{"id":2199,"date":"2022-09-30T15:48:57","date_gmt":"2022-09-30T07:48:57","guid":{"rendered":"https:\/\/blog.billows.com.tw\/?p=2199"},"modified":"2023-02-13T10:33:21","modified_gmt":"2023-02-13T02:33:21","slug":"%e7%a0%94%e7%a9%b6%e4%ba%ba%e5%93%a1%e8%ad%a6%e5%91%8amicrosoft-exchange-server%e4%b8%ad%e5%ad%98%e6%9c%89%e6%96%b0%e7%9a%84%e9%9b%b6%e6%99%82%e5%b7%ae%e6%bc%8f%e6%b4%9e%ef%bc%8c%e4%b8%a6%e5%b7%b2","status":"publish","type":"post","link":"https:\/\/blog.billows.com.tw\/?p=2199","title":{"rendered":"\u7814\u7a76\u4eba\u54e1\u8b66\u544aMicrosoft Exchange Server\u4e2d\u5b58\u6709\u65b0\u7684\u96f6\u6642\u5dee\u6f0f\u6d1e\uff0c\u4e26\u5df2\u88ab\u99ed\u5ba2\u5be6\u969b\u958b\u63a1"},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/miro.medium.com\/max\/1400\/1*h7SByo94sI7g7A_XzdnPzw.png\" alt=\"\"\/><\/figure>\n\n\n\n<p id=\"07db\">\u8d8a\u5357\u8cc7\u5b89\u516c\u53f8 GTSC \u8b66\u544a\u8aaa\uff0c\u5728Microsoft Exchange Server 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target=\"_blank\">GTSC<\/a>\u8868\u793a\uff0c\u6210\u529f\u5229\u7528\u9019\u4e9b\u6f0f\u6d1e\u53ef\u80fd\u6703\u88ab\u6feb\u7528\u4ee5\u5728\u53d7\u5bb3\u8005\u7684\u7cfb\u7d71\u4e2d\u5efa\u7acb\u7acb\u8db3\u9ede\uff0c\u5f9e\u800c\u4f7f\u653b\u64ca\u8005\u80fd\u5920\u6295\u653eWeb shell\u4e26\u5728\u53d7\u611f\u67d3\u7684\u7db2\u8def\u4e2d\u9032\u884c\u6a6b\u5411\u79fb\u52d5<\/p>\n\n\n\n<p id=\"ef8d\">GTSC \u7684\u7d05\u968a\u78ba\u8a8d\u5982\u4f55\u5229\u7528\u8a72\u6f0f\u6d1e\u5b58\u53d6 Exchange\u5f8c\u7aef\u7684\u7d44\u4ef6\u4e26\u57f7\u884c RCE\uff0c\u4f46\u4e26\u672a\u516c\u4f48\u9019\u4e9b\u6280\u8853\u7684\u7d30\u7bc0\u3002\u7136\u800c\uff0cGTSC\u78ba\u5be6\u8868\u793a\u5b83\u8a18\u9304\u4e86\u653b\u64ca\u4ee5\u6536\u96c6\u8cc7\u6599\u4e26\u5728\u53d7\u5bb3\u8005\u7cfb\u7d71\u4e2d\u5efa\u7acb\u7acb\u8db3\u9ede\uff0c\u6aa2\u6e2c\u5230\u5927\u90e8\u5206\u88ab\u6df7\u6dc6\u7684 Web shel\u200b\u200bl \u88ab\u63a1\u7528\u5230 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id=\"165d\">\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u53bb\u5e74ProxyShell \u6f0f\u6d1e\u906d\u5230\u5ee3\u6cdb\u958b\u63a1\u6642\uff0cHafnium \u4e5f\u90e8\u7f72\u4e86China Chopper web shell \uff0cHafnium \u662f\u4e00\u500b\u5728\u4e2d\u570b\u5883\u5916\u904b\u71df\u7684APT\u99ed\u5ba2\u7d44\u7e54\u3002<\/p>\n\n\n\n<p id=\"059c\">GTSC \u89c0\u5bdf\u5230\u7684\u9032\u4e00\u6b65\u5229\u7528\u5f8c\u6d3b\u52d5\u5305\u62ec\u5c07\u60e1\u610f DLL \u6ce8\u5165\u5167\u5b58\uff0c\u4f7f\u7528 WMI \u547d\u4ee4\u884c ( WMIC ) \u5be6\u7528\u7a0b\u5f0f\u5728\u53d7\u611f\u67d3\u7684\u4f3a\u670d\u5668\u4e0a\u4e1f\u68c4\u548c\u57f7\u884c\u984d\u5916\u7684payloads\u3002<\/p>\n\n\n\n<p id=\"2a9e\"><strong>\u64da\u6089\u8a72\u6f0f\u6d1e\u5229\u7528\u5206\u70ba\u5169\u500b\u968e\u6bb5\uff1a<\/strong><\/p>\n\n\n\n<p id=\"c3a7\">1.\u8207 ProxyShell \u6f0f\u6d1e\u683c\u5f0f\u985e\u4f3c\u7684request\uff1a autodiscover\/autodiscover.json?@evil.com\/&lt;Exchange-backend-endpoint&gt;&amp;Email=autodiscover\/autodiscover.json%3f@evil.com\u3002<\/p>\n\n\n\n<p id=\"2195\">2.