u90e8\u9580\u3092\u6a19\u7684\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u30d6\u30ed\u30b0\u3067\u306f\u3001OceanLotus\u304c\u5c11\u306a\u304f\u3068\u30822018\u5e74\u4ee5\u964d\u306b\u30a2\u30af\u30c6\u30a3\u30d6\u306b\u4f7f\u7528\u3057\u3066\u3044\u3066\u3001\u79c1\u305f\u3061\u304c\u300cKerrDown\u300d\u3068\u540d\u4ed8\u3051\u305f\u3001\u65b0\u3057\u3044\u30ab\u30b9\u30bf\u30e0\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u30fc \u30de\u30eb\u30a6\u30a7\u30a2 \u30d5\u30a1\u30df\u30ea\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u307e\u305f\u3001<a href=\"https:\/\/en.wikipedia.org\/wiki\/Jaccard_index\" target=\"_blank\" rel=\"noopener noreferrer\">jaccard\u4fc2\u6570<\/a>\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u4f7f\u7528\u3057\u3066\u3001\u79c1\u305f\u3061\u306e\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u5185\u3067\u65b0\u3057\u3044KerrDown\u30de\u30eb\u30a6\u30a7\u30a2 \u30d5\u30a1\u30df\u30ea\u9593\u306e\u985e\u4f3c\u6027\u3092\u7d20\u65e9\u304f\u767a\u898b\u3057\u305f\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3082\u8aac\u660e\u3057\u307e\u3059\u3002\u3053\u306e\u624b\u6cd5\u306f\u3001\u5927\u91cf\u306e\u30b5\u30f3\u30d7\u30eb \u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u304b\u3089\u985e\u4f3c\u6027\u3092\u62bd\u51fa\u3057\u3001\u8907\u6570\u306e\u653b\u6483\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u3092\u7d50\u3073\u4ed8\u3051\u308b\u969b\u306b\u975e\u5e38\u306b\u5f79\u306b\u7acb\u3064\u3053\u3068\u304c\u8a3c\u660e\u3055\u308c\u307e\u3057\u305f\u3002\u5927\u91cf\u306e\u300cKerrDown\u300d\u30b5\u30f3\u30d7\u30eb\u304c\u898b\u3064\u304b\u3063\u3066\u3044\u308b\u306e\u3067\u3001\u79c1\u305f\u3061\u306fOceanLotus\u306e\u6d3b\u52d5\u6642\u9593\u304a\u3088\u3073\u66dc\u65e5\u306b\u95a2\u3057\u3066\u60f3\u5b9a\u3057\u3046\u308b\u30d1\u30bf\u30fc\u30f3\u3092\u898b\u5206\u3051\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3057\u305f\u3002\u3053\u308c\u306b\u3064\u3044\u3066\u306f\u3001\u3053\u306e\u30d6\u30ed\u30b0\u306e\u5f8c\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<p>\u79c1\u305f\u3061\u306f\u3001KerrDown\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u30fc\u3092\u6a19\u7684\u306b\u914d\u4fe1\u3059\u308b\u624b\u6cd5\u30922\u3064\u7279\u5b9a\u3057\u307e\u3057\u305f\u3002\u4e00\u65b9\u306f\u60aa\u610f\u306e\u3042\u308b\u30de\u30af\u30ed\u3092\u542b\u3080Microsoft Office\u306e\u6587\u66f8\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3067\u3001\u3082\u3046\u4e00\u65b9\u306f<a href=\"https:\/\/attack.mitre.org\/techniques\/T1073\/\" target=\"_blank\" rel=\"noopener noreferrer\">DLL\u30b5\u30a4\u30c9\u30ed\u30fc\u30c7\u30a3\u30f3\u30b0<\/a>\u3092\u5099\u3048\u305f\u6b63\u898f\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u542b\u3080RAR\u30a2\u30fc\u30ab\u30a4\u30d6\u3067\u3059\u3002RAR\u30a2\u30fc\u30ab\u30a4\u30d6 \u30d5\u30a1\u30a4\u30eb\u306e\u5834\u5408\u3001\u6a19\u7684\u3092\u6b3a\u304f\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u540d\u306f\u3001\u56f311\u306b\u793a\u3059\u3088\u3046\u306b\u3059\u3079\u3066\u30d9\u30c8\u30ca\u30e0\u8a9e\u3067\u3057\u305f\u3002\u79c1\u305f\u3061\u306e\u5206\u6790\u3067\u306f\u3001\u3053\u306e\u30d6\u30ed\u30b0\u3067\u8aac\u660e\u3059\u308b\u9032\u884c\u4e2d\u306e\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u306e\u4e3b\u306a\u6a19\u7684\u306f\u3001\u30d9\u30c8\u30ca\u30e0\u307e\u305f\u306f\u30d9\u30c8\u30ca\u30e0\u8a9e\u3092\u8a71\u3059\u500b\u4eba\u306e\u3044\u305a\u308c\u304b\u3067\u3042\u308b\u3053\u3068\u304c\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2><span style=\"color: #000000;\">\u60aa\u610f\u306e\u3042\u308b\u6587\u66f8<\/span><\/h2>\n<p>\u79c1\u305f\u3061\u306f\u30a2\u30af\u30c6\u30a3\u30d6\u306aMIME\u6587\u66f8\u304b\u3089\u5206\u6790\u3092\u958b\u59cb\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u306fOceanLotus\u304c\u4ee5\u524d\u4f7f\u7528\u3057\u3066\u3044\u305f\u3082\u306e\u3067\u3059\u304c\u3001\u4eca\u56de\u306f\u65b0\u3057\u3044\u30da\u30a4\u30ed\u30fc\u30c9\u3067\u3042\u308bKerrDown\u304c\u95a2\u4e0e\u3057\u3066\u3044\u307e\u3057\u305f\u3002\u30eb\u30a2\u30fc \u30cf\u30c3\u30b7\u30e5\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<p>(SHA256:89e19df797481ae2d2c895bcf030fe19e581976d2aef90c89bd6b3408579bfc3)<\/p>\n<p>\u4e0b\u56f31\u306f\u30eb\u30a2\u30fc \u30d5\u30a1\u30a4\u30eb\u306e\u30b9\u30ca\u30c3\u30d7\u30b7\u30e7\u30c3\u30c8\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u88ab\u5bb3\u8005\u304c\u30eb\u30a2\u30fc\u6587\u66f8\u3092\u958b\u304f\u3068\u3001\u305d\u308c\u306b\u306f\u30a4\u30e1\u30fc\u30b8 \u30d5\u30a1\u30a4\u30eb\u304c\u542b\u307e\u308c\u3066\u304a\u308a\u3001\u30de\u30af\u30ed\u3092\u6709\u52b9\u306b\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u8868\u793a\u3059\u308b\u3088\u3046\u88ab\u5bb3\u8005\u306b\u8981\u6c42\u3059\u308b\u30d9\u30c8\u30ca\u30e0\u8a9e\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8a18\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4e00\u898b\u3053\u306e\u6587\u66f8\u306b\u306f\u3001\u30de\u30af\u30ed\u3092\u6709\u52b9\u5316\u3059\u308b\u901a\u77e5\u4ee5\u5916\u3001\u4ed6\u306e\u5185\u5bb9\u306f\u306a\u3044\u3088\u3046\u306b\u898b\u3048\u307e\u3059\u3002\u3057\u304b\u3057\u3088\u304f\u898b\u308b\u3068\u30012\u3064\u306e\u7570\u306a\u308bbase64\u00a0blob\u304c\u30da\u30fc\u30b8\u5185\u306e\u5225\u3005\u306e\u8868\u306b\u633f\u5165\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u305d\u306e\u30d5\u30a9\u30f3\u30c8 \u30b5\u30a4\u30ba\u306f1\u306b\u5909\u66f4\u3055\u308c\u3066\u304a\u308a\u3001\u88ab\u5bb3\u8005\u306f\u5185\u5bb9\u3092\u898b\u843d\u3068\u3057\u3066\u3057\u307e\u3046\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3053\u306e\u624b\u6cd5\u3092\u3068\u3063\u3066\u3044\u308b\u3082\u3046\u4e00\u3064\u306e\u7406\u7531\u306f\u3001\u591a\u304f\u306e\u81ea\u52d5\u5316\u30c4\u30fc\u30eb\u306f\u3053\u306e\u3088\u3046\u306a\u30d5\u30a1\u30a4\u30eb\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u5185\u306b\u57cb\u3081\u8fbc\u307e\u308c\u305f\u30d0\u30a4\u30ca\u30ea\u306e\u5b58\u5728\u3092\u691c\u51fa\u3067\u304d\u307e\u3059\u304c\u3001\u3053\u306e\u624b\u6cd5\u3092\u3068\u308c\u3070\u691c\u51fa\u3092\u9003\u308c\u3089\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3001\u3068\u3044\u3046\u3053\u3068\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<h2><span style=\"color: #000000;\">\u914d\u4fe1\u6587\u66f8\u306e\u5206\u6790<\/span><\/h2>\n<figure id=\"attachment_96252\" aria-describedby=\"caption-attachment-96252\" style=\"width: 1024px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-1-Lure-document.