{"id":123650,"date":"2022-06-14T21:46:08","date_gmt":"2022-06-15T04:46:08","guid":{"rendered":"https:\/\/unit42.paloaltonetworks.com\/?p=123650"},"modified":"2022-06-14T21:57:05","modified_gmt":"2022-06-15T04:57:05","slug":"junctions-windows-redirection-trust-mitigation","status":"publish","type":"post","link":"https:\/\/unit42.paloaltonetworks.com\/ja\/junctions-windows-redirection-trust-mitigation\/","title":{"rendered":"\u306a\u305c\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u304c\u6a5f\u80fd\u3057\u306a\u304f\u306a\u3063\u305f\u306e\u304b: Windows\u306e\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306b\u304a\u3051\u308b\u4fe1\u983c\u306e\u8efd\u6e1b\u7b56\u3092\u63a2\u308b"},"content":{"rendered":"<h2><a id=\"post-123650-_4lt92rr5muov\"><\/a>\u6982\u8981<\/h2>\n<p>\u8fd1\u5e74\u3001\u7279\u6a29\u6607\u683c\u578b\u306e\u8106\u5f31\u6027\u306b\u5206\u985e\u3055\u308c\u308b\u4ee3\u8868\u7684\u306a\u8106\u5f31\u6027\u306e1\u3064\u304c\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u653b\u6483\u306e\u8106\u5f31\u6027\u3067\u3059\u3002\u3053\u306e\u30af\u30e9\u30b9\u306e\u8106\u5f31\u6027\u306f\u3001\u975e\u7279\u6a29\u30e6\u30fc\u30b6\u30fc\u306b\u3088\u308b\u66f8\u304d\u8fbc\u307f\u304c\u53ef\u80fd\u306a\u30d5\u30a1\u30a4\u30eb\u3084\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u3001\u7279\u6a29\u3092\u6301\u3064\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8(Windows\u30b5\u30fc\u30d3\u30b9\u306a\u3069)\u304c\u64cd\u4f5c\u3059\u308b\u3001\u3068\u3044\u3046\u70b9\u3092\u7a81\u304f\u3082\u306e\u3067\u3059\u3002\u30cf\u30fc\u30c9\u30ea\u30f3\u30af\u3084\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u306a\u3069\u7570\u306a\u308b\u7a2e\u985e\u306e\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u30ea\u30f3\u30af\u3092\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u3067\u3001\u653b\u6483\u8005\u304c\u7279\u6a29\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3092\u9a19\u3057\u3001\u610f\u56f3\u3057\u306a\u3044\u30d5\u30a1\u30a4\u30eb\u3092\u64cd\u4f5c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u3046\u3057\u305f\u653b\u6483\u306e\u6700\u7d42\u76ee\u6a19\u306e\u591a\u304f\u306f\u3001\u653b\u6483\u8005\u306e\u63d0\u4f9b\u3059\u308b\u5b9f\u884c\u30d5\u30a1\u30a4\u30eb(DLL\u3084\u30b9\u30af\u30ea\u30d7\u30c8\u306a\u3069)\u3092\u30c7\u30a3\u30b9\u30af\u306b\u66f8\u304d\u8fbc\u307f\u3001\u30b7\u30b9\u30c6\u30e0\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u3067\u5b9f\u884c\u3055\u305b\u308b\u3053\u3068\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u3046\u3057\u305f\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u306e\u4f8b\u306f<a href=\"https:\/\/github.com\/galdeleon\/Conferences\/blob\/master\/Exploiting%20Errors%20in%20Windows%20Error%20Reporting%20-%20BlueHatIL%202020.pdf\">\u7b46\u8005\u306b\u3088\u308bBlueHat IL 2020\u3067\u306e\u8b1b\u6f14<\/a>\u3084<a href=\"https:\/\/github.com\/rapid7\/metasploit-framework\/blob\/master\/modules\/exploits\/windows\/local\/cve_2020_0787_bits_arbitrary_file_move.rb\">CVE-2020-0787 Metasploit\u30e2\u30b8\u30e5\u30fc\u30eb<\/a>\u306a\u3069\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u672c\u7a3f\u3067\u306f\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u3001\u8105\u5a01\u30a2\u30af\u30bf\u30fc\u304c\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u653b\u6483\u3067\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3068\u3001\u8efd\u6e1b\u7b56\u306e\u958b\u767a\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<p>\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306e\u304a\u5ba2\u69d8\u306f\u3001Cortex