\u79c1\u305f\u3061\u306f\u3001\u3053\u306e\u30d6\u30ed\u30b0\u3067\u8ff0\u3079\u305fInvoke-Obfuscation\u30c4\u30fc\u30eb\u306e\u30c6\u30b9\u30c8\u6642\u306b\u3053\u306eQUADAGENT\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3057\u305f\u3002Invoke-Obfuscation\u5185\u306e2\u3064\u306e\u7279\u5b9a\u306e\u96e3\u8aad\u5316\u624b\u6cd5\u3092\u9069\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3053\u306e\u30d6\u30ed\u30b0\u3067\u8aac\u660e\u3057\u305f\u653b\u6483\u3067\u914d\u4fe1\u3055\u308c\u305fQUADAGENT\u30da\u30a4\u30ed\u30fc\u30c9\u306b\u975e\u5e38\u306b\u3088\u304f\u4f3c\u305f\u3001\u96e3\u8aad\u5316\u3055\u308c\u305fPowerShell\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u4f5c\u6210\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n
\u51683\u56de\u306e\u653b\u6483\u6ce2\u3067\u914d\u4fe1\u3055\u308c\u305f\u6700\u7d42\u306e\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u3001\u4ed6\u306e\u8abf\u67fb\u7814\u7a76\u7d44\u7e54\u306b\u3088\u3063\u3066QUADAGENT\u3068\u547c\u3070\u308c\u3066\u3044\u308bPowerShell\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u653b\u6483\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u306f\u3001C2\u30b5\u30fc\u30d0\u30fc\u3068\u3057\u3066rdppath[.]com\u3068cpuproc[.]com\u306e\u4e21\u65b9\u3092\u4f7f\u7528\u3059\u308b\u3088\u3046\u306b\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002C2\u30b5\u30fc\u30d0\u30fc\u3068\u901a\u4fe1\u3059\u308b\u3068\u304d\u306b\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u306f\u8907\u6570\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3001\u5177\u4f53\u7684\u306b\u306f\u3001HTTPS\u3001HTTP\u3001\u307e\u305f\u306fDNS\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u3001\u305d\u306e\u9806\u5e8f\u3067\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af \u30c1\u30e3\u30cd\u30eb\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u306f\u6700\u521d\u306bHTTPS\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u4f7f\u7528\u3057\u3066C2\u30b5\u30fc\u30d0\u30fc\u3068\u306e\u901a\u4fe1\u3092\u8a66\u307f\u307e\u3059\u3002HTTPS\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u6210\u529f\u3057\u306a\u3044\u5834\u5408\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u306fHTTP\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u767a\u884c\u3057\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u6210\u529f\u3057\u306a\u3044\u5834\u5408\u306f\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u306f\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3057\u3066\u3001DNS\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u3092\u4f7f\u7528\u3057\u3001\u901a\u4fe1\u3092\u78ba\u7acb\u3057\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u3053\u306e\u30de\u30eb\u30a6\u30a7\u30a2\u306e\u5185\u90e8\u306e\u4ed5\u7d44\u307f\u3092\u8aac\u660e\u3059\u308b\u969b\u306b\u3001\u3053\u308c\u3089\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u5177\u4f53\u7684\u306a\u4f7f\u7528\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n