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-96252 size-large lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-1-Lure-document-1024x666.png\" sizes=\"(max-width: 1093px) 100vw, 1093px\" srcset=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-1-Lure-document.png 1093w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-1-Lure-document-300x195.png 300w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-1-Lure-document-768x500.png 768w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-1-Lure-document-1024x666.png 1024w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-1-Lure-document-874x569.png 874w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-1-Lure-document-370x241.png 370w\" alt=\"\u00a0\u00a0\u56f31:\u00a0\u30eb\u30a2\u30fc\u6587\u66f8\" width=\"1024\" height=\"666\" \/><\/a><figcaption id=\"caption-attachment-96252\" class=\"wp-caption-text\">\u56f31: \u30eb\u30a2\u30fc\u6587\u66f8<\/figcaption><\/figure>\n<p>\u30d5\u30a9\u30f3\u30c8 \u30b5\u30a4\u30ba\u3092\u5927\u304d\u304f\u3059\u308b\u3068\u30012\u3064\u306e\u7570\u306a\u308b\u8868\u5185\u306ebase64\u00a0blob\u304c\u898b\u3048\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u30c7\u30b3\u30fc\u30c9\u3059\u308b\u3068\u3001\u56f32\u306b\u793a\u3059\u3088\u3046\u306b\u3001\u5404\u8868\u306e\u5148\u982d\u306bPE\u00a0DLL\u306eMZ\u30d8\u30c3\u30c0\u30fc\u304c\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_96253\" aria-describedby=\"caption-attachment-96253\" style=\"width: 784px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-2-Base64-encoded-pedll-files-embedded-as-text-in-the-document..png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-96253 size-full lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-2-Base64-encoded-pedll-files-embedded-as-text-in-the-document..png\" sizes=\"(max-width: 784px) 100vw, 784px\" srcset=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-2-Base64-encoded-pedll-files-embedded-as-text-in-the-document..png 784w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-2-Base64-encoded-pedll-files-embedded-as-text-in-the-document.-300x209.png 300w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-2-Base64-encoded-pedll-files-embedded-as-text-in-the-document.-768x534.png 768w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-2-Base64-encoded-pedll-files-embedded-as-text-in-the-document.-370x257.png 370w\" alt=\"\u56f32:\u00a0\u6587\u66f8\u306b\u30c6\u30ad\u30b9\u30c8\u3068\u3057\u3066\u57cb\u3081\u8fbc\u307e\u308c\u3066\u3044\u305fBase64\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u305fpedll\u30d5\u30a1\u30a4\u30eb\u00a0\" width=\"784\" height=\"545\" \/><\/a><figcaption id=\"caption-attachment-96253\" class=\"wp-caption-text\">\u56f32: \u6587\u66f8\u306b\u30c6\u30ad\u30b9\u30c8\u3068\u3057\u3066\u57cb\u3081\u8fbc\u307e\u308c\u3066\u3044\u305fBase64\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u305fpedll\u30d5\u30a1\u30a4\u30eb<\/figcaption><\/figure>\n<p>\u56f33\u306f\u57cb\u3081\u8fbc\u307f\u30de\u30af\u30ed\u304b\u3089\u629c\u7c8b\u3057\u305f\u30b3\u30fc\u30c9\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u3001iCheck\u5909\u6570\u306b\u57fa\u3065\u3044\u3066\u3069\u3061\u3089\u306ebase64\u00a0blob\u3092\u30c7\u30b3\u30fc\u30c9\u3059\u308b\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002\u3053\u306eiCheck\u5909\u6570\u306f\u3001\u88ab\u5bb3\u30b7\u30b9\u30c6\u30e0\u304c64\u30d3\u30c3\u30c8 \u30b7\u30b9\u30c6\u30e0\u4e0a\u3067\u52d5\u4f5c\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u306ftrue\u306b\u8a2d\u5b9a\u3055\u308c\u300132\u30d3\u30c3\u30c8 \u30b7\u30b9\u30c6\u30e0\u4e0a\u3067\u52d5\u4f5c\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u306ffalse\u306b\u8a2d\u5b9a\u3055\u308c\u308b\u30d6\u30fc\u30eb\u5024\u3067\u3059\u3002\u30b7\u30b9\u30c6\u30e0\u304c64\u30d3\u30c3\u30c8\u3067\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308b\u3068\u3001\u5de6\u5074\u306ebase64\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u305fblob\u304c\u30c7\u30b3\u30fc\u30c9\u3055\u308c\u3001\u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u306b\u306f\u53f3\u5074\u306ebase64\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u305fblob\u304c\u30c7\u30b3\u30fc\u30c9\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_96254\" aria-describedby=\"caption-attachment-96254\" style=\"width: 567px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-3-Base64-blob-selection-based-on-system-check.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-96254 size-full lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-3-Base64-blob-selection-based-on-system-check.png\" sizes=\"(max-width: 567px) 100vw, 567px\" srcset=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-3-Base64-blob-selection-based-on-system-check.png 567w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-3-Base64-blob-selection-based-on-system-check-300x146.png 300w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-3-Base64-blob-selection-based-on-system-check-310x150.png 310w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-3-Base64-blob-selection-based-on-system-check-370x179.png 370w\" alt=\"\u56f33:\u00a0\u30b7\u30b9\u30c6\u30e0 \u30c1\u30a7\u30c3\u30af\u306b\u57fa\u3065\u304fBase64\u00a0blob\u306e\u9078\u629e\" width=\"567\" height=\"275\" \/><\/a><figcaption id=\"caption-attachment-96254\" class=\"wp-caption-text\">\u56f33: \u30b7\u30b9\u30c6\u30e0 \u30c1\u30a7\u30c3\u30af\u306b\u57fa\u3065\u304fBase64 blob\u306e\u9078\u629e<\/figcaption><\/figure>\n<p>\u79c1\u305f\u3061\u306f\u3001<a href=\"https:\/\/www.motobit.com\/tips\/detpg_Base64\/\" target=\"_blank\" rel=\"noopener noreferrer\">Motobit<\/a>\u304c\u516c\u958b\u3057\u3066\u3044\u308bVBS\u30c7\u30b3\u30fc\u30c9\u95a2\u6570\u3092\u653b\u6483\u8005\u304c\u518d\u4f7f\u7528\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u3082\u6c17\u4ed8\u304d\u307e\u3057\u305f\u3002\u56f34\u306f\u3001\u30de\u30af\u30ed\u306e\u30b3\u30fc\u30c9\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u308bbase64\u95a2\u6570\u3068\u3001Motobit\u304c\u516c\u958b\u3057\u3066\u3044\u308bVBS\u00a0base64\u30c7\u30b3\u30fc\u30c0\u30fc\u95a2\u6570\u306e\u6bd4\u8f03\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_96255\" aria-describedby=\"caption-attachment-96255\" style=\"width: 1024px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-4-Base64-decoder-comparison.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-96255 size-large lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-4-Base64-decoder-comparison-1024x624.png\" sizes=\"(max-width: 1332px) 100vw, 1332px\" srcset=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-4-Base64-decoder-comparison.png 1332w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-4-Base64-decoder-comparison-300x183.png 300w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-4-Base64-decoder-comparison-768x468.png 768w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-4-Base64-decoder-comparison-1024x624.png 1024w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-4-Base64-decoder-comparison-874x533.png 874w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-4-Base64-decoder-comparison-370x226.png 370w\" alt=\"\u56f34:\u00a0Base64\u30c7\u30b3\u30fc\u30c0\u30fc\u306e\u6bd4\u8f03\" width=\"1024\" height=\"624\" \/><\/a><figcaption id=\"caption-attachment-96255\" class=\"wp-caption-text\">\u56f34: Base64\u30c7\u30b3\u30fc\u30c0\u30fc\u306e\u6bd4\u8f03<\/figcaption><\/figure>\n<h2><span style=\"color: #000000;\">Jaccard\u4fc2\u6570\u3092\u4f7f\u7528\u3057\u305fKerrDown\u30b5\u30f3\u30d7\u30eb\u306e\u985e\u4f3c\u6027\u5206\u6790<\/span><\/h2>\n<p>\u6587\u66f8\u304b\u3089\u4e21\u65b9\u306eDLL\u30d5\u30a1\u30a4\u30eb\u3092\u30c7\u30b3\u30fc\u30c9\u3057\u3066\u62bd\u51fa\u3057\u305f\u5f8c\u3001<a href=\"https:\/\/en.wikipedia.org\/wiki\/Jaccard_index\" target=\"_blank\" rel=\"noopener noreferrer\">Jaccard\u4fc2\u6570<\/a>\u3092\u4f7f\u7528\u3057\u305f\u985e\u4f3c\u6027\u5206\u6790\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u4f7f\u7528\u3057\u3066\u3001OceanLotus\u304c\u4f7f\u7528\u3057\u305f\u65e2\u77e5\u306e\u4e00\u9023\u306e\u30de\u30eb\u30a6\u30a7\u30a2 \u30d5\u30a1\u30df\u30ea\u306b\u5bfe\u3057\u3066\u30d0\u30a4\u30ca\u30ea\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3057\u305f\u304c\u3001\u4ee5\u524d\u306eOceanLotus\u30de\u30eb\u30a6\u30a7\u30a2 \u30d5\u30a1\u30df\u30ea\u3068\u306e\u4e00\u81f4\u306f\u3042\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u305f\u3060\u3057\u3001KerrDown\u30b5\u30f3\u30d7\u30eb\u306eimphash\u5024\u304a\u3088\u3073\u3053\u308c\u306b\u4ed8\u968f\u3059\u308bC2\u30c9\u30e1\u30a4\u30f3\u3092\u4f7f\u7528\u3059\u308b\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3067\u3001\u4ed6\u306e\u8907\u6570\u306e\u30b5\u30f3\u30d7\u30eb\u3092\u767a\u898b\u3067\u304d\u307e\u3057\u305f\u3002\u591a\u6570\u306e\u30b5\u30f3\u30d7\u30eb\u304c\u898b\u3064\u304b\u3063\u305f\u3053\u3068\u304b\u3089\u3001\u79c1\u305f\u3061\u306f\u518d\u5ea6<a href=\"https:\/\/en.wikipedia.org\/wiki\/Jaccard_index\" target=\"_blank\" rel=\"noopener noreferrer\">Jaccard\u4fc2\u6570<\/a>\u3092\u4f7f\u7528\u3059\u308b\u985e\u4f3c\u6027\u5206\u6790\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u4f7f\u7528\u3057\u3066\u3001\u898b\u3064\u304b\u3063\u305f\u3059\u3079\u3066\u306e\u30b5\u30f3\u30d7\u30eb\u9593\u306e\u985e\u4f3c\u6027\u3092\u5f15\u304d\u51fa\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u6bb5\u968e\u3067\u306f\u3001DLL\u30d5\u30a1\u30a4\u30eb\u304c\u30d0\u30c3\u30af\u30c9\u30a2\u306a\u306e\u304b\u305d\u306e\u4ed6\u306e\u6a5f\u80fd\u3092\u6301\u3063\u3066\u3044\u308b\u306e\u304b\u308f\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u3057\u305f\u304c\u3063\u3066\u79c1\u305f\u3061\u306f\u30012017\u5e74\u4ee5\u964d\u306b\u4f7f\u7528\u3055\u308c\u305f\u305d\u306e\u4ed6\u3044\u304f\u3064\u304b\u306e\u65e2\u77e5\u306eOceanLotus\u30de\u30eb\u30a6\u30a7\u30a2 \u30d5\u30a1\u30df\u30ea\u306e\u30b5\u30f3\u30d7\u30eb\u3092\u985e\u4f3c\u6027\u30c6\u30b9\u30c8\u306b\u542b\u3081\u307e\u3057\u305f\u3002\u307b\u3068\u3093\u3069\u306e\u5834\u5408\u3001\u305d\u308c\u3089\u306e\u30b5\u30f3\u30d7\u30eb\u306f\u3001\u88ab\u5bb3\u7aef\u672b\u306b\u30c9\u30ed\u30c3\u30d7\u3055\u308c\u305f\u6700\u7d42\u30da\u30a4\u30ed\u30fc\u30c9\u3067\u3059\u3002\u4e3b\u76ee\u7684\u306e1\u3064\u306f\u3001KerrDown\u304c\u3001\u79c1\u305f\u3061\u304c\u8ffd\u8de1\u3057\u3066\u304d\u305f\u65e2\u77e5\u306e\u30de\u30eb\u30a6\u30a7\u30a2 \u30d5\u30a1\u30df\u30ea\u306e\u4e9c\u7a2e\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u3001\u307e\u305f\u306fOceanLotus\u304c\u6226\u7565\u304a\u3088\u3073\u6700\u8fd1\u306e\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u306b\u65b0\u3057\u3044\u30de\u30eb\u30a6\u30a7\u30a2 \u30d5\u30a1\u30df\u30ea\u3092\u63a1\u7528\u3057\u3066\u3044\u308b\u306e\u304b\u3069\u3046\u304b\u3092\u7d20\u65e9\u304f\u898b\u5206\u3051\u308b\u3053\u3068\u3067\u3057\u305f\u3002<a href=\"https:\/\/pypi.org\/project\/networkx\/\" target=\"_blank\" rel=\"noopener noreferrer\">networkx<\/a>\u3092\u4f7f\u7528\u3057\u3066Jaccard\u4fc2\u6570\u306e\u7d50\u679c\u3092\u30d7\u30ed\u30c3\u30c8\u3059\u308b\u3068\u3001\u62bd\u51fa\u3057\u305f\u985e\u4f3c\u6027\u3092\u7d20\u65e9\u304f\u8996\u899a\u5316\u3067\u304d\u307e\u3059\u3002\u56f35\u304b\u3089\u308f\u304b\u308b\u3088\u3046\u306b\u3001networkx\u30b0\u30e9\u30d5\u306e\u53f3\u4e0a\u3067\u3001\u30b5\u30f3\u30d7\u30eb\u306e\u30af\u30e9\u30b9\u30bf\u30fc\u304c\u7a20\u5bc6\u306b\u5b58\u5728\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u4ed6\u306e\u65e2\u77e5\u306eOceanLotus\u30de\u30eb\u30a6\u30a7\u30a2 \u30d5\u30a1\u30df\u30ea\u306e\u30b5\u30f3\u30d7\u30eb\u3068\u306e\u985e\u4f3c\u6027\u306f\u3042\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u3053\u306e\u89b3\u5bdf\u306f\u3001\u79c1\u305f\u3061\u304c\u898b\u3066\u3044\u308b\u30b5\u30f3\u30d7\u30eb\u304c\u3001\u5206\u6790\u306e\u6642\u70b9\u3067OceanLotus\u30b0\u30eb\u30fc\u30d7\u306b\u3088\u3063\u3066\u63a1\u7528\u3055\u308c\u305f\u65b0\u3057\u3044\u30de\u30eb\u30a6\u30a7\u30a2 \u30d5\u30a1\u30df\u30ea\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3053\u3068\u3092\u7406\u89e3\u3059\u308b\u306e\u306b\u5f79\u306b\u7acb\u3061\u307e\u3057\u305f\u3002\u79c1\u305f\u3061\u306f\u3053\u308c\u3092KerrDown\u3068\u540d\u4ed8\u3051\u307e\u3057\u305f\u3002<\/p>\n<figure id=\"attachment_96256\" aria-describedby=\"caption-attachment-96256\" style=\"width: 1024px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-5-Similarity-analysis-using-Jaccard-Index.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-96256 size-large lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-5-Similarity-analysis-using-Jaccard-Index-1024x923.png\" sizes=\"(max-width: 1169px) 100vw, 1169px\" srcset=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-5-Similarity-analysis-using-Jaccard-Index.png 1169w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-5-Similarity-analysis-using-Jaccard-Index-300x270.png 300w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-5-Similarity-analysis-using-Jaccard-Index-768x692.png 768w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-5-Similarity-analysis-using-Jaccard-Index-1024x923.png 1024w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-5-Similarity-analysis-using-Jaccard-Index-874x788.png 874w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-5-Similarity-analysis-using-Jaccard-Index-370x334.png 370w\" alt=\"\u56f35: Jaccard\u4fc2\u6570\u3092\u4f7f\u7528\u3057\u305f\u985e\u4f3c\u6027\u5206\u6790\" width=\"1024\" height=\"923\" \/><\/a><figcaption id=\"caption-attachment-96256\" class=\"wp-caption-text\">\u56f35: Jaccard\u4fc2\u6570\u3092\u4f7f\u7528\u3057\u305f\u985e\u4f3c\u6027\u5206\u6790<\/figcaption><\/figure>\n<h2 style=\"text-align: left;\"><span style=\"color: #000000;\">KerrDown\u3068Cobalt\u00a0Strike\u00a0Beacon\u306e\u95a2\u4fc2<\/span><\/h2>\n<p>\u4e0a\u8a18\u306e\u914d\u4fe1\u6587\u66f8\u306e\u5206\u6790\u3067\u8aac\u660e\u3057\u305f\u3088\u3046\u306b\u3001OS\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306b\u5fdc\u3058\u3066\u3001\u57cb\u3081\u8fbc\u307e\u308c\u305fKerrDown\u306eDLL\u306e\u3044\u305a\u308c\u304b\u304c\u88ab\u5bb3\u7aef\u672b\u306b\u30c9\u30ed\u30c3\u30d7\u3055\u308c\u307e\u3059\u3002DLL\u306f\u3001'Users\\Administrator\\AppData\\Roaming\\'\u3068\u3044\u3046\u5834\u6240\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u3001'main_background.png'\u3068\u3057\u3066\u30c9\u30ed\u30c3\u30d7\u3055\u308c\u307e\u3059\u3002DLL\u306f\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u3092URL\u304b\u3089\u53d6\u5f97\u3057\u3001DES\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u4f7f\u7528\u3057\u3066\u3053\u308c\u3092\u5fa9\u53f7\u3057\u3001\u30e1\u30e2\u30ea\u5185\u3067\u3053\u308c\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001KerrDown\u00a0DLL\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u30fc\u306e\u307f\u304c\u30b7\u30b9\u30c6\u30e0\u306b\u4fdd\u5b58\u3055\u308c\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u304c\u30b7\u30b9\u30c6\u30e0\u306b\u66f8\u304d\u8fbc\u307e\u308c\u308b\u3053\u3068\u306a\u304f\u30e1\u30e2\u30ea\u5185\u3067\u76f4\u63a5\u5b9f\u884c\u3055\u308c\u308b\u3053\u3068\u304c\u89b3\u5bdf\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u88681\u306f\u3001\u88ab\u5bb3\u7aef\u672b\u306eOS\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306b\u5fdc\u3058\u3066\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u30fc\u304c\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3088\u3046\u3068\u3059\u308bURL\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<table class=\"aligncenter\" data-tablelook=\"0\" data-tablestyle=\"Custom\">\n<tbody>\n<tr>\n<td style=\"width: 188.8px;\" data-celllook=\"4369\"><b>OS\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3<\/b><span data-ccp-props=\"{&quot;335559738&quot;:36,&quot;335559739&quot;:36}\">\u00a0<\/span><\/td>\n<td style=\"width: 276.8px;\" data-celllook=\"273\"><b>URL<\/b><\/td>\n<td style=\"width: 387.2px;\" data-celllook=\"273\"><b>\u30e6\u30fc\u30b6\u30fc \u30a8\u30fc\u30b8\u30a7\u30f3\u30c8<\/b><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 188.8px;\" data-celllook=\"4368\">32\u30d3\u30c3\u30c8<\/td>\n<td style=\"width: 276.8px;\" data-celllook=\"272\">https:\/\/syn.servebbs[.]com\/kuss32.gif<\/td>\n<td style=\"width: 387.2px;\" data-celllook=\"272\">Mozilla\/5.0 (Windows NT 10.0; Win32; x32; rv:60.0)<\/td>\n<\/tr>\n<tr>\n<td style=\"width: 188.8px;\" data-celllook=\"4368\">64\u30d3\u30c3\u30c8<\/td>\n<td style=\"width: 276.8px;\" data-celllook=\"272\">https:\/\/syn.servebbs[.]com\/kuss64.gif<\/td>\n<td style=\"width: 387.2px;\" data-celllook=\"272\">Mozilla\/5.0 (Windows NT 10.0; Win64; x64; rv:60.0)<span data-ccp-props=\"{&quot;335559738&quot;:36,&quot;335559739&quot;:36}\">\u00a0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: left;\"><i>\u88681: \u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306b\u5fdc\u3058\u305f\u30da\u30a4\u30ed\u30fc\u30c9DLL\u306e\u9078\u629e<\/i><\/p>\n<p>KerrDown\u306e\u6700\u7d42\u30da\u30a4\u30ed\u30fc\u30c9\u3078\u306e\u30ea\u30f3\u30af\u306f\u3001\u5206\u6790\u6642\u306b\u4f9d\u7136\u3068\u3057\u3066\u30a2\u30af\u30c6\u30a3\u30d6\u3060\u3063\u305f\u305f\u3081\u3001\u30b3\u30d4\u30fc\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3067\u304d\u307e\u3057\u305f\u3002\u3053\u308c\u306fCobalt\u00a0Strike\u00a0Beacon\u306e\u4e9c\u7a2e\u3067\u3057\u305f\u3002\u307e\u305f\u3001Cybereason\u3082\u3001\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u3067Cobalt\u00a0Strike\u3092\u4f7f\u7528\u3057\u305fOceanLotus\u306b\u3064\u3044\u3066\u3001\u4ee5\u524d\u306b<a href=\"https:\/\/www.cybereason.com\/blog\/operation-cobalt-kitty-apt\" target=\"_blank\" rel=\"noopener noreferrer\">\u8a18\u4e8b\u3092\u767a\u8868<\/a>\u3057\u3066\u3044\u307e\u3059\u3002\u4f9d\u7136\u3068\u3057\u3066\u3001\u65b0\u3057\u3044\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u30fc \u30de\u30eb\u30a6\u30a7\u30a2 \u30d5\u30a1\u30df\u30ea\u3092\u4f7f\u7528\u3057\u3066Cobalt\u00a0Strike\u306e\u6700\u7d42\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u914d\u4fe1\u3057\u3066\u3044\u308b\u306e\u306f\u8208\u5473\u6df1\u3044\u3053\u3068\u3067\u3059\u3002\u4eca\u56de\u306e\u30b1\u30fc\u30b9\u3067\u308f\u304b\u308b\u3068\u304a\u308a\u3001\u3053\u306e\u30de\u30eb\u30a6\u30a7\u30a2\u306e\u76ee\u7684\u306f\u3001\u30e1\u30e2\u30ea\u306bCobalt\u00a0Strike Beacon\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u3059\u3002Cobalt\u00a0Strike\u306f\u3001\u5546\u7528\u306e\u4fb5\u5165\u30c6\u30b9\u30c8 \u30c4\u30fc\u30eb\u3067\u3059\u304c\u3001<a href=\"https:\/\/unit42.paloaltonetworks.com\/unit42-new-threat-actor-group-darkhydrus-targets-middle-east-government\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u3055\u307e\u3056\u307e\u306a\u8105\u5a01\u653b\u6483\u8005<\/a>\u304c\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u3067\u3053\u306e\u30c4\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u3066\u304d\u305f\u3053\u3068\u304c\u308f\u304b\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2 aria-level=\"1\"><span style=\"color: #000000;\">KerrDown\u3092\u542b\u3080RAR\u30a2\u30fc\u30ab\u30a4\u30d6<\/span><\/h2>\n<p>KerrDown\u3092\u8abf\u3079\u3066\u3044\u308b\u3046\u3061\u306b\u3001\u8907\u6570\u306eRAR\u30d5\u30a1\u30a4\u30eb\u306b\u3053\u306e\u30de\u30eb\u30a6\u30a7\u30a2\u306e\u4e9c\u7a2e\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002\u3053\u306e\u4e9c\u7a2e\u306e\u914d\u4fe1\u624b\u6cd5\u3084\u6a19\u7684\u306f\u307e\u3060\u308f\u304b\u3063\u3066\u3044\u307e\u305b\u3093\u3002\u653b\u6483\u8005\u306f\u3001\u6bb5\u968e\u3092\u8ffd\u52a0\u3057\u305f\u308a\u3001\u5727\u7e2e\u304a\u3088\u3073\u6697\u53f7\u5316\u306b\u3088\u3063\u3066\u5404\u6bb5\u968e\u3092\u96a0\u853d\u3057\u305f\u308a\u3057\u3066\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u30fc\u306e\u30b3\u30fc\u30c9\u3092\u5909\u66f4\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u60aa\u610f\u306e\u3042\u308b\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3059\u308b\u65b9\u6cd5\u3092\u3001Office\u30de\u30af\u30ed\u304b\u3089\u3001\u5408\u6cd5\u7684\u306a\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4ecb\u3057\u305fDLL\u30b5\u30a4\u30c9\u30ed\u30fc\u30c7\u30a3\u30f3\u30b0\u624b\u6cd5\u306b\u5909\u66f4\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3><span style=\"color: #000000;\">RAR\u30a2\u30fc\u30ab\u30a4\u30d6<\/span><\/h3>\n<p>(SHA256:040abac56542a2e0f384adf37c8f95b2b6e6ce3a0ff969e3c1d572e6b4053ff3)<\/p>\n<p>\u306b\u306f\u3001\u82f1\u8a9e\u3067\u300cComplaint letter(\u82e6\u60c5\u66f8)\u300d\u3092\u610f\u5473\u3059\u308b\u300cDon\u00a0khieu\u00a0nai.rar\u300d\u3068\u3044\u3046\u30d9\u30c8\u30ca\u30e0\u8a9e\u306e\u30d5\u30a1\u30a4\u30eb\u540d\u304c\u4ed8\u3044\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30a2\u30fc\u30ab\u30a4\u30d6\u306b\u306f\u3001\u82f1\u8a9e\u3067\u300c\u3042\u306a\u305f\u306e\u4f1a\u793e\u306e\u6d3b\u7528\u6cd5\u3092\u3082\u3063\u3068\u8a73\u3057\u304f\u77e5\u308b\u300d\u3092\u610f\u5473\u3059\u308b\u3001\u300cNoi\u00a0dung chi\u00a0tiet\u00a0don\u00a0khieu\u00a0nai\u00a0gui\u00a0cong\u00a0ty.exe\u300d\u3068\u3044\u3046\u540d\u524d\u306e\u3001\u5408\u6cd5\u7684\u306a\u65e7\u30d0\u30fc\u30b8\u30e7\u30f3\u306eMicrosoft Word (Microsoft Word 2007)\u5b9f\u884c\u53ef\u80fd\u30d5\u30a1\u30a4\u30eb\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u653b\u6483\u8005\u306f\u3001DLL\u30b5\u30a4\u30c9\u30ed\u30fc\u30c7\u30a3\u30f3\u30b0\u624b\u6cd5\u3092\u4f7f\u7528\u3057\u3066\u3001\u65e7\u30d0\u30fc\u30b8\u30e7\u30f3\u306eMicrosoft Word\u306b\u3088\u3063\u3066\u60aa\u610f\u306e\u3042\u308bDLL\u3092\u30ed\u30fc\u30c9\u3057\u3066\u3044\u307e\u3057\u305f\u3002\u30a2\u30fc\u30ab\u30a4\u30d6\u5185\u306e\u5b9f\u884c\u53ef\u80fd\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\u3068\u3001\u60aa\u610f\u306e\u3042\u308bDLL\u304c\u540c\u3058\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u30ed\u30fc\u30c9\u3055\u308c\u307e\u3059\u3002\u3053\u306eDLL\u306f\u3001\u8907\u6570\u6bb5\u968e\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u3001\u5404\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u624b\u6cd5\u3092\u7528\u3044\u3066\u6b21\u306e\u6bb5\u968e\u3092\u96a0\u853d\u3057\u307e\u3059\u3002\u5168\u4f53\u7684\u306a\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u624b\u9806\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<ol>\n<li aria-setsize=\"-1\" data-aria-level=\"1\" data-aria-posinset=\"1\" data-leveltext=\"%1.