XDR\u306b\u3088\u308a\u3001\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u653b\u6483\u3092\u306d\u3089\u3046\u3055\u307e\u3056\u307e\u306a\u7a2e\u985e\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u304b\u3089\u4fdd\u8b77\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2><a id=\"post-123650-_w194nwps7rxc\"><\/a>\u76ee\u6b21<\/h2>\n<p><a href=\"#post-123650-_1rlalif7vm7o\">\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u3068\u306f\u4f55\u304b<\/a><br \/>\n<a href=\"#post-123650-_tlq4k18mxtnj\">\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306e\u4fe1\u983c\u306e\u8efd\u6e1b\u7b56<\/a><br \/>\n<a href=\"#post-123650-_216h6mf8p4k8\">\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306e\u4fe1\u983c\u306e\u4ed5\u7d44\u307f<\/a><br \/>\n<a href=\"#post-123650-_q3ig7995ctt7\">\u8efd\u6e1b\u7b56\u306f\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u304b<\/a><br \/>\n<a href=\"#post-123650-_39n6i9lok72y\">\u7d50\u8ad6<\/a><\/p>\n<h2><a id=\"post-123650-_1rlalif7vm7o\"><\/a>\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u3068\u306f\u4f55\u304b<\/h2>\n<p><a href=\"https:\/\/docs.microsoft.com\/ja-jp\/windows\/win32\/fileio\/hard-links-and-junctions#junctions\">\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3<\/a>\u306fNT\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0(NTFS)\u306e\u6a5f\u80fd\u306e1\u3064\u3067\u3001\u3042\u308b\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u5225\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u30ea\u30f3\u30af\u3055\u305b\u3089\u308c\u308b\u6a5f\u80fd\u3067\u3059\u3002\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u5229\u7528\u3055\u308c\u3066\u3044\u3066\u3001\u305f\u3068\u3048\u3070<span style=\"font-family: 'courier new', courier, monospace;\">C:\\Documents and Settings<\/span>\u306a\u3069\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3082\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u3067\u30ea\u30f3\u30af\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_123635\" aria-describedby=\"caption-attachment-123635\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-123636 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/06\/word-image-81.png\" alt=\"\u3053\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u306f\u3001NTFS\u3067\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u3066\u3001\u3042\u308b\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u5225\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea(\u3053\u306e\u5834\u5408\u3001Documents and Settings)\u306b\u30ea\u30f3\u30af\u3057\u305f\u4f8b\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002 \" width=\"900\" height=\"292\" \/><figcaption id=\"caption-attachment-123635\" class=\"wp-caption-text\">\u56f31. \u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u306e\u4f7f\u7528\u4f8b<\/figcaption><\/figure>\n<p>Microsoft\u306f2019\u5e74\u306b\u300c\u30cf\u30fc\u30c9\u30ea\u30f3\u30af\u306e\u4f5c\u6210\u8005\u304c\u30ea\u30f3\u30af\u5148\u3078\u306e\u66f8\u304d\u8fbc\u307f\u30a2\u30af\u30bb\u30b9\u6a29\u3092\u6301\u3064\u3053\u3068\u300d\u3092\u8981\u6c42\u3059\u308b\u8efd\u6e1b\u7b56\u3092\u5c0e\u5165\u3057\u307e\u3057\u305f\u3002\u305d\u308c\u4ee5\u964d\u306f\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u304c\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u653b\u6483\u306e\u60aa\u7528\u624b\u6bb5\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3088\u304f\u3042\u308b\u8106\u5f31\u6027\u306e\u30d1\u30bf\u30fc\u30f3\u306f\u305f\u3068\u3048\u3070\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u3042\u308b\u7279\u6a29\u30b5\u30fc\u30d3\u30b9\u304c\u30ea\u30e2\u30fc\u30c8\u30d7\u30ed\u30b7\u30fc\u30b8\u30e3\u30b3\u30fc\u30eb(RPC)\u306a\u3069\u306e\u30d7\u30ed\u30bb\u30b9\u9593\u901a\u4fe1(IPC)\u306e\u4ed5\u7d44\u307f\u3092\u901a\u3058\u3066\u30c8\u30ea\u30ac\u30fc\u3067\u304d\u308b\u6a5f\u80fd\u3092\u516c\u958b\u3057\u3066\u3044\u308b\u304c\u3001\u305d\u306e\u6a5f\u80fd\u304c\u4f4e\u3044\u6a29\u9650\u30ec\u30d9\u30eb\u3067\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u304b\u3089\u3082\u30c8\u30ea\u30ac\u30fc\u3055\u308c\u3046\u308b\u3002<\/li>\n<li>\u305d\u306e\u6a5f\u80fd\u306f\u30b0\u30ed\u30fc\u30d0\u30eb\u306b\u66f8\u304d\u8fbc\u307f\u53ef\u80fd\u306a\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u4e0b\u306e\u30d5\u30a1\u30a4\u30eb\u306b\u5bfe\u3059\u308b\u64cd\u4f5c(\u305f\u3068\u3048\u3070\u305d\u306e\u30d5\u30a1\u30a4\u30eb\u3078\u306e\u30c7\u30fc\u30bf\u66f8\u304d\u8fbc\u307f)\u3092\u884c\u3046\u304c\u3001\u305d\u306e\u64cd\u4f5c\u304c\u507d\u88c5\u306a\u3057\u3067\u884c\u308f\u308c\u308b(\u3064\u307e\u308a\u305d\u306e\u30b7\u30b9\u30c6\u30e0\u30b5\u30fc\u30d3\u30b9\u306e\u6a29\u9650\u3067\u884c\u308f\u308c\u308b)\u3002<\/li>\n<\/ul>\n<p>\u3053\u3046\u3057\u305f\u554f\u984c\u3092\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3059\u308b\u5834\u5408\u3001\u653b\u6483\u8005\u306f\u307e\u305a\u305d\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3068\u30bf\u30fc\u30b2\u30c3\u30c8(\u901a\u5e38\u3001<span style=\"font-family: 'courier new', courier, monospace;\">C:\\Windows<\/span>\u307e\u305f\u306f\u305d\u306e\u30b5\u30d6\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e1\u3064)\u3068\u306e\u9593\u306b\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u6b21\u306b\u653b\u6483\u8005\u306fRPC\u306e\u547c\u3073\u51fa\u3057\u3092\u30c8\u30ea\u30ac\u30fc\u3057\u3066\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u3092\u305f\u3069\u308a\u3001\u30b7\u30b9\u30c6\u30e0\u306eDLL\u30d5\u30a1\u30a4\u30eb\u3092\u4e0a\u66f8\u304d\u3057\u307e\u3059\u3002\u6700\u5f8c\u306b\u60aa\u610f\u306e\u3042\u308bDLL\u304c\u4f55\u3089\u304b\u306e\u30b5\u30fc\u30d3\u30b9\u306b\u3088\u3063\u3066\u30ed\u30fc\u30c9\u3055\u308c\u3001\u653b\u6483\u8005\u304c\u63d0\u4f9b\u3059\u308b\u30b3\u30fc\u30c9\u304c\u30b7\u30b9\u30c6\u30e0\u306e\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u3067\u5b9f\u884c\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_123637\" aria-describedby=\"caption-attachment-123637\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-123638 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/06\/word-image-82-1.png\" alt=\"\u3053\u306e\u30d5\u30ed\u30fc\u30c1\u30e3\u30fc\u30c8\u306f\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u653b\u6483\u306e\u4ed5\u7d44\u307f\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u5b9f\u884c\u306f\u3001\u653b\u6483\u8005\u3067\u3042\u308b\u30e6\u30fc\u30b6\u30fc\u304b\u3089\u59cb\u307e\u308a\u307e\u3059\u3002\" width=\"900\" height=\"377\" \/><figcaption id=\"caption-attachment-123637\" class=\"wp-caption-text\">\u56f32. \u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u653b\u6483\u306e\u4f8b<\/figcaption><\/figure>\n<h2><a id=\"post-123650-_tlq4k18mxtnj\"><\/a>\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306e\u4fe1\u983c\u306e\u8efd\u6e1b\u7b56<\/h2>\n<p><a