\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0\u306f\u3001\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u30d5\u30a1\u30a4\u30eb\u540d(\u4f8b: Office365DCOMCheck\u307e\u305f\u306fSystemDiskClean)\u3092\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3055\u308c\u305f\u30bf\u30b9\u30af\u306e\u540d\u524d\u3068\u3057\u3066\u4f7f\u7528\u3057\u3001\u611f\u67d3\u30db\u30b9\u30c8\u3078\u306e\u6c38\u7d9a\u6027\u3092\u7dad\u6301\u3057\u307e\u3059\u3002\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3055\u308c\u305f\u30bf\u30b9\u30af\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u3001PowerShell\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u3001\u30bf\u30b9\u30af\u540d\u3068\u540c\u3058\u540d\u524d\u306eVBScript\u30d5\u30a1\u30a4\u30eb(\u4f8b: Office365DCOMCheck.vbs\u307e\u305f\u306fSystemDiskClean.vbs)(%TEMP%\u30d5\u30a9\u30eb\u30c0\u5185)\u306b\u4ee5\u4e0b\u3092\u8a18\u8ff0\u3059\u308b\u3053\u3068\u304b\u3089\u958b\u59cb\u3057\u307e\u3059\u3002<\/p>\n
\u305d\u306e\u5f8c\u3001\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3055\u308c\u305f\u30bf\u30b9\u30af\u306f\u30015\u5206\u3054\u3068\u306b\u7a3c\u52d5\u3057\u3001\u30c0\u30a6\u30f3\u30ed\u30fc\u30c0 \u30b9\u30af\u30ea\u30d7\u30c8\u306f\u6c38\u7d9a\u7684\u306b\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002\u30bf\u30b9\u30af\u81ea\u4f53\u306f\u304b\u306a\u308a\u30b7\u30f3\u30d7\u30eb\u3067\u3001QUADAGENT\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u5f15\u6570\u3068\u3057\u3066PowerShell\u306e1\u884c\u3092\u542b\u3080VBScript\u30d5\u30a1\u30a4\u30eb(\u4f8b: Office365DCOMCheck.ps1\u304a\u3088\u3073SystemDiskClean.ps1)\u3092\u547c\u3073\u51fa\u3057\u307e\u3059\u3002<\/p>\n
![]()
<\/div>\n
\u6c38\u7d9a\u7684\u306a\u30a2\u30af\u30bb\u30b9\u3092\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3057\u305f\u5f8c\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u3001\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3057\u305f\u30bf\u30b9\u30af\u3068\u540c\u3058\u540d\u524d(\u4f8b: Office365DCOMCheck\u307e\u305f\u306fSystemDiskClean)\u306eHKCU\u30cf\u30a4\u30d6\u306e\u30ec\u30b8\u30b9\u30c8\u30ea \u30ad\u30fc\u5185\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5024\u304c\u5b58\u5728\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n
HKCU\\Office365DCOMCheck<\/p>\n
\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u3001\u3053\u306e\u30ec\u30b8\u30b9\u30c8\u30ea \u30ad\u30fc\u3092\u4f7f\u7528\u3057\u3066\u3001\u4fb5\u5bb3\u3057\u305f\u30b7\u30b9\u30c6\u30e0\u306b\u56fa\u6709\u306e\u30bb\u30c3\u30b7\u30e7\u30f3ID\u3001\u304a\u3088\u3073\u30b7\u30b9\u30c6\u30e0\u3068C2\u30b5\u30fc\u30d0\u30fc\u3068\u306e\u901a\u4fe1\u306e\u6697\u53f7\u5316\u3068\u5fa9\u53f7\u306b\u4f7f\u7528\u3055\u308c\u308b\u4e8b\u524d\u5171\u6709\u30ad\u30fc\u3092\u4fdd\u5b58\u3057\u307e\u3059\u3002\u30da\u30a4\u30ed\u30fc\u30c9\u306e\u6700\u521d\u306e\u5b9f\u884c\u6642\u306b\u306f\u3001\u3053\u306e\u30ec\u30b8\u30b9\u30c8\u30ea \u30ad\u30fc\u306f\u7a7a\u3067\u3059\u3002\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u3001C2\u30b5\u30fc\u30d0\u30fc\u3068\u901a\u4fe1\u3057\u3066\u30bb\u30c3\u30b7\u30e7\u30f3ID\u3068\u4e8b\u524d\u5171\u6709\u30ad\u30fc\u3092\u53d6\u5f97\u3057\u3001\u305d\u308c\u3092\u4ee5\u4e0b\u306e\u5f62\u5f0f\u3067\u3053\u306e\u30ec\u30b8\u30b9\u30c8\u30ea \u30ad\u30fc\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n
<session id>_<pre-shared key><\/p>\n
\u30bb\u30c3\u30b7\u30e7\u30f3ID\u3068\u4e8b\u524d\u5171\u6709\u30ad\u30fc\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u6700\u521d\u306b\u3001\u4ee5\u4e0b\u306eURL\u3078\u306eHTTPS GET\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u4ecb\u3057\u3066C2\u3078\u306e\u63a5\u7d9a\u3092\u8a66\u307f\u307e\u3059\u3002<\/p>\n
