{"id":124121,"date":"2022-07-21T02:07:14","date_gmt":"2022-07-21T09:07:14","guid":{"rendered":"https:\/\/unit42.paloaltonetworks.com\/?p=124121"},"modified":"2022-07-21T02:07:14","modified_gmt":"2022-07-21T09:07:14","slug":"digium-phones-web-shell","status":"publish","type":"post","link":"https:\/\/origin-unit42.paloaltonetworks.com\/ja\/digium-phones-web-shell\/","title":{"rendered":"Digium IP\u96fb\u8a71\u3078\u306e\u653b\u6483: Web\u30b7\u30a7\u30eb\u57cb\u3081\u8fbc\u307f\u306e\u8003\u5bdf"},"content":{"rendered":"<h2><a id=\"post-124121-_plxiffjedkbx\"><\/a>\u6982\u8981<\/h2>\n<p>\u4e00\u822c\u306b\u30de\u30eb\u30a6\u30a7\u30a2\u958b\u767a\u8005\u306f\u3001\u30ea\u30e2\u30fc\u30c8\u304b\u3089\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u5b9f\u884c\u3084\u30b3\u30de\u30f3\u30c9\u5b9f\u884c\u306e\u8db3\u639b\u304b\u308a\u3068\u3057\u3066\u3001\u307e\u305aWeb\u30b5\u30fc\u30d0\u30fc\u306bWeb\u30b7\u30a7\u30eb\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\u30022020\u5e7411\u6708\u3001<a href=\"https:\/\/research.checkpoint.com\/2020\/inj3ctor3-operation-leveraging-asterisk-servers-for-monetization\/\">INJ3CTOR3<\/a>\u306e\u30aa\u30da\u30ec\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u5e45\u5e83\u304f\u5229\u7528\u3055\u308c\u3066\u3044\u308bVoIP PBX\u30b7\u30b9\u30c6\u30e0\u3067\u3042\u308bSangoma PBX\u3092\u6a19\u7684\u3068\u3057\u3001\u305d\u306eWeb\u30b5\u30fc\u30d0\u30fc\u306bWeb\u30b7\u30a7\u30eb\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3057\u305f\u3002\u6700\u8fd1\u3067\u306f\u3001<a href=\"https:\/\/github.com\/FreePBX\/digium_phones\">Digium\u306eIP\u96fb\u8a71<\/a>\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b<a href=\"https:\/\/www.voip-info.org\/elastix\/\">Elastix<\/a>\u30b7\u30b9\u30c6\u30e0\u304c\u5225\u306e\u30aa\u30da\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u6a19\u7684\u3068\u306a\u3063\u305f\u3053\u3068\u3092Unit 42\u306f\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u653b\u6483\u8005\u306f\u3001Web\u30b7\u30a7\u30eb\u3092\u57cb\u3081\u8fbc\u307f\u3001\u6a19\u7684\u306eDigium\u96fb\u8a71\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2(PHP\u3067\u8a18\u8ff0\u3055\u308c\u305fFreePBX\u30e2\u30b8\u30e5\u30fc\u30eb)\u5185\u90e8\u306e\u8ffd\u52a0\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u30fb\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u3001\u30c7\u30fc\u30bf\u3092\u6d41\u51fa\u3055\u305b\u3066\u3044\u307e\u3057\u305f\u3002\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\u304b\u3089\u8003\u3048\u308b\u3068\u3001\u305d\u306eWeb\u30b7\u30a7\u30eb\u306f\u3001Rest Phone Apps (restapps)\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u3042\u308b\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c(RCE)\u8106\u5f31\u6027<a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2021-45461\">CVE-2021-45461<\/a>\u3068\u76f8\u95a2\u304c\u3042\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n<p>\u672c\u7a3f\u57f7\u7b46\u6642\u70b9\u3067\u30012021\u5e7412\u6708\u4e0b\u65ec\u304b\u30892022\u5e743\u6708\u672b\u307e\u3067\u306e\u671f\u9593\u306b\u3001\u3053\u306e\u30d5\u30a1\u30df\u30ea\u306e\u56fa\u6709\u306e\u30de\u30eb\u30a6\u30a7\u30a2\u30b5\u30f3\u30d7\u30eb\u304c50\u4e07\u4ee5\u4e0a\u3082\u78ba\u8a8d\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30de\u30eb\u30a6\u30a7\u30a2\u306f\u3001\u8907\u6570\u30ec\u30a4\u30e4\u306e\u96e3\u8aad\u5316\u3055\u308c\u305fPHP\u30d0\u30c3\u30af\u30c9\u30a2\u3092Web\u30b5\u30fc\u30d0\u30fc\u306e\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3001\u65b0\u3057\u3044\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u5b9f\u884c\u3057\u3001\u30db\u30b9\u30c8\u30b7\u30b9\u30c6\u30e0\u3092\u518d\u611f\u67d3\u3055\u305b\u308b\u305f\u3081\u306e\u53cd\u5fa9\u30bf\u30b9\u30af\u3092\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3057\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u3053\u306e\u30de\u30eb\u30a6\u30a7\u30a2\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4fb5\u5bb3\u30a4\u30f3\u30b8\u30b1\u30fc\u30bf(IoC)\u306b\u57fa\u3065\u3044\u305f\u3001\u30b7\u30b0\u30cd\u30c1\u30e3\u30d9\u30fc\u30b9\u306e\u9632\u5fa1\u3092\u56de\u907f\u3059\u308b\u305f\u3081\u306b\u3001\u30de\u30eb\u30a6\u30a7\u30a2\u306e\u5404\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u306b\u30e9\u30f3\u30c0\u30e0\u306a\u30b8\u30e3\u30f3\u30af\u6587\u5b57\u5217\u3092\u57cb\u3081\u8fbc\u307f\u307e\u3059\u3002<\/p>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306e<a href=\"https:\/\/www.paloaltonetworks.com\/network-security\/next-generation-firewall\">\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/a>\u3092\u3054\u5229\u7528\u306e\u304a\u5ba2\u69d8\u306f\u30af\u30e9\u30a6\u30c9\u578b\u8105\u5a01\u89e3\u6790\u30b5\u30fc\u30d3\u30b9<a href=\"https:\/\/www.paloaltonetworks.com\/products\/secure-the-network\/wildfire\">WildFire<\/a>\u3068<a href=\"https:\/\/www.paloaltonetworks.com\/products\/secure-the-network\/subscriptions\/threat-prevention\">\u8105\u5a01\u9632\u5fa1<\/a>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u306b\u3088\u308a\u540c\u30de\u30eb\u30a6\u30a7\u30a2\u304b\u3089\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<table style=\"width: 82.0015%;\">\n<tbody>\n<tr>\n<td style=\"width: 46.2151%;\"><span style=\"font-weight: 400;\">\u672c\u7a3f\u3067\u89e3\u8aac\u3059\u308bCVE<\/span><\/td>\n<td style=\"width: 