href=\"https:\/\/github.com\/dwizzzle\/Presentations\/blob\/master\/David%20Weston%20-%20Keeping%20Windows%20Secure%20-%20Bluehat%20IL%202019.pdf\">BlueHat IL 2020<\/a>\u3067David Weston\u6c0f\u304c\u8b1b\u6f14\u300c<a href=\"https:\/\/github.com\/dwizzzle\/Presentations\/blob\/master\/David%20Weston%20-%20Keeping%20Windows%20Secure%20-%20Bluehat%20IL%202019.pdf\">Keeping Windows Secure<\/a>\u300d\u3067\u7d39\u4ecb\u3057\u305f\u3053\u306e\u30af\u30e9\u30b9\u306e\u8106\u5f31\u6027\u306b\u5bfe\u3057\u3001Microsoft\u306f\u8efd\u6e1b\u7b56\u306e\u30ea\u30ea\u30fc\u30b9\u3092\u767a\u8868\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u8efd\u6e1b\u7b56\u306f\u6700\u8fd1\u306eWindows 10\u30d3\u30eb\u30c9\u3067\u767b\u5834\u3057\u305f\u3070\u304b\u308a\u306a\u306e\u3067\u3001\u30ea\u30d0\u30fc\u30b9\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u3057\u3066\u305d\u306e\u4ed5\u7d44\u307f\u3092\u63a2\u308a\u307e\u3057\u305f\u3002<\/p>\n<figure id=\"attachment_123639\" aria-describedby=\"caption-attachment-123639\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-123640 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/06\/word-image-83.png\" alt=\"\u3053\u306e\u30d7\u30ec\u30bc\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u30b9\u30e9\u30a4\u30c9\u306b\u306f\u300cPath Redirection Mitigations - Mitigations coming in future release\u300d\u3068\u66f8\u304b\u308c\u3066\u3044\u307e\u3059\u3002Hardlink mitigation - will now require write permission to link destination before creation. Already available in Windows Insider Preview (and bounty eligible). Junction mitigation - Newly created junctions gain a \" width=\"900\" height=\"499\" \/><figcaption id=\"caption-attachment-123639\" class=\"wp-caption-text\">\u56f33. BlueHat IL 2020\u3067\u884c\u308f\u308c\u305f\u8b1b\u6f14\u300cKeeping Windows Secure\u300d\u306e\u30d7\u30ec\u30bc\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/figcaption><\/figure>\n<h2><a id=\"post-123650-_216h6mf8p4k8\"><\/a>\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306e\u4fe1\u983c\u306e\u4ed5\u7d44\u307f<\/h2>\n<p>\u8efd\u6e1b\u7b56\u306f\u3054\u304f\u30b7\u30f3\u30d7\u30eb\u3067\u3001\u30de\u30a4\u30af\u30ed\u30bd\u30d5\u30c8\u306eBlueHat\u8b1b\u6f14\u3067\u767a\u8868\u3055\u308c\u305f\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u5f93\u3063\u305f\u3082\u306e\u3067\u3059\u3002\u305d\u306e\u76ee\u7684\u306f\u3001\u7279\u6a29\u3092\u6301\u305f\u305a\u6574\u5408\u6027\u30ec\u30d9\u30ebMedium\u306e\u30a2\u30af\u30bf\u30fc\u304c\u4f5c\u6210\u3057\u305f\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u3092\u30de\u30fc\u30ad\u30f3\u30b0\u3057\u3066\u7279\u6a29\u30d7\u30ed\u30bb\u30b9\u304c\u305d\u306e\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u3092\u305f\u3069\u3089\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u304c\u4f5c\u6210\u3055\u308c\u308b\u305f\u3073\u3001<span style=\"font-family: 'courier new', courier, monospace;\">ntfs.sys<\/span>\u306f<span style=\"font-family: 'courier new', courier, monospace;\">nt!IoComputeRedirectionTrustLevel<\/span>\u3092\u547c\u3073\u51fa\u3057\u3066\u3001\u547c\u3073\u51fa\u3057\u5143\u306e\u4fe1\u983c(trust)\u30ec\u30d9\u30eb\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002\u3053\u306e\u30ec\u30d9\u30eb\u306f\u547c\u3073\u51fa\u3057\u5143\u30c8\u30fc\u30af\u30f3(\u3042\u308c\u3070\u507d\u88c5\u30c8\u30fc\u30af\u30f3\u3001\u3042\u308b\u3044\u306f\u30d7\u30e9\u30a4\u30de\u30ea\u30c8\u30fc\u30af\u30f3)\u306b\u57fa\u3065\u3044\u3066\u6c7a\u5b9a\u3055\u308c\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u8a08\u7b97\u3057\u305f\u5024\u3092\u305d\u306e\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u306e\u30d5\u30a1\u30a4\u30eb\u5236\u5fa1\u30d6\u30ed\u30c3\u30af\u306e\u6a19\u6e96\u60c5\u5831\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<p><figure