hxxps:\/\/www.rdppath[.]com\/<\/p>\n
HTTPS\u3092\u4f7f\u7528\u3057\u305f\u4e0a\u8a18\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u7d50\u679c\u304cHTTP 200 OK\u30e1\u30c3\u30bb\u30fc\u30b8\u3067\u306a\u3044\u5834\u5408\u3001\u307e\u305f\u306f\u5fdc\u7b54\u30c7\u30fc\u30bf\u306b\u82f1\u6570\u5b57\u304c\u542b\u307e\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u306f\u3001\u30b3\u30fc\u30c9\u306fHTTP\u3092\u4f7f\u7528\u3057\u3001\u4ee5\u4e0b\u306eURL\u3092\u4ecb\u3057\u3066\u3001C2\u3068\u306e\u901a\u4fe1\u3092\u8a66\u307f\u307e\u3059\u3002<\/p>\n
hxxp:\/\/www.rdppath[.]com\/<\/p>\n
HTTP\u3092\u4ecb\u3057\u3066C2\u3068\u901a\u4fe1\u3059\u308b\u305f\u3081\u306e\u30b3\u30fc\u30c9\u306f\u3001\u4f8b\u5916\u30cf\u30f3\u30c9\u30e9\u30fc\u5185\u306b\u5b58\u5728\u3057\u307e\u3059\u3002HTTPS\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u52d5\u4f5c\u3057\u306a\u3044\u5834\u5408\u306f\u3001\u3053\u308c\u3092\u30c8\u30ea\u30ac\u30fc\u3059\u308b\u305f\u3081\u306b\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u306f1\u30920\u3067\u9664\u7b97\u3057\u3066\u3001\u4f8b\u5916\u306e\u767a\u751f\u3092\u8a66\u307f\u307e\u3059\u3002\u3053\u306e\u4f8b\u5916\u306f\u3001\u4f8b\u5916\u30cf\u30f3\u30c9\u30e9\u30fc\u3092\u547c\u3073\u51fa\u3057\u3001\u305d\u308c\u306b\u3088\u3063\u3066\u3001\u305d\u3053\u306b\u542b\u307e\u308c\u3066\u3044\u308bHTTP\u901a\u4fe1\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u3044\u305a\u308c\u304b\u306e\u8a66\u884c\u304c\u6210\u529f\u3059\u308b\u3068\u3001C2\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u5e73\u6587\u306e\u30bb\u30c3\u30b7\u30e7\u30f3ID\u3068\u4e8b\u524d\u5171\u6709\u30ad\u30fc\u3067\u5fdc\u7b54\u3057\u307e\u3059\u3002\u305d\u308c\u306f\u3001\u524d\u8ff0\u306e\u30ec\u30b8\u30b9\u30c8\u30ea \u30ad\u30fc\u306b\u4fdd\u5b58\u3055\u308c\u307e\u3059\u3002C2\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u5fdc\u7b54\u30c7\u30fc\u30bf\u306b\u542b\u3081\u3066\u4e8b\u524d\u5171\u6709\u30ad\u30fc\u3092\u63d0\u4f9b\u3057\u3001\u30bb\u30c3\u30b7\u30e7\u30f3ID\u5024\u306f\u3001\u5fdc\u7b54\u5185\u306eSet-Cookie\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u4ecb\u3057\u3066\u3001\u5177\u4f53\u7684\u306b\u306f\u3001cookie\u306ePHPSESSID\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc\u306e\u5f8c\u306e\u6587\u5b57\u5217\u3068\u3057\u3066\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n
\u4e21\u65b9\u306e\u8a66\u307f\u304c\u5931\u6557\u3057\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u304cHTTP\u307e\u305f\u306fHTTPS\u3092\u4ecb\u3057\u3066\u30bb\u30c3\u30b7\u30e7\u30f3ID\u304a\u3088\u3073\u4e8b\u524d\u5171\u6709\u30ad\u30fc\u3092\u53d6\u5f97\u3067\u304d\u306a\u3044\u5834\u5408\u3001DNS\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u3092\u4f7f\u7528\u3057\u3088\u3046\u3068\u3057\u307e\u3059\u3002\u30bb\u30c3\u30b7\u30e7\u30f3ID\u304a\u3088\u3073\u4e8b\u524d\u5171\u6709\u30ad\u30fc\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u3001\u30af\u30a8\u30ea\u3092\u767a\u884c\u3057\u3066\u6b21\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u89e3\u6c7a\u3057\u307e\u3059\u3002<\/p>\n
