{"id":57996,"date":"2018-11-20T09:00:53","date_gmt":"2018-11-20T01:00:53","guid":{"rendered":"https:\/\/blog.trendmicro.com.tw\/?p=57996"},"modified":"2018-11-16T17:26:17","modified_gmt":"2018-11-16T09:26:17","slug":"microsoft-office%e7%b7%9a%e4%b8%8a%e5%bd%b1%e7%89%87%e5%8a%9f%e8%83%bd%e8%a2%ab%e6%95%a3%e6%92%ad-ursnif-%e8%b3%87%e6%96%99%e7%ab%8a%e5%8f%96%e7%97%85%e6%af%92","status":"publish","type":"post","link":"https:\/\/blog.trendmicro.com.tw\/?p=57996","title":{"rendered":"Microsoft Office\u7dda\u4e0a\u5f71\u7247\u529f\u80fd,\u88ab\u6563\u64ad URSNIF \u8cc7\u6599\u7aca\u53d6\u75c5\u6bd2"},"content":{"rendered":"<p>\u572810\u6708\u4e0b\u65ec\uff0cCymulate\u7684\u5b89\u5168\u7814\u7a76\u4eba\u54e1<a href=\"https:\/\/blog.cymulate.com\/abusing-microsoft-office-online-video\">\u5c55\u793a<\/a>\u4e86\u4e00\u500b\u653b\u64ca\u908f\u8f2f\u6f0f\u6d1e\u7684\u6982\u5ff5\u8b49\u660e\u6a23\u672c\uff08PoC\uff09\uff0c\u8b93\u99ed\u5ba2\u53ef\u4ee5\u5229\u7528 Microsoft Office 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https:\/\/blog.trendmicro.com.tw\/wp-content\/uploads\/2015\/12\/ransomware-business-600x411.jpg 600w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/a><\/p>\n<h3><strong><em>\u60e1\u610f\u8edf\u9ad4\u7684\u611f\u67d3\u5a92\u4ecb\u70ba\u4f55\uff1f<\/em><\/strong><\/h3>\n<p>\u56e0\u70ba\u6b64\u7a2e\u653b\u64ca\u4f7f\u7528\u7279\u88fd\u7684Word\u6587\u4ef6\uff0c\u6240\u4ee5\u5b83\u53ef\u80fd\u6703\u900f\u904e\u5176\u4ed6\u60e1\u610f\u8edf\u9ad4\u6216\u4f5c\u70ba\u5783\u573e\u90f5\u4ef6\u9644\u4ef6\u6a94\u6216\u9023\u7d50\/\u7db2\u5740\u4f86\u9032\u5165\u4f7f\u7528\u8005\u7cfb\u7d71\u3002<\/p>\n<p>\u6b64\u6f0f\u6d1e\u6703\u5f71\u97ffMicrosoft Word 2013\u53ca\u5f8c\u4f86\u7684\u7248\u672c\u3002\u6982\u5ff5\u8b49\u660e\u6a23\u672c\u548c\u771f\u5be6\u75c5\u6bd2\u90fd\u662f\u7528Microsoft Word \u7684 DOCX \u6a94\u6848\u985e\u578b\uff0c\u9019\u662f\u7a2e\u80fd\u5920\u5305\u542b\u6587\u5b57\u3001\u7269\u4ef6\u3001\u6a23\u5f0f\u3001\u683c\u5f0f\u548c\u5716\u7247\u7684XML\u6a94\u6848\u3002\u5b83\u5011\u5132\u5b58\u6210\u5206\u5225\u7684\u6a94\u6848\u4e26\u5c01\u88dd\u6210ZIP\u58d3\u7e2e\u7684DOCX\u6a94\u6848\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"\" src=\"https:\/\/blog.trendmicro.com\/trendlabs-security-intelligence\/files\/2018\/11\/office-video-bug-1.jpg\" width=\"1055\" height=\"438\" \/><\/p>\n<p><em>\u57161<\/em><em>\uff1a\u6982\u5ff5\u8b49\u660e\u6a23\u672c\uff08\u5de6\uff09\u548c\u771f\u5be6\u75c5\u6bd2\uff08\u53f3\uff09\u611f\u67d3\u93c8\u7684\u6bd4\u8f03<\/em><\/p>\n<p>&nbsp;<\/p>\n<p><strong><em>\u6982\u5ff5\u8b49\u660e\u6a23\u672c\u548c\u771f\u5be6\u75c5\u6bd2\u7684\u904b\u4f5c\u6a21\u5f0f\uff1f<\/em><\/strong><\/p>\n<p>\u6982\u5ff5\u8b49\u660e\u6a23\u672c\u548c\u771f\u5be6\u75c5\u6bd2\u5229\u7528\u4e86Microsoft Office\u5167\u5d4c\u7dda\u4e0a\u5f71\u7247\u529f\u80fd\u7684\u908f\u8f2f\u932f\u8aa4\uff0c\u9019\u529f\u80fd\u53ef\u4ee5\u8b93\u4f7f\u7528\u8005\u5d4c\u5165\u5916\u90e8\u4f86\u6e90\uff08\u5982YouTube\u6216\u5176\u4ed6\u985e\u4f3c\u5a92\u9ad4\u5e73\u53f0\uff09\u7684\u7dda\u4e0a\u5f71\u7247\u3002<\/p>\n<p>\u6982\u5ff5\u8b49\u660e\u6a23\u672c\u662f\u5c07\u7dda\u4e0a\u5f71\u7247\u5d4c\u5165\u6587\u4ef6\u5f8c\u518d\u4fee\u6539\u6a94\u6848\u5167\u7684XML\u5b8c\u6210\u3002\u5982Cymulate\u6240\u793a\uff0c\u5b83\u7684\u4f5c\u6cd5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u4fee\u6539\u6587\u4ef6\u526f\u6a94\u540d\uff08\u5f9eDOCX\u6539\u6210ZIP\uff09\u3002<\/li>\n<li>\u53d6\u51fa\u58d3\u7e2e\u6a94\u5167\u7684\u6a94\u6848\u3002<\/li>\n<li>\u627e\u51faXML\u6a94\u6848\u5167\u7684\u53ef\u7528\u4f86\u52a0\u5165\u60e1\u610f\u8173\u672c\u6216\u7db2\u5740\u7684\u6a19\u7c64\uff08<em>embeddedHtml<\/em>\uff09\u3002\u8acb\u6ce8\u610f\uff0c\u4fee\u6539embeddedHtml\u53c3\u6578\u5167\u7684\u7db2\u5740\u5f8c\uff0c\u9ede\u64ca\u6587\u4ef6\u5167\u5f71\u7247\u7684\u4efb\u4f55\u4f4d\u7f6e\u90fd\u6703\u81ea\u52d5\u5c07\u4f7f\u7528\u8005\u5c0e\u5230\u6307\u5b9a\u7684\u7db2\u5740\u3002<\/li>\n<li>\u4fee\u6539<em>embeddedHtml<\/em>\u5167\u7684\u8173\u672c\u4f86\u521d\u59cb\u5316\u548c\u90e8\u7f72\u5f8c\u7e8c\u75c5\u6bd2\u3002<\/li>\n<\/ul>\n<p><!--more--><\/p>\n<p>\u4ed4\u7d30\u7814\u7a76\u771f\u5be6\u75c5\u6bd2\u5f8c\u53ef\u4ee5\u770b\u51fa\u5b83\u53ea\u6709\u4fee\u6539<em>src<\/em>\u53c3\u6578\u4e0b\u7684\u7db2\u5740\uff0c\u5c07\u5176\u66f4\u63db\u6210\u5305\u542b\u4e00\u500b\u8173\u672c\u7684Pastebin\u7db2\u5740\uff0c\u6703\u5728\u6210\u529f\u91cd\u65b0\u5c0e\u5411\u5f8c\u8f09\u5165\u548c\u57f7\u884c\u3002\u63a5\u8457\u8a72\u8173\u672c\u6703\u9