{"id":132856,"date":"2024-02-29T20:45:06","date_gmt":"2024-03-01T04:45:06","guid":{"rendered":"https:\/\/unit42.paloaltonetworks.com\/?p=132856"},"modified":"2024-06-13T22:12:29","modified_gmt":"2024-06-14T05:12:29","slug":"new-linux-variant-bifrost-malware","status":"publish","type":"post","link":"https:\/\/unit42.paloaltonetworks.com\/ja\/new-linux-variant-bifrost-malware\/","title":{"rendered":"\u30c9\u30e1\u30a4\u30f3\u3067\u9a19\u3059\u6280\u8853: \u30e6\u30fc\u30b6\u30fc\u3092\u6b3a\u304f Bifrost \u306e\u65b0\u6226\u8853"},"content":{"rendered":"<h2><a id=\"post-132856-_h6nsmbyscwfl\"><\/a>\u6982\u8981<\/h2>\n<p>\u79c1\u305f\u3061\u306f\u6700\u8fd1\u3001Bifrost (\u5225\u540d Bifrose) \u306e\u65b0\u305f\u306a Linux \u4e9c\u7a2e\u3092\u767a\u898b\u3057\u305f\u306e\u3067\u3059\u304c\u3001\u3053\u308c\u306f\u691c\u51fa\u56de\u907f\u306b\u5275\u610f\u306b\u5bcc\u3080\u6280\u8853\u3092\u4f7f\u3046\u30de\u30eb\u30a6\u30a7\u30a2\u306e\u597d\u4f8b\u3068\u3044\u3048\u308b\u3082\u306e\u3067\u3057\u305f\u3002\u540c\u4e9c\u7a2e\u306f\u3001\u6b63\u898f VMware \u30c9\u30e1\u30a4\u30f3\u3092\u6a21\u5023\u3057\u305f <span style=\"font-family: 'courier new', courier, monospace;\">download.vmfare[.]com<\/span> \u3068\u3044\u3046\u507d\u88c5\u30c9\u30e1\u30a4\u30f3\u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u306e Bifrost \u306e\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3092\u30d0\u30a4\u30d1\u30b9\u3057\u3066\u6a19\u7684\u30b7\u30b9\u30c6\u30e0\u3092\u5371\u6b86\u5316\u3059\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>2004 \u5e74\u306b\u521d\u3081\u3066\u78ba\u8a8d\u3055\u308c\u305f Bifrost \u306f\u30ea\u30e2\u30fc\u30c8\u30a2\u30af\u30bb\u30b9\u578b\u30c8\u30ed\u30a4\u306e\u6728\u99ac (RAT) \u3067\u3059\u3002\u653b\u6483\u8005\u306f\u3053\u308c\u3092\u4f7f\u3063\u3066\u30db\u30b9\u30c8\u540d\u3084 IP \u30a2\u30c9\u30ec\u30b9\u306a\u3069\u306e\u6a5f\u5fae\u60c5\u5831\u3092\u53ce\u96c6\u3067\u304d\u307e\u3059\u3002\u672c\u7a3f\u306f Bifrost \u3092\u63a2\u7d22\u3057\u3064\u3064\u3001\u3053\u3053\u6570\u30f6\u6708\u9593\u306e Linux \u7248 Bifrost \u4e9c\u7a2e\u306e\u9855\u8457\u306a\u6025\u5897\u306b\u3064\u3044\u3066\u3082\u7d39\u4ecb\u3057\u307e\u3059\u3002\u3053\u306e\u6025\u5897\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5c02\u9580\u5bb6\u3084\u7d44\u7e54\u306e\u61f8\u5ff5\u3092\u62db\u3044\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<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/advanced-wildfire\" target=\"_blank\" rel=\"noopener\">Advanced WildFire<\/a>\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/advanced-url-filtering\" target=\"_blank\" rel=\"noopener\">Advanced URL Filtering<\/a>\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/dns-security\" target=\"_blank\" rel=\"noopener\">DNS Security<\/a> \u306a\u3069\u306e<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/security-subscriptions\" target=\"_blank\" rel=\"noopener\">\u30af\u30e9\u30a6\u30c9\u914d\u4fe1\u578b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b5\u30fc\u30d3\u30b9<\/a>\u3092\u6709\u52b9\u306b\u3057\u305f<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/next-generation-firewall\" target=\"_blank\" rel=\"noopener\">\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb (NGFW) <\/a> \u306b\u3088\u308a\u3001\u672c\u7a3f\u3067\u53d6\u308a\u4e0a\u3052\u305f\u8105\u5a01\u304b\u3089\u306e\u4fdd\u8b77\u3092\u53d7\u3051\u3066\u3044\u307e\u3059\u3002<a href=\"https:\/\/www.paloaltonetworks.jp\/cortex\/cortex-xdr\" target=\"_blank\" rel=\"noopener\">Cortex XDR<\/a> \u306f\u3001Bifrost \u304a\u3088\u3073\u305d\u308c\u306b\u95a2\u9023\u3059\u308b\u60aa\u610f\u306e\u3042\u308b\u52d5\u4f5c\u3092\u691c\u51fa\u30fb\u9632\u6b62\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\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\u69d8\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\/remote-access-trojan-ja\/\" target=\"_blank\" rel=\"noopener\"><b>Remote Access Trojans<\/b><\/a>, <strong><a