mail.<random number between 100000 and 999999>.<c2 name><\/p>\n
\u3053\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306f\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u304c\u6700\u521d\u306e\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u4e00\u90e8\u3068\u3057\u3066\u30b7\u30b9\u30c6\u30e0\u56fa\u6709\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u308b\u3053\u3068\u3092C2\u30b5\u30fc\u30d0\u30fc\u306b\u901a\u77e5\u3057\u307e\u3059\u3002\u30b9\u30af\u30ea\u30d7\u30c8\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u5c5e\u3057\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\u3084\u73fe\u5728\u306e\u30e6\u30fc\u30b6\u30fc\u540d\u306a\u3069\u306e\u30b7\u30b9\u30c6\u30e0\u56fa\u6709\u30c7\u30fc\u30bf\u3092\u53ce\u96c6\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306f\u4ee5\u4e0b\u306e\u5f62\u5f0f\u3067\u69cb\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n
<domain>\\<username>:pass<\/p>\n
\u4e0a\u8a18\u306e\u6587\u5b57\u5217\u306f\u3001\u30ab\u30b9\u30bf\u30e0base64\u30a8\u30f3\u30b3\u30fc\u30c0\u3092\u4f7f\u7528\u3057\u3066\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u3001\u82f1\u6570\u5b57\u3067\u306a\u3044\u6587\u5b57(=\u3001\/\u3001+)\u3092\u30c7\u30fc\u30bf\u304b\u3089\u53d6\u308a\u9664\u304d\u3001\u305d\u308c\u3089\u306e\u5024\u3092\u30c9\u30e1\u30a4\u30f3\u306e\u5b89\u5168\u306a\u5024(\u305d\u308c\u305e\u308c01\u300102\u300103)\u306b\u7f6e\u304d\u63db\u3048\u307e\u3059\u3002<\/p>\n
<encoded system data>.<same random number between 100000 and 999999 above>.<c2 name><\/p>\n
\u30bb\u30c3\u30b7\u30e7\u30f3ID\u304a\u3088\u3073\u4e8b\u524d\u5171\u6709\u30ad\u30fc\u3092\u53d6\u5f97\u3059\u308b\u3068\u3001PowerShell\u30b9\u30af\u30ea\u30d7\u30c8\u306f\u3001\u5f15\u304d\u7d9a\u304dC2\u30b5\u30fc\u30d0\u30fc\u3068\u901a\u4fe1\u3057\u3066\u3001\u30b3\u30de\u30f3\u30c9\u3068\u3057\u3066\u6271\u3046\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002\u3053\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u306f\u3001\u307e\u305aHTTPS(\u3046\u307e\u304f\u3044\u304b\u306a\u3044\u5834\u5408\u306fHTTP)\u3092\u4f7f\u7528\u3057\u3066C2\u30b5\u30fc\u30d0\u30fc\u3068\u306e\u901a\u4fe1\u3092\u8a66\u307f\u307e\u3059\u3002\u3053\u3053\u3067\u4f7f\u7528\u3055\u308c\u308bGET\u30ea\u30af\u30a8\u30b9\u30c8\u3067\u306f\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u306ecookie\u5185\u306ePHPSESSID\u30d5\u30a3\u30fc\u30eb\u30c9\u3067\u30bb\u30c3\u30b7\u30e7\u30f3ID\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059(GET\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u4f8b\u3092\u53c2\u7167)\u3002<\/p>\n
GET \/ HTTP\/1.1<\/p>\n
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<\/div>\n
\u30da\u30a4\u30ed\u30fc\u30c9\u304cHTTPS\/HTTP\u3092\u4ecb\u3057\u3066C2\u306b\u5230\u9054\u3067\u304d\u306a\u3044\u5834\u5408\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u518d\u5ea6DNS\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u306b\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3057\u307e\u3059\u3002\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u6b21\u306e\u30c9\u30e1\u30a4\u30f3\u306bDNS\u30af\u30a8\u30ea\u3092\u767a\u884c\u3057\u3066\u3001C2\u306b\u3001\u5f8c\u7d9a\u306e\u30af\u30a8\u30ea\u3067\u30c7\u30fc\u30bf(\u30bb\u30c3\u30b7\u30e7\u30f3ID\u5024)\u3092\u9001\u4fe1\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u901a\u77e5\u3057\u307e\u3059\u3002