023\u5230\u53e6\u4e00\u500b\u60e1\u610f\u7db2\u5740\u4f86\u4e0b\u8f09\u4e26\u57f7\u884cURSNIF\u60e1\u610f\u8edf\u9ad4\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/blog.trendmicro.com\/trendlabs-security-intelligence\/files\/2018\/11\/office-video-bug-2.jpg\" \/><\/p>\n<p><em>\u57162<\/em><em>\uff1a\u986f\u793aembeddedHtml<\/em><em>\u53c3\u6578\u5167\u4fee\u6539\u904e\u7db2\u5740\u7684\u7a0b\u5f0f\u78bc\u622a\u5716\uff08\u7d05\u8272\u6846\u6846\uff09<\/em><\/p>\n<p>&nbsp;<\/p>\n<h3><strong><em>\u6982\u5ff5\u8b49\u660e\u6a23\u672c\u8207\u771f\u5be6\u75c5\u6bd2\u6709\u4f55\u4e0d\u540c\uff1f<\/em><\/strong><\/h3>\n<p>\u6982\u5ff5\u8b49\u660e\u6a23\u672c\u4f7f\u7528<a href=\"https:\/\/msdn.microsoft.com\/en-us\/library\/hh772332(v=vs.85).aspx\">msSaveorOpenBlob method<\/a>\uff08\u70ba\u6a94\u6848\u6216blob\u7269\u4ef6\u555f\u52d5\u61c9\u7528\u7a0b\u5f0f\uff09\u4f86\u89e3\u78bc\u5167\u5d4c\u5728\u5f71\u7247\u6a19\u7c64\u5167\u7d93\u904ebase64\u7de8\u78bc\u7684\u4e8c\u9032\u4f4d\u6a94\u6848\u3002\u9ede\u64ca\u5f71\u7247\u4e5f\u6703\u89f8\u767c\u3002\u89e3\u78bc\u5f8c\uff0c\u5b83\u6703\u900f\u904eIE\u700f\u89bd\u5668\u4e0b\u8f09\u7ba1\u7406\u54e1\u4f86\u63d0\u793a\u4f7f\u7528\u8005\uff08\u986f\u793a\u5167\u5d4c\u7684\u4e8c\u9032\u4f4d\u6a94\u6848\u540d\u7a31\uff09\uff0c\u8a62\u554f\u8981\u57f7\u884c\u6216\u5132\u5b58\u57f7\u884c\u6a94\uff08\u5982\u57163\u6240\u793a\uff09\u3002<\/p>\n<p>\u8ddf\u6982\u5ff5\u8b49\u660e\u6a23\u672c\u4e0d\u540c\uff0c\u771f\u5be6\u75c5\u6bd2\u66f4\u52a0\u7c21\u55ae\uff0c\u53ef\u80fd\u4e5f\u66f4\u6709\u6548\u3002\u5b83\u6703\u5728\u9ede\u64ca\u5f71\u7247\u6642\u76f4\u63a5\u9023\u5230\u60e1\u610f\u7db2\u5740\u3002\u63a5\u8457\u8f09\u5165\u6703\u81ea\u52d5\u4e0b\u8f09\u6700\u7d42\u60e1\u610f\u6a94\u6848\u7684\u60e1\u610f\u8173\u672c\u3002\u5982\u57164\u6240\u793a\uff0c\u5b83\u6703\u7528\u4e0b\u8f09\u7ba1\u7406\u54e1\u63d0\u793a\u4f7f\u7528\u8005\u5132\u5b58\u6216\u57f7\u884c\u507d\u88dd\u6210Flash Player\u66f4\u65b0\u7684\u60e1\u610f\u6a94\u6848\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/blog.trendmicro.com\/trendlabs-security-intelligence\/files\/2018\/11\/office-video-bug-3.jpg\" \/><\/p>\n<p><em>\u57163<\/em><em>\uff1aIE <\/em><em>\u4e0b\u8f09\u7ba1\u7406\u54e1\u8a62\u554f\u4f7f\u7528\u8005\u8981\u57f7\u884c\u6216\u5132\u5b58\u53ef\u57f7\u884c\u6a94\u6848<\/em><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/blog.trendmicro.com\/trendlabs-security-intelligence\/files\/2018\/11\/office-video-bug-4.gif\" \/><\/p>\n<p><em>\u57164<\/em><em>\uff1a\u771f\u5be6\u75c5\u6bd2\u904b\u4f5c\u6a21\u5f0f<\/em><\/p>\n<p>&nbsp;<\/p>\n<h3><strong><em>\u4f7f\u7528\u8005\u5982\u4f55\u62b5\u79a6\u9019\u7a2e\u5a01\u8105\uff1f<\/em><\/strong><\/h3>\n<p>\u5fae\u8edf<a href=\"https:\/\/www.scmagazine.com\/home\/security-news\/researchers-report-vulnerability-in-microsoft-words-online-video-feature\/\">\u64da\u5831<\/a>\u4e26\u6c92\u6709\u70ba\u6b64\u5206\u914dCVE\u7de8\u865f\uff0c\u56e0\u70ba\u9019\u5f71\u7247\u5167\u5d4c\u529f\u80fd\u662f\u7167\u9810\u671f\/\u8a2d\u8a08\u7684\u65b9\u5f0f\u904b\u4f5c\u3002\u4f7f\u7528\u8005\u53ef\u4ee5\u5c01\u9396\u5728XML\u5167\u5177\u6709embeddedHtml\u6a19\u7c64\u7684Word\u6587\u4ef6\u6216\u505c\u7528\u5167\u5d4c\u5f71\u7247\u7684\u6587\u4ef6\u4f86\u9632\u6b62\u88ab\u60e1\u610f\u6feb\u7528\u3002\u56e0\u70ba\u9019\u7a2e\u505a\u6cd5\u53ea\u9700\u8981\u4fee\u6539\u7db2\u5740\uff0c\u53ef\u80fd\u6703\u88ab\u7528\u4f86\u5c07\u5404\u7a2e\u60e1\u610f\u8edf\u9ad4\u6216\u5176\u4ed6\u5a01\u8105\u5e36\u7d66\u4f7f\u7528\u6236\u548c\u4f01\u696d\u3002\u8981\u63a1\u7528\u6700\u4f73\u5be6\u4f5c\uff1a\u5c0f\u5fc3\u975e\u9810\u671f\u7684<a href=\"https:\/\/blog.trendmicro.com.tw\/?p=57421\">\u96fb\u5b50\u90f5\u4ef6<\/a>\u4ee5\u53ca\u66f4\u65b0\u7cfb\u7d71\u3001\u61c9\u7528\u7a0b\u5f0f\u548c\u7db2\u8def\u4f86<a href=\"https:\/\/www.trendmicro.com\/vinfo\/us\/security\/news\/vulnerabilities-and-exploits\/patching-problems-and-how-to-solve-them\">\u4fee\u88dc<\/a>\u53ef\u88ab\u5229\u7528\u7684\u6f0f\u6d1e\u3002\u4f7f\u7528\u80fd\u70ba\u7aef\u9ede\u52a0\u4e0a\u591a\u4e00\u5c64\u9632\u8b77\u7684\u5b89\u5168\u6a5f\u5236\uff08\u5982\u7db2\u5740\u904e\u6ffe\/\u5206\u985e\uff09\u4e5f\u6709\u52a9\u65bc\u5c01\u9396\u60e1\u610f\u7db2\u5740\u548c\u60e1\u610f\u8edf\u9ad4\u4ee3\u7ba1\u7db2\u7ad9\u3002<\/p>\n<p><strong>\u300a\u5ef6\u4f38\u95b1\u8b80 \u300b<\/strong><a href=\"https:\/\/blog.trendmicro.com.tw\/?p=57421\" rel=\"bookmark\">\u9019\u4e9b\u54e1\u5de5\u6c92\u770b\u7a7f\u7684\u9a19\u5c40,\u9020\u6210\u7684\u640d\u5931\u53ef\u80fd\u6bd4\u75c5\u6bd2\u9084\u5927\uff0d \u4f01\u696d\u5e38\u898b\u56db\u7a2e\u96fb\u5b50\u90f5\u4ef6\u5a01\u8105<\/a><\/p>\n<p>\u4f7f\u7528\u8005\u8ddf\u4f01\u696d\u9084\u53ef\u4ee5\u8003\u616e\u63a1\u7528\u5b89\u5168\u89e3\u6c7a\u65b9\u6848\uff0c\u900f\u904e\u8de8\u4e16\u4ee3\u6df7\u5408\u7684\u5a01\u8105\u9632\u79a6\u6280\u8853\u4f86\u4fdd\u8b77\u7cfb\u7d71\u62b5\u79a6\u5404\u7a2e\u5a01\u8105\u3002\u8da8\u52e2\u79d1\u6280\u7684\u7aef\u9ede\u89e3\u6c7a\u65b9\u6848\uff08\u5982<u><a href=\"https:\/\/www.trendmicro.tw\/tw\/business\/complete-software-protection\/index.html\">\u8da8\u52e2\u79d1\u6280 Smart Protection Suites<\/a><\/u>\u548c <a href=\"https:\/\/www.trendmicro.com\/zh_tw\/small-business\/all-products-for-smb.html\">Worry-Free Business Security\u00a0<\/a>\uff09\u53ef\u4ee5\u5075\u6e2c\u60e1\u610f\u6a94\u6848\u548c\u90f5\u4ef6\u4ee5\u53ca\u5c01\u9396\u6240\u6709\u76f8\u95dc\u60e1\u610f\u7db2\u5740\u4f86\u4fdd\u8b77\u7528\u6236\u548c\u4f01\u696d\u514d\u65bc\u6b64\u5a01\u8105\u3002<u><a href=\"\u8da8\u52e2\u79d1\u6280Deep%20Discovery\u9032\u968e\u7db2\u8def\u5b89\u5168\u9632\u8b77\">\u8da8\u52e2\u79d1\u6280Deep Discovery\u9032\u968e\u7db2\u8def\u5b89\u5168\u9632\u8b77<\/a> <\/u>\u5177\u5099\u96fb\u5b50\u90f5\u4ef6\u6aa2\u67e5\u529f\u80fd\uff0c\u53ef\u4ee5\u5075\u6e2c\u60e1\u610f\u9644\u4ef6\u6a94\u548c\u7db2\u5740\u4f86\u4fdd\u8b77\u4f01\u696d\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u9019\u4e9b\u89e3\u6c7a\u65b9\u6848\u7531<a href=\"https:\/\/www.trendmicro.tw\/business\/xgen-security.html\">\u8da8\u52e2\u79d1\u6280XGen&#x2122; \u9632\u8b77<\/a>\u6280\u8853\u6240\u9a45\u52d5\uff0c\u63d0\u4f9b\u9ad8\u4fdd\u771f\u6a5f\u5668\u5b78\u7fd2\u6280\u8853\u4f86\u4fdd\u8b77<a href=\"https:\/\/www.trendmicro.tw\/tw\/business\/complete-software-protection\/index.html\">\u9598\u9053<\/a>\u00a0\u548c<a href=\"https:\/\/www.trendmicro.tw\/tw\/business\/complete-software-protection\/index.html\">\u7aef\u9ede<\/a>\uff0c\u4e26\u4e14\u4fdd\u8b77\u5be6\u9ad4\u3001\u865b\u64ec\u548c\u96f2\u7aef\u74b0\u5883\u3002\u85c9\u7531\u7db2\u7ad9\/\u7db2\u5740\u904e\u6ffe\u3001\u884c\u70ba\u5206\u6790\u548c\u5ba2\u88fd\u5316\u6c99\u7bb1\u7b49\u6280\u8853\uff0cXGen\u5b89\u5168\u9632\u8b77\u53ef\u4ee5\u62b5\u79a6\u4e0d\u65b7\u9032\u5316\u4f86\u7e5e\u904e\u50b3\u