\" data-listid=\"1\">Microsoft Word\u306eexe\u306f\u3001wwlib.dll\u3092\u540c\u3058\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u30ed\u30fc\u30c9\u3057\u3001DLL\u306e\u300cFMain\u300d\u95a2\u6570\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/li>\n<li aria-setsize=\"-1\" data-aria-level=\"1\" data-aria-posinset=\"1\" data-leveltext=\"%1.\" data-listid=\"1\">DLL\u306f\u3001\u672c\u6587\u5185\u306b\u3042\u308bbase64\u3067\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u305f\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u30c7\u30b3\u30fc\u30c9\u3057\u3066\u5b9f\u884c\u3057\u307e\u3059\u3002<span data-ccp-props=\"{&quot;335559738&quot;:36,&quot;335559739&quot;:36}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-aria-level=\"1\" data-aria-posinset=\"1\" data-leveltext=\"%1.\" data-listid=\"1\">\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306f\u3001<a href=\"https:\/\/www.oberhumer.com\/opensource\/ucl\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u30aa\u30fc\u30d7\u30f3 \u30bd\u30fc\u30b9\u306e\u5727\u7e2e\u30b3\u30fc\u30c9UCL<\/a>\u3092\u4f7f\u7528\u3057\u3066\u5727\u7e2e\u3055\u308c\u305f2\u3064\u76ee\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u89e3\u51cd\u3057\u3066\u3001\u5b9f\u884c\u3057\u307e\u3059\u3002<span data-ccp-props=\"{&quot;335559738&quot;:36,&quot;335559739&quot;:36}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-aria-level=\"1\" data-aria-posinset=\"1\" data-leveltext=\"%1.\" data-listid=\"1\">2\u3064\u76ee\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306f\u3001AES\u30673\u3064\u76ee\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u5fa9\u53f7\u3057\u307e\u3059\u3002<span data-ccp-props=\"{&quot;335559738&quot;:36,&quot;335559739&quot;:36}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-aria-level=\"1\" data-aria-posinset=\"1\" data-leveltext=\"%1.\" data-listid=\"1\">3\u3064\u76ee\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306f\u3001\u30ea\u30e2\u30fc\u30c8 \u30ed\u30b1\u30fc\u30b7\u30e7\u30f3(https:\/\/cortanasyn[.]com\/Avcv)\u304b\u3089\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\u3057\u3066\u3001\u5b9f\u884c\u3057\u307e\u3059\u3002<span data-ccp-props=\"{&quot;335559738&quot;:36,&quot;335559739&quot;:36}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-aria-level=\"1\" data-aria-posinset=\"1\" data-leveltext=\"%1.\" data-listid=\"1\">4\u3064\u76ee\u306e\u30b7\u30a7\u30eb\u30b3\u30fc\u30c9\u306f\u3001\u57cb\u3081\u8fbc\u307e\u308c\u305fCobalt\u00a0Strike Beacon DLL\u3092\u30e1\u30e2\u30ea\u5185\u306b\u30ed\u30fc\u30c9\u3057\u3066\u3001\u5b9f\u884c\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<figure id=\"attachment_96257\" aria-describedby=\"caption-attachment-96257\" style=\"width: 647px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-6-Execution-flow-of-sideloaded-malicious-downloader.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-96257 size-full lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-6-Execution-flow-of-sideloaded-malicious-downloader.png\" sizes=\"(max-width: 647px) 100vw, 647px\" srcset=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-6-Execution-flow-of-sideloaded-malicious-downloader.png 647w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-6-Execution-flow-of-sideloaded-malicious-downloader-300x280.png 300w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-6-Execution-flow-of-sideloaded-malicious-downloader-370x345.png 370w\" alt=\"\u56f36:\u00a0\u30b5\u30a4\u30c9\u30ed\u30fc\u30c7\u30a3\u30f3\u30b0\u3055\u308c\u305f\u60aa\u610f\u306e\u3042\u308b\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u30fc\u306e\u5b9f\u884c\u30d5\u30ed\u30fc\" width=\"647\" height=\"604\" \/><\/a><figcaption id=\"caption-attachment-96257\" class=\"wp-caption-text\">\u56f36: \u30b5\u30a4\u30c9\u30ed\u30fc\u30c7\u30a3\u30f3\u30b0\u3055\u308c\u305f\u60aa\u610f\u306e\u3042\u308b\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u30fc\u306e\u5b9f\u884c\u30d5\u30ed\u30fc<\/figcaption><\/figure>\n<p>\u79c1\u305f\u3061\u306e\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u5168KerrDown\u30b5\u30f3\u30d7\u30eb\u306e\u30b3\u30f3\u30d1\u30a4\u30eb \u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3092\u78ba\u8a8d\u3057\u3066\u3001\u4ee5\u4e0b\u306e2\u70b9\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002<span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<ul>\n<li>OceanLotus\u306f\u3001\u9045\u304f\u3068\u30822018\u5e743\u6708\u304b\u3089\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u3067\u3053\u306e\u65b0\u3057\u3044\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u30fc\u3092\u4f7f\u7528\u3057\u3066\u304a\u308a\u3001\u73fe\u5728\u3082\u5f15\u304d\u7d9a\u304d\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u3067\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u56f37\u306b\u3001KerrDown\u30b5\u30f3\u30d7\u30eb\u306e\u6642\u7cfb\u5217\u3092\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<figure id=\"attachment_96258\" aria-describedby=\"caption-attachment-96258\" style=\"width: 1024px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-7-Downloader-DLL-compile-time-lines.