397.61%;\"><a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2021-45461\"><span style=\"font-weight: 400;\">CVE-2021-45461<\/span><\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u76ee\u6b21<\/h2>\n<p><a href=\"#Background\">Digium\u306eAsterisk\u3092\u6a19\u7684\u3068\u3057\u305f\u60aa\u610f\u3042\u308b\u6d3b\u52d5\u306e\u80cc\u666f<\/a><br \/>\n<a href=\"#Attack-Vector\">\u653b\u6483\u30d9\u30af\u30c8\u30eb<\/a><br \/>\n<a href=\"#Initial-Dropper\">\u521d\u671f\u30c9\u30ed\u30c3\u30d1\u30fc<\/a><br \/>\n<a href=\"#Web-Shell\">Web\u30b7\u30a7\u30eb<\/a><br \/>\n<a href=\"#Configuration-File\">\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb<\/a><br \/>\n<a href=\"#Persistence-Mechanism\">\u6c38\u7d9a\u5316\u30e1\u30ab\u30cb\u30ba\u30e0<\/a><br \/>\n<a href=\"#Conclusion\">\u7d50\u8ad6<\/a><br \/>\n<a href=\"#Indicators-of-Compromise\">IoC<\/a><br \/>\n<a href=\"#Additional-Resources\">\u8ffd\u52a0\u306e\u30ea\u30bd\u30fc\u30b9<\/a><\/p>\n<h2><a id=\"Background\"><\/a>Digium\u306eAsterisk\u3092\u6a19\u7684\u3068\u3057\u305f\u60aa\u610f\u3042\u308b\u6d3b\u52d5\u306e\u80cc\u666f<\/h2>\n<p>\u6700\u8fd1\u3001WildFire\u30c1\u30fc\u30e0\u306f\u3001\u540c\u4e00\u306e\u30b5\u30f3\u30d7\u30eb\u30d5\u30a1\u30df\u30ea\u304b\u3089\u9001\u4fe1\u3055\u308c\u3066\u3044\u308b\u3068\u601d\u308f\u308c\u308b\u5927\u91cf\u306e\u60aa\u610f\u3042\u308b\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002\u5177\u4f53\u7684\u306b\u306f\u30012021\u5e7412\u6708\u4e2d\u65ec\u304b\u30892022\u5e743\u6708\u672b\u307e\u3067\u306e\u671f\u9593\u306b\u3001\u56fa\u6709\u306e\u30b5\u30f3\u30d7\u30eb\u309250\u4e07\u4ee5\u4e0a\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u7570\u5e38\u306a\u6d3b\u52d5\u306f\u3001VoIP\u96fb\u8a71\u7528\u306b\u5e45\u5e83\u304f\u63a1\u7528\u3055\u308c\u3066\u3044\u308bDigium\u306e\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9Asterisk\u901a\u4fe1\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3092\u6a19\u7684\u3068\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-124020 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/07\/Screen-Shot-2022-07-14-at-5.31.13-PM-ja.png\" alt=\"IP PBX\u306eSIP\u30c8\u30e9\u30f3\u30ad\u30f3\u30b0: VoIP\u30d7\u30ed\u30d0\u30a4\u30c0 &gt; \u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8 &gt; \u30aa\u30f3\u30d7\u30ec\u30df\u30b9\u306eIP-PBX &gt; \u673a\u4e0a\u306e\u96fb\u8a71\" width=\"900\" height=\"361\" \/><figcaption class=\"wp-caption-text\">\u56f31 IP PBX\u96fb\u8a71\u30b7\u30b9\u30c6\u30e0\u306f\u96fb\u8a71\u306e\u63a5\u7d9a\u3067SIP\u30c8\u30e9\u30f3\u30af\u306b\u4f9d\u5b58\u3057\u3066\u3044\u308b \u51fa\u5178: <a href=\"https:\/\/www.nextiva.com\/blog\/what-is-ip-pbx.html\">https:\/\/www.nextiva.com\/blog\/what-is-ip-pbx.html<\/a><\/figcaption><\/figure>\n<p>Elastix\u306f\u3001\u7d71\u5408\u901a\u4fe1\u30b5\u30fc\u30d0\u30fc\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u7528\u306e\u6700\u5927\u306e\u30aa\u30fc\u30d7\u30f3 \u30bd\u30fc\u30b9\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2 \u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3067\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30c8\u30b3\u30eb(IP)\u3001\u69cb\u5185\u4ea4\u63db\u6a5f(PBX)\u3001\u96fb\u5b50\u30e1\u30fc\u30eb\u3001IM\u3001\u30d5\u30a1\u30c3\u30af\u30b9\u3001\u30b3\u30e9\u30dc\u30ec\u30fc\u30b7\u30e7\u30f3\u6a5f\u80fd\u3092\u3059\u3079\u3066\u642d\u8f09\u3057\u3066\u3044\u307e\u3059\u3002Elastix\u306b\u306f\u3001Web\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3084\u4e88\u6e2c\u30c0\u30a4\u30e4\u30eb\u3092\u5099\u3048\u305f\u30b3\u30fc\u30eb \u30bb\u30f3\u30bf\u30fc \u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u6a5f\u80fd\u306a\u3069\u3082\u542b\u307e\u308c\u307e\u3059\u3002Elastix\u306e\u6a5f\u80fd\u306f\u3001Asterisk\u3001FreePBX\u3001HylaFAX\u3001Openfire\u3001Postfix\u306a\u3069\u306e\u30aa\u30fc\u30d7\u30f3 \u30bd\u30fc\u30b9 \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u30d9\u30fc\u30b9\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>FreePBX\u306f\u3001\u4e16\u754c\u3067\u6700\u3082\u5e45\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9IP PBX\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3067\u3001\u7d44\u7e54\u306b\u30aa\u30fc\u30eb\u30a4\u30f3\u30ef\u30f3\u306e\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002FreePBX\u306f\u3001\u7121\u6599\u3067\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3001\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3067\u304d\u3001\u96fb\u8a71\u30b7\u30b9\u30c6\u30e0\u306e\u69cb\u7bc9\u306b\u5fc5\u8981\u306a\u57fa\u672c\u7684\u8981\u7d20\u3059\u3079\u3066\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306fSangoma\u3068\u5f37\u56fa\u306a\u30b0\u30ed\u30fc\u30d0\u30eb\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306e\u51fa\u8cc7\u306b\u3088\u308a\u958b\u767a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u76f4\u611f\u7684\u306a\u30e2\u30b8\u30e5\u30fc\u30eb\u5f0f\u30b0\u30e9\u30d5\u30a3\u30ab\u30eb \u30e6\u30fc\u30b6\u30fc \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9(GUI)\u3092\u7279\u9577\u3068\u3057\u3001Asterisk\u306e\u6d3b\u7528\u306b\u3088\u308a\u5c0e\u5165\u3084\u5229\u7528\u304c\u5bb9\u6613\u3067\u3059\u3002<span style=\"font-family: 'courier new', courier, monospace;\"><a href=\"https:\/\/github.com\/FreePBX\/digium_phones\">digium_phones<\/a><\/span>\u306f\u3001PHP\u3067\u8a18\u8ff0\u3055\u308c\u305fFreePBX\u30e2\u30b8\u30e5\u30fc\u30eb\u3067\u3059\u3002<\/p>\n<p>Unit 