7d71\u63a7\u5236\u53ca\u653b\u64ca\u5df2\u77e5\/\u672a\u77e5\u6f0f\u6d1e\u7684\u5404\u7a2e\u5a01\u8105\u3002<\/p>\n<h3><strong><em>\u5165\u4fb5\u6307\u6a19\uff08IoC<\/em><\/strong><strong><em>\uff09\uff1a<\/em><\/strong><\/h3>\n<p><em>\u76f8\u95dc\u96dc\u6e4a\u503c\uff08SHA-256<\/em><em>\uff09\uff1a<\/em><\/p>\n<ul>\n<li>03634e2eab2f61ab1d7359c4038c7042f7eb294d9d5c855560468b8824702c47 &#8211; TROJ_EXPLOIT.AOOCAI<\/li>\n<li>d01b6f839b233ce9d6834a58d9d832ad824b73dd3dd1f399639fe5326faf783b &#8211; TSPY_URSNIF.OIBEAO<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>\u76f8\u95dc\u60e1\u610f\u7db2\u5740\uff1a<\/p>\n<ul>\n<li>hxxp:\/\/wetnosesandwhiskers[.]com\/driverfix30e45vers[.]exe<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3><strong><em>\u7528\u4f86\u5075\u6e2cTROJ_EXPLOIT.AOOCAI<\/em><\/strong><strong><em>\u7684YARA<\/em><\/strong><strong><em>\u898f\u5247\uff1a<\/em><\/strong><\/h3>\n<p>rule EMBEDDEDHTML_WITH_SCRIPT {<\/p>\n<p>meta:<\/p>\n<p>description = \u201cpossible abuse of Office video embededHtml\u201d<\/p>\n<p>reference = \u201chttps:\/\/blog.cymulate.com\/abusing-microsoft-office-online-video\u201d<\/p>\n<p>strings:<\/p>\n<p>$embeddedHtmlre1 = \/\\sembeddedHtml=\u201d[^\u201d]+\/<\/p>\n<p>$embeddedHtmlre2 = \/\\sembeddedHtml='[^\u2019]+\/<\/p>\n<p>$script = \u201c&lt;script\u201d nocase<\/p>\n<p>condition:<\/p>\n<p>(<\/p>\n<p>for any i in (1..#embeddedHtmlre1): (<\/p>\n<p>for any j in (1..#script): (<\/p>\n<p>@embeddedHtmlre1[i] &lt; @script[j] and<\/p>\n<p>@script[j] &lt; @embeddedHtmlre1[i] + !embeddedHtmlre1[i]<\/p>\n<p>)<\/p>\n<p>)<\/p>\n<p>)<\/p>\n<p>or<\/p>\n<p>(<\/p>\n<p>for any i in (1..#embeddedHtmlre2): (<\/p>\n<p>for any j in (1..#script): (<\/p>\n<p>@embeddedHtmlre2[i] &lt; @script[j] and<\/p>\n<p>@script[j] &lt; @embeddedHtmlre2[i] + !embeddedHtmlre2[i]<\/p>\n<p>)<\/p>\n<p>)<\/p>\n<p>)<\/p>\n<p>}<\/p>\n<p>&nbsp;<\/p>\n<p>@\u539f\u6587\u51fa\u8655\uff1a<a href=\"https:\/\/blog.trendmicro.com\/trendlabs-security-intelligence\/hide-and-script-inserted-malicious-urls-within-office-documents-embedded-videos\/\">Hide and Script: Inserted Malicious URLs within Office Documents\u2019 Embedded Videos<\/a> \u4f5c\u8005\uff1aMichael Villanueva\u548cToshiyuki 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