id=\"attachment_123641\" aria-describedby=\"caption-attachment-123641\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-123642 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/06\/word-image-84.png\" alt=\"\u3053\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u306f\u3001\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u304c\u4f5c\u6210\u3055\u308c\u305f\u3055\u3044\u3001ntfs.sys \u304c nt!IoComputeRedirectionTrustLevel \u3092\u547c\u3073\u51fa\u3057\u3066\u547c\u3073\u51fa\u3057\u5143\u306e\u8a08\u7b97\u3092\u884c\u3046\u3088\u3046\u3059\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\" width=\"900\" height=\"796\" \/><figcaption id=\"caption-attachment-123641\" class=\"wp-caption-text\">\u56f34. ntoskrnl.exe 10.0.19041[.]1645<\/figcaption><\/figure>\u73fe\u6642\u70b9\u306e\u4fe1\u983c\u30ec\u30d9\u30eb\u306f2\u6bb5\u968e\u306e\u307f\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u30ec\u30d9\u30eb1: \u6574\u5408\u6027\u30ec\u30d9\u30eb\u304cMedium\u306e\u30a2\u30af\u30bf\u30fc\u306b\u3088\u3063\u3066\u4f5c\u6210\u3055\u308c\u305f\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3059<\/li>\n<li>\u30ec\u30d9\u30eb2: \u7279\u6a29\u30a2\u30af\u30bf\u30fc(Administrator\u3001System\u3001\u306a\u3044\u3057Kernel)\u306b\u4f5c\u6210\u3055\u308c\u305f\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3059<\/li>\n<\/ul>\n<p>\u8efd\u6e1b\u7b56\u3092\u5b8c\u5168\u306a\u3082\u306e\u306b\u3059\u308b\u305f\u3081\u3001\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u306f\u4fe1\u983c\u30ec\u30d9\u30eb\u306e\u691c\u8a3c\u304c\u3059\u3093\u3067\u304b\u3089\u305f\u3069\u3089\u308c\u307e\u3059\u3002\u3053\u308c\u306f\u8efd\u6e1b\u7b56\u304c\u6709\u52b9\u3067\u3042\u308b\u5834\u5408\u306b\u306e\u307f\u5b9f\u884c\u3055\u308c\u307e\u3059\u304c\u3001\u3053\u308c\u3092\u5236\u5fa1\u3059\u308b\u306e\u304c\u65b0\u3057\u3044\u30d7\u30ed\u30bb\u30b9\u8efd\u6e1b\u7b56\u30dd\u30ea\u30b7\u30fc<span style=\"font-family: 'courier new', courier, monospace;\">ProcessRedirectionTrustPolicy<\/span>\u3067\u3059\u3002\u3053\u306e\u30dd\u30ea\u30b7\u30fc\u306b\u306f\u3001\u76e3\u67fb(audit)\u30e2\u30fc\u30c9\u3068\u5b9f\u65bd(enforce)\u30e2\u30fc\u30c9\u306e2\u3064\u306e\u30e2\u30fc\u30c9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_123643\" aria-describedby=\"caption-attachment-123643\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-123644 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/06\/word-image-85.png\" alt=\"\u3053\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u306f\u3001ProcessRedirectionTrustPolicy\u3067\u5229\u7528\u53ef\u80fd\u306a2\u3064\u306e\u30e2\u30fc\u30c9(\u76e3\u67fb\u307e\u305f\u306f\u5b9f\u65bd)\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002 \" width=\"900\" height=\"235\" \/><figcaption id=\"caption-attachment-123643\" class=\"wp-caption-text\">\u56f35. winnt.h \u30d8\u30c3\u30c0\u306b\u65b0\u3057\u3044\u69cb\u9020\u4f53\u304c\u8ffd\u52a0\u3055\u308c\u305f<\/figcaption><\/figure>\n<p><span style=\"font-family: 'courier new', courier, monospace;\"><a