42\u304c\u6700\u8fd1\u78ba\u8a8d\u3057\u305f\u60aa\u610f\u306e\u3042\u308b\u6d3b\u52d5\u306f\u30012\u5e74\u524d\u306bCheck Point Research\u306b\u3088\u3063\u3066\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u305f<a href=\"https:\/\/research.checkpoint.com\/2020\/inj3ctor3-operation-leveraging-asterisk-servers-for-monetization\">INJ3CTOR3\u30ec\u30dd\u30fc\u30c8<\/a>\u3067\u8aac\u660e\u3055\u308c\u3066\u3044\u308b\u7279\u5fb4\u3068\u985e\u4f3c\u6027\u304c\u3042\u308a\u3001\u3053\u306e\u653b\u6483\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u306e\u5fa9\u6d3b\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u30022021\u5e7412\u6708\u306bFreePBX\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30d5\u30a9\u30fc\u30e9\u30e0\u306b1\u3064\u306e<a href=\"https:\/\/community.freepbx.org\/t\/0-day-freepbx-exploit\/80092\">\u30ec\u30dd\u30fc\u30c8<\/a>\u304c\u6295\u7a3f\u3055\u308c\u305f\u5f8c\u30012022\u5e741\u6708\u306b\u5225\u306e<a href=\"https:\/\/community.freepbx.org\/t\/k-php-a-restapps-malicious-script\/80399\/21\">\u30ec\u30dd\u30fc\u30c8<\/a>\u304c\u6295\u7a3f\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u306e\u30ec\u30dd\u30fc\u30c8\u306f\u3001\u3053\u308c\u306f\u307e\u3055\u306b\u4ee5\u524d\u306e\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u306e\u5fa9\u6d3b\u3067\u3042\u308b\u3068\u3044\u3046\u5224\u65ad\u3067\u4e00\u81f4\u3057\u3066\u3044\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001INJ3CTOR3\u30ec\u30dd\u30fc\u30c8(2020\u5e7411\u67085\u65e5\u4ed8\u3051)\u306e\u56f312\u300cThe attacker's web panel(\u653b\u6483\u8005\u306eWeb\u30d1\u30cd\u30eb)\u300d\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u4f7f\u7528\u53ef\u80fd\u306a8\u3064\u306e\u30b3\u30de\u30f3\u30c9\u304c\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30b3\u30de\u30f3\u30c9\u306f\u3001Denis Soloviov\u3089\u306b\u3088\u308bFreePBX\u30b3\u30df\u30e5\u30cb\u30c6\u30a3 \u30d5\u30a9\u30fc\u30e9\u30e0 \u30b9\u30ec\u30c3\u30c9\u300cK.php - a RestApps malicious script(K.php - \u60aa\u610f\u3042\u308bRestApps\u30b9\u30af\u30ea\u30d7\u30c8)\u300d\u6295\u7a3f 21\/74 (2022\u5e741\u670812\u65e5\u4ed8\u3051)\u306b\u30ea\u30b9\u30c8\u3055\u308c\u3066\u3044\u308b\u3082\u306e\u3068\u307e\u3063\u305f\u304f\u540c\u3058\u3067\u3059\u3002<\/p>\n<ol>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">ls -la<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">ps -aux --forest<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">asterisk -rx 'core show channels'<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">asterisk -rx 'sip show peers'<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">cat \/etc\/elastix.conf<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">cat \/etc\/asterisk\/sip_additional.conf<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">cat \/etc\/asterisk\/extensions_custom.conf<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">cat \/etc\/amportal.conf<\/span><\/li>\n<\/ol>\n<p>\u3055\u3089\u306b\u8a73\u7d30\u306a\u8abf\u67fb\u3067\u3001Unit 42\u304c\u78ba\u8a8d\u3057\u305f\u6d3b\u52d5\u306f\u3001\u516c\u5f0f\u767a\u8868\u3055\u308c\u3066\u3044\u308b<a href=\"https:\/\/community.freepbx.org\/t\/security-issue-potential-rest-phone-apps-rce\/80109\">\u65e2\u77e5\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u554f\u984c<\/a>\u306e<a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2021-45461\">CVE-2021-45461<\/a> <a href=\"https:\/\/wiki.freepbx.org\/display\/FOP\/2021-12-21+SECURITY%3A+Potential+Rest+Phone+Apps+RCE\">Potential Rest Phone Apps RCE<\/a> (\u6f5c\u5728\u7684\u306aRest Phone Apps RCE)\u304c\u5f15\u304d\u8d77\u3053\u3057\u305f\u53ef\u80fd\u6027\u304c\u3042\u308b\u3053\u3068\u304c\u660e\u3089\u304b\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u8106\u5f31\u6027\u306f\u3001Rest Phone Apps (restapps)\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u5b58\u5728\u3057\u3001URL\u5909\u6570\u306e\u901a\u904e\u3092\u53ef\u80fd\u306b\u3057\u3066\u3057\u307e\u3046\u305f\u3081\u3001\u30ea\u30e2\u30fc\u30c8\u30b3\u30fc\u30c9\u5b9f\u884c(RCE)\u306e\u30b7\u30ca\u30ea\u30aa\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n<p>\u672c\u7a3f\u306fPHP Web\u30b7\u30a7\u30eb\u30d0\u30c3\u30af\u30c9\u30a2\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u6a19\u7684\u74b0\u5883\u5185\u3067\u8db3\u304c\u304b\u308a\u3092\u7bc9\u3053\u3046\u3068\u3059\u308b\u521d\u671f\u30c9\u30ed\u30c3\u30d1\u30fc \u30b7\u30a7\u30eb \u30b9\u30af\u30ea\u30d7\u30c8\u306e\u5185\u90e8\u6a5f\u69cb\u3092\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<h2><a id=\"Attack-Vector\"><\/a>\u653b\u6483\u30d9\u30af\u30c8\u30eb<\/h2>\n<figure style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-124012 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/07\/points-scored-3-ja.png\" alt=\"\u6700\u521d\u306e\u30b5\u30f3\u30d7\u30eb\u30bb\u30c3\u30c8\u3092\u5927\u304d\u304f2\u3064\u306e\u30b0\u30eb\u30fc\u30d7(\u30b0\u30eb\u30fc\u30d71\u3068\u30b0\u30eb\u30fc\u30d72)\u306b\u5206\u985e\u3067\u304d\u307e\u3057\u305f\u3002\u305d\u306e\u30b0\u30eb\u30fc\u30d7\u306e1\u3064(\u30b0\u30eb\u30fc\u30d72)\u306f\u3001\u3055\u3089\u306b2\u3064\u306e\u30b5\u30d6\u30b0\u30eb\u30fc\u30d7(A\u3068B)\u306b\u5206\u985e\u3055\u308c\u307e\u3059\u3002\u30b0\u30eb\u30fc\u30d71\u3068\u30b0\u30eb\u30fc\u30d72\u306f\u7570\u306a\u308b\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u653b\u6483\u30b9\u30af\u30ea\u30d7\u30c8(\u30b0\u30eb\u30fc\u30d72\u304c\u5f8c\u767a\u30d0\u30fc\u30b8\u30e7\u30f3)\u3092\u8868\u3059\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002\" width=\"900\" height=\"557\" \/><figcaption