\u4f7f\u7528\u4e0a\u9762\u7684\u9023\u7d50\u5b58\u53d6\u53ef\u4ee5\u5be6\u73fe RCE \u7684\u5f8c\u7aef\u7d44\u4ef6\u3002<\/p>\n\n\n\n<p id=\"0690\">\u7814\u7a76\u4eba\u54e1\u8aaa\uff1a\u201c\u9019\u4e9b Exchange \u4f3a\u670d\u5668\u7684\u7248\u672c\u8868\u660e\u5df2\u7d93\u5b89\u88dd\u4e86\u6700\u65b0\u7684\u66f4\u65b0\uff0c\u56e0\u6b64\u4e0d\u53ef\u80fd\u5229\u7528 ProxyShell \u6f0f\u6d1e\u9032\u884c\u5229\u7528\u3002<\/p>\n\n\n\n<p id=\"cc2f\"><strong>\u53ef\u7528\u7684\u81e8\u6642\u7de9\u89e3\u63aa\u65bd:<\/strong><\/p>\n\n\n\n<p id=\"a24b\">\u5728 Microsoft \u767c\u5e03\u5b89\u5168\u66f4\u65b0\u4ee5\u89e3\u6c7a\u9019\u5169\u500b\u96f6\u6642\u5dee\u6f0f\u6d1e\u4e4b\u524d\uff0cGTSC\u5171\u4eab\u81e8\u6642\u7de9\u89e3\u63aa\u65bd\uff0c\u901a\u904e\u4f7f\u7528 URL \u91cd\u5beb\u898f\u5247\u6a21\u7d44\u6dfb\u52a0\u65b0\u7684 IIS \u4f3a\u670d\u5668\u898f\u5247\u4f86\u963b\u6b62\u653b\u64ca\u5617\u8a66\uff1a<\/p>\n\n\n\n<p id=\"4d55\">1. \u5728\u524d\u7aef\u7684\u81ea\u52d5\u767c\u73fe\u4e2d\uff0c\u9078\u64c7\u9078\u9805\u5361 URL \u91cd\u5beb\uff0c\u7136\u5f8c\u9078\u64c7\u8acb\u6c42\u963b\u6b62\u3002<\/p>\n\n\n\n<p id=\"26f9\">2. \u5c07\u5b57\u4e32\u201c .*autodiscover\\.json.*\\@.*Powershell.* \u201d\u6dfb\u52a0\u5230 URL \u8def\u5f91\u3002<\/p>\n\n\n\n<p id=\"3924\">\u689d\u4ef6\u8f38\u5165\uff1a\u9078\u64c7 {REQUEST_URI}<\/p>\n\n\n\n<p id=\"1f55\">3. GTSC \u88dc\u5145\u8aaa\uff1a\u201c\u6211\u5011\u5efa\u8b70\u5168\u7403\u6240\u6709\u4f7f\u7528 Microsoft Exchange Server \u7684\u7d44\u7e54\/\u4f01\u696d\u76e1\u5feb\u6aa2\u67e5\u3001\u5be9\u67e5\u548c\u61c9\u7528\u4e0a\u8ff0\u81e8\u6642\u88dc\u6551\u63aa\u65bd\uff0c\u4ee5\u907f\u514d\u6f5b\u5728\u7684\u56b4\u91cd\u640d\u5bb3\u3002\u201d<\/p>\n\n\n\n<p id=\"b7ee\">\u60f3\u8981\u4f7f\u7528\u6b64\u6f0f\u6d1e\u6aa2\u67e5\u5176 Exchange\u4f3a\u670d\u5668\u662f\u5426\u5df2\u88ab\u5165\u4fb5\u7684\u7ba1\u7406\u54e1\u53ef\u4ee5\u64cd\u4f5c\u4ee5\u4e0b PowerShell \u547d\u4ee4\u4f86\u6383\u63cf IIS \u65e5\u8a8c\u6a94\u6848\u4ee5\u67e5\u627e\u5165\u4fb5\u6307\u6a19\uff1a<\/p>\n\n\n\n<p id=\"08f7\">Get-ChildItem -Recurse -Path &lt;Path_IIS_Logs&gt; -Filter \u201c*.log\u201d | Select-String -Pattern \u2018powershell.*autodiscover\\.json.*\\@.*200<\/p>\n\n\n\n<p>&nbsp;&#8220;\u8f49\u8cbc\u3001\u5206\u4eab\u6216\u5f15\u7528\u6587\u7ae0\u5167\u5bb9\uff0c\u8acb\u8a3b\u660e\u51fa\u8655\u70ba\u7ae3\u76df\u79d1\u6280&nbsp;<a href=\"https:\/\/www.billows.com.tw\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.billows.com.tw<\/a>&nbsp;, \u4ee5\u514d\u89f8\u6cd5&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8d8a\u5357\u8cc7\u5b89\u516c\u53f8 GTSC \u8b66\u544a\u8aaa\uff0c\u5728Microsoft Exchange Server \u4e2d\u767c\u73fe\u4e86\u65b0\u7684\u96f6\u6642\u5dee\u6f0f\u6d1e\uff0c <a class=\"read-more\" href=\"https:\/\/blog.billows.com.tw\/?p=2199\">READ MORE<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-2199","post","type-post","status-publish","format-standard","hentry","category-6"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/blog.billows.com.tw\/index.php?rest_route=\/wp\/v2\/posts\/2199","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.billows.com.tw\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.billows.com.tw\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.billows.com.tw\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.billows.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2199"}],"version-history":[{"count":4,"href":"https:\/\/blog.billows.com.tw\/index.php?rest_route=\/wp\/v2\/posts\/2199\/revisions"}],"predecessor-version":[{"id":2400,"href":"https:\/\/blog.billows.com.tw\/index.php?rest_route=\/wp\/v2\/posts\/2199\/revisions\/2400"}],"wp:attachment":[{"href":"https:\/\/blog.billows.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.billows.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2199"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.billows.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}