{"id":135322,"date":"2024-07-01T18:44:48","date_gmt":"2024-07-02T01:44:48","guid":{"rendered":"https:\/\/unit42.paloaltonetworks.com\/?p=135322"},"modified":"2024-07-03T17:24:58","modified_gmt":"2024-07-04T00:24:58","slug":"attackers-exploit-public-cobalt-strike-profiles","status":"publish","type":"post","link":"https:\/\/origin-unit42.paloaltonetworks.com\/ja\/attackers-exploit-public-cobalt-strike-profiles\/","title":{"rendered":"\u516c\u958b\u3055\u308c\u305f Cobalt Strike Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u60aa\u7528\u30fb\u56de\u907f\u624b\u53e3\u306e\u8abf\u67fb"},"content":{"rendered":"<h2>\u6982\u8981<\/h2>\n<p>\u672c\u7a3f\u306f\u3001\u60aa\u610f\u306e\u3042\u308b Cobalt Strike \u30a4\u30f3\u30d5\u30e9\u306b\u95a2\u3059\u308b\u6700\u8fd1\u306e\u8abf\u67fb\u7d50\u679c\u3092 Unit 42 \u306e\u30ea\u30b5\u30fc\u30c1\u30e3\u30fc\u304c\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u60aa\u8cea\u306a Cobalt Strike \u30b5\u30f3\u30d7\u30eb\u3082\u3044\u304f\u3064\u304b\u5171\u6709\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30b5\u30f3\u30d7\u30eb\u306f\u3001\u3042\u308b\u516c\u958b\u3055\u308c\u305f\u30b3\u30fc\u30c9 \u30ea\u30dd\u30b8\u30c8\u30ea\u30fc\u306b\u30db\u30b9\u30c8\u3055\u308c\u3066\u3044\u305f\u5358\u4e00\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u751f\u6210\u3057\u305f Malleable C2 \u69cb\u6210\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u4f7f\u3063\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>Cobalt Strike \u306f\u5546\u7528\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2 \u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306e 1 \u3064\u3067\u3059\u3002\u3053\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u4f7f\u3063\u3066\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5c02\u9580\u5bb6 (\u30ec\u30c3\u30c9 \u30c1\u30fc\u30e0\u306e\u30e1\u30f3\u30d0\u30fc\u306a\u3069) \u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u74b0\u5883\u306b\u6f5c\u3080\u653b\u6483\u8005\u3092\u30b7\u30df\u30e5\u30ec\u30fc\u30c8\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u5b9f\u4e16\u754c\u306e\u653b\u6483\u3067\u306f\u8105\u5a01\u30a2\u30af\u30bf\u30fc\u3089\u304c\u30af\u30e9\u30c3\u30af\u7248\u306e Cobalt Strike \u3092\u4f7f\u3044\u7d9a\u3051\u3066\u3044\u307e\u3059\u3002Beacon \u3068\u547c\u3070\u308c\u308b\u30dd\u30b9\u30c8 \u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8 \u30da\u30a4\u30ed\u30fc\u30c9\u306f\u3001Malleable C2 \u3068\u547c\u3070\u308c\u308b\u30c6\u30ad\u30b9\u30c8\u30d9\u30fc\u30b9\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u4f7f\u3063\u3066\u3001Beacon \u306e Web \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u7279\u6027\u3092\u5909\u5316\u3055\u305b\u308b\u3053\u3068\u3067\u691c\u51fa\u3092\u9003\u308c\u3088\u3046\u3068\u3057\u307e\u3059\u3002<\/p>\n<p>Cobalt Strike \u306f\u9632\u5fa1\u7684\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8a55\u4fa1\u306b\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u4e00\u65b9\u3067\u306f\u8105\u5a01\u30a2\u30af\u30bf\u30fc\u306e\u60aa\u8cea\u306a\u76ee\u7684\u306b\u3082\u4f7f\u308f\u308c\u7d9a\u3051\u3066\u3044\u307e\u3059\u3002Cobalt Strike \u306f\u3001\u305d\u306e\u67d4\u8edf\u6027\u3068\u56de\u907f\u6027\u306b\u3088\u308a\u3001\u7d44\u7e54\u306b\u3068\u3063\u3066\u4f9d\u7136\u3068\u3057\u3066\u91cd\u5927\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u8105\u5a01\u3068\u306a\u3063\u3066\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\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067 Cobalt Strike Beacon \u304a\u3088\u3073 Team Server C2 \u901a\u4fe1\u304b\u3089\u3088\u308a\u5f37\u529b\u306b\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/docs.paloaltonetworks.com\/pan-os\/10-2\/pan-os-admin\/threat-prevention\/about-threat-prevention\/advanced-threat-prevention\" target=\"_blank\" rel=\"noopener\">Advanced Threat Prevention<\/a> \u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u3092\u6709\u52b9\u306b\u3057\u305f\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb (<a href=\"https:\/\/docs.paloaltonetworks.com\/ngfw\" target=\"_blank\" rel=\"noopener\">NGFW<\/a>) \u306f\u3001\u30ab\u30b9\u30bf\u30e0 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u304c\u751f\u6210\u3057\u305f Cobalt Strike \u306e HTTP C2 \u30ea\u30af\u30a8\u30b9\u30c8\u306e\u8b58\u5225\u30fb\u30d6\u30ed\u30c3\u30af\u3092\u652f\u63f4\u3057\u3001HTTP C2 \u30ea\u30af\u30a8\u30b9\u30c8\u3092\u30d6\u30ed\u30c3\u30af\u3057\u307e\u3059\u3002<\/li>\n<li><a href=\"https:\/\/docs.paloaltonetworks.com\/wildfire\">Advanced WildFire<\/a>\u3001<a href=\"https:\/\/docs-cortex.paloaltonetworks.com\/p\/XDR\" target=\"_blank\" rel=\"noopener\">Cortex XDR<\/a>\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/prisma\/cloud\" target=\"_blank\" rel=\"noopener\">Prisma Cloud<\/a> \u306f\u3001Cobalt Strike Beacon \u306e\u30d0\u30a4\u30ca\u30ea\u30fc\u306e\u8b58\u5225\u30fb\u30d6\u30ed\u30c3\u30af\u3092\u652f\u63f4\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001XDR \u306f\u95a2\u9023\u3059\u308b\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8a66\u884c\u3092\u5831\u544a\u3057\u307e\u3059\u3002<\/li>\n<li><a href=\"https:\/\/xsoar.pan.dev\/docs\/reference\/playbooks\/mitre-attck-co-a---t1041---exfiltration-over-c2-channel\" target=\"_blank\" rel=\"noopener\">Cortex XSOAR \u306e\u30ec\u30b9\u30dd\u30f3\u30b9 \u30d1\u30c3\u30af\u3068\u30d7\u30ec\u30a4\u30d6\u30c3\u30af<\/a>\u306f\u7de9\u548c\u5bfe\u7b56\u30d7\u30ed\u30bb\u30b9\u306e\u81ea\u52d5\u5316\u3092\u652f\u63f4\u3057\u307e\u3059\u3002<\/li>\n<li><a href=\"https:\/\/docs.paloaltonetworks.com\/advanced-url-filtering\/administration\" target=\"_blank\" rel=\"noopener\">Advanced URL Filtering<\/a> \u306b\u306f\u3001\u672c\u7a3f\u3068\u95a2\u9023\u3059\u308b\u60aa\u610f\u306e\u3042\u308b URL \u3068 IP \u30a2\u30c9\u30ec\u30b9\u3092\u8ffd\u52a0\u6e08\u307f\u3067\u3059\u3002<\/li>\n<\/ul>\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=\"https:\/\/start.paloaltonetworks.jp\/contact-unit42.html\" target=\"_blank\" rel=\"noopener\">\u3053\u3061\u3089<\/a>\u306e\u554f\u3044\u5408\u308f\u305b\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u3054\u9023\u7d61\u3044\u305f\u3060\u304f\u304b\u3001infojapan@paloaltonetworks.com \u307e\u3067\u96fb\u5b50\u30e1\u30fc\u30eb\u306b\u3066\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044 (\u3054\u76f8\u8ac7\u306f\u5f0a\u793e\u88fd\u54c1\u306e\u304a\u5ba2\u3055\u307e\u306b\u306f\u9650\u5b9a\u3055\u308c\u307e\u305b\u3093)\u3002<\/p>\n<table style=\"width: 100%;\">\n<thead>\n<tr>\n<td style=\"width: 35%;\"><b>\u95a2\u9023\u3059\u308b Unit 42 \u306e\u30c8\u30d4\u30c3\u30af<\/b><\/td>\n<td style=\"width: 100%;\"><a href=\"https:\/\/unit42.paloaltonetworks.jp\/tag\/cobalt-strike-ja\/\" target=\"_blank\" rel=\"noopener\"><b>Cobalt Strike<\/b><\/a>, <strong><a href=\"https:\/\/unit42.paloaltonetworks.jp\/tag\/malleable-c2-profile-ja\/\" target=\"_blank\" rel=\"noopener\">Malleable C2 Profile<\/a><\/strong><\/td>\n<\/tr>\n<\/thead>\n<\/table>\n<h2><a id=\"post-135322-_ozouebyefl15\"><\/a><strong>\u30b5\u30fc\u30d0\u30fc\u304b\u3089 Beacon\u3001\u305d\u3057\u3066\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3078<\/strong><\/h2>\n<p>Unit 42 \u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306b\u30db\u30b9\u30c8\u3055\u308c\u3066\u3044\u308b Cobalt Strike \u30b5\u30fc\u30d0\u30fc\u3092\u691c\u51fa\u3059\u308b\u305f\u3081\u306e\u8907\u6570\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u6301\u3063\u3066\u304a\u308a\u3001\u305d\u306e\u3046\u3061\u306e\u3044\u304f\u3064\u304b\u306f <a href=\"https:\/\/unit42.paloaltonetworks.jp\/cobalt-strike-team-server\/\" target=\"_blank\" rel=\"noopener\">Cobalt Strike \u5206\u6790\u306b\u95a2\u3059\u308b\u4ee5\u524d\u306e\u8a18\u4e8b<\/a>\u306b\u307e\u3068\u3081\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u672c\u7a3f\u3067\u53d6\u308a\u4e0a\u3052\u305f\u30c8\u30e9\u30d5\u30a3\u30c3\u30af \u30d5\u30ed\u30fc\u3068\u691c\u51fa\u306f\u3001\u5f0a\u793e\u306e\u9ad8\u5ea6\u306a\u8105\u5a01\u4fdd\u8b77\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3 (ATP) \u3067\u3042\u308b <a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/advanced-threat-prevention\" target=\"_blank\" rel=\"noopener\">Advanced Threat Prevention<\/a> \u304c\u30c8\u30ea\u30ac\u30fc\u3057\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>\u3053\u308c\u3089\u306e Cobalt Strike \u30b5\u30fc\u30d0\u30fc\u3092\u767a\u898b\u5f8c\u3001\u79c1\u305f\u3061\u306f\u3053\u306e\u60c5\u5831\u3092\u3082\u3068\u306b\u95a2\u9023 Beacon \u30d5\u30a1\u30a4\u30eb\u3092\u691c\u51fa\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u306e\u30b5\u30f3\u30d7\u30eb\u306e\u8abf\u67fb\u306b\u3088\u308a\u3001\u4ee5\u524d <a href=\"https:\/\/unit42.paloaltonetworks.jp\/cobalt-strike-malleable-c2-profile\/\" target=\"_blank\" rel=\"noopener\">Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306b\u95a2\u3059\u308b\u5225\u7a3f<\/a>\u3067\u89e3\u8aac\u3057\u305f Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u304c\u660e\u3089\u304b\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>\u79c1\u305f\u3061\u306e\u8abf\u67fb\u306b\u3088\u308a\u3001\u3053\u308c\u3089\u306e Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306f\u3001\u67d0\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2 \u30ea\u30dd\u30b8\u30c8\u30ea\u30fc\u306b\u516c\u958b\u3067\u30db\u30b9\u30c8\u3055\u308c\u3066\u3044\u308b\u5358\u4e00\u306e\u30b5\u30f3\u30d7\u30eb\u3092\u307b\u3068\u3093\u3069\u6d41\u7528\u3057\u3066\u3044\u308b\u3053\u3068\u3082\u660e\u3089\u304b\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<h2><a id=\"post-135322-_9x6s2q9dvukl\"><\/a><strong>\u6700\u521d\u306e\u30b5\u30f3\u30d7\u30eb<\/strong><\/h2>\n<p>\u6700\u521d\u306e Beacon \u30b5\u30f3\u30d7\u30eb\u306f <a href=\"https:\/\/github.com\/rsmudge\/Malleable-C2-Profiles\/blob\/master\/normal\/ocsp.profile\" target=\"_blank\" rel=\"noopener\"><span style=\"font-family: 'courier new', courier, monospace;\">ocsp.profile<\/span><\/a> \u3068\u3044\u3046\u540d\u524d\u306e Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u6d41\u7528\u3057\u305f\u3082\u306e\u3067\u3057\u305f\u3002\u3053\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306f\u3042\u308b\u516c\u958b\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2 \u30ea\u30dd\u30b8\u30c8\u30ea\u306b\u30db\u30b9\u30c8\u3055\u308c\u3066\u3044\u305f\u3082\u306e\u3067\u3059\u3002\u3053\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u81ea\u4f53\u306b\u306f\u60aa\u610f\u306f\u306a\u304f\u3001\u516c\u958b\u30ea\u30dd\u30b8\u30c8\u30ea\u306b\u30db\u30b9\u30c8\u3055\u308c\u305f\u6570\u591a\u3042\u308b\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u3072\u3068\u3064\u306b\u904e\u304e\u307e\u305b\u3093\u304c\u3001\u653b\u6483\u8005\u3089\u306f\u305d\u3046\u3057\u305f\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u60aa\u610f\u306e\u3042\u308b\u76ee\u7684\u3067\u30b3\u30d4\u30fc\u3057\u3001\u6539\u5909\u3057\u307e\u3059\u3002<\/p>\n<p>\u6700\u521d\u306e\u30b5\u30f3\u30d7\u30eb\u306e SHA256 \u30cf\u30c3\u30b7\u30e5:<\/p>\n<ul>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">1980becd2152f4c29dffbb9dc113524a78f8246d3ba57384caf1738142bb3a07<\/span><\/li>\n<\/ul>\n<p>\u3053\u306e Beacon \u30b5\u30f3\u30d7\u30eb\u306f\u3001\u5f0a\u793e\u306e ATP \u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u304c\u691c\u51fa\u3057\u305f Cobalt Strike \u30b5\u30fc\u30d0\u30fc\u306e 1 \u3064\u304b\u3089\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u653b\u6483\u8005\u306f\u901a\u5e38\u3001Cobalt Strike \u30b5\u30fc\u30d0\u30fc\u304b\u3089 Beacon \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u53d6\u5f97\u3057\u3001\u4fb5\u5bb3\u3057\u305f\u5225\u306e\u30d7\u30ed\u30bb\u30b9\u7d4c\u7531\u3067 Beacon \u3092\u30e1\u30e2\u30ea\u30fc\u306b\u30ed\u30fc\u30c9\u3057\u307e\u3059\u3002\u3053\u306e Beacon \u30d0\u30a4\u30ca\u30ea\u30fc\u306b\u306f\u3001Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u8a73\u7d30\u304c\u57cb\u3081\u8fbc\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u3053\u3067\u306f\u3001Didier Stevens \u6c0f\u306e Python \u30b9\u30af\u30ea\u30d7\u30c8 <a href=\"https:\/\/github.com\/DidierStevens\/DidierStevensSuite\/blob\/master\/1768.py\" target=\"_blank\" rel=\"noopener\"><span style=\"font-family: 'courier new', courier, monospace;\">1768.py<\/span><\/a> \u3092\u4f7f\u3063\u3066 Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u8a73\u7d30\u3092\u62bd\u51fa\u3057\u307e\u3059\u3002\u305d\u306e\u8a73\u7d30\u3092\u4ee5\u4e0b\u306e\u8868 