class=\"wp-caption-text\">\u56f32 \u30b5\u30f3\u30d7\u30eb\u30bb\u30c3\u30c8\u30922\u3064\u306e\u4e3b\u306a\u30b0\u30eb\u30fc\u30d7(\u30b0\u30eb\u30fc\u30d71\u3068\u30b0\u30eb\u30fc\u30d72)\u306b\u5206\u985e\u3057\u3001\u305d\u306e\u5272\u5408\u3092\u793a\u3057\u305f\u5186\u30b0\u30e9\u30d5\u3002\u30b0\u30eb\u30fc\u30d72\u304c\u5927\u52e2\u3092\u5360\u3081\u3066\u3044\u308b<\/figcaption><\/figure>\n<p>\u6700\u521d\u306e\u30b5\u30f3\u30d7\u30eb\u30bb\u30c3\u30c8\u3092\u5927\u304d\u304f2\u3064\u306e\u30b0\u30eb\u30fc\u30d7(\u30b0\u30eb\u30fc\u30d71\u3068\u30b0\u30eb\u30fc\u30d72)\u306b\u5206\u985e\u3067\u304d\u307e\u3057\u305f\u3002\u305d\u306e\u30b0\u30eb\u30fc\u30d7\u306e1\u3064(\u30b0\u30eb\u30fc\u30d72)\u306f\u3001\u3055\u3089\u306b2\u3064\u306e\u30b5\u30d6\u30b0\u30eb\u30fc\u30d7(A\u3068B)\u306b\u5206\u985e\u3055\u308c\u307e\u3059\u3002\u30b0\u30eb\u30fc\u30d71\u3068\u30b0\u30eb\u30fc\u30d72\u306f\u7570\u306a\u308b\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u653b\u6483\u30b9\u30af\u30ea\u30d7\u30c8(\u30b0\u30eb\u30fc\u30d72\u304c\u5f8c\u767a\u30d0\u30fc\u30b8\u30e7\u30f3)\u3092\u8868\u3059\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002\u30b5\u30d6\u30b0\u30eb\u30fc\u30d7A\u304a\u3088\u3073B\u306f\u30012\u3064\u306e\u6a19\u7684\u306e\u7570\u306a\u308b\u30af\u30e9\u30b9\u30bf\u3092\u8868\u3057\u307e\u3059\u3002<\/p>\n<table style=\"width: 90.6944%;\">\n<tbody>\n<tr>\n<td style=\"width: 43.5821%;\" rowspan=\"2\"><\/td>\n<td style=\"width: 328.358%; background-color: #9c9595;\" colspan=\"2\"><b>\u30b0\u30eb\u30fc\u30d7<\/b><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 28.3582%; background-color: #9c9595;\"><b>1<\/b><\/td>\n<td style=\"width: 300%; background-color: #9c9595;\"><b>2<\/b><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 43.5821%; background-color: #9c9595;\"><span style=\"font-weight: 400;\">\u30d8\u30c3\u30c0\u30fc<\/span><\/td>\n<td style=\"width: 28.3582%; background-color: #d4cdcd;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">ZenharPanel<\/span><\/td>\n<td style=\"width: 300%; background-color: #d4cdcd;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">Ask Master<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 43.5821%; background-color: #9c9595;\"><span style=\"font-weight: 400;\">\u300cSubmit (\u9001\u4fe1)\u300d\u30dc\u30bf\u30f3\u30e9\u30d9\u30eb<\/span><\/td>\n<td style=\"width: 28.3582%; background-color: #d4cdcd;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">ZenharR<\/span><\/td>\n<td style=\"width: 300%; background-color: #d4cdcd;\"><span style=\"font-weight: 400; font-family: 'courier new', courier, monospace;\">Ask<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: center;\"><span style=\"color: #999999; font-size: 10pt;\"><em>\u88681.2\u3064\u306e\u4e3b\u306a\u30b0\u30eb\u30fc\u30d7(\u30b0\u30eb\u30fc\u30d71\u3068\u30b0\u30eb\u30fc\u30d72)\u306e\u30d8\u30c3\u30c0\u30fc\u3068\u300cSubmit (\u9001\u4fe1)\u300d\u30dc\u30bf\u30f3\u30e9\u30d9\u30eb\u306b\u304a\u3051\u308b\u7279\u5fb4\u3092\u793a\u3057\u305f\u8868\u3002<\/em><\/span><\/p>\n<figure style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-124014 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/07\/word-image-81.png\" alt=\"\u521d\u671f\u30c9\u30ed\u30c3\u30d1\u30fc\u30b9\u30af\u30ea\u30d7\u30c8(\u4e9c\u7a2e1)\u306e\u30b3\u30fc\u30c9\u6982\u8981\u3002\" width=\"900\" height=\"310\" \/><figcaption class=\"wp-caption-text\">\u56f33a \u521d\u671f\u30c9\u30ed\u30c3\u30d1\u30fc\u30b9\u30af\u30ea\u30d7\u30c8(\u4e9c\u7a2e1)\u306e\u30b3\u30fc\u30c9\u6982\u8981<\/figcaption><\/figure>\n<figure style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-124016 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/07\/word-image-82.png\" alt=\"\u521d\u671f\u30c9\u30ed\u30c3\u30d1\u30fc\u30b9\u30af\u30ea\u30d7\u30c8(\u4e9c\u7a2e2)\u306e\u30b3\u30fc\u30c9\u6982\u8981\u3002\" width=\"900\" height=\"310\" \/><figcaption class=\"wp-caption-text\">\u56f33b \u521d\u671f\u30c9\u30ed\u30c3\u30d1\u30fc\u30b9\u30af\u30ea\u30d7\u30c8(\u4e9c\u7a2e2)\u306e\u30b3\u30fc\u30c9\u6982\u8981<\/figcaption><\/figure>\n<p>\u901a\u5e38\u3001\u521d\u671f\u30c9\u30ed\u30c3\u30d1\u30fc\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u306f\u5c0f\u3055\u3044\u3067\u3059\u3002<\/p>\n<ul>\n<li>12,750\u30d0\u30a4\u30c8\u306e\u30da\u30a4\u30ed\u30fc\u30c9(<span style=\"font-family: 'courier new', courier, monospace;\">hxxp[:\/\/]37[.]49[.]230[.]74\/z\/wr[.]php<\/span>\u304b\u3089\u30d5\u30a7\u30c3\u30c1)<\/li>\n<li>17,215\u30d0\u30a4\u30c8\u306e\u30da\u30a4\u30ed\u30fc\u30c9(<span style=\"font-family: 'courier new', courier, monospace;\">hxxp[:\/\/]37[.]49[.]230[.]74\/k[.]php<\/span>\u304b\u3089\u30d5\u30a7\u30c3\u30c1)<\/li>\n<\/ul>\n<p>\u3053\u308c\u306f\u3001PHP Web\u30b7\u30a7\u30eb\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u57cb\u3081\u8fbc\u3080\u30b7\u30a7\u30eb\u30b9\u30af\u30ea\u30d7\u30c8\u3067\u306f\u3088\u304f\u3042\u308b\u3053\u3068\u3067\u3059\u3002\u5e38\u306b\u3001\u30b3\u30fc\u30c9\u306f14\u884c\u3067\u3001\u7279\u5b9a\u306e\u91cd\u70b9\u9818\u57df\u3092\u96a0\u3059\u305f\u3081\u306b\u8907\u6570\u30ec\u30a4\u30e4\u30fc\u306eBase64\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306b\u30e9\u30c3\u30d7\u3055\u308c\u307e\u3059\u3002Base64\u3067\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u305f\u30da\u30a4\u30ed\u30fc\u30c9\u306e1\u3064\u306f\u8907\u88fd\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<figure