href=\"https:\/\/unit42.paloaltonetworks.jp\/tag\/linux-ja\/\" target=\"_blank\" rel=\"noopener\">Linux<\/a><\/strong><\/td>\n<\/tr>\n<\/thead>\n<\/table>\n<h2><a id=\"post-132856-_mblbwsc51gbb\"><\/a>\u306f\u3058\u3081\u306b<\/h2>\n<p>\u653b\u6483\u8005\u306f\u901a\u5e38\u3001\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u3084\u60aa\u610f\u306e\u3042\u308b\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3092\u901a\u3058\u3066 Bifrost \u3092\u914d\u5e03\u3057\u307e\u3059\u3002Bifrost \u304c\u88ab\u5bb3\u8005\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u308b\u3068\u3001\u653b\u6483\u8005\u304c\u88ab\u5bb3\u8005\u306e\u30db\u30b9\u30c8\u540d\u3084 IP \u30a2\u30c9\u30ec\u30b9\u306a\u3069\u306e\u6a5f\u5fae\u60c5\u5831\u3092\u96c6\u3081\u3089\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>Bifrost \u306e\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u306f\u3001<span style=\"font-family: 'courier new', courier, monospace;\">download.vmfare[.]com<\/span> \u3068\u3044\u3046\u3001\u6b63\u898f VMware \u30c9\u30e1\u30a4\u30f3\u306b\u4f3c\u305b\u305f\u6b3a\u779e\u7684\u540d\u79f0\u3092\u3082\u3064\u30b3\u30de\u30f3\u30c9 &amp; \u30b3\u30f3\u30c8\u30ed\u30fc\u30eb (C2) \u30c9\u30e1\u30a4\u30f3\u306b\u63a5\u7d9a\u3057\u307e\u3059\u3002\u3053\u306e\u3084\u308a\u53e3\u306f<a href=\"https:\/\/ja.wikipedia.org\/wiki\/%E3%82%BF%E3%82%A4%E3%83%9D%E3%82%B9%E3%82%AF%E3%83%AF%E3%83%83%E3%83%86%E3%82%A3%E3%83%B3%E3%82%B0\" target=\"_blank\" rel=\"noopener\">\u30bf\u30a4\u30dd\u30b9\u30af\u30ef\u30c3\u30c6\u30a3\u30f3\u30b0<\/a>\u3068\u3044\u3046\u540d\u3067\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002Bifrost \u306e\u80cc\u5f8c\u306b\u3044\u308b\u653b\u6483\u8005\u306f\u3001\u3053\u306e\u6b3a\u779e\u7684\u306a\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u4f7f\u3044\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3092\u30d0\u30a4\u30d1\u30b9\u3057\u3066\u691c\u51fa\u3092\u56de\u907f\u3057\u3001\u6700\u7d42\u7684\u306b\u306f\u6a19\u7684\u306e\u30b7\u30b9\u30c6\u30e0\u3092\u4fb5\u5bb3\u3059\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306e\u56f3 1 \u306b\u793a\u3059\u3088\u3046\u306b\u30012 \u6708\u4e0b\u65ec\u6642\u70b9\u3067\u3053\u306e\u6b3a\u779e\u7684\u306a\u30c9\u30e1\u30a4\u30f3\u306f\u307e\u3060 <a href=\"https:\/\/www.virustotal.com\/gui\/domain\/download.vmfare.com\" target=\"_blank\" rel=\"noopener\"> VirusTotal <\/a> \u3067\u306f\u691c\u51fa\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n<figure id=\"attachment_132833\" aria-describedby=\"caption-attachment-132833\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-132833 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/02\/word-image-876254-132830-1.png\" alt=\"\u753b\u50cf 1 \u306f\u3001\u6b3a\u779e\u7684\u306a\u30c9\u30e1\u30a4\u30f3\u306e VirusTotal \u30b9\u30b3\u30a2\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u3067\u3059\u3002\u3053\u306e\u60c5\u5831\u306b\u306f\u3001\u30b3\u30df\u30e5\u30cb\u30c6\u30a3 \u30b9\u30b3\u30a2 (\u30bc\u30ed) \u3001\u691c\u51fa\u3001\u8a73\u7d30\u3001\u95a2\u4fc2\u3001\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30da\u30fc\u30b8\u3092\u8868\u793a\u3055\u305b\u305f\u3055\u3044\u306b\u306f\u3001\u4f5c\u6210\u65e5\u306f 10 \u30f6\u6708\u524d\u3001\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u6642\u306e\u6700\u7d42\u5206\u6790\u65e5\u306f 3 \u30f6\u6708\u524d\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\" width=\"900\" height=\"259\" \/><figcaption id=\"caption-attachment-132833\" class=\"wp-caption-text\">\u56f3 1. <span style=\"font-family: 'courier new', courier, monospace;\">download.vmfare[.]com<\/span> \u306e VirusTotal \u30b9\u30b3\u30a2<\/figcaption><\/figure>\n<h2><a id=\"post-132856-_67f5pa2ldrrg\"><\/a>\u30de\u30eb\u30a6\u30a7\u30a2\u306e\u6982\u8981: Bifrost<\/h2>\n<p>\u79c1\u305f\u3061\u306f\u3001<span style=\"font-family: 'courier new', courier, monospace;\">45.91.82[.]127<\/span> \u3068\u3044\u3046\u30b5\u30fc\u30d0\u30fc\u4e0a\u306b\u30db\u30b9\u30c8\u3055\u308c\u3066\u3044\u308b