1 \u306b\u307e\u3068\u3081\u307e\u3059\u3002<\/p>\n<table style=\"width: 100%;\">\n<tbody>\n<tr>\n<td style=\"text-align: center;\"><b>\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u8aac\u660e<\/b><\/td>\n<td style=\"text-align: center;\"><b>\u8a73\u7d30<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u5b9f\u884c\u5bfe\u8c61\u30b3\u30de\u30f3\u30c9\u3092\u53d6\u5f97\u3059\u308b GET \u30ea\u30af\u30a8\u30b9\u30c8<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u30e1\u30bd\u30c3\u30c9: <\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">GET<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Cobalt Strike C2 \u30c9\u30e1\u30a4\u30f3:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">msupdate.azurefd[.]net<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">o365updater.azureedge[.]net<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">gupdater.bbtecno[.]com<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">teamsupd.azurewebsites[.]net<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">msdn1357.centralus.cloudapp.azure[.]com<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">cupdater.bbtecno[.]com<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">URI: <\/span><span style=\"font-weight: 400;\">\u00a0<span style=\"font-family: 'courier new', courier, monospace;\">\/ocsp\/<\/span><\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u30d8\u30c3\u30c0\u30fc: <\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">User-Agent: Microsoft-CryptoAPI\/7.0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u30b3\u30de\u30f3\u30c9\u5b9f\u884c\u7d50\u679c\u3092\u8fd4\u3059 POST \u30ea\u30af\u30a8\u30b9\u30c8<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u30e1\u30bd\u30c3\u30c9: <\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">POST<\/span><\/p>\n<p><span style=\"font-weight: 400;\">URI: <\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">\/ocsp\/a\/<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: left;\"><span style=\"font-size: 12pt; color: #333333;\">\u8868 1. \u6700\u521d\u306e Beacon \u30b5\u30f3\u30d7\u30eb\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u62bd\u51fa\u3057\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u60c5\u5831<\/span><\/p>\n<p>\u4ee5\u4e0b\u306e\u56f3 1 \u306f\u3001Didier Stevens \u6c0f\u306e Python \u30b9\u30af\u30ea\u30d7\u30c8\u3067\u6700\u521d\u306e Beacon \u30b5\u30f3\u30d7\u30eb\u3092\u5206\u6790\u3057\u305f\u7d50\u679c\u306e\u4e00\u90e8\u3092\u793a\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u306b\u306f\u3001\u30b5\u30f3\u30d7\u30eb\u306e Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u69cb\u6210\u306b\u95a2\u9023\u3059\u308b\u60c5\u5831\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<span style=\"font-family: 'courier new', courier, monospace;\">http_get_header<\/span> \u306e\u30bb\u30af\u30b7\u30e7\u30f3\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u901a\u308a\u3001\u88ab\u5bb3\u8005\u306e\u30e1\u30bf\u30c7\u30fc\u30bf\u306b\u306f\u5c0f\u6587\u5b57\u306e <a href=\"https:\/\/unit42.paloaltonetworks.jp\/cobalt-strike-metadata-encoding-decoding\/#NetBIOS-Encoding-and-Decoding\" target=\"_blank\" rel=\"noopener\">NetBIOS<\/a> \u30a8\u30f3\u30b3\u30fc\u30c9\u304c\u4f7f\u308f\u308c\u3001\u30ea\u30af\u30a8\u30b9\u30c8 URI \u306b\u30a2\u30da\u30f3\u30c9\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u69cb\u6210\u3067\u306f <span style=\"font-family: 'courier new', courier, monospace;\">Accept: *<em>\/*<\/em><\/span> \u3082 HTTP GET \u30ea\u30af\u30a8\u30b9\u30c8 \u30d8\u30c3\u30c0\u30fc\u306b\u8ffd\u52a0\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_135251\" aria-describedby=\"caption-attachment-135251\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-135251 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-461608-135250-1.png\" alt=\"\u753b\u50cf 1 \u306f Python \u30b9\u30af\u30ea\u30d7\u30c8\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u3067\u3059\u3002\u8d64\u3044\u77e2\u5370\u306f\u30d8\u30c3\u30c0\u30fc \u30bb\u30af\u30b7\u30e7\u30f3\u3092\u6307\u3057\u3066\u3044\u307e\u3059\u3002 \" width=\"800\" height=\"448\" srcset=\"https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-461608-135250-1.png 2048w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-461608-135250-1-786x440.png 786w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-461608-135250-1-1249x700.png 1249w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-461608-135250-1-768x431.png 768w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-461608-135250-1-1536x861.png 1536w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-135251\" class=\"wp-caption-text\">\u56f3 1. \u6700\u521d\u306e Beacon \u30b5\u30f3\u30d7\u30eb\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u306b Didier Stevens \u6c0f\u306e <span style=\"font-family: 'courier new', courier, monospace;\">1768.py<\/span> \u30b9\u30af\u30ea\u30d7\u30c8\u3092\u5b9f\u884c\u3057\u305f\u3055\u3044\u306e\u51fa\u529b\u5185\u5bb9<\/figcaption><\/figure>\n<p>\u56f3 2 \u306f\u3001\u3053\u306e Beacon \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3068 Cobalt Strike \u30b5\u30fc\u30d0\u30fc\u9593\u306e HTTP C2 \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e TCP \u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u793a\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u3053\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u304b\u3089\u306f\u3001Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u304c\u6307\u5b9a\u3057\u3066\u3044\u305f\u901a\u308a\u3001GET \u30ea\u30af\u30a8\u30b9\u30c8\u5185\u306b\u5c0f\u6587\u5b57\u306e NetBIOS \u30a8\u30f3\u30b3\u30fc\u30c9\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_135253\" aria-describedby=\"caption-attachment-135253\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-135253 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-465734-135250-2.png\" alt=\"\u753b\u50cf 2 \u306f\u3001Wireshark TCP \u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u3067\u3001\u30b3\u30de\u30f3\u30c9 &amp; \u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306b\u306f GET \u30ea\u30af\u30a8\u30b9\u30c8\u3001Host (\u3053\u308c\u306b\u3064\u3044\u3066\u306f\u5272\u611b\u3057\u3066\u3042\u308a\u307e\u3059)\u3001Connection\u3001User-Agent \u60c5\u5831\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002 \" width=\"700\" height=\"314\" srcset=\"https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-465734-135250-2.png 2048w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-465734-135250-2-786x353.png 786w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-465734-135250-2-1558x700.png 1558w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-465734-135250-2-768x345.png 768w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-465734-135250-2-1536x690.png 1536w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption id=\"caption-attachment-135253\" class=\"wp-caption-text\">\u56f3 2. \u6700\u521d\u306e Cobalt Strike Beacon \u30b5\u30f3\u30d7\u30eb\u304c\u751f\u6210\u3057\u305f HTTP C2 \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092 TCP \u30b9\u30c8\u30ea\u30fc\u30e0\u3068\u3057\u3066\u78ba\u8a8d\u3057\u305f\u3068\u3053\u308d<\/figcaption><\/figure>\n<p>\u3053\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u69cb\u6210\u306f\u3001\u8ab0\u3067\u3082\u30a2\u30af\u30bb\u30b9\u53ef\u80fd\u306a\u516c\u958b\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2 \u30ea\u30dd\u30b8\u30c8\u30ea\u30fc\u4e0a\u306b\u3042\u308b <span style=\"font-family: 'courier new', courier, monospace;\"><a href=\"https:\/\/github.com\/rsmudge\/Malleable-C2-Profiles\/blob\/master\/normal\/ocsp.profile\" target=\"_blank\" rel=\"noopener\">ocsp.profile<\/a><\/span> \u3068\u3044\u3046\u540d\u524d\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u3082\u3068\u306b\u3057\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002\u3053\u306e\u653b\u6483\u8005\u306f\u5358\u306b\u3001\u4e21\u65b9\u306e HTTP \u30ea\u30af\u30a8\u30b9\u30c8 \u30e1\u30bd\u30c3\u30c9\u306b\u3064\u3044\u3066 <span style=\"font-family: 'courier new', courier, monospace;\">\/oscp\/<\/span> \u3092 <span style=\"font-family: 'courier new', courier, monospace;\">\/ocsp\/<\/span> \u306b\u7f6e\u63db\u3057\u3001<span style=\"font-family: 'courier new', courier, monospace;\">User-Agent<\/span> \u6587\u5b57\u5217\u306e <span style=\"font-family: 'courier new', courier, monospace;\">Microsoft-CryptoAPI\/6.1<\/span> \u3092 <span style=\"font-family: 'courier new', courier, monospace;\">Microsoft-CryptoAPI\/7.0<\/span> \u306b\u5909\u66f4\u3057\u3066\u3044\u307e\u3057\u305f\u3002\u56f3 3 \u306f\u3001\u5143\u306e Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u3053\u306e Beacon \u30b5\u30f3\u30d7\u30eb\u3067\u5909\u66f4\u3055\u308c\u305f\u5024\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u3067\u4f7f\u7528\u3055\u308c\u305f\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u6b8b\u308a\u306e\u90e8\u5206\u306f\u3001\u3082\u3068\u306b\u306a\u3063\u305f <span style=\"font-family: 'courier new', courier, monospace;\">ocsp.profile<\/span> \u306e\u5185\u5bb9\u3068\u4e00\u81f4\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_135255\" aria-describedby=\"caption-attachment-135255\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-135255 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-470099-135250-3.png\" alt=\"\u753b\u50cf 3 \u306f\u3001\u30e6\u30fc\u30b6\u30fc rsmudge \u306e Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e GitHub \u30da\u30fc\u30b8\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u3067\u3059\u3002 \" width=\"800\" height=\"682\" srcset=\"https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-470099-135250-3.png 1776w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-470099-135250-3-516x440.png 516w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-470099-135250-3-821x700.png 821w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-470099-135250-3-768x655.png 768w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-470099-135250-3-1536x1309.png 1536w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-135255\" class=\"wp-caption-text\">\u56f3 3. \u30aa\u30ea\u30b8\u30ca\u30eb\u306e <span style=\"font-family: 'courier new', courier, monospace;\">ocsp.profile<\/span> \u306b\u6700\u521d\u306e Beacon \u306e\u30b5\u30f3\u30d7\u30eb\u3067\u66f4\u65b0\u3055\u308c\u3066\u3044\u305f\u5024\u3092\u8868\u793a\u3057\u305f\u3068\u3053\u308d<\/figcaption><\/figure>\n<h2><a id=\"post-135322-_g9ixmvrkbwqb\"><\/a><strong>2 \u756a\u76ee\u306e\u30b5\u30f3\u30d7\u30eb<\/strong><\/h2>\n<p>2 \u756a\u76ee\u306e Beacon \u30b5\u30f3\u30d7\u30eb\u306e Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306f\u3001\u6700\u521d\u306e\u30b5\u30f3\u30d7\u30eb\u3068\u540c\u3058<a href=\"https:\/\/github.com\/rsmudge\/Malleable-C2-Profiles\/blob\/master\/normal\/ocsp.profile\" target=\"_blank\" rel=\"noopener\"><span style=\"font-family: 'courier new', courier, monospace;\">ocsp.profile<\/span><\/a>\u304b\u3089\u501f\u7528\u3055\u308c\u305f\u3082\u306e\u3067\u3057\u305f\u3002<\/p>\n<p>2 \u756a\u76ee\u306e\u30b5\u30f3\u30d7\u30eb\u306e SHA256 \u30cf\u30c3\u30b7\u30e5:<\/p>\n<ul>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">b587e215ce8c0b3a1525f136fe38bfdc0232300e1a4f7e651e5dc6e86313e941<\/span><\/li>\n<\/ul>\n<p>\u6700\u521d\u306e\u30b5\u30f3\u30d7\u30eb\u3068\u540c\u3058\u304f\u3001\u3053\u308c\u3082\u3042\u308b Cobalt Strike \u30b5\u30fc\u30d0\u30fc\u304c\u30db\u30b9\u30c8\u3057\u3066\u3044\u305f\u30b9\u30c6\u30fc\u30b8\u30f3\u30b0\u6e08\u307f\u30d0\u30a4\u30ca\u30ea\u30fc\u3067\u3059\u3002\u3053\u306e Beacon \u30b5\u30f3\u30d7\u30eb\u3082\u3001\u5f0a\u793e\u306e ATP \u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u304c\u691c\u51fa\u3057\u3066\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305f\u3082\u306e\u3067\u3059\u3002\u540c\u69d8\u306e\u5206\u6790\u624b\u9806\u306b\u5f93\u3044\u3001<span style=\"font-family: 'courier new', courier, monospace;\"><a href=\"https:\/\/github.com\/DidierStevens\/DidierStevensSuite\/blob\/master\/1768.py\" target=\"_blank\" rel=\"noopener\">1768.py<\/a><\/span> \u3067 Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u60c5\u5831\u3092\u62bd\u51fa\u3057\u3001\u305d\u306e\u7d50\u679c\u3092\u65e2\u77e5\u306e\u30ea\u30dd\u30b8\u30c8\u30ea\u30fc\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3068\u6bd4\u8f03\u3057\u307e\u3057\u305f\u3002\u8868 