style=\"width: 300px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-124018 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/07\/word-image-83-ja.png\" alt=\"SH &gt; ajax.php (Web\u30b7\u30a7\u30eb)\u3001.htaccess (\u8a2d\u5b9a)\u3001\u6c38\u7d9a\u30b9\u30af\u30ea\u30d7\u30c8\" width=\"300\" height=\"229\" \/><figcaption class=\"wp-caption-text\">\u56f34 \u521d\u671f\u30c9\u30ed\u30c3\u30d1\u30fc\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u6982\u8981<\/figcaption><\/figure>\n<h3><a id=\"Initial-Dropper\"><\/a>\u521d\u671f\u30c9\u30ed\u30c3\u30d1\u30fc<\/h3>\n<p>\u521d\u671f\u30c9\u30ed\u30c3\u30d1\u30fc\u306f\u30b7\u30a7\u30eb\u30b9\u30af\u30ea\u30d7\u30c8\u3067\u3001\u6b21\u306e2\u3064\u306e\u76ee\u7684\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u5185\u306e\u8907\u6570\u306e\u5834\u6240\u306b\u3001\u96e3\u8aad\u5316\u3055\u308c\u305fPHP\u30d0\u30c3\u30af\u30c9\u30a2\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b<\/li>\n<li>\u6b21\u306e\u65b9\u6cd5\u3067\u30a2\u30af\u30bb\u30b9\u3092\u7dad\u6301\u3059\u308b\n<ol>\n<li>\u8907\u6570\u306e\u30eb\u30fc\u30c8 \u30e6\u30fc\u30b6\u30fc \u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u4f5c\u6210<\/li>\n<li>\u30db\u30b9\u30c8\u30b7\u30b9\u30c6\u30e0\u3092\u518d\u611f\u67d3\u3055\u305b\u308b\u305f\u3081\u306b\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3055\u308c\u305f\u30bf\u30b9\u30af\u3092\u8a2d\u5b9a<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p>\u307e\u305f\u3001\u3053\u306e\u30c9\u30ed\u30c3\u30d1\u30fc\u306f\u3001\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u305fPHP\u30d0\u30c3\u30af\u30c9\u30a2\u30d5\u30a1\u30a4\u30eb\u306e\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3092\u30b7\u30b9\u30c6\u30e0\u306b\u3059\u3067\u306b\u5b58\u5728\u3059\u308b\u65e2\u77e5\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u306b\u507d\u88c5\u3059\u308b\u3053\u3068\u3067\u3001\u65e2\u5b58\u306e\u74b0\u5883\u306b\u7d1b\u308c\u8fbc\u3082\u3046\u3068\u3057\u3066\u3044\u307e\u3057\u305f\u3002\u3055\u3089\u306b\u3001\u4e9c\u7a2e1\u306b\u5c5e\u3059\u308b\u30c9\u30ed\u30c3\u30d1\u30fc\u306f\u3001\u56f33a\u3067\u793a\u3057\u3066\u3044\u308b\u3088\u3046\u306b\u3001\u653b\u6483\u8005\u306eIPv4\u30a2\u30c9\u30ec\u30b9<span style=\"font-family: 'courier new', courier, monospace;\">37[.]49[.]230[.]74<\/span>\u306e\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u304b\u3089\u30ea\u30e2\u30fc\u30c8\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u30d5\u30a7\u30c3\u30c1\u3057\u3066\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u306eIPv4\u30a2\u30c9\u30ec\u30b9\u306e\u5730\u7406\u7684\u4f4d\u7f6e\u306f\u30aa\u30e9\u30f3\u30c0\u56fd\u5185\u3067\u3059\u3002\u3053\u306e\u30a2\u30c9\u30ec\u30b9\u306e\u904e\u53bb\u306eDNS\u30ec\u30b3\u30fc\u30c9\u3092\u53d6\u308a\u51fa\u3059\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3001\u307b\u3068\u3093\u3069\u304c\u6210\u4eba\u5411\u3051\u306e\u30ed\u30b7\u30a2\u306e\u30c9\u30e1\u30a4\u30f3\u3068\u306e\u95a2\u9023\u4ed8\u3051\u304c\u660e\u3089\u304b\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<ol>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">campusteen[.]ru<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">caramelgirl[.]ru<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">cumixface[.]ru<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">cutiebooty[.]ru<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">gentlepus[.]ru<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">lopornix[.]ru<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">megabobox[.]ru<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">sledporn[.]ru<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">Super-teen[.]ru<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">sweetassma[.]ru<\/span><\/li>\n<\/ol>\n<p>\u672c\u7a3f\u57f7\u7b46\u6642\u70b9\u3067\u306f\u653b\u6483\u8005\u306e\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306e\u4e00\u90e8\u304c\u30aa\u30f3\u30e9\u30a4\u30f3\u306b\u6b8b\u3063\u3066\u304a\u308a\u3001\u3068\u304f\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u60aa\u610f\u306e\u3042\u308b\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u6d3b\u767a\u306b\u63d0\u4f9b\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<ul>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">hxxp[:\/\/]37[.]49[.]230[.]74\/k[.]php<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">hxxp[:\/\/]37[.]49[.]230[.]74\/z\/wr[.]php<\/span><\/li>\n<\/ul>\n<p>\u305d\u306e\u6642\u70b9\u3067\u4ee5\u4e0b\u306e\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u30a2\u30af\u30c6\u30a3\u30d6\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n<ul>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">hxxp[:\/\/]37[.]49[.]230[.]74\/z\/post\/noroot[.]php<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">hxxp[:\/\/]37[.]49[.]230[.]74\/z\/post\/root[.]php<\/span><\/li>\n<\/ul>\n<h3><a id=\"Web-Shell\"><\/a>Web\u30b7\u30a7\u30eb<\/h3>\n<p>PHP