{"id":4833,"date":"2018-04-27T22:16:54","date_gmt":"2018-04-27T22:16:54","guid":{"rendered":"http:\/\/www.hexacorn.com\/blog\/?p=4833"},"modified":"2018-04-27T22:22:32","modified_gmt":"2018-04-27T22:22:32","slug":"i-shot-the-sigverif-exe-the-gui-based-lolbin","status":"publish","type":"post","link":"https:\/\/www.hexacorn.com\/blog\/2018\/04\/27\/i-shot-the-sigverif-exe-the-gui-based-lolbin\/","title":{"rendered":"I shot the sigverif.exe &#8211; the GUI-based LOLBin"},"content":{"rendered":"<p>File Signature Verification has nothing to do with launching arbitrary applications, but it is just a similar case to <a href=\"https:\/\/www.hexacorn.com\/blog\/2017\/10\/04\/running-programs-via-proxy-jumping-on-a-edr-bypass-trampoline-part-2\/\">odbcad32.exe<\/a> &#8211; the GUI apps can sometimes be abused to produce undesired effects &#8211; ones that their authors most likely have not anticipated&#8230;<\/p>\n<p>Time for the recipe.<\/p>\n<p>So we launch the sigverif.exe:<\/p>\n<p><a href=\"https:\/\/www.hexacorn.com\/blog\/wp-content\/uploads\/2018\/04\/sigverif0.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-4834\" src=\"https:\/\/www.hexacorn.com\/blog\/wp-content\/uploads\/2018\/04\/sigverif0.png\" alt=\"\" width=\"463\" height=\"277\" srcset=\"https:\/\/www.hexacorn.com\/blog\/wp-content\/uploads\/2018\/04\/sigverif0.png 463w, https:\/\/www.hexacorn.com\/blog\/wp-content\/uploads\/2018\/04\/sigverif0-300x179.png 300w\" sizes=\"(max-width: 463px) 100vw, 463px\" \/><\/a><br \/>\nThen we go to Advanced settings by clicking the Advanced button, and we choose &#8230; the log file. And while we are at it why shouldn&#8217;t we choose the c:\\windows\\system32\\calc.exe as a destination?<br \/>\n<a href=\"https:\/\/www.hexacorn.com\/blog\/wp-content\/uploads\/2018\/04\/sigverif1.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-4835\" src=\"https:\/\/www.hexacorn.com\/blog\/wp-content\/uploads\/2018\/04\/sigverif1.png\" alt=\"\" width=\"340\" height=\"295\" srcset=\"https:\/\/www.hexacorn.com\/blog\/wp-content\/uploads\/2018\/04\/sigverif1.png 340w, https:\/\/www.hexacorn.com\/blog\/wp-content\/uploads\/2018\/04\/sigverif1-300x260.png 300w\" sizes=\"(max-width: 340px) 100vw, 340px\" \/><\/a>We then hit the View Log button, and voila. Calculator is on the screen:<\/p>\n<p><a href=\"https:\/\/www.hexacorn.com\/blog\/wp-content\/uploads\/2018\/04\/sigverify.gif\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-4836\" src=\"https:\/\/www.hexacorn.com\/blog\/wp-content\/uploads\/2018\/04\/sigverify.gif\" alt=\"\" width=\"460\" height=\"508\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>File Signature Verification has nothing to do with launching arbitrary applications, but it is just a similar case to odbcad32.exe &#8211; the GUI apps can sometimes be abused to produce undesired effects &#8211; ones that their authors most likely have &hellip; <a href=