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-96258 size-large lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-7-Downloader-DLL-compile-time-lines-1024x615.png\" sizes=\"(max-width: 1418px) 100vw, 1418px\" srcset=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-7-Downloader-DLL-compile-time-lines.png 1418w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-7-Downloader-DLL-compile-time-lines-300x180.png 300w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-7-Downloader-DLL-compile-time-lines-768x461.png 768w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-7-Downloader-DLL-compile-time-lines-1024x615.png 1024w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-7-Downloader-DLL-compile-time-lines-874x525.png 874w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-7-Downloader-DLL-compile-time-lines-370x222.png 370w\" alt=\"\u56f37:\u00a0\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u30fcDLL\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u306e\u6642\u7cfb\u5217\" width=\"1024\" height=\"615\" \/><\/a><figcaption id=\"caption-attachment-96258\" class=\"wp-caption-text\">\u56f37: \u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u30fcDLL\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u306e\u6642\u7cfb\u5217<\/figcaption><\/figure>\n<ul>\n<li><a href=\"https:\/\/www.volexity.com\/blog\/2017\/11\/06\/oceanlotus-blossoms-mass-digital-surveillance-and-exploitation-of-asean-nations-the-media-human-rights-and-civil-society\/\" target=\"_blank\" rel=\"noopener noreferrer\">OceanLotus\u30b0\u30eb\u30fc\u30d7\u306e\u8d77\u6e90\u304c\u30d9\u30c8\u30ca\u30e0\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3053\u3068<\/a>\u306f\u3001\u65e2\u306b\u5e83\u304f\u8a8d\u8b58\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u79c1\u305f\u3061\u306f\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u30b5\u30f3\u30d7\u30eb\u304b\u3089\u3001\u60f3\u5b9a\u3057\u3046\u308b\u6d3b\u52d5\u6642\u9593\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u898b\u3064\u3051\u305f\u3044\u3068\u8003\u3048\u307e\u3057\u305f\u3002\u30d9\u30c8\u30ca\u30e0\u6a19\u6e96\u6642\u3067\u3042\u308bGMT +7\u306b\u57fa\u3065\u3044\u3066\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u9593\u3092\u898b\u3066\u307f\u308b\u3068\u3001\u3053\u306e\u30b0\u30eb\u30fc\u30d7\u306e\u60f3\u5b9a\u3055\u308c\u308b\u6d3b\u52d5\u6642\u9593\u306b\u3064\u3044\u3066\u660e\u3089\u304b\u306a\u30d1\u30bf\u30fc\u30f3\u304c\u898b\u3064\u304b\u308a\u307e\u3057\u305f\u3002OceanLotus\u30b0\u30eb\u30fc\u30d7\u306e\u5178\u578b\u7684\u306a\u6d3b\u52d5\u30d1\u30bf\u30fc\u30f3\u306f\u5348\u524d9\u6642\u304b\u3089\u5348\u5f8c6\u6642\u3067\u3042\u308a\u3001\u5927\u534a\u306e\u30b5\u30f3\u30d7\u30eb\u306f\u3053\u306e\u6642\u9593\u5e2f\u306b\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002\u56f38\u306b\u3001\u79c1\u305f\u3061\u306e\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3067\u691c\u51fa\u3055\u308c\u305f\u5404\u56fa\u6709\u30b5\u30f3\u30d7\u30eb\u306e\u3001GMT +7\u3067\u306e\u30de\u30eb\u30a6\u30a7\u30a2 \u30b3\u30f3\u30d1\u30a4\u30eb \u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3092\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<figure id=\"attachment_96259\" aria-describedby=\"caption-attachment-96259\" style=\"width: 1024px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-8-Malware-compilation-times-in-GMT-7.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-96259 size-large lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-8-Malware-compilation-times-in-GMT-7-1024x615.png\" sizes=\"(max-width: 1376px) 100vw, 1376px\" srcset=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-8-Malware-compilation-times-in-GMT-7.png 1376w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-8-Malware-compilation-times-in-GMT-7-300x180.png 300w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-8-Malware-compilation-times-in-GMT-7-768x461.png 768w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-8-Malware-compilation-times-in-GMT-7-1024x615.png 1024w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-8-Malware-compilation-times-in-GMT-7-874x525.png 874w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-8-Malware-compilation-times-in-GMT-7-370x222.png 370w\" alt=\"\u56f38:\u00a0\u30de\u30eb\u30a6\u30a7\u30a2 \u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u9593(GMT +7)\" width=\"1024\" height=\"615\" \/><\/a><figcaption id=\"caption-attachment-96259\" class=\"wp-caption-text\">\u56f38: \u30de\u30eb\u30a6\u30a7\u30a2 \u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u9593(GMT +7)<\/figcaption><\/figure>\n<ul>\n<li><span data-ccp-props=\"{}\">\u00a0<\/span>\u307e\u305f\u3001\u3059\u3079\u3066\u306e\u30b5\u30f3\u30d7\u30eb\u304c\u6708\u66dc\u304b\u3089\u91d1\u66dc\u3001\u3059\u306a\u308f\u3061\u5e73\u65e5\u306b\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u3066\u3044\u305f\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002\u3057\u305f\u304c\u3063\u3066\u3001OceanLotus\u30b0\u30eb\u30fc\u30d7\u304c\u3001\u5e73\u65e5\u306b\u6d3b\u52d5\u3057\u3001\u9031\u672b\u306b\u4f11\u3080\u3053\u3068\u306f\u660e\u3089\u304b\u3067\u3059\u3002\u56f39\u306b\u3001\u5e73\u65e5\u306b\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u305f\u30b5\u30f3\u30d7\u30eb\u3092\u793a\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<figure id=\"attachment_96260\" aria-describedby=\"caption-attachment-96260\" style=\"width: 1024px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-9-Malware-compilation-during-weekdays.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-96260 size-large lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-9-Malware-compilation-during-weekdays-1024x615.png\" sizes=\"(max-width: 1063px) 100vw, 1063px\" srcset=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-9-Malware-compilation-during-weekdays.png 1063w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-9-Malware-compilation-during-weekdays-300x180.png 300w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-9-Malware-compilation-during-weekdays-768x461.png 768w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-9-Malware-compilation-during-weekdays-1024x615.png 1024w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-9-Malware-compilation-during-weekdays-874x525.png 874w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-9-Malware-compilation-during-weekdays-370x222.png 370w\" alt=\"\u56f39:\u00a0\u5e73\u65e5\u306e\u30de\u30eb\u30a6\u30a7\u30a2 \u30b3\u30f3\u30d1\u30a4\u30eb\" width=\"1024\" height=\"615\" \/><\/a><figcaption id=\"caption-attachment-96260\" class=\"wp-caption-text\">\u56f39: \u5e73\u65e5\u306e\u30de\u30eb\u30a6\u30a7\u30a2 \u30b3\u30f3\u30d1\u30a4\u30eb<\/figcaption><\/figure>\n<h2 style=\"text-align: left;\"><span style=\"color: #000000;\">\u7d50\u8ad6<\/span><\/h2>\n<p>OceanLotus\u306f\u3001\u6570\u5e74\u306b\u308f\u305f\u3063\u3066\u6d3b\u52d5\u3057\u3066\u3044\u308b\u8105\u5a01\u653b\u6483\u8005\u30b0\u30eb\u30fc\u30d7\u3067\u3042\u308a\u3001\u4f9d\u7136\u3068\u3057\u3066\u30a2\u30b8\u30a2\u592a\u5e73\u6d0b\u5730\u57df\u3067\u6700\u3082\u9ad8\u5ea6\u306a\u8105\u5a01\u653b\u6483\u8005\u306e\uff11\u3064\u3067\u3059\u3002\u6700\u8fd1\u306e\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u3067\u65b0\u3057\u3044KerrDown\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u30fc\u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304b\u3089\u308f\u304b\u308b\u3068\u304a\u308a\u3001\u3053\u306e\u30b0\u30eb\u30fc\u30d7\u306f\u3001\u5168\u4f53\u7684\u306a\u6d3b\u52d5\u304a\u3088\u3073\u6226\u7565\u3067\u3001\u4eca\u3082\u5f15\u304d\u7d9a\u304d\u65b0\u3057\u3044\u30c4\u30fc\u30eb\u3084\u6280\u6cd5\u3092\u4f5c\u6210\u3057\u63a1\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u3053\u306e\u30b0\u30eb\u30fc\u30d7\u306e\u6d3b\u52d5\u3092\u7d99\u7d9a\u7684\u306b\u628a\u63e1\u3057\u3001\u8ffd\u8de1\u3059\u308b\u3053\u3068\u306f\u4e0d\u53ef\u6b20\u3067\u3001\u3053\u306e\u3088\u3046\u306a\u8105\u5a01\u3092\u7684\u78ba\u306b\u9632\u5fa1\u3059\u308b\u80fd\u529b\u306f\u5fc5\u9808\u3067\u3059\u3002\u89b3\u6e2c\u3055\u308c\u305f\u5927\u91cf\u306e\u30