Web\u30b7\u30a7\u30eb\u306b\u306f\u3001\u30b7\u30b0\u30cd\u30c1\u30e3\u30d9\u30fc\u30b9\u306e\u9632\u5fa1\u3092\u56de\u907f\u3059\u308b\u305f\u3081\u306b\u3001\u30e9\u30f3\u30c0\u30e0\u306a\u30b8\u30e3\u30f3\u30af\u30b3\u30e1\u30f3\u30c8\u304c\u542b\u307e\u308c\u307e\u3059\u3002\u307e\u305f\u3001PHP Web\u30b7\u30a7\u30eb\u306f\u3001\u672c\u5f53\u306e\u610f\u56f3\u3092\u96a0\u3059\u305f\u3081\u306b\u3001\u8907\u6570\u30ec\u30a4\u30e4\u306eBase64\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306b\u30e9\u30c3\u30d7\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306eWeb\u30b7\u30a7\u30eb\u306f\u3001\u53d7\u4fe1Web\u8981\u6c42\u5185\u306e\u4ee5\u4e0b\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u51e6\u7406\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">md5<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">admin<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">cmd<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">call<\/span><\/li>\n<\/ul>\n<p>\u3053\u306eWeb\u30b7\u30a7\u30eb\u306f\u3001\u30cf\u30fc\u30c9\u30b3\u30fc\u30c9\u3055\u308c\u305f\u300cMD5\u8a8d\u8a3c\u30cf\u30c3\u30b7\u30e5\u300d\u306b\u3088\u3063\u3066\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u8a8d\u8a3c\u30cf\u30c3\u30b7\u30e5\u306f\u3001\u88ab\u5bb3\u8005\u306e\u30d1\u30d6\u30ea\u30c3\u30afIPv4\u30a2\u30c9\u30ec\u30b9\u306b\u4e00\u610f\u306b\u30de\u30c3\u30d4\u30f3\u30b0\u3055\u308c\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n<p>\u53d7\u4fe1Web\u8981\u6c42\u306b\u30e6\u30fc\u30b6\u30fc\u304c\u6307\u5b9a\u3057\u305f<span style=\"font-family: 'courier new', courier, monospace;\">md5<\/span>\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u3001\u305d\u306e\u30e6\u30fc\u30b6\u30fc\u304cWeb\u30b7\u30a7\u30eb\u3068\u3084\u308a\u53d6\u308a\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u30ed\u30b0\u30a4\u30f3\u304c\u6210\u529f\u3057\u3066\u30bb\u30c3\u30b7\u30e7\u30f3\u304c\u78ba\u7acb\u3055\u308c\u308b\u524d\u306b\u3053\u306e\u8a8d\u8a3c\u30cf\u30c3\u30b7\u30e5\u3068\u7167\u5408\u3055\u308c\u308b\u3053\u3068\u3092\u5fc5\u8981\u3068\u3057\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u3053\u306eWeb\u30b7\u30a7\u30eb\u306f\u3001\u5024\u3068\u3057\u3066<span style=\"font-family: 'courier new', courier, monospace;\">Elastic<\/span>\u307e\u305f\u306f<span style=\"font-family: 'courier new', courier, monospace;\">Freepbx<\/span>\u3092\u6307\u5b9a\u3067\u304d\u308b<span style=\"font-family: 'courier new', courier, monospace;\">admin<\/span>\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u53d7\u3051\u5165\u308c\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u305d\u308c\u305e\u308c\u306e\u7ba1\u7406\u8005\u30bb\u30c3\u30b7\u30e7\u30f3\u304c\u4f5c\u6210\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><span style=\"font-family: 'courier new', courier, monospace;\">cmd<\/span>\u8981\u6c42\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u901a\u3057\u3066\u5229\u7528\u3055\u308c\u308b\u4efb\u610f\u306e\u30b3\u30de\u30f3\u30c9\u306e\u307b\u304b\u3001\u4ee5\u4e0b\u306e\u7d44\u307f\u8fbc\u307f\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u30b3\u30de\u30f3\u30c9\u304c\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<ol>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">ls -la<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">ps -aux --forest<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">asterisk -rx 'core show channels'<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">asterisk -rx 'sip show peers'<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">cat \/etc\/elastix.conf<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">cat \/etc\/asterisk\/sip_additional.conf<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">cat \/etc\/asterisk\/extensions_custom.conf<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">cat \/etc\/amportal.conf<\/span><\/li>\n<\/ol>\n<p>\u6700\u5f8c\u306b\u3001<span style=\"font-family: 'courier new', courier, monospace;\">call<\/span> HTTP\u8981\u6c42\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u3001<span style=\"font-family: 'courier new', courier, monospace;\">asterisk -rx \"channel originate Local\/'&lt;prs&gt;&lt;num&gt;@&lt;context&gt; application wait &lt;time&gt;'\" <\/span>\u3068\u3044\u3046Asterisk\u30b3\u30de\u30f3\u30c9 \u30e9\u30a4\u30f3 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9(CLI)\u304b\u3089\u306e\u547c\u3073\u51fa\u3057\u3092\u958b\u59cb\u3057\u307e\u3059\u3002<\/p>\n<h3><a id=\"Configuration-File\"><\/a>\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb<\/h3>\n<p>Base64\u3067\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u305f\u5225\u306e\u30da\u30a4\u30ed\u30fc\u30c9\u304c\u3001\u300c\u30b7\u30f3\u30dc\u30ea\u30c3\u30af\u30ea\u30f3\u30af\u3092\u305f\u3069\u308b\u300d\u52d5\u4f5c\u3092\u6709\u52b9\u306b\u3059\u308b\u305f\u3081\u3001\u304a\u3088\u3073<span style=\"font-family: 'courier new', courier, monospace;\">config.php<\/span>\u3092\u30c7\u30d5\u30a9\u30eb\u30c8\u30da\u30fc\u30b8\u3068\u3057\u3066\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u305f\u3081\u306b\u3001<span style=\"font-family: 'courier new', courier, monospace;\">.htaccess<\/span>\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u7f6e\u304d\u63db\u3048\u307e\u3059\u3002<span style=\"font-family: 'courier new', courier, monospace;\">.htaccess<\/span>\u306f\u3001Apache