href=\"https:\/\/docs.microsoft.com\/en-us\/windows\/win32\/api\/processthreadsapi\/nf-processthreadsapi-setprocessmitigationpolicy\">SetProcessMitigationPolicy<\/a><\/span>\u306b\u6709\u52b9\u306a\u5f15\u6570\u3092\u6307\u5b9a\u3057\u3066\u547c\u3073\u51fa\u3059\u3068\u3001\u3053\u308c\u304c\u6700\u7d42\u7684\u306b<span style=\"font-family: 'courier new', courier, monospace;\">nt!PspSetRedirectionTrustPolicy<\/span>\u3092\u547c\u3073\u51fa\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u30d7\u30ed\u30bb\u30b9\u306e\u30d7\u30e9\u30a4\u30de\u30ea\u30c8\u30fc\u30af\u30f3\u4e0a\u306e\u8efd\u6e1b\u7b56\u304c\u6709\u52b9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_123645\" aria-describedby=\"caption-attachment-123645\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-123646 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/06\/word-image-86.png\" alt=\"SetProcessMitigationPolicy\u304cnt!PspSteRedirectionTrustPolicy\u3092\u547c\u3073\u51fa\u3057\u3066\u3044\u308b\u3068\u3053\u308d\u3002\u3053\u308c\u306b\u3088\u308a\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u306e\u8efd\u6e1b\u7b56\u304c\u6709\u52b9\u306b \" width=\"900\" height=\"190\" \/><figcaption id=\"caption-attachment-123645\" class=\"wp-caption-text\">\u56f36. \u8efd\u6e1b\u7b56\u3092\u6709\u52b9\u5316<\/figcaption><\/figure>\n<p>\u6700\u7d42\u7684\u306b<span style=\"font-family: 'courier new', courier, monospace;\">ntfs.sys<\/span>\u304c\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u306e\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306e\u3055\u3044\u306b<span style=\"font-family: 'courier new', courier, monospace;\">nt!IoCheckRedirectionTrustLevel<\/span>\u3092\u4f7f\u3063\u3066\u547c\u3073\u51fa\u3057\u5143\u30c8\u30fc\u30af\u30f3\u306b\u5bfe\u3059\u308b\u691c\u8a3c\u3092\u884c\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u7279\u6a29\u30b5\u30fc\u30d3\u30b9\u304c\u81ea\u8eab\u306e\u30b7\u30b9\u30c6\u30e0\u7279\u6a29\u3067\u306e\u64cd\u4f5c\u3092\u884c\u3046\u5834\u5408\u306b\u3001\u4fe1\u983c\u3055\u308c\u3066\u3044\u306a\u3044\u30b8\u30e3\u30f3\u30af\u30b7\u30e7\u30f3\u306f\u305f\u3069\u3089\u306a\u3044\u3001\u3068\u3044\u3046\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306b\u5931\u6557\u3059\u308b\u3068\u3001\u30a8\u30e9\u30fc<span style=\"font-family: 'courier new', courier, monospace;\">0xc00004be<\/span>(The path cannot be traversed because it contains untrusted mount point \u30d1\u30b9\u3092\u30c8\u30e9\u30d0\u30fc\u30b9\u3067\u304d\u307e\u305b\u3093\u3002\u4fe1\u983c\u3055\u308c\u3066\u3044\u306a\u3044\u30de\u30a6\u30f3\u30c8\u30dd\u30a4\u30f3\u30c8\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059)\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<h2><a id=\"post-123650-_q3ig7995ctt7\"><\/a>\u8efd\u6e1b\u7b56\u306f\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u304b<\/h2>\n<p>\u8efd\u6e1b\u7b56\u3092\u30ea\u30d0\u30fc\u30b9\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u3057\u3066\u307f\u3066\u3001\u73fe\u5728\u306eWindows\u30d3\u30eb\u30c9\u3067\u3053\u308c\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u304b\u3001\u306a\u3063\u3066\u3044\u308b\u3068\u3059\u308c\u3070\u3069\u306e\u30e2\u30fc\u30c9\u304c\u6709\u52b9\u306a\u306e\u304b\u3092\u78ba\u8a8d\u3057\u305f\u304f\u306a\u308a\u307e\u3057\u305f\u3002\u305d\u3053\u3067\u3001\u5b9f\u884c\u4e2d\u306e\u5168\u30d7\u30ed\u30bb\u30b9\u306e\u72b6\u614b\u3092\u7167\u4f1a\u3059\u308b\u30b5\u30f3\u30d7\u30eb\u306e\u30a2\u30d7\u30ea\u3092(<span style=\"font-family: 'courier new', courier, monospace;\"><a