2 \u306f\u3001\u3053\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u62bd\u51fa\u3057\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u60c5\u5831\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<table>\n<tbody>\n<tr>\n<td style=\"text-align: center;\"><b>\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb \u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u8aac\u660e<\/b><\/td>\n<td style=\"text-align: center;\"><b>\u8a73\u7d30<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">C2:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u5b9f\u884c\u5bfe\u8c61\u30b3\u30de\u30f3\u30c9\u3092\u53d6\u5f97\u3059\u308b GET \u30ea\u30af\u30a8\u30b9\u30c8<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u30e1\u30bd\u30c3\u30c9: <\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">GET<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Cobalt Strike C2 \u30c9\u30e1\u30a4\u30f3:\u00a0\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">msupdate.brazilsouth.cloudapp.azure[.]com<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">msdn1357.centralus.cloudapp.azure[.]com<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">update37.eastus.cloudapp.azure[.]com<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">update.westus.cloudapp.azure[.]com<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">146.235.52[.]69<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">159.112.177[.]137<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">URI: <\/span><span style=\"font-family: 'courier new', courier, monospace;\"><span style=\"font-weight: 400;\">\/download\/<\/span><\/span><\/p>\n<p><span style=\"font-weight: 400;\">Header: <\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">User-Agent: Microsoft-CryptoAPI\/8.1<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">C2:\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u30b3\u30de\u30f3\u30c9\u5b9f\u884c\u7d50\u679c\u3092\u8fd4\u3059 POST \u30ea\u30af\u30a8\u30b9\u30c8<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u30e1\u30bd\u30c3\u30c9: <\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">POST<\/span><\/p>\n<p><span style=\"font-weight: 400;\">URI: <\/span><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">\/pkg\/a\/<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: left;\"><span style=\"font-size: 12pt; color: #333333;\">\u8868 2. 2 \u756a\u76ee\u306e Beacon \u30b5\u30f3\u30d7\u30eb\u306e\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u62bd\u51fa\u3057\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u60c5\u5831<\/span><\/p>\n<p>\u3053\u306e Beacon \u306e\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u653b\u6483\u8005\u304c URI \u30d1\u30b9\u3092\u66f4\u65b0\u3057\u3066\u3044\u3066\u3001\u30aa\u30ea\u30b8\u30ca\u30eb\u306e <span style=\"font-family: 'courier new', courier, monospace;\">ocsp.profile<\/span> \u306e HTTP GET \u30ea\u30af\u30a8\u30b9\u30c8\u306e\u5024\u306f <span style=\"font-family: 'courier new', courier, monospace;\">\/oscp\/<\/span> \u304b\u3089 <span style=\"font-family: 'courier new', courier, monospace;\">\/download\/<\/span> \u306b\u7f6e\u63db\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002\u3053\u306e\u307b\u304b\u3001HTTP POST \u30ea\u30af\u30a8\u30b9\u30c8\u306e\u5143\u306e\u5024\u3082 <span style=\"font-family: 'courier new', courier, monospace;\">\/oscp\/a\/<\/span> \u304b\u3089 <span style=\"font-family: 'courier new', courier, monospace;\">\/pkg\/a\/<\/span> \u306b\u7f6e\u304d\u63db\u308f\u3063\u3066\u3044\u307e\u3057\u305f\u3002\u6700\u5f8c\u306b\u3001\u653b\u6483\u8005\u306f <span style=\"font-family: 'courier new', courier, monospace;\">User-Agent<\/span> \u306e\u5024\u3092 <span style=\"font-family: 'courier new', courier, monospace;\">Microsoft-CryptoAPI\/6.1<\/span> \u304b\u3089 <span style=\"font-family: 'courier new', courier, monospace;\">Microsoft-CryptoAPI\/8.1<\/span> \u306b\u66f4\u65b0\u3057\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>\u56f3 4 \u306f\u30012 \u756a\u76ee\u306e Beacon \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3068 Cobalt Strike \u30b5\u30fc\u30d0\u30fc\u9593\u306e HTTP C2 \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e TCP \u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u793a\u3057\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_135257\" aria-describedby=\"caption-attachment-135257\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-135257 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-473911-135250-4.png\" alt=\"\u753b\u50cf 4 \u306f\u3001Wireshark TCP \u30b9\u30c8\u30ea\u30fc\u30e0 \u30a6\u30a3\u30f3\u30c9\u30a6\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u3067\u3059\u3002\u30db\u30b9\u30c8\u540d\u306f\u4f0f\u305b\u3066\u3042\u308a\u307e\u307e\u3059\u3002GET \u30ea\u30af\u30a8\u30b9\u30c8\u3001Host (\u3053\u308c\u306b\u3064\u3044\u3066\u306f\u5272\u611b\u3057\u3066\u3042\u308a\u307e\u3059)\u3001Connection\u3001User-Agent \u60c5\u5831\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002 \" width=\"600\" height=\"249\" srcset=\"https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-473911-135250-4.png 2048w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-473911-135250-4-786x327.png 786w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-473911-135250-4-1685x700.png 1685w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-473911-135250-4-768x319.png 768w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-473911-135250-4-1536x638.png 1536w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-135257\" class=\"wp-caption-text\">\u56f3 4. 