b5\u30f3\u30d7\u30eb\u304b\u3089\u3001\u79c1\u305f\u3061\u306f\u60f3\u5b9a\u3057\u3046\u308b\u6d3b\u52d5\u6642\u9593\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u898b\u3064\u3051\u307e\u3057\u305f\u3002\u305d\u306e\u7d50\u679c\u3001\u3053\u306e\u30b0\u30eb\u30fc\u30d7\u306f\u3001\u898f\u5247\u7684\u306a\u6d3b\u52d5\u6642\u9593\u5e2f\u3092\u6301\u3063\u3066\u304a\u308a\u3001\u30d9\u30c8\u30ca\u30e0\u3084\u8fd1\u96a3\u8af8\u56fd\u306e\u5730\u57df\u304b\u3089\u6d3b\u52d5\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002\u89b3\u6e2c\u3055\u308c\u305f\u6a19\u7684\u306e\u5927\u534a\u304c\u30d9\u30c8\u30ca\u30e0\u8a9e\u570f\u3067\u3059\u304c\u3001OceanLotus\u306e\u6a19\u7684\u306f\u5730\u7406\u7684\u306b\u3082\u696d\u7a2e\u7684\u306b\u3082\u3088\u308a\u5e83\u7bc4\u306b\u308f\u305f\u3063\u3066\u3044\u308b\u3053\u3068\u304b\u3089\u3001\u30b0\u30eb\u30fc\u30d7\u306f\u4ed6\u306e\u6a19\u7684\u306b\u5bfe\u3057\u3066\u3082\u540c\u3058\u30c4\u30fc\u30eb\u3068\u6226\u7565\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002\u00a0<span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p><span data-ccp-props=\"{}\">\u00a0<\/span>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306e\u304a\u5ba2\u69d8\u306f\u3001\u4ee5\u4e0b\u306b\u3088\u3063\u3066\u65e2\u306b\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li><span data-ccp-props=\"{}\">\u00a0<\/span>\u3053\u306e\u30ec\u30dd\u30fc\u30c8\u306e\u3059\u3079\u3066\u306e\u30b5\u30f3\u30d7\u30eb\u306fWildFire\u5185\u3067\u60aa\u610f\u304c\u3042\u308b\u3068\u5224\u65ad\u3055\u308c\u307e\u3059<span data-ccp-props=\"{&quot;134233279&quot;:true}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-aria-level=\"1\" data-aria-posinset=\"2\" data-font=\"Symbol\" data-leveltext=\"\uf0b7\" data-listid=\"7\">\u30c9\u30e1\u30a4\u30f3\u306f\u60aa\u610f\u304c\u3042\u308b\u3082\u306e\u3068\u3057\u3066\u5206\u985e\u3055\u308c\u3066\u3044\u307e\u3059<span data-ccp-props=\"{&quot;134233279&quot;:true}\">\u00a0<\/span><\/li>\n<li aria-setsize=\"-1\" data-aria-level=\"1\" data-aria-posinset=\"3\" data-font=\"Symbol\" data-leveltext=\"\uf0b7\" data-listid=\"7\">\u6b21\u306e\u3088\u3046\u306a\u3001\u8ffd\u52a0\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u305f\u3081\u306eAutofocus\u30bf\u30b0\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<a href=\"https:\/\/autofocus.paloaltonetworks.com\/\">OceanLotus<\/a>\u304a\u3088\u3073<a href=\"https:\/\/autofocus.paloaltonetworks.com\/\">KerrDown<\/a>\u3002<\/li>\n<\/ul>\n<h2><span style=\"color: #000000;\">IOC<\/span><\/h2>\n<h3><span style=\"color: #000000;\">\u30eb\u30a2\u30fc\u6587\u66f8:<\/span><\/h3>\n<p><span data-ccp-props=\"{}\">\u00a0<\/span>73dcbcc47d6bd95dcf031ebbd34ac42301a20ee1143ac130b405e79b4ba40fc8<\/p>\n<p>89e19df797481ae2d2c895bcf030fe19e581976d2aef90c89bd6b3408579bfc3<\/p>\n<p>a4a066341b4172d2cb752de4b938bf678ceb627ecb72594730b78bd05a2fad9d<\/p>\n<p>8bf22202e4fd4c005afde2266413cba9d1b749b1a2d75deac0c35728b5eb3af8<span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p>df8210d20c5eb80d44ba8fa4c41c26c8421dcb20168e4f796e4955e01ebc9e13<\/p>\n<p>94fab926b73a6a5bc71d655c8d611b40e80464da9f1134bfce7b930e23e273ab<\/p>\n<p>4321a9f95901a77b4acfbaef3596cf681712345e1cbd764873c6643fe9da7331<\/p>\n<h3><span style=\"color: #000000;\">KerrDown\u00a0DLL:<\/span><\/h3>\n<p><span data-ccp-props=\"{}\">\u00a0<\/span>4a0309d8043e8acd7cb5c7cfca95223afe9c15a1c34578643b49ded4b786506b<\/p>\n<p>4b431af677041dae3c988fcc901ac8ec6e74c6e1467787bf099c4abd658be5be<\/p>\n<p>4bc00f7d638e042da764e8648c03c0db46700599dd4f08d117e3e9e8b538519b<\/p>\n<p>4e2f8f104e6cd07508c5b7d49737a1db5eeba910adfdb4c19442a7699dc78cfc<span 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data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p>60b65ebb921dca4762aef427181775d10bbffc30617d777102762ab7913a5aa1<\/p>\n<p>6146aedfe47597606fb4b05458ec4b99d4e1042da7dc974fa33a57e282cd7349<\/p>\n<p>6245b74b1cc830ed95cb630192c704da66600b90a331d9e6db70210acb6c7dfa<\/p>\n<p>67cd191eb2322bf8b0f04a63a9e7cb7bc52fb4a4444fcb8fed2963884aede3aa<\/p>\n<p>68f77119eae5e9d2404376f2d87e71e4ab554c026e362c57313e5881005ae79e<\/p>\n<p>69e679daaaff3832c39671bf2b813b5530a70fb763d381f9a6e22e3bc493c8a9<\/p>\n<p>6faa7deb1e1e0c3a7c62c2bb0ecdfa56b6e3ba4fe16971ec4572267ac70b9177<\/p>\n<p>6fb397e90f72783adec279434fe805c732ddb7d1d6aa72f19e91a1bf585e1ea5<span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p>70db041fb5aadb63c1b8ae57ba2699baa0086e9b011219dcebcccbf632017992<\/p>\n<p>7673f5468ba3cf01500f6bb6a19ce7208c8b6fc24f1a3a388eca491bc25cd9cd<\/p>\n<p>77805a46f73e118ae2428f8c22ba28f79f7c60aeb6305d41c0bf3ebb9ce70f94<\/p>\n<p>788265447391189ffc1956ebfec990dc051b56f506402d43cd1d4de96709c082<\/p>\n<p>7be613237b57fbc3cb83d001efadeed9936a2f519c514ab80de8285bdc5a666c<\/p>\n<p>7dbb7fab4782f5e3b0c416c05114f2a51f12643805d5f3d0cd80d32272f2731a<\/p>\n<p>7ec77e643d8d7cc18cc67c123feceed91d10db1cc9fa0c49164cba35bb1da987<\/p>\n<p>860f165c2240f2a83eb30c412755e5a025e25961ce4633683f5bc22f6a24ddb6<span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p>868ed69533fac80354a101410d3dd0a66f444385c6611cc85c5b0be49db2d6fd<\/p>\n<p>89759e56d5c23085e47d2be2ce4ad4484dfdd4204044a78671ed434cec19b693<\/p>\n<p>8b7fb1cd5c09f7ec57ccc0c4261c0b4df0604962556a1d401b9cbfd750df60ba<\/p>\n<p>8d6e31c95d649c08cdc2f82085298173d03c03afe02f0dacb66dd3560149184f<\/p>\n<p>942d763604d0aefdff10ce095f806195f351124a8433c96f5590d89d809a562f<\/p>\n<p>98a5f30699564e6d9f74e737a611246262907b9e91b90348f7de53eb4cf32665<\/p>\n<p>9e6011d6380207e2bf5105cde3d48e412db565b92cdc1b3c6aa15bd7bd4b099f<\/p>\n<p>a106e0a6b7cc30b161e5ea0b1ec0f28ab89c2e1eb7ba2d5d409ddbabc3b037e6<span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p>a2b905c26e2b92e63de85d83e280249258cb21f300d8c4a3a6bdb488676e9bcf<\/p>\n<p>a4a86e96f95f395fcf0ceb6a74a2564f4ba7adbe1b40cc702b054427327a0399<\/p>\n<p>a8192656dd1db0be4cec9d03b4d10e0529d9c52c899eda8d8e72698acfb61419<\/p>\n<p>a8f776bd3a9593e963b567ce790033fec2804ea0afb40a92d40e21d8f33d066f<\/p>\n<p>b4966f8febdba6b2d674afffc65b1df11e7565acbd4517f1e5b9b36a8c6a16ed<\/p>\n<p>bb25f1a73d095d57b2c8c9ac6780e4d412ddf3d9eef84a54903cc8e4eaefc335<\/p>\n<p>bc82bce004afb6424e9d9f9fc04a84f58edf859c4029eda08f7309dbeec67696<\/p>\n<p>c30198e0b0e470d4ac8821bd14bb754466e7974f1c20be8b300961e9e89ed1ea<span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p>caabc45e59820a4349db13f337063eddede8a0847ae313d89a800f241d8556c8<\/p>\n<p>d3ef6643ad529d43a7ec313b52c8396dc52c4daad688360eb207ee91a1caf7b2<\/p>\n<p>e3c818052237bb4bb061290ab5e2a55c3852c8a3fef16436b1197e8b17de2e18<\/p>\n<p>e56ffcf5df2afd6b151c24ddfe7cd450f9208f59b5731991b926af0dce24285a<\/p>\n<p>e8704bf6525c90e0f5664f400c3bf8ff5da565080a52126e0e6a62869157dfe3<\/p>\n<p>e8a454cd8b57a243f0abeec6945c9b10616cfdcc4abfb4c618bfc469d026d537<\/p>\n<p>eac776c3c83c9db1a770ffaf6df9e94611c8293cbd41cb9257148603b8f2be0b<\/p>\n<p>ead0f3e6f0ca16b283f09526d09e8e8cba687dab642f0e102e5487cb565bf475<span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p>f011a136996fa53fdbde944da0908da446b9532307a35c44ed08241b5e602cc9<\/p>\n<p>f2a2f4fa2ed5b2a94720a4661937da97ab21aa198a5f8c83bb6895aa2c398d22<\/p>\n<p>f62f21ee7e642f272b881827b45ceb643c999a742e1d3eac13d1ba014d1e7f67<\/p>\n<p>f9f0973dc74716b75291f5a9b2d59b08500882563011d1def2b8d0b1b9bbb8ae<\/p>\n<h3><span