\nns1.<random number between 100000 and 999999>.<c2 name><\/p>\n
\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u3001\u30af\u30a8\u30ea\u306b\u5bfe\u3059\u308bC2\u30b5\u30fc\u30d0\u30fc\u306e\u5fdc\u7b54\u306b\u3064\u3044\u3066\u4f55\u3082\u3057\u307e\u305b\u3093\u3002\u4ee3\u308f\u308a\u306b\u3001\u6b21\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u5373\u5ea7\u306b\u30af\u30a8\u30ea\u3092\u767a\u884c\u3057\u307e\u3059\u3002\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u306f\u3001C2\u306b\u9001\u4fe1\u3059\u308b\u305f\u3081\u306e\u30bb\u30c3\u30b7\u30e7\u30f3ID\u5024\u304c\u57cb\u3081\u8fbc\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
<encoded session id>.<same random number between 100000 and 999999>.<c2 domain name><\/p>\n
DNS\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u3092\u4ecb\u3057\u3066\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3059\u308b\u305f\u3081\u306b\u3001C2\u30b5\u30fc\u30d0\u30fc\u306f\u3001IPv6\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u7528\u3057\u3066\u4e0a\u8a18\u306e\u30af\u30a8\u30ea\u306b\u5fdc\u7b54\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u306f\u3001\u5f8c\u7d9a\u306eIPv6\u306e\u8fd4\u7b54\u304b\u3089\u30c7\u30fc\u30bf\u5168\u4f53\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306b\u30da\u30a4\u30ed\u30fc\u30c9\u304c\u767a\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308bDNS\u30af\u30a8\u30ea\u306e\u6570\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u30b9\u30af\u30ea\u30d7\u30c8\u306f\u3001\u6b21\u306e\u5f62\u5f0f\u3092\u4f7f\u7528\u3057\u3066\u6307\u5b9a\u3055\u308c\u305f\u6570\u306eDNS\u30af\u30a8\u30ea\u3092\u9001\u4fe1\u3057\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306b\u3064\u3044\u3066\u3001C2\u30b5\u30fc\u30d0\u30fc\u306f\u3001IPv6\u30a2\u30c9\u30ec\u30b9\u3067\u5fdc\u7b54\u3057\u3001\u30b9\u30af\u30ea\u30d7\u30c8\u306f\u305d\u308c\u3089\u3092\u30c7\u30fc\u30bf\u306e\u6587\u5b57\u5217\u3068\u3057\u3066\u6271\u3044\u307e\u3059\u3002<\/p>\n
www.<sequence number>.<same random number between 100000 and 999999>.<c2 domain name><\/p>\n
\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u3001C2\u304c\u63d0\u4f9b\u3057\u305f\u30c7\u30fc\u30bf\u3092\u30e1\u30c3\u30bb\u30fc\u30b8\u3068\u3057\u3066\u6271\u3044\u307e\u3059\u3002\u6b21\u306e\u3088\u3046\u306a\u69cb\u9020\u3092\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
hello<char uuid[35]><char type[1]><data><\/p>\n
\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u3001hello\u304b\u3089\u59cb\u307e\u308a\u300135\u6587\u5b57\u306eUUID\u6587\u5b57\u5217\u304c\u7d9a\u304d\u307e\u3059\u3002type\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u306f\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u304c\u51e6\u7406\u3059\u308b\u30b3\u30de\u30f3\u30c9\u304c\u6307\u5b9a\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u7279\u5b9a\u306e\u30da\u30a4\u30ed\u30fc\u30c9\u306e\u4e9c\u7a2e\u306f\u30011\u3064\u306e\u30b3\u30de\u30f3\u30c9 \u30bf\u30a4\u30d7\u3001x\u3057\u304b\u51e6\u7406\u3067\u304d\u307e\u305b\u3093\u3002\u30e1\u30c3\u30bb\u30fc\u30b8\u5185\u306edata\u30d5\u30a3\u30fc\u30eb\u30c9\u306f\u3001\u30ab\u30b9\u30bf\u30e0base64\u30a8\u30f3\u30b3\u30fc\u30c9 \u30c7\u30fc\u30bf\u306e\u6587\u5b57\u5217\u3067\u3001\u30de\u30eb\u30a6\u30a7\u30a2\u306f\u524d\u8ff0\u3057\u305f\u540c\u3058\u30ab\u30b9\u30bf\u30e0base64\u30eb\u30fc\u30c1\u30f3\u3092\u4f7f\u7528\u3057\u3066\u30c7\u30b3\u30fc\u30c9\u3057\u3001AES\u304a\u3088\u3073\u4e8b\u524d\u5171\u6709\u30ad\u30fc\u3092\u4f7f\u7528\u3057\u3066\u5fa9\u53f7\u3057\u307e\u3059\u3002x\u30b3\u30de\u30f3\u30c9\u306f\u3001\u63d0\u4f9b\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092PowerShell\u30b9\u30af\u30ea\u30d7\u30c8\u3068\u307f\u306a\u3057\u3001\u73fe\u5728\u306ePowerShell\u30b9\u30af\u30ea\u30d7\u30c8(Office365DCOMCheck.ps1\/SystemDiskClean.ps1)\u306b\u66f8\u304d\u8fbc\u3093\u3067\u3001\u6700\u521d\u306ePowerShell\u30b9\u30af\u30ea\u30d7\u30c8\u30922\u756a\u76ee\u306e\u30da\u30a4\u30ed\u30fc\u30c9 \u30b9\u30af\u30ea\u30d7\u30c8\u3067\u52b9\u679c\u7684\u306b\u4e0a\u66f8\u304d\u3057\u307e\u3059\u3002\u307e\u305f\u3001x\u30b3\u30de\u30f3\u30c9\u306f\u3001\u751f\u6210\u3055\u308c\u305f\u30ec\u30b8\u30b9\u30c8\u30ea \u30ad\u30fc\u304a\u3088\u3073Office365DCOMCheck\/SystemDiskClean\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u6e08\u307f\u30bf\u30b9\u30af\u3092\u524a\u9664\u3057\u307e\u3059\u3002\u305d\u3057\u3066\u3001\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3092cmd \/c:\u306b\u3088\u3063\u3066\u5b9f\u884c\u3057\u3066\u3001\u65b0\u3057\u304f\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u305fPowerShell\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n
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<\/div>\n
\u6b21\u306b\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u30012\u756a\u76ee\u306ePowerShell\u30da\u30a4\u30ed\u30fc\u30c9\u3092\u6b63\u5e38\u306b\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u5b9f\u884c\u3057\u305f\u3053\u3068\u3092C2\u306b\u901a\u77e5\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u6210\u529f\u3057\u305f\u624b\u6cd5\u306b\u5fdc\u3058\u3066\u3001HTTPS\/HTTP\u307e\u305f\u306fDNS\u30c1\u30e3\u30cd\u30eb\u306e\u3044\u305a\u308c\u304b\u3092\u4f7f\u7528\u3057\u3066\u884c\u308f\u308c\u307e\u3059\u3002\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u3001\u4ee5\u4e0b\u306e\u69cb\u9020\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u4f5c\u6210\u3057\u3001C2\u306b\u9001\u4fe1\u3057\u307e\u3059\u3002<\/div>\n
bye<char uuid[35]>d<\/p>\n
\u4e0a\u8a18\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u3001C2\u30b5\u30fc\u30d0\u30fc\u306b\u5bfe\u3059\u308b\u5358\u7d14\u306aHTTPS\/HTTP POST\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u3088\u3063\u3066\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002\u5931\u6557\u3057\u305f\u5834\u5408\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u3001\u4ee5\u4e0b\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u6700\u521d\u306bDNS\u30af\u30a8\u30ea\u3092\u767a\u884c\u3057\u3066DNS\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u3092\u4f7f\u7528\u3057\u3001\u30da\u30a4\u30ed\u30fc\u30c9\u304c\u5f8c\u7d9a\u306eDNS\u30af\u30a8\u30ea\u3067\u30c7\u30fc\u30bf\u3092\u9001\u4fe1\u3059\u308b\u3053\u3068\u3092C2\u306b\u901a\u77e5\u3057\u307e\u3059\u3002<\/p>\n
ns1.<random number between 100000 and 999999>.<c2 name><\/p>\n