Bifrost \u306e\u6700\u65b0\u30b5\u30f3\u30d7\u30eb (SHA256 \u30cf\u30c3\u30b7\u30e5: <span style=\"font-family: 'courier new', courier, monospace;\">8e85cb6f2215999dc6823ea3982ff4376c2cbea53286e95ed00250a4a2fe4729<\/span>) \u3092\u767a\u898b\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u306e\u30d0\u30a4\u30ca\u30ea\u30fc\u306f\u3001x86 \u7528\u306b\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u305f\u3001\u30b9\u30c8\u30ea\u30c3\u30d7\u6e08\u307f\u306e\u30d0\u30a4\u30ca\u30ea\u30fc\u306e\u3088\u3046\u3067\u3059\u3002\u30b9\u30c8\u30ea\u30c3\u30d7\u6e08\u307f\u306e\u30d0\u30a4\u30ca\u30ea\u30fc\u3068\u306f\u3001\u30c7\u30d0\u30c3\u30b0\u60c5\u5831\u3084\u30b7\u30f3\u30dc\u30eb \u30c6\u30fc\u30d6\u30eb\u304c\u524a\u9664 (strip) \u3055\u308c\u305f\u30d0\u30a4\u30ca\u30ea\u30fc\u306e\u3053\u3068\u3067\u3059\u3002\u653b\u6483\u8005\u306f\u901a\u5e38\u3001\u5206\u6790\u3092\u59a8\u5bb3\u3059\u308b\u305f\u3081\u306b\u3053\u3046\u3057\u305f\u30b9\u30c8\u30ea\u30c3\u30d7\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n<p>\u56f3 2 \u306f\u3001 Linux \u74b0\u5883\u306e\u30bf\u30fc\u30df\u30ca\u30eb \u30a6\u30a3\u30f3\u30c9\u30a6\u304b\u3089 <span style=\"font-family: 'courier new', courier, monospace;\">file<\/span> \u30b3\u30de\u30f3\u30c9\u3067\u30b5\u30f3\u30d7\u30eb\u306e\u30d5\u30a1\u30a4\u30eb \u30bf\u30a4\u30d7\u3092\u8868\u793a\u3057\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_132835\" aria-describedby=\"caption-attachment-132835\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-132835 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/02\/word-image-879466-132830-2.png\" alt=\"\u753b\u50cf 2 \u306f Linux \u30bf\u30fc\u30df\u30ca\u30eb\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u3002\u3053\u306e\u30b3\u30fc\u30c9\u306f\u30bf\u30fc\u30df\u30ca\u30eb\u306b\u30b9\u30c8\u30ea\u30c3\u30d7\u6e08\u307f\u30d0\u30a4\u30ca\u30ea\u30fc\u3067\u3042\u308b\u3053\u3068\u3092\u8868\u793a\u3057\u3066\u3044\u307e\u3059\u30024 \u884c\u76ee\u306b\u300cstripped (\u30b9\u30c8\u30ea\u30c3\u30d7\u6e08\u307f)\u300d\u3068\u3042\u308a\u307e\u3059\u3002\" width=\"800\" height=\"175\" \/><figcaption id=\"caption-attachment-132835\" class=\"wp-caption-text\">\u56f3 2. \u30b9\u30c8\u30ea\u30c3\u30d7\u6e08\u307f\u306e\u30d0\u30a4\u30ca\u30ea\u30fc<\/figcaption><\/figure>\n<p>Bifrost \u306e\u6700\u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u6a5f\u80fd\u3092\u3055\u3089\u306b\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u3001\u79c1\u305f\u3061\u306f\u3053\u306e\u6700\u8fd1\u306e\u30b5\u30f3\u30d7\u30eb\u3092\u9006\u30a2\u30bb\u30f3\u30d6\u30e9\u30fc\u3067\u898b\u3066\u307f\u307e\u3057\u305f\u3002\u3053\u306e\u30de\u30eb\u30a6\u30a7\u30a2\u306f\u307e\u305a\u3001<span style=\"font-family: 'courier new', courier, monospace;\">setSocket<\/span> \u95a2\u6570\u3067\u30bd\u30b1\u30c3\u30c8\u3092\u4f5c\u6210\u3057\u3001\u901a\u4fe1\u3092\u78ba\u7acb\u3057\u305f\u5f8c\u3001\u30e6\u30fc\u30b6\u30fc \u30c7\u30fc\u30bf\u3092\u53ce\u96c6\u3057\u3001\u653b\u6483\u8005\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u9001\u4fe1\u3057\u307e\u3059\u3002\u9006\u30a2\u30bb\u30f3\u30d6\u30eb\u3057\u3066\u3053\u308c\u3092\u793a\u3057\u305f\u30b3\u30fc\u30c9\u3092\u56f3 3 \u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_132837\" aria-describedby=\"caption-attachment-132837\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-132837 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/02\/word-image-883203-132830-3.png\" alt=\"\u753b\u50cf 3 \u306f\u30b3\u30fc\u30c9 \u30d5\u30ed\u30fc\u3068\u9006\u30a2\u30bb\u30f3\u30d6\u30e9\u30fc\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u3067\u3059\u3002\u5de6\u4e0a\u306b\u8d64\u304f\u30cf\u30a4\u30e9\u30a4\u30c8\u3055\u308c\u3066\u3044\u308b\u306e\u304c SetSocket \u3067\u3059\u3002\u53f3\u4e0b\u306b\u8d64\u304f\u30cf\u30a4\u30e9\u30a4\u30c8\u3055\u308c\u3066\u3044\u308b\u306e\u306f\u3001DataCollection \u3068 SendDatatoC2 \u3067\u3059\u3002\" width=\"700\" height=\"392\" \/><figcaption id=\"caption-attachment-132837\" class=\"wp-caption-text\">\u56f3 3. \u9006\u30a2\u30bb\u30f3\u30d6\u30e9\u30fc\u3067\u30de\u30eb\u30a6\u30a7\u30a2\u306e\u30b3\u30fc\u30c9 \u30d5\u30ed\u30fc\u3092\u8868\u793a\u3057\u305f\u3068\u3053\u308d<\/figcaption><\/figure>\n<p><span style=\"font-family: 'courier new', courier, monospace;\">setSocket<\/span> \u95a2\u6570\u306e\u30b3\u30fc\u30c9 \u30b9\u30cb\u30da\u30c3\u30c8\u3092\u56f3 4 \u306b\u793a\u3057\u307e\u3059\u3002\u3053\u306e\u30b3\u30fc\u30c9\u3067\u306f\u30013 \u3064\u306e\u5024\u3092\u30b9\u30bf\u30c3\u30af\u306b push \u3057\u3001\u5f8c\u3067 <span style=\"font-family: 'courier new', courier, monospace;\">sys_socket(0x8063A80)<\/span> \u3092\u547c\u3073\u51fa\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">push 2<\/span>: \u3053\u308c\u306f\u30bd\u30b1\u30c3\u30c8 \u30c9\u30e1\u30a4\u30f3\u306e AF_INET (IPv4 Internet Protocols) \u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">push 1<\/span>: \u3053\u308c\u306f\u30bd\u30b1\u30c3\u30c8 \u30bf\u30a4\u30d7\u306e SOCK_STREAM (TCP) \u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">push 6<\/span>: \u3053\u308c\u306f\u30bd\u30b1\u30c3\u30c8 \u30d7\u30ed\u30c8\u30b3\u30eb\u306e IPPROTO_TCP (TCP) \u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n<figure id=\"attachment_132839\" aria-describedby=\"caption-attachment-132839\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-132839 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/02\/word-image-887338-132830-4.png\" alt=\"\u753b\u50cf 4 \u306f\u3001\u30b5\u30f3\u30d7\u30eb\u306e\u30bd\u30b1\u30c3\u30c8\u4f5c\u6210\u306e\u30b3\u30fc\u30c9\u3092\u9006\u30a2\u30bb\u30f3\u30d6\u30eb\u3057\u305f\u753b\u9762\u3067\u3059\u3002\u4e00\u90e8\u306e\u60c5\u5831\u306f\u9ec4\u8272\u3067\u30cf\u30a4\u30e9\u30a4\u30c8\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30bd\u30b1\u30c3\u30c8\u306e\u4f5c\u6210\u306f\u8d64\u67a0\u3067\u30cf\u30a4\u30e9\u30a4\u30c8\u3055\u308c\u3066\u3044\u307e\u3059\u3002\" width=\"700\" height=\"232\" \/><figcaption id=\"caption-attachment-132839\" class=\"wp-caption-text\">\u56f3 4. Bifrost \u30b5\u30f3\u30d7\u30eb\u306e\u30bd\u30b1\u30c3\u30c8\u4f5c\u6210\u30b3\u30fc\u30c9\u3092\u9006\u30a2\u30bb\u30f3\u30d6\u30e9\u30fc\u3067\u8868\u793a\u3057\u305f\u3068\u3053\u308d<\/figcaption><\/figure>\n<p>\u30bd\u30b1\u30c3\u30c8\u306e\u4f5c\u6210\u5f8c\u3001\u30de\u30eb\u30a6\u30a7\u30a2\u306f\u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf\u3092\u53ce\u96c6\u3057\u3066\u653b\u6483\u8005\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u9001\u4fe1\u3057\u307e\u3059 (\u56f3 5)\u3002<\/p>\n<figure id=\"attachment_132841\" aria-describedby=\"caption-attachment-132841\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-132841 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/02\/word-image-890661-132830-5.png\" alt=\"\u753b\u50cf 5 \u306f\u3001\u88ab\u5bb3\u8005\u306e\u30c7\u30fc\u30bf\u3092\u53ce\u96c6\u3059\u308b Bifrost \u30b3\u30fc\u30c9\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u3067\u3059\u3002\u8d64\u3044\u56db\u89d2\u3067\u5f37\u8abf\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u306e\u306f\u3001\u30db\u30b9\u30c8\u540d\u306e\u5075\u5bdf\u3067\u3059\u3002\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u306e\u4e0b\u306b\u3042\u308b 2 \u3064\u3081\u306e\u8d64\u3044\u56db\u89d2\u304c\u3001PID \u3092\u53ce\u96c6\u3059\u308b\u30b3\u30fc\u30c9\u3067\u3059\u3002\" width=\"700\" height=\"850\" \/><figcaption id=\"caption-attachment-132841\" class=\"wp-caption-text\">\u56f3 5. \u9006\u30a2\u30bb\u30f3\u30d6\u30eb\u3055\u308c\u305f Bifrost \u306e\u30b3\u30fc\u30c9\u3002\u88ab\u5bb3\u8005\u30c7\u30fc\u30bf\u306e\u53ce\u96c6\u65b9\u6cd5\u3092\u793a\u3057\u305f\u3082\u306e<\/figcaption><\/figure>\n<p>\u56f3 6 \u306b\u793a\u3059\u3088\u3046\u306b\u3001\u3053\u306e\u6700\u8fd1\u306e\u30b5\u30f3\u30d7\u30eb\u306f\u53ce\u96c6\u3057\u305f\u88ab\u5bb3\u8005\u30c7\u30fc\u30bf\u3092 