2 \u756a\u76ee\u306e Cobalt Strike Beacon \u30b5\u30f3\u30d7\u30eb\u304c\u751f\u6210\u3057\u305f HTTP C2 \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092 TCP \u30b9\u30c8\u30ea\u30fc\u30e0\u3068\u3057\u3066\u78ba\u8a8d\u3057\u305f\u3068\u3053\u308d<\/figcaption><\/figure>\n<h2><a id=\"post-135322-_qnfexv4lmuii\"><\/a><strong>3 \u756a\u76ee\u306e\u30b5\u30f3\u30d7\u30eb<\/strong><\/h2>\n<p>3 \u756a\u76ee\u306e Beacon \u30b5\u30f3\u30d7\u30eb\u306e Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306f\u30011 \u756a\u76ee\u3068 2 \u756a\u76ee\u306e\u30b5\u30f3\u30d7\u30eb\u3068\u540c\u3058<a href=\"https:\/\/github.com\/rsmudge\/Malleable-C2-Profiles\/blob\/master\/normal\/ocsp.profile\" target=\"_blank\" rel=\"noopener\"><span style=\"font-family: 'courier new', courier, monospace;\">ocsp.profile<\/span><\/a>\u304b\u3089\u501f\u7528\u3055\u308c\u305f\u3082\u306e\u3067\u3057\u305f\u3002<\/p>\n<p>3 \u756a\u76ee\u306e\u30b5\u30f3\u30d7\u30eb\u306e SHA256 \u30cf\u30c3\u30b7\u30e5:<\/p>\n<ul>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">38eeb82dbb5285ff6a2122a065cd1f820438b88a02057f4e31a1e1e5339feb2b<\/span><\/li>\n<\/ul>\n<p>\u3053\u306e 3 \u756a\u76ee\u306e Cobalt Strike \u30b5\u30f3\u30d7\u30eb\u306f\u3001\u540c\u3058 ocsp.profile \u3092 Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306b\u4f7f\u3046\u30b9\u30c6\u30fc\u30b8\u30ec\u30b9\u306e 64 \u30d3\u30c3\u30c8 Windows \u5b9f\u884c\u53ef\u80fd\u30d5\u30a1\u30a4\u30eb\u3067\u3059\u304c\u3001\u3061\u3087\u3063\u3068\u5de5\u592b\u3057\u3066\u3042\u308a\u307e\u3059\u3002C2 \u30b5\u30fc\u30d0\u30fc\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u5148\u982d\u90e8\u5206\u306b\u306f\u3001\u6709\u540d\u306a\u591a\u56fd\u7c4d\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u4f01\u696d\u306e FQDN \u3068\u4e00\u81f4\u3059\u308b\u6587\u5b57\u5217\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>Cobalt Strike C2 \u30b5\u30fc\u30d0\u30fc\u306e FQDN \u306f www.consumershop.lenovo.com.cn.d4e97cc6.cdnhwcggk22[.]com \u3067\u3001\u3053\u306e\u89aa\u30c9\u30e1\u30a4\u30f3\u306f\u5b9f\u969b\u306b\u306f cdnhwcggk22[.]com \u3067\u3059\u3002<\/p>\n<p>\u56f3 5 \u306f\u3053\u306e 3 \u756a\u76ee\u306e\u30b5\u30f3\u30d7\u30eb\u304c\u751f\u6210\u3057\u305f HTTP C2 \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u4f8b\u3067\u3059\u3002\u3053\u3053\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306f\u3001C2 \u30c9\u30e1\u30a4\u30f3\u306e DNS \u30af\u30a8\u30ea\u30fc\u304c\u30b5\u30fc\u30d0\u30fc\u306e IP \u30a2\u30c9\u30ec\u30b9\u306b\u89e3\u6c7a\u3055\u308c\u305f\u5f8c\u306b\u958b\u59cb\u3055\u308c\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_135259\" aria-describedby=\"caption-attachment-135259\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-135259 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-477438-135250-5.png\" alt=\"Wireshark \u3067\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3055\u308c\u305f\u611f\u67d3\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u3002 \" width=\"900\" height=\"278\" srcset=\"https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-477438-135250-5.png 1914w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-477438-135250-5-786x243.png 786w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-477438-135250-5-768x238.png 768w, https:\/\/origin-unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/word-image-477438-135250-5-1536x475.png 1536w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><figcaption id=\"caption-attachment-135259\" class=\"wp-caption-text\">\u56f3 5. 3 \u756a\u76ee\u306e Cobalt Strike \u30b5\u30f3\u30d7\u30eb\u304c\u751f\u6210\u3057\u305f C2 \u30c8\u30e9\u30d5\u30a3\u30c3\u30af (Wireshark \u3067\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3057\u305f\u3082\u306e)<\/figcaption><\/figure>\n<h2><a id=\"post-135322-_2an8ryq91inv\"><\/a><strong>\u516c\u958b\u6e08\u307f Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u306e\u501f\u7528<\/strong><\/h2>\n<p>Cobalt Strike \u306e\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u691c\u51fa\u306b\u304a\u3044\u3066\u3001HTTP \u30ea\u30af\u30a8\u30b9\u30c8 \u30d8\u30c3\u30c0\u30fc\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u30d9\u30fc\u30b9\u306b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30c8\u30e9\u30d5\u30a3\u30c3\u30af \u30d1\u30bf\u30fc\u30f3\u3092\u4f5c\u3063\u3066\u691c\u51fa\u3057\u3066\u3044\u305f\u306e\u3067\u306f\u9ad8\u3044\u52b9\u679c\u306f\u671b\u3081\u307e\u305b\u3093\u3002\u30d1\u30bf\u30fc\u30f3\u306e\u30d0\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u304c\u3042\u307e\u308a\u306b\u81a8\u5927\u3067\u3001\u691c\u51fa\u304c\u3046\u307e\u304f\u3044\u304b\u306a\u3044\u304b\u3089\u3067\u3059\u3002\u6b63\u898f\u8868\u73fe\u30d1\u30bf\u30fc\u30f3\u306a\u3069\u306e\u3044\u304f\u3064\u304b\u306e\u56de\u907f\u7b56\u3092\u4f7f\u3048\u3070\u4e00\u6642\u7684\u306b\u306f\u3053\u306e\u56de\u907f\u554f\u984c\u3092\u7de9\u548c\u3067\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u653b\u6483\u8005\u304c\u3061\u3087\u3063\u3068 Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u3044\u3058\u308b\u3060\u3051\u3067\u3001\u5f93\u6765\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u306b\u5f7c\u3089\u304c\u4e00\u6b69\u5148\u3093\u3058\u308b\u3088\u3046\u306a\u691c\u51fa\u306e\u8ecd\u62e1\u7af6\u4e89\u306b\u9665\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u3053\u3046\u3057\u305f\u72b6\u6cc1\u3067\u306e\u30b3\u30b9\u30c8\u5897\u306f\u653b\u6483\u5074\u3088\u308a\u9632\u5fa1\u5074\u306b\u5927\u304d\u304f\u50be\u304d\u307e\u3059\u3002<\/p>\n<p>\u3057\u304b\u3082\u5f7c\u3089\u306f Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u30bc\u30ed\u304b\u3089\u4f5c\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u305b\u3093\u3002\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u30b5\u30f3\u30d7\u30eb\u3092\u3055\u3063\u3068\u30b3\u30d4\u30fc\u3057\u3066\u30cb\u30fc\u30ba\u306b\u5408\u308f\u305b\u3066\u5024\u3092\u3044\u3058\u304f\u3063\u3066\u3084\u308c\u3070\u3088\u3044\u306e\u3067\u3059\u3002\u79c1\u305f\u3061\u306e\u8abf\u67fb\u304b\u3089\u306f\u3001\u653b\u6483\u8005\u3089\u304c\u516c\u958b\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u307b\u3093\u306e\u5c11\u3057\u5909\u66f4\u3057\u3066 Cobalt Strike \u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u306b\u4f7f\u3046\u3053\u3068\u3067\u3001\u691c\u51fa\u9003\u308c\u3092\u56f3\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u793a\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<h2><a id=\"post-135322-_x5j6y1qvz7d8\"><\/a><strong>\u7d50\u8ad6<\/strong><\/h2>\n<p>\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u60c5\u52e2\u306f\u5e38\u306b\u9032\u5316\u3057\u3066\u304a\u308a\u3001\u653b\u6483\u8005\u3089\u306f\u65b0\u305f\u306a\u624b\u6cd5\u3092\u57f7\u62d7\u306b\u8ffd\u3044\u6c42\u3081\u3066\u3044\u307e\u3059\u3002\u305d\u3046\u3057\u305f\u306a\u304b\u306b\u306f\u3001\u516c\u958b\u3055\u308c\u305f Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u306e\u6d3b\u7528\u3082\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u6226\u7565\u306b\u3088\u308a\u3001\u653b\u6483\u8005\u306f\u67d4\u8edf\u306b