\u6b21\u306b\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u309260\u30d0\u30a4\u30c8\u306e\u30c1\u30e3\u30f3\u30af\u306b\u5206\u5272\u3057(\u3053\u306e\u5834\u5408\u306f1\u3064\u306e\u307f)\u3001\u6b21\u306e\u3088\u3046\u306a\u30c9\u30e1\u30a4\u30f3\u69cb\u9020\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u3001DNS\u30af\u30a8\u30ea\u3092\u4ecb\u3057\u3066C2\u306b\u9001\u4fe1\u3057\u307e\u3059\u3002<\/p>\n
<encoded\/encrypted data of message>.<same random number between 100000 and 999999>.<c2 name><\/p>\n
\u30da\u30a4\u30ed\u30fc\u30c9\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u30c9\u30e1\u30a4\u30f3\u69cb\u9020\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u3001DNS\u30af\u30a8\u30ea\u3092\u767a\u884c\u3059\u308b\u3053\u3068\u3067\u30c7\u30fc\u30bf\u9001\u4fe1\u3092\u5b8c\u4e86\u3057\u305f\u3053\u3068\u3092C2\u306b\u901a\u77e5\u3057\u307e\u3059\u3002<\/p>\n
ns2.<same random number between 100000 and 999999>.<c2 name><\/p>\n
QUADAGENT\u30b5\u30f3\u30d7\u30eb\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u6bd4\u8f03<\/h3>\n
bat2exe\u30d0\u30fc\u30b8\u30e7\u30f3(SHA256: 5f001f3387ddfc0314446d0c950da2cec4c786e2374d42beb3acce6883bb4e63)\u306b\u306f\u3001\u30d0\u30c3\u30c1 \u30b9\u30af\u30ea\u30d7\u30c8\u3001PowerShell\u30b9\u30af\u30ea\u30d7\u30c8\u3001\u304a\u3088\u3073\u3044\u304f\u3064\u304b\u306e\u30ea\u30bd\u30fc\u30b9\u5185\u306b\u57cb\u3081\u8fbc\u307e\u308c\u305f\u95a2\u9023\u30d5\u30a1\u30a4\u30eb\u540d\u304c\u3042\u308a\u3001RC4\u304a\u3088\u3073\u3055\u307e\u3056\u307e\u306aMD5\u30cf\u30c3\u30b7\u30e5\u3092\u30ad\u30fc\u3068\u3057\u3066\u4f7f\u7528\u3057\u3066\u5fa9\u53f7\u3057\u307e\u3059\u3002\u5b9f\u884c\u30d5\u30a1\u30a4\u30eb\u306f\u3001\u57cb\u3081\u8fbc\u307fPowerShell\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u53d6\u5f97\u3057\u3001RC4\u3092\u4f7f\u7528\u3057\u3066\u5fa9\u53f7\u3057\u3066\u304b\u3089\u3001ZLIB\u3092\u4f7f\u7528\u3057\u3066\u89e3\u51cd\u3057\u3001\u5e73\u6587\u3092C:\\Users\\<username>\\AppData\\Roaming\\Out.jpg\u306b\u4fdd\u5b58\u3057\u307e\u3059\u3002\u6b21\u306b\u30d0\u30c3\u30c1 \u30b9\u30af\u30ea\u30d7\u30c8\u304cOut.jpg\u3092Office365DCOMCheck.ps1\u306b\u540d\u524d\u5909\u66f4\u3057\u3001\u6b21\u306e\u30b3\u30de\u30f3\u30c9\u3067\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n
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.NET\u4e9c\u7a2e(SHA256: d948d5b3702e140ef5b9247d26797b6dcdfe4fdb6f367bb217bc6b5fc79df520<\/p>\n
)\u306f\u3088\u308a\u30b7\u30f3\u30d7\u30eb\u3067\u3059\u3002\u3053\u306e\u30c9\u30ed\u30c3\u30d1\u30fc\u306f\u3001\u6b21\u306e\u30b3\u30de\u30f3\u30c9\u306b\u3088\u3063\u3066\u3001\u524d\u306b\u793a\u3057\u3066\u8b70\u8ad6\u3057\u305f\u56f31\u306e\u30c0\u30a4\u30a2\u30ed\u30b0 \u30dc\u30c3\u30af\u30b9\u3092\u307e\u305a\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n
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<\/div>\n
\u6b21\u306b\u3053\u306e\u30c9\u30ed\u30c3\u30d1\u30fc\u306f\u3001.NET\u30a2\u30bb\u30f3\u30d6\u30ea\u5185\u306e\u30ea\u30bd\u30fc\u30b9\u306b\u5e73\u6587\u3068\u3057\u3066\u5b58\u5728\u3059\u308b\u30da\u30a4\u30ed\u30fc\u30c9\u306e\u5185\u5bb9\u3092\u3001 C:\\Users\\<username>\\AppData\\Local\\Temp\\SystemDiskClean.ps1\u306b\u66f8\u304d\u51fa\u3057\u307e\u3059\u3002\u305d\u3057\u3066\u3001\u30b7\u30a7\u30eb \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n
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