Web\u30b5\u30fc\u30d0\u30fc\u3067\u3001\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5358\u4f4d\u3067\u8a2d\u5b9a\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u6307\u5b9a\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3067\u3059\u3002\u3053\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306b\u306f\u3001\u7279\u5b9a\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3068\u305d\u306e\u3059\u3079\u3066\u306e\u30b5\u30d6\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u9069\u7528\u3055\u308c\u308b1\u3064\u4ee5\u4e0a\u306e\u8a2d\u5b9a\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n<h3><a id=\"Persistence-Mechanism\"><\/a>\u6c38\u7d9a\u5316\u30e1\u30ab\u30cb\u30ba\u30e0<\/h3>\n<p>\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u306f\u3001\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u6c38\u7d9a\u6027\u306e\u78ba\u7acb\u3092\u8a66\u307f\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30eb\u30fc\u30c8 \u30e6\u30fc\u30b6\u30fc \u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u4f5c\u6210\n<ul>\n<li>\u30a2\u30ab\u30a6\u30f3\u30c8\u540d: <span style=\"font-family: 'courier new', courier, monospace;\">sugarmaint<\/span>\u3001\u30d1\u30b9\u30ef\u30fc\u30c9: <span style=\"font-family: 'courier new', courier, monospace;\">uenQjcP3Il\/zE<\/span><\/li>\n<li>\u30a2\u30ab\u30a6\u30f3\u30c8\u540d: <span style=\"font-family: 'courier new', courier, monospace;\">supports<\/span>\u3001\u30d1\u30b9\u30ef\u30fc\u30c9: <span style=\"font-family: 'courier new', courier, monospace;\">uenQjcP3Il\/zE<\/span><\/li>\n<\/ul>\n<\/li>\n<li>\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3055\u308c\u305f\u30bf\u30b9\u30af\u30a8\u30f3\u30c8\u30ea\u306e\u8ffd\u52a0\n<ul>\n<li>1\u5206\u3054\u3068\u306b\u5b9f\u884c\u3059\u308b<\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">hxxp[:\/\/]37[.]49[.]230[.]74\/k[.]php<\/span>\u304b\u3089\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u30ea\u30e2\u30fc\u30c8\u30b3\u30d4\u30fc\u3092\u30d5\u30a7\u30c3\u30c1\u3059\u308b<\/li>\n<li>\u30bf\u30b9\u30af\u3092\u30b7\u30a7\u30eb\u5185\u3067\u5b9f\u884c\u3059\u308b<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><a id=\"Conclusion\"><\/a>\u7d50\u8ad6<\/h2>\n<p>\u8106\u5f31\u306a\u30b5\u30fc\u30d0\u30fc\u306bWeb\u30b7\u30a7\u30eb\u3092\u57cb\u3081\u8fbc\u3080\u6226\u7565\u306f\u3001\u60aa\u610f\u3042\u308b\u653b\u6483\u8005\u306b\u3068\u3063\u3066\u65b0\u3057\u3044\u6226\u8853\u3068\u3044\u3046\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u9ad8\u5ea6\u306a\u4fb5\u5165\u3092\u6355\u6349\u3059\u308b\u552f\u4e00\u306e\u65b9\u6cd5\u306f\u3001\u591a\u5c64\u9632\u5fa1\u6226\u7565\u3067\u3059\u3002\u8907\u6570\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30a2\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u3068\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u5358\u4e00\u753b\u9762\u306b\u307e\u3068\u3081\u3066\u8abf\u6574\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u306e\u307f\u3001\u9632\u5fa1\u5074\u306f\u3053\u3046\u3044\u3063\u305f\u653b\u6483\u3092\u691c\u51fa\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u88fd\u54c1\u30b9\u30a4\u30fc\u30c8\u3067\u63d0\u4f9b\u3055\u308c\u3066\u3044\u308b\u3055\u307e\u3056\u307e\u306a\u4fdd\u8b77\u6a5f\u80fd\u306e\u307b\u304b\u3001WildFire\u3001Advanced URL Filtering\u3001\u8105\u5a01\u9632\u5fa1\u304c\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u306e\u30d5\u30a1\u30df\u30ea\u306b\u5bfe\u5fdc\u3057\u307e\u3059\u3002\u3068\u304f\u306b\u3001\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306e\u304a\u5ba2\u69d8\u306f\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/www.paloaltonetworks.com\/products\/secure-the-network\/wildfire\">WildFire<\/a> (<a href=\"https:\/\/www.paloaltonetworks.com\/network-security\/next-generation-firewall\">\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/a> \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3)\u3092\u901a\u3057\u305f\u30de\u30eb\u30a6\u30a7\u30a2\u30b5\u30f3\u30c9\u30dc\u30c3\u30af\u30b9\u306b\u3088\u308b\u691c\u51fa<\/li>\n<li>Advanced URL Filtering\u306b\u3088\u3063\u3066\u3001\u60aa\u610f\u3042\u308b\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u30bd\u30fc\u30b9URL\u3092\u5206\u985e\u3057\u3001\u30a2\u30af\u30bb\u30b9\u8a66\u884c\u3092\u30d6\u30ed\u30c3\u30af<\/li>\n<li><a href=\"https:\/\/www.paloaltonetworks.com\/products\/secure-the-network\/subscriptions\/threat-prevention\">\u8105\u5a01\u9632\u5fa1<\/a> (<a href=\"https:\/\/www.paloaltonetworks.com\/network-security\/next-generation-firewall\">\u6b21\u4e16\u4ee3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb<\/a> \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3)\u3092\u901a\u3057\u305f\u3001IPS\u304a\u3088\u3073AppID\u306a\u3069\u4e00\u9023\u306e\u9632\u5fa1\u6a5f\u80fd<\/li>\n<\/ul>\n<h2><a id=\"Indicators-of-Compromise\"><\/a>IoC<\/h2>\n<p>\u30ea\u30e2\u30fc\u30c8\u306e\u516c\u958bURL<\/p>\n<ul>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">hxxp[:\/\/]37[.]49[.]230[.]74\/k[.]php<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">hxxp[:\/\/]37[.]49[.]230[.]74\/z\/wr[.]php<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">hxxp[:\/\/]37[.]49[.]230[.]74\/z\/post\/noroot[.]php<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">hxxp[:\/\/]37[.]49[.]230[.]74\/z\/post\/root[.]php<\/span><\/li>\n<\/ul>\n<p>\u5143\u306e\u30b7\u30a7\u30eb\u30b9\u30af\u30ea\u30d7\u30c8 - SHA256\u30cf\u30c3\u30b7\u30e5<\/p>\n<ul>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">000a3688455edacc1dac17539797dc98f055091898a65cd520fb8459c1bc2a2a<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">0012342749e3bae85a9269a93661e2eb00437c71b2bca2eaca458147f9fe8471<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">001305bd3be538e50014d42f02dee55056b73a1df770e2605aded8a970091f2f<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">0050232e04880fbe1d0c670b711b66bb46c32febdc9513074612c90f1f24631b<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">0059d7b736dc1e61bd5b22fff601579fbc8a12b00981fdd34fd13f0fb44688b0<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">0088cba19eec78daee0310854c4bf8f7efc64b89bdc7517f0a1c7ebbba673f72<\/span><\/li>\n<\/ul>\n<p>\u30ed\u30fc\u30ab\u30eb\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9<\/p>\n<ul>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">\/var\/www\/html\/admin\/assets\/ajax.php<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">\/var\/www\/html\/admin\/assets\/config.php<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">\/var\/www\/html\/admin\/assets\/js\/config.php<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">\/var\/www\/html\/admin\/modules\/core\/ajax.php<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">\/var\/www\/html\/digium_phones\/ajax.php<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">\/var\/www\/html\/rest_phones\/ajax.php<\/span><\/li>\n<\/ul>\n<p>\u56fa\u6709\u306e\u6587\u5b57\u5217<\/p>\n<ul>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">ZenharPanel<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">ZenharR<\/span><\/li>\n<li><span style=\"font-family: 'courier new', courier, monospace;\">Ask Master<\/span><\/li>\n<\/ul>\n<h2><a id=\"Additional-Resources\"><\/a>\u8ffd\u52a0\u306e\u30ea\u30bd\u30fc\u30b9<\/h2>\n<ul>\n<li><a href=\"https:\/\/secure.wphackedhelp.com\/blog\/web-shell-php-exploit\">PHP Web\u30b7\u30a7\u30eb<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981 \u4e00\u822c\u306b\u30de\u30eb\u30a6\u30a7\u30a2\u958b\u767a\u8005\u306f\u3001\u30ea\u30e2\u30fc\u30c8\u304b\u3089\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u5b9f\u884c\u3084\u30b3\u30de\u30f3\u30c9\u5b9f\u884c\u306e\u8db3\u639b\u304b\u308a\u3068\u3057\u3066\u3001\u307e\u305aWeb\u30b5\u30fc\u30d0\u30fc\u306bWeb\u30b7\u30a7\u30eb\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\u30022020\u5e7411\u6708\u3001INJ3CTOR3\u306e\u30aa\u30da\u30ec\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u5e45\u5e83\u304f\u5229\u7528\u3055\u308c<\/p>\n","protected":false},"author":335,"featured_media":134408,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[4321,1974,4428],"tags":[5611,5613,5615,5616],"product_categories":[4346,4442,4443,4444,4456],"coauthors":[3245,1762,3246,408],"class_list":["post-124121","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-threat-research","category-malware-ja","category-threat-research-ja","tag-cve-2021-45461-ja","tag-digium-asterisk-ja","tag-mobile-ja","tag-mobile-malware","product_categories-advanced-threat-prevention","product_categories-advanced-threat-prevention-ja","product_categories-advanced-url-filtering-ja","product_categories-advanced-wildfire-ja","product_categories-next-generation-firewall-ja"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Digium IP\u96fb\u8a71\u3078\u306e\u653b\u6483: Web\u30b7\u30a7\u30eb\u57cb\u3081\u8fbc\u307f\u306e\u8003\u5bdf<\/title>\n<meta name=\"description\" content=\"2021\u5e7412\u6708\u4e0b\u65ec\u304b\u30892022\u5e743\u6708\u672b\u307e\u3067\u306e\u671f\u9593\u306bVoIP\u96fb\u8a71\u6a5f\u7528Digium Asterisk\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3092\u6a19\u7684\u3068\u3059\u308b\u60aa\u610f\u306e\u3042\u308b\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u30e6\u30cb\u30fc\u30af\u30b5\u30f3\u30d7\u30eb\u304c50\u4e07\u4ee5\u4e0a\u78ba\u8a8d\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u611f\u67d3\u30c1\u30a7\u30fc\u30f3\u3068\u5f0a\u793e\u88fd\u54c1\u306b\u3088\u308b\u4fdd\u8b77\u3001IoC\u3092\u89e3\u8aac\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\/digium-phones-web-shell\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Digium IP\u96fb\u8a71\u3078\u306e\u653b\u6483: Web\u30b7\u30a7\u30eb\u57cb\u3081\u8fbc\u307f\u306e\u8003\u5bdf\" \/>\n<meta property=\"og:description\" content=\"2021\u5e7412\u6708\u4e0b\u65ec\u304b\u30892022\u5e743\u6708\u672b\u307e\u3067\u306e\u671f\u9593\u306bVoIP\u96fb\u8a71\u6a5f\u7528Digium Asterisk\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3092\u6a19\u7684\u3068\u3059\u308b\u60aa\u610f\u306e\u3042\u308b\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u30e6\u30cb\u30fc\u30af\u30b5\u30f3\u30d7\u30eb\u304c50\u4e07\u4ee5\u4e0a\u78ba\u8a8d\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u611f\u67d3\u30c1\u30a7\u30fc\u30f3\u3068\u5f0a\u793e\u88fd\u54c1\u306b\u3088\u308b\u4fdd\u8b77\u3001IoC\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/unit42.paloaltonetworks.com\/ja\/digium-phones-web-shell\/\" \/>\n<meta property=\"og:site_name\" content=\"Unit 42\" \/>\n<meta property=\"article:published_time\" content=\"2022-07-21T09:07:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2024\/06\/01_Vulnerabilities_1920x900.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Lee Wei, Yang Ji, Muhammad Umer Khan, Wenjun Hu\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Digium IP\u96fb\u8a71\u3078\u306e\u653b\u6483: 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