href=\"https:\/\/docs.microsoft.com\/en-us\/windows\/win32\/api\/processthreadsapi\/nf-processthreadsapi-getprocessmitigationpolicy\">GetProcessMitigationPolicy<\/a><\/span>\u3092\u4f7f\u3063\u3066)\u4f5c\u6210\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u7d50\u679c\u3001\u73fe\u6642\u70b9\u3067\u306f\u3001\u6570\u7a2e\u985e\u306e\u30b5\u30fc\u30d3\u30b9\u3067\u76e3\u67fb\u30e2\u30fc\u30c9\u306e\u8efd\u6e1b\u7b56\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u307f\u3067\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002\u3067\u304d\u308c\u3070\u8fd1\u3044\u3046\u3061\u306bMicrosoft\u304c\u5b9f\u65bd(enforce)\u30e2\u30fc\u30c9\u3067\u8efd\u6e1b\u7b56\u3092\u6709\u52b9\u306b\u3057\u3066\u304f\u308c\u308b\u3088\u3046\u306b\u9858\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure id=\"attachment_123647\" aria-describedby=\"caption-attachment-123647\" style=\"width: 900px\" class=\"wp-caption aligncenter\"><img  class=\"wp-image-123648 lozad\"  data-src=\"https:\/\/unit42.paloaltonetworks.com\/wp-content\/uploads\/2022\/06\/word-image-87.png\" alt=\"\u3053\u306e\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u306f\u3001\u73fe\u5728\u306eWindows\u30d3\u30eb\u30c9\u3067\u8efd\u6e1b\u7b56\u306e\u6a5f\u80fd\u304c\u3069\u306e\u3088\u3046\u306b\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u304b\u3001\u307e\u305f\u3069\u306e\u30e2\u30fc\u30c9\u3067\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u304b\u306e\u8a73\u7d30\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u5b9f\u884c\u4e2d\u306e\u3059\u3079\u3066\u306e\u30d7\u30ed\u30bb\u30b9\u306e\u72b6\u614b\u3092\u7167\u4f1a\u3059\u308b\u30b5\u30f3\u30d7\u30eb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u7d50\u679c\u3067\u3059\u3002\u73fe\u5728\u306f\u3044\u304f\u3064\u304b\u306e\u30b5\u30fc\u30d3\u30b9\u304c\u76e3\u67fb\u30e2\u30fc\u30c9\u3067\u306e\u8efd\u6e1b\u7b56\u3092\u6709\u52b9\u306b\u3057\u3066\u3044\u308b\u306e\u307f\u3067\u3059\u3002 \" width=\"900\" height=\"727\" \/><figcaption id=\"caption-attachment-123647\" class=\"wp-caption-text\">\u56f37 \u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u4fe1\u983c\u30dd\u30ea\u30b7\u30fc\u306e\u6709\u52b9\u5316<\/figcaption><\/figure>\n<h2><a id=\"post-123650-_39n6i9lok72y\"><\/a>\u7d50\u8ad6<\/h2>\n<p>\u3053\u3053\u6570\u5e74Microsoft\u306f\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u653b\u6483\u306b\u5bfe\u51e6\u3059\u308b\u3079\u304f\u6570\u3005\u306e\u8efd\u6e1b\u7b56\u3092\u30ea\u30ea\u30fc\u30b9\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u305d\u306e\u4e0a\u3067\u3001\u307e\u3060\u4e0d\u5177\u5408\u304c\u60aa\u7528\u3055\u308c\u3066\u3057\u307e\u3046\u3088\u3046\u306a\u30b9\u30ad\u3084\u6761\u4ef6\u3092\u898b\u3064\u3051\u51fa\u3057\u3001\u305d\u306e\u6709\u52b9\u6027\u3092\u8a55\u4fa1\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<p><a href=\"https:\/\/www.paloaltonetworks.jp\/cortex\/cortex-xdr\">\u30d1\u30ed\u30a2\u30eb\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30b9\u306eCortex XDR<\/a>\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u653b\u6483\u7528\u306e\u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8\u3092\u30d6\u30ed\u30c3\u30af\u3059\u308b\u4fdd\u8b77\u6a5f\u80fd\u3092\u591a\u6570\u5099\u3048\u3066\u304a\u308a\u3001\u5b9f\u969b\u306e\u653b\u6483\u3092\u9632\u3050\u3053\u3068\u3092\u5b9f\u8a3c\u6e08\u307f\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981 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