RC4 \u6697\u53f7\u3067\u6697\u53f7\u5316\u3057\u3066\u3044\u307e\u3059\u3002\u4ee5\u524d\u306e Bifrost \u30b5\u30f3\u30d7\u30eb\u3068\u6bd4\u8f03\u3059\u308b\u3068\u82e5\u5e72\u306e\u5909\u5316\u304c\u898b\u3089\u308c\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u6697\u53f7\u5316\u30d7\u30ed\u30bb\u30b9\u306b\u304a\u3051\u308b\u30d3\u30c3\u30c8\u3054\u3068\u306e AND \u6f14\u7b97\u306a\u3069\u3067\u3059 (\u3053\u308c\u306f\u8abf\u67fb\u5bfe\u8c61\u306e\u7279\u5b9a\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u3088\u3063\u3066\u7570\u306a\u308b)\u3002<\/p>\n<figure id=\"attachment_132843\" aria-describedby=\"caption-attachment-132843\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-132843 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/02\/word-image-894619-132830-6.png\" alt=\"\u753b\u50cf 6 \u306f\u3001 Bifrost \u306e\u30b5\u30f3\u30d7\u30eb \u30b3\u30fc\u30c9\u3092\u9006\u30a2\u30bb\u30f3\u30d6\u30eb\u3057\u305f\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u3067\u3059\u30021 \u884c\u304c\u30b0\u30ec\u30fc\u3067\u30cf\u30a4\u30e9\u30a4\u30c8\u3055\u308c\u3066\u3044\u307e\u3059\u3002\" width=\"600\" height=\"235\" \/><figcaption id=\"caption-attachment-132843\" class=\"wp-caption-text\">\u56f3 6. \u6700\u65b0\u306e Bifrost \u30b5\u30f3\u30d7\u30eb\u306e\u9006\u30a2\u30bb\u30f3\u30d6\u30eb\u30b3\u30fc\u30c9\u3002\u6539\u5909\u3055\u308c\u305f RC4 \u6697\u53f7\u306e\u53ef\u80fd\u6027\u304c\u3042\u308b<\/figcaption><\/figure>\n<p>\u305d\u306e\u5f8c\u3053\u306e\u30de\u30eb\u30a6\u30a7\u30a2\u306f <span style=\"font-family: 'courier new', courier, monospace;\">168.95.1[.]1<\/span> \u306e IP \u30a2\u30c9\u30ec\u30b9\u3092\u6301\u3064\u53f0\u6e7e\u3092\u62e0\u70b9\u3068\u3059\u308b\u30d1\u30d6\u30ea\u30c3\u30af DNS \u30ea\u30be\u30eb\u30d0\u30fc\u3078\u306e\u63a5\u7d9a\u3092\u8a66\u307f\u307e\u3059 (\u56f3 7)\u3002<\/p>\n<figure id=\"attachment_132845\" aria-describedby=\"caption-attachment-132845\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-132845 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/02\/word-image-897630-132830-7.png\" alt=\"\u753b\u50cf 7 \u306f 2 \u679a\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u3092\u91cd\u306d\u305f\u3082\u306e\u3067\u3059\u3002\u4e0a\u306e\u753b\u9762\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u304c\u30c7\u30d0\u30c3\u30ac\u30fc\u306e\u51fa\u529b\u5185\u5bb9\u3067\u3059\u3002\u8d64\u3044\u56db\u89d2\u3067\u5f37\u8abf\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u306e\u306f\u30d1\u30d6\u30ea\u30c3\u30af DNS \u30ea\u30be\u30eb\u30d0\u30fc\u3067\u3059\u3002\u4e0b\u306e\u753b\u9762\u306f\u9006\u30a2\u30bb\u30f3\u30d6\u30eb\u3055\u308c\u305f\u30b3\u30fc\u30c9\u3067\u3001\u8d64\u3044\u56db\u89d2\u306e\u30cf\u30a4\u30e9\u30a4\u30c8\u3067 DNS \u30b5\u30fc\u30d0\u30fc\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\" width=\"700\" height=\"811\" \/><figcaption id=\"caption-attachment-132845\" class=\"wp-caption-text\">\u56f3 7. \u30c7\u30d0\u30c3\u30ac\u30fc\u306e\u51fa\u529b\u3068\u9006\u30a2\u30bb\u30f3\u30d6\u30eb\u3055\u308c\u305f\u30b3\u30fc\u30c9\u304b\u3089\u30de\u30eb\u30a6\u30a7\u30a2\u304c <span style=\"font-family: 'courier new', courier, monospace;\">168.95.1[.]1<\/span> \u306e\u30d1\u30d6\u30ea\u30c3\u30af DNS \u30ea\u30be\u30eb\u30d0\u30fc\u306b\u63a5\u7d9a\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u5224\u660e<\/figcaption><\/figure>\n<p>\u56f3 8 \u306e\u30ed\u30b0\u304b\u3089\u3082\u5206\u304b\u308b\u3088\u3046\u306b\u3001\u3053\u306e\u30de\u30eb\u30a6\u30a7\u30a2\u306f <span style=\"font-family: 'courier new', courier, monospace;\">168.95[.]1.1<\/span> \u306b\u3042\u308b\u30d1\u30d6\u30ea\u30c3\u30af DNS \u30ea\u30be\u30eb\u30d0\u30fc\u3092\u4f7f\u3044\u3001\u30c9\u30e1\u30a4\u30f3 <span style=\"font-family: 'courier new', courier, monospace;\">download.vmfare[.]com<\/span> \u306e\u540d\u524d\u3092\u89e3\u6c7a\u3059\u308b DNS \u30af\u30a8\u30ea\u30fc\u3092\u958b\u59cb\u3057\u307e\u3059\u3002\u3053\u306e\u30b9\u30c6\u30c3\u30d7\u306f\u3001\u30de\u30eb\u30a6\u30a7\u30a2\u304c\u610f\u56f3\u3057\u305f\u5b9b\u5148\u306b\u3046\u307e\u304f\u63a5\u7d9a\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u306b\u6975\u3081\u3066\u91cd\u8981\u3067\u3059\u3002<\/p>\n<figure id=\"attachment_132847\" aria-describedby=\"caption-attachment-132847\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-132847 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/02\/word-image-903714-132830-8.png\" alt=\"\u753b\u50cf 8 \u306f\u591a\u6570\u306e\u30b3\u30fc\u30c9\u304b\u3089\u306a\u308b\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u3067\u3059\u3002\u8d64\u3044\u56db\u89d2\u306f\u3001DNS \u30af\u30a8\u30ea\u30fc\u3092\u958b\u59cb\u3057\u3066\u3044\u308b\u30de\u30eb\u30a6\u30a7\u30a2\u3092\u5f37\u8abf\u8868\u793a\u3057\u3066\u3044\u307e\u3059\u3002\" width=\"900\" height=\"126\" \/><figcaption id=\"caption-attachment-132847\" class=\"wp-caption-text\">\u56f3 8. <span style=\"font-family: 'courier new', courier, monospace;\">download.vmfare[.]com<\/span> \u30c9\u30e1\u30a4\u30f3\u306e\u540d\u524d\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b DNS \u30af\u30a8\u30ea\u30fc\u3092\u958b\u59cb\u3059\u308b\u30de\u30eb\u30a6\u30a7\u30a2<\/figcaption><\/figure>\n<p>\u30de\u30eb\u30a6\u30a7\u30a2\u304c IP \u30a2\u30c9\u30ec\u30b9\u306e\u4ee3\u308f\u308a\u306b\u3053\u3046\u3057\u305f\u6b3a\u779e\u7684\u30c9\u30e1\u30a4\u30f3\u540d\u3092 C2 \u306b\u63a1\u7528\u3059\u308b\u3053\u3068\u306f\u3088\u304f\u3042\u308a\u307e\u3059\u3002\u691c\u51fa\u3092\u56de\u907f\u3057\u3066\u30ea\u30b5\u30fc\u30c1\u30e3\u30fc\u306b\u3088\u308b\u60aa\u610f\u306e\u3042\u308b\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u306e\u63a5\u7d9a\u5143\u8ffd\u8de1\u3092\u59a8\u5bb3\u3059\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n<h2><a id=\"post-132856-_cp03m7w05xh1\"><\/a>\u30a2\u30bf\u30c3\u30af \u30b5\u30fc\u30d5\u30a7\u30b9\u306e\u62e1\u5927<\/h2>\n<p>\u8abf\u3079\u3066\u307f\u308b\u3068\u3001<span style=\"font-family: 'courier new', courier, monospace;\">45.91.82[.]127<\/span> \u306e\u60aa\u610f\u306e\u3042\u308b IP \u30a2\u30c9\u30ec\u30b9\u306f\u3001ARM \u7248\u306e Bifrost \u3082\u30db\u30b9\u30c8\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002\u3053\u306e ARM \u7248\u306e\u5b58\u5728\u306f\u653b\u6483\u8005\u306b\u3088\u308b\u30a2\u30bf\u30c3\u30af \u30b5\u30fc\u30d5\u30a7\u30b9\u62e1\u5927\u306e\u610f\u56f3\u3092\u793a\u3059\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>ARM \u7248\u306e\u6a5f\u80fd\u306f\u3001\u672c\u7a3f\u3067\u5206\u6790\u3057\u305f x86 \u7248\u306e\u305d\u308c\u3068\u540c\u3058\u3067\u3059\u3002ARM \u7248\u306e\u30de\u30eb\u30a6\u30a7\u30a2\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u3067\u3001\u653b\u6483\u8005\u306f x86 \u30d9\u30fc\u30b9\u306e\u30de\u30eb\u30a6\u30a7\u30a2\u3068\u4e92\u63db\u6027\u306e\u306a\u3044\u30c7\u30d0\u30a4\u30b9\u3078\u3068\u653b\u6483\u306e\u624b\u3092\u5e83\u3052\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002ARM \u30d9\u30fc\u30b9 \u30c7\u30d0\u30a4\u30b9\u306e\u666e\u53ca\u306b\u3064\u308c\u3001\u30b5\u30a4\u30d0\u30fc\u72af\u7f6a\u8005\u3089\u306f\u81ea\u3089\u306e\u6226\u8853\u3092 ARM \u30d9\u30fc\u30b9 \u30de\u30eb\u30a6\u30a7\u30a2\u3092\u542b\u3081\u305f\u3082\u306e\u306b\u5909\u3048\u3066\u3044\u304f\u3053\u3068\u3067\u3057\u3087\u3046\u3002\u305d\u3046\u3059\u308c\u3070\u653b\u6483\u306f\u3088\u308a\u5f37\u529b\u306b\u306a\u308a\u3001\u3088\u308a\u591a\u304f\u306e\u6a19\u7684\u3092\u624b\u306b\u304b\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2><a id=\"post-132856-_2atcio4xx557\"><\/a>Bifrost \u306e\u6355\u6349<\/h2>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306e <a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/advanced-wildfire\" target=\"_blank\" rel=\"noopener\">Advanced WildFire<\/a> \u306f Bifrost \u306e\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u304c\u6700\u8fd1\u6025\u5897\u3057\u305f\u3053\u3068\u3092\u691c\u51fa\u3057\u307e\u3057\u305f\u3002\u3053\u3053\u6570\u30f6\u6708\u9593\u3067\u3001WildFire \u306f 100 \u500b\u4ee5\u4e0a\u306e Bifrost \u30b5\u30f3\u30d7\u30eb\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 (\u30cf\u30c3\u30b7\u30e5) \u3092\u691c\u51fa\u3057\u3066\u3044\u307e\u3059 (\u56f3 9)\u3002<\/p>\n<figure id=\"attachment_132849\" aria-describedby=\"caption-attachment-132849\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-132849 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/02\/word-image-907064-132830-9.png\" alt=\"\u753b\u50cf 9 \u306f\u30012023 \u5e74 10 \u6708\u304b\u3089 2024 \u5e74 1 \u6708\u307e\u3067\u306e Bifrost \u306e\u30b5\u30f3\u30d7\u30eb\u691c\u51fa\u6570\u306e\u68d2\u30b0\u30e9\u30d5\u3067\u3059\u30022023 \u5e74 11 \u6708\u306b\u9855\u8457\u306a\u5897\u52a0\u304c\u898b\u3089\u308c\u307e\u3059\u3002\" width=\"900\" height=\"247\" \/><figcaption id=\"caption-attachment-132849\" class=\"wp-caption-text\">\u56f3 9. Advanced WildFire\u30ec\u30dd\u30fc\u30c8\u3067\u306e Bifrost \u30b5\u30f3\u30d7\u30eb\u691c\u51fa\u6570 (2023 \u5e74 10 \u6708 \u301c 2024 \u5e74 1 \u6708)<\/figcaption><\/figure>\n<h2><a id=\"post-132856-_urrjuug34gt2\"><\/a>\u7d50\u8ad6<\/h2>\n<p>Bifrost RAT\u306f\u3001\u500b\u4eba\u306b\u3068\u3063\u3066\u3082\u7d44\u7e54\u306b\u3068\u3063\u3066\u3082\u3001\u4f9d\u7136\u3068\u3057\u3066\u91cd\u8981\u304b\u3064\u9032\u5316\u3059\u308b\u8105\u5a01\u3067\u3059\u3002\u30bf\u30a4\u30dd\u30b9\u30af\u30ef\u30c3\u30c6\u30a3\u30f3\u30b0\u306e\u3088\u3046\u306a\u6b3a\u779e\u7684\u30c9\u30e1\u30a4\u30f3\u6226\u7565\u3092\u63a1\u7528\u3059\u308b\u65b0\u305f\u306a\u4e9c\u7a2e\u306e\u767b\u5834\u306b\u3088\u308a\u3001\u6700\u8fd1\u6025\u5897\u3057\u305f Bifrost \u306e\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u306f\u3053\u306e\u30de\u30eb\u30a6\u30a7\u30a2\u306e\u5371\u967a\u306a\u6027\u8cea\u3092\u6d6e\u304d\u5f6b\u308a\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>Bifrost \u306e\u3088\u3046\u306a\u30de\u30eb\u30a6\u30a7\u30a2\u306e\u8ffd\u8de1\u3068\u5bfe\u7b56\u306f\u3001\u6a5f\u5fae\u30c7\u30fc\u30bf\u3092\u4fdd\u8b77\u3057\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf \u30b7\u30b9\u30c6\u30e0\u306e\u5b8c\u5168\u6027\u3092\u7dad\u6301\u3059\u308b\u4e0a\u3067\u6975\u3081\u3066\u91cd\u8981\u3067\u3059\u3002\u305d\u3046\u3057\u305f\u3053\u3068\u306f\u3001\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3068\u305d\u306e\u5f8c\u306e\u6f5c\u5728\u7684\u88ab\u5bb3\u306e\u6700\u5c0f\u5316\u306b\u3082\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306e\u304a\u5ba2\u69d8\u306f\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/advanced-wildfire\" target=\"_blank\" rel=\"noopener\">Advanced WildFire<\/a>\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/advanced-url-filtering\" target=\"_blank\" rel=\"noopener\">Advanced URL Filtering<\/a>\u3001<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/dns-security\" target=\"_blank\" rel=\"noopener\">DNS Security<\/a> \u306a\u3069\u306e<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/security-subscriptions\" target=\"_blank\" rel=\"noopener\">\u30af\u30e9\u30a6\u30c9\u914d\u4fe1\u578b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b5\u30fc\u30d3\u30b9<\/a>\u3092\u6709\u52b9\u306b\u3057\u305f<a href=\"https:\/\/www.paloaltonetworks.jp\/network-security\/next-generation-firewall\" target=\"_blank\" rel=\"noopener\">\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb (NGFW) <\/a> \u306b\u3088\u308a\u3001\u672c\u7a3f\u3067\u53d6\u308a\u4e0a\u3052\u305f\u8105\u5a01\u304b\u3089\u306e\u4fdd\u8b77\u3092\u53d7\u3051\u3066\u3044\u307e\u3059\u3002<a href=\"https:\/\/www.paloaltonetworks.jp\/cortex\/cortex-xdr\" target=\"_blank\" rel=\"noopener\">Cortex XDR<\/a> \u306f\u3001Bifrost \u304a\u3088\u3073\u305d\u308c\u306b\u95a2\u9023\u3059\u308b\u60aa\u610f\u306e\u3042\u308b\u52d5\u4f5c\u3092\u691c\u51fa\u30fb\u9632\u6b62\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<p>\u4fb5\u5bb3\u306e\u61f8\u5ff5\u304c\u3042\u308a\u5f0a\u793e\u306b\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u30ec\u30b9\u30dd\u30f3\u30b9\u306b\u95a2\u3059\u308b\u3054\u76f8\u8ac7\u3092\u306a\u3055\u308a\u305f\u3044\u5834\u5408\u306f\u3001<a href=\"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\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\u69d8\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\u69d8\u306b\u4fdd\u8b77\u3092\u8fc5\u901f\u306b\u63d0\u4f9b\u3057\u3001\u60aa\u610f\u306e\u3042\u308b\u30b5\u30a4\u30d0\u30fc\u653b\u6483\u8005\u3092\u4f53\u7cfb\u7684\u306b\u963b\u5bb3\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-132856-_7swbl1wykebo\"><\/a>\u8b1d\u8f9e<\/h2>\n<p>\u672c\u7a3f\u57f7\u7b46\u306b\u3042\u305f\u308a\u3001Bradley Duncan \u6c0f\u306b\u8cb4\u91cd\u306a\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3068\u30a2\u30c9\u30d0\u30a4\u30b9\u3068\u3044\u305f\u3060\u3044\u305f\u3053\u3068\u3092\u611f\u8b1d\u7533\u3057\u4e0a\u3052\u307e\u3059\u3002<\/p>\n<h2><a id=\"post-132856-_r8z4o6gbqnbw\"><\/a>IoC (\u4fb5\u5bb3\u6307\u6a19)<\/h2>\n<h3><a id=\"post-132856-_466g08uicjsn\"><\/a> \u30de\u30eb\u30a6\u30a7\u30a2 \u30b5\u30f3\u30d7\u30eb<\/h3>\n<table style=\"width: 100%;\">\n<tbody>\n<tr>\n<td style=\"text-align: center;\"><b>SHA256 \u30cf\u30c3\u30b7\u30e5<\/b><\/td>\n<td style=\"text-align: center;\"><b>\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">8e85cb6f2215999dc6823ea3982ff4376c2cbea53286e95ed00250a4a2fe4729<\/span><\/td>\n<td><span style=\"font-weight: 400;\">x86<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">2aeb70f72e87a1957e3bc478e1982fe608429cad4580737abe58f6d78a626c05<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ARM<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><a id=\"post-132856-_nqr64m5hr9fe\"><\/a>\u30c9\u30e1\u30a4\u30f3\u3068 IP \u30a2\u30c9\u30ec\u30b9<\/h3>\n<ul>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">download.vmfare[.]com<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">45.91.82[.]127<\/span><\/li>\n<\/ul>\n<h2><a id=\"post-132856-_fmusyarvqz7d\"><\/a>\u8ffd\u52a0\u30ea\u30bd\u30fc\u30b9<\/h2>\n<ul>\n<li><a href=\"https:\/\/jp.security.ntt\/resources\/BlackTech_2021.pdf\" target=\"_blank\" rel=\"noopener\">Report on APT Attacks by BlackTech [PDF]<\/a> \u2014 NTT Security Holdings Corporation, Japan SOC<\/li>\n<\/ul>\n<p class=\"p1\"><i>2024-03-25 14:45 JST \u82f1\u8a9e\u7248\u66f4\u65b0\u65e5 2024-03-21 09:05 PDT \u306e\u5185\u5bb9\u3092\u53cd\u6620\u3057\u3001DNS Security \u306b\u3088\u308b\u4fdd\u8b77\u3092\u8ffd\u8a18\u00a0<\/i><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981 \u79c1\u305f\u3061\u306f\u6700\u8fd1\u3001Bifrost (\u5225\u540d Bifrose) \u306e\u65b0\u305f\u306a Linux \u4e9c\u7a2e\u3092\u767a\u898b\u3057\u305f\u306e\u3067\u3059\u304c\u3001\u3053\u308c\u306f\u691c\u51fa\u56de\u907f\u306b\u5275\u610f\u306b\u5bcc\u3080\u6280\u8853\u3092\u4f7f\u3046\u30de\u30eb\u30a6\u30a7\u30a2\u306e\u597d\u4f8b\u3068\u3044\u3048\u308b\u3082\u306e\u3067\u3057\u305f\u3002\u540c\u4e9c\u7a2e\u306f\u3001\u6b63\u898f VMware \u30c9\u30e1\u30a4\u30f3\u3092<\/p>\n","protected":false},"author":323,"featured_media":134011,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[1974,4428],"tags":[4553,4619,4621,4579],"product_categories":[4441,4443,4444,4446,4448,4456],"coauthors":[3877,3876],"class_list":["post-132856","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-malware-ja","category-threat-research-ja","tag-linux-ja","tag-linux-malware-ja","tag-remote-access-trojan-ja","tag-sandbox-ja","product_categories-advanced-dns-security-ja","product_categories-advanced-url-filtering-ja","product_categories-advanced-wildfire-ja","product_categories-cloud-delivered-security-services-ja","product_categories-cortex-xdr-ja","product_categories-next-generation-firewall-ja"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO 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