style=\"color: #000000;\">C2:<\/span><\/h3>\n<p><span data-ccp-props=\"{}\">\u00a0<\/span>theme[[.]]blogsite[.]org<\/p>\n<p>cortana[.]homelinux[.]com<\/p>\n<p>word[.]webhop[.]info<span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p>work[.]windownoffice[.]com<\/p>\n<p>cortanasyn[.]com<\/p>\n<p>e[.]browsersyn[.]com<\/p>\n<p>syn[.]servebbs[.]com<\/p>\n<p>service[.]windown-update[.]com<\/p>\n<p>check[.]homeip[.]net<\/p>\n<p>outlook[.]updateoffices[.]net<\/p>\n<p>mail[.]fptservice[.]net<span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<p>office[.]windown-update[.]com<\/p>\n<p>cortanazone[.]com<\/p>\n<p>beta[.]officopedia[.]com<\/p>\n<p>videos[.]dyndns[.]org<\/p>\n<p>service[.]serveftp[.]org<\/p>\n<p>syn[.]browserstime[.]com<\/p>\n<p>check[.]webhop[.]org<\/p>\n<p>ristineho[.]com<span data-ccp-props=\"{}\">\u00a0<\/span><\/p>\n<h2><span style=\"color: #000000;\">\u4ed8\u9332A:<\/span><\/h2>\n<p>Cobalt Strike Beacon\u306b\u306f\u3001\u30cf\u30fc\u30c9\u30b3\u30fc\u30c9\u3055\u308c\u305f\u69cb\u6210\u30c7\u30fc\u30bf\u304c\u672c\u6587\u306b\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002JPCERT\u304c\u3001\u69cb\u6210\u306e\u69cb\u9020\u306b\u3064\u3044\u3066\u8a18\u4e8b\u3092\u516c\u8868\u3057\u3066\u3044\u307e\u3059\u3002\u79c1\u305f\u3061\u304c\u53d6\u5f97\u3057\u305f\u30b5\u30f3\u30d7\u30eb\u306e\u69cb\u6210\u306f\u56f310\u306e\u3068\u304a\u308a\u3067\u3001https:\/\/\u00a0b.cortanazone[.]com\u3068\u3044\u3046C2\u30b5\u30fc\u30d0\u30fc\u306b\u63a5\u7d9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_96261\" aria-describedby=\"caption-attachment-96261\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-10-Cobalt-Strike-Beacon-configuration.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-96261 size-full lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-10-Cobalt-Strike-Beacon-configuration.png\" sizes=\"(max-width: 820px) 100vw, 820px\" srcset=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-10-Cobalt-Strike-Beacon-configuration.png 820w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-10-Cobalt-Strike-Beacon-configuration-300x264.png 300w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-10-Cobalt-Strike-Beacon-configuration-768x675.png 768w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-10-Cobalt-Strike-Beacon-configuration-370x325.png 370w\" alt=\"\u56f310:\u00a0Cobalt Strike Beacon\u306e\u69cb\u6210\" width=\"820\" height=\"721\" \/><\/a><figcaption id=\"caption-attachment-96261\" class=\"wp-caption-text\">\u56f310: Cobalt Strike Beacon\u306e\u69cb\u6210<\/figcaption><\/figure>\n<h2 style=\"text-align: left;\"><span style=\"color: #000000;\">\u4ed8\u9332B:<\/span><\/h2>\n<p>\u56f311\u306b\u3001\u500b\u5225\u306eRAR\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u306e\u4e00\u90e8\u3092\u793a\u3057\u307e\u3059\u3002\u3059\u3079\u3066\u306e.exe\u30d5\u30a1\u30a4\u30eb\u306f\u3001Windows Word\u306e\u30b3\u30d4\u30fc\u3067\u3001\u95a2\u9023\u3057\u305f\u300cwwlib.dll\u300d\u30d5\u30a1\u30a4\u30eb\u306f\u60aa\u610f\u306e\u3042\u308b\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u30fcDLL\u00a0KerrDown\u3067\u3042\u308a\u3001\u3053\u308c\u306f.exe\u30d5\u30a1\u30a4\u30eb\u304c\u5b9f\u884c\u3055\u308c\u308b\u3068\u30b5\u30a4\u30c9\u30ed\u30fc\u30c7\u30a3\u30f3\u30b0\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_96262\" aria-describedby=\"caption-attachment-96262\" style=\"width: 822px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-11-RAR-archives-with-malicious-DLL-for-sideloading.png\" rel=\"wpdevart_lightbox\"><img  class=\"wp-image-96262 size-large lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-11-RAR-archives-with-malicious-DLL-for-sideloading-822x1024.png\" sizes=\"(max-width: 980px) 100vw, 980px\" srcset=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-11-RAR-archives-with-malicious-DLL-for-sideloading.png 980w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-11-RAR-archives-with-malicious-DLL-for-sideloading-241x300.png 241w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-11-RAR-archives-with-malicious-DLL-for-sideloading-768x957.png 768w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-11-RAR-archives-with-malicious-DLL-for-sideloading-822x1024.png 822w, https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/01\/Figure-11-RAR-archives-with-malicious-DLL-for-sideloading-874x1089.png 874w, 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\u201cKerrDown\u201d\u00a0which\u00a0OceanLotus\u00a0have been actively using since at least\u00a0early\u00a02018.<\/p>\n","protected":false},"author":260,"featured_media":99566,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[4322,1974,4431,4428],"tags":[6789,6790],"product_categories":[],"coauthors":[176,473],"class_list":["post-99632","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-threat-actor-groups","category-malware-ja","category-threat-actor-groups-ja","category-threat-research-ja","tag-kerrdown-ja","tag-oceanlotus"],"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>OceanLotus\u306e\u65b0\u3057\u3044\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u30fcKerrDown\u306e\u8ffd\u8de1<\/title>\n<meta name=\"description\" content=\"OceanLotus (APT32)\u306f\u6771\u5357\u30a2\u30b8\u30a2\u767a\u7965\u306e\u8105\u5a01\u653b\u6483\u8005\u30b0\u30eb\u30fc\u30d7\u3067\u3001\u30d9\u30c8\u30ca\u30e0\u95a2\u9023\u306e\u8907\u6570\u306e\u696d\u754c\u3001\u5916\u56fd\u653f\u5e9c\u3001\u6d3b\u52d5\u5bb6\u3001\u53cd\u4f53\u5236\u6d3e\u306a\u3069\u3092\u6a19\u7684\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u672c\u7a3f\u3067\u306f\u540c\u30b0\u30eb\u30fc\u30d7\u306e\u4f7f\u3046\u30ab\u30b9\u30bf\u30e0\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0KerrDown\u3084\u65b0\u3057\u3044KerrDown\u30de\u30eb\u30a6\u30a7\u30a2 \u30d5\u30a1\u30df\u30ea\u9593\u306e\u985e\u4f3c\u6027\u306e\u78ba\u8a8d\u65b9\u6cd5\u3092\u8aac\u660e\u3057\u307e\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\/tracking-oceanlotus-new-downloader-kerrdown\/\" \/>\n<meta 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property=\"og:url\" content=\"https:\/\/unit42.paloaltonetworks.com\/ja\/tracking-oceanlotus-new-downloader-kerrdown\/\" \/>\n<meta property=\"og:site_name\" content=\"Unit 42\" \/>\n<meta property=\"article:published_time\" content=\"2019-01-23T14:00:01+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-10-04T09:14:05+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2019\/10\/unit42-blog-600x300.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"300\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Vicky Ray, Kaoru Hayashi\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"OceanLotus\u306e\u65b0\u3057\u3044\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u30fcKerrDown\u306e\u8ffd\u8de1\" \/>\n<meta name=\"twitter:description\" 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