Cobalt Strike C2 \u901a\u4fe1\u3092\u958b\u59cb\u3057\u3001\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3092\u983b\u7e41\u306b\u5909\u66f4\u3057\u3066\u691c\u51fa\u3092\u56de\u907f\u3057\u3001\u60aa\u610f\u306e\u3042\u308b\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u3092\u7d99\u7d9a\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u6226\u8853\u306f\u3001\u30b5\u30a4\u30d0\u30fc\u8105\u5a01\u306e\u52d5\u7684\u6027\u8cea\u3068\u3001\u9069\u5fdc\u6027\u30fb\u5148\u9032\u6027\u3092\u5099\u3048\u305f\u9632\u5fa1\u30e1\u30ab\u30cb\u30ba\u30e0\u306e\u305f\u3048\u3056\u308b\u5fc5\u8981\u6027\u3068\u3092\u7269\u8a9e\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>ATP \u306e\u3088\u3046\u306a\u6a5f\u68b0\u5b66\u7fd2\u30d9\u30fc\u30b9\u306e\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u306f\u3001Cobalt Strike \u306e\u3088\u3046\u306a\u56de\u907f\u6027\u306e\u9ad8\u3044\u653b\u6483\u3084 C2 \u3092\u9632\u3050\u305f\u3081\u306b\u5229\u7528\u3067\u304d\u308b\u6700\u826f\u306e\u9632\u5fa1\u5bfe\u7b56\u3067\u3059\u3002\u30d2\u30e5\u30fc\u30ea\u30b9\u30c6\u30a3\u30c3\u30af\u691c\u51fa\u3067\u306f\u3001Malleable C2 \u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u304c\u305f\u3084\u3059\u304f\u63d0\u4f9b\u3059\u308b\u81a8\u5927\u306a\u6570\u306e\u7d44\u307f\u5408\u308f\u305b\u3092\u30ab\u30d0\u30fc\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u8aa4\u691c\u77e5\u306b\u3088\u308b\u30b3\u30b9\u30c8\u306f\u9632\u5fa1\u5074\u306b\u5927\u304d\u304f\u4e0d\u5229\u306b\u50cd\u304d\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u904b\u7528\u4e0a\u306e\u8106\u5f31\u6027\u3068\u306a\u308a\u307e\u3059\u3057\u3001\u305d\u3053\u3092\u653b\u6483\u8005\u3089\u306f\u81ea\u3089\u306b\u8cc7\u3059\u308b\u3088\u3046\u7a81\u3044\u3066\u304d\u307e\u3059\u3002<\/p>\n<p>ATP \u306e\u3088\u3046\u306a\u6a5f\u68b0\u5b66\u7fd2\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3092\u63a1\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3053\u306e\u3088\u3046\u306a\u7a2e\u985e\u306e\u8105\u5a01\u306b\u5bfe\u6297\u3059\u308b\u691c\u51fa\u6a5f\u80fd\u304c\u63d0\u4f9b\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u3089\u306e\u8105\u5a01\u306b\u5bfe\u5fdc\u3057\u3064\u3065\u3051\u308b\u3079\u304f\u3001\u81ea\u793e\u306e\u6301\u3066\u308b\u6280\u8853\u3092\u9032\u6b69\u3055\u305b\u3066\u3044\u304f\u53d6\u308a\u7d44\u307f\u306f\u3001\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5353\u8d8a\u6027\u3068\u30c7\u30b8\u30bf\u30eb \u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306e\u5b89\u5168\u306b\u5bfe\u3059\u308b\u5f0a\u793e\u306e\u5c02\u5fc3\u3092\u6539\u3081\u3066\u78ba\u8a8d\u3059\u308b\u3082\u306e\u3068\u3044\u3048\u307e\u3059\u3002<\/p>\n<h3><a id=\"post-135322-_lsbythhc3nz9\"><\/a>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306e\u4fdd\u8b77\u3068\u7de9\u548c\u7b56<\/h3>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306e\u304a\u5ba2\u69d8\u306f\u3001\u4ee5\u4e0b\u306e\u88fd\u54c1\u3092\u901a\u3058\u3066\u3001Cobalt Strike \u306e\u8105\u5a01\u304b\u3089\u3055\u3089\u306b\u5f37\u529b\u306b\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/docs.paloaltonetworks.com\/pan-os\/10-2\/pan-os-admin\/threat-prevention\/about-threat-prevention\/advanced-threat-prevention\">Advanced Threat Prevention<\/a> \u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u3092\u6709\u52b9\u306b\u3057\u305f\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb (<a href=\"https:\/\/docs.paloaltonetworks.com\/ngfw\" target=\"_blank\" rel=\"noopener\">NGFW<\/a>) \u306f\u3001\u30ab\u30b9\u30bf\u30e0 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u304c\u751f\u6210\u3057\u305fCobalt Strike \u306e HTTP C2 \u30ea\u30af\u30a8\u30b9\u30c8\u3092\u8b58\u5225\u3057\u3066\u30d6\u30ed\u30c3\u30af\u3057\u3001HTTP C2 \u30ea\u30af\u30a8\u30b9\u30c8\u3092\u30d6\u30ed\u30c3\u30af\u3057\u307e\u3059\u3002<\/li>\n<li><a href=\"https:\/\/docs.paloaltonetworks.com\/wildfire\">Advanced WildFire<\/a>\u3001<a href=\"https:\/\/docs-cortex.paloaltonetworks.com\/p\/XDR\" target=\"_blank\" rel=\"noopener\">Cortex XDR<\/a>\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/prisma\/cloud\" target=\"_blank\" rel=\"noopener\">Prisma Cloud<\/a> \u306f\u3001Cobalt Strike Beacon \u306e\u30d0\u30a4\u30ca\u30ea\u30fc\u3092\u8b58\u5225\u30fb\u30d6\u30ed\u30c3\u30af\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001XDR \u306f\u95a2\u9023\u3059\u308b\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u8a66\u884c\u3092\u5831\u544a\u3057\u307e\u3059\u3002<\/li>\n<li><a href=\"https:\/\/xsoar.pan.dev\/docs\/reference\/playbooks\/mitre-attck-co-a---t1041---exfiltration-over-c2-channel\">Cortex XSOAR\u306e\u30ec\u30b9\u30dd\u30f3\u30b9 \u30d1\u30c3\u30af\u3068\u30d7\u30ec\u30a4\u30d6\u30c3\u30af<\/a>\u306f\u7de9\u548c\u5bfe\u7b56\u30d7\u30ed\u30bb\u30b9\u3092\u81ea\u52d5\u5316\u3057\u307e\u3059\u3002<\/li>\n<li><a href=\"https:\/\/docs.paloaltonetworks.com\/advanced-url-filtering\/administration\" target=\"_blank\" rel=\"noopener\">Advanced URL Filtering<\/a> \u306b\u306f\u3001\u60aa\u610f\u306e\u3042\u308b URL \u3068 IP \u30a2\u30c9\u30ec\u30b9\u3092\u8ffd\u52a0\u6e08\u307f\u3067\u3059\u3002<\/li>\n<\/ul>\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=\"https:\/\/start.paloaltonetworks.jp\/contact-unit42.html\" target=\"_blank\" rel=\"noopener\">\u3053\u3061\u3089\u306e\u30d5\u30a9\u30fc\u30e0<\/a>\u304b\u3089\u3054\u9023\u7d61\u3044\u305f\u3060\u304f\u304b\u3001infojapan@paloaltonetworks.com \u307e\u3067\u30e1\u30fc\u30eb\u306b\u3066\u3054\u9023\u7d61\u3044\u305f\u3060\u304f\u304b\u3001\u4e0b\u8a18\u306e\u96fb\u8a71\u756a\u53f7\u307e\u3067\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044 (\u3054\u76f8\u8ac7\u306f\u5f0a\u793e\u88fd\u54c1\u306e\u304a\u5ba2\u3055\u307e\u306b\u306f\u9650\u5b9a\u3055\u308c\u307e\u305b\u3093)\u3002<\/p>\n<ul>\n<li>\u5317\u7c73\u30d5\u30ea\u30fc\u30c0\u30a4\u30e4\u30eb: 866.486.4842 (866.4.UNIT42)<\/li>\n<li>EMEA: +31.20.299.3130<\/li>\n<li>APAC: +65.6983.8730<\/li>\n<li>\u65e5\u672c: (+81) 50-1790-0200<\/li>\n<\/ul>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306f\u3001\u3053\u308c\u3089\u306e\u8abf\u67fb\u7d50\u679c\u3092 Cyber 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\u3063\u3066\u3001\u304a\u5ba2\u3055\u307e\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\u3067\u304d\u307e\u3059\u3002\u8a73\u7d30\u306f <a href=\"https:\/\/www.cyberthreatalliance.org\" target=\"_blank\" rel=\"noopener\">Cyber Threat Alliance<\/a> \u306b\u3066\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\uff61<\/p>\n<h2><a id=\"post-135322-_v8176g40kstn\"><\/a><strong>IoC (\u4fb5\u5bb3\u6307\u6a19)<\/strong><\/h2>\n<h3><a id=\"post-135322-_xtexhuomvv0h\"><\/a>Cobalt Strike \u30b5\u30f3\u30d7\u30eb\u306e SHA256 \u30cf\u30c3\u30b7\u30e5:<\/h3>\n<ul>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">1980becd2152f4c29dffbb9dc113524a78f8246d3ba57384caf1738142bb3a07<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">B587e215ce8c0b3a1525f136fe38bfdc0232300e1a4f7e651e5dc6e86313e941<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">38eeb82dbb5285ff6a2122a065cd1f820438b88a02057f4e31a1e1e5339feb2b<\/span><\/li>\n<\/ul>\n<h3><a id=\"post-135322-_j9s3sb9p8wlk\"><\/a>Cobalt Strike C2 \u306b\u4f7f\u7528\u3055\u308c\u308b\u30c9\u30e1\u30a4\u30f3\u3068 IP \u30a2\u30c9\u30ec\u30b9:<\/h3>\n<ul>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">msupdate.azurefd[.]net<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">o365updater.azureedge[.]net<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">gupdater.bbtecno[.]com<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">teamsupd.azurewebsites[.]net<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">msdn1357.centralus.cloudapp.azure[.]com<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">cupdater.bbtecno[.]com<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">msupdate.brazilsouth.cloudapp.azure[.]com<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">msdn1357.centralus.cloudapp.azure[.]com<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">update37.eastus.cloudapp.azure[.]com<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">update.westus.cloudapp.azure[.]com<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">www.consumershop.lenovo.com.cn.d4e97cc6.cdnhwcggk22[.]com<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">146.235.52[.]69<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">159.112.177[.]137<\/span><\/li>\n<\/ul>\n<h2><a id=\"post-135322-_570cbe1pdhwx\"><\/a><strong>\u8ffd\u52a0\u30ea\u30bd\u30fc\u30b9<\/strong><\/h2>\n<ul>\n<li><a href=\"https:\/\/www.cobaltstrike.com\/training\" target=\"_blank\" rel=\"noopener\">Cobalt Strike Training Resources<\/a> \u2013 Fortra<\/li>\n<li>Cobalt Strike User Guide: <a href=\"https:\/\/www.cobaltstrike.com\/help-malleable-c2\" target=\"_blank\" rel=\"noopener\">Malleable Command and Control<\/a> \u2013 Fortra<\/li>\n<li><a href=\"https:\/\/unit42.paloaltonetworks.jp\/cobalt-strike-malleable-c2-profile\/\" target=\"_blank\" rel=\"noopener\">Cobalt Strike \u89e3\u6790 &amp; \u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb: Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3067 Cobalt Strike \u691c\u51fa\u304c\u96e3\u3057\u304f\u306a\u308b\u7406\u7531<\/a> \u2013 \u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9 Unit 42<\/li>\n<li><a href=\"https:\/\/unit42.paloaltonetworks.jp\/cobalt-strike-metadata-encoding-decoding\/\" target=\"_blank\" rel=\"noopener\">Cobalt Strike \u89e3\u6790 &amp; \u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb: Cobalt Strike \u306b\u3088\u308b\u30e1\u30bf\u30c7\u30fc\u30bf\u306e\u30a8\u30f3\u30b3\u30fc\u30c9\u3068\u30c7\u30b3\u30fc\u30c9<\/a> \u2013 \u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9 Unit 42<\/li>\n<li><a href=\"https:\/\/live.paloaltonetworks.com\/t5\/blogs\/cobalt-strike-attack-detection-amp-defense-technology-overview\/ba-p\/533753\" target=\"_blank\" rel=\"noopener\">Cobalt Strike Attack Detection &amp; Defense Technology Overview<\/a> \u2013 Palo Alto Networks, LIVEcommunity<\/li>\n<li><a href=\"https:\/\/unit42.paloaltonetworks.jp\/cobalt-strike-malleable-c2\/\" target=\"_blank\" rel=\"noopener\">Cobalt Strike \u89e3\u6790 &amp; \u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb: \u4eba\u6c17 Cobalt Strike Malleable C2 \u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u6280\u8853\u306e\u691c\u51fa<\/a> \u2013 \u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9 Unit 42<\/li>\n<li><a href=\"https:\/\/blog.nviso.eu\/2021\/10\/21\/cobalt-strike-using-known-private-keys-to-decrypt-traffic-part-1\/\" target=\"_blank\" rel=\"noopener\">Cobalt Strike: Using Known Private Keys To Decrypt Traffic, Part 1<\/a> \u2013 NVISO Labs<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981 \u672c\u7a3f\u306f\u3001\u60aa\u610f\u306e\u3042\u308b Cobalt Strike \u30a4\u30f3\u30d5\u30e9\u306b\u95a2\u3059\u308b\u6700\u8fd1\u306e\u8abf\u67fb\u7d50\u679c\u3092 Unit 42 \u306e\u30ea\u30b5\u30fc\u30c1\u30e3\u30fc\u304c\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u60aa\u8cea\u306a Cobalt Strike \u30b5\u30f3\u30d7\u30eb\u3082\u3044\u304f\u3064\u304b\u5171\u6709\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30b5<\/p>\n","protected":false},"author":313,"featured_media":134328,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[1974,4428],"tags":[4899,4871],"product_categories":[4442,4443,4444,4446,4447,4448,4451,4456,4458,4465],"coauthors":[1360,845,2423,909],"class_list":["post-135322","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-malware-ja","category-threat-research-ja","tag-cobalt-strike-ja","tag-malleable-c2-profile-ja","product_categories-advanced-threat-prevention-ja","product_categories-advanced-url-filtering-ja","product_categories-advanced-wildfire-ja","product_categories-cloud-delivered-security-services-ja","product_categories-cortex-ja","product_categories-cortex-xdr-ja","product_categories-cortex-xsoar-ja","product_categories-next-generation-firewall-ja","product_categories-prisma-cloud-ja","product_categories-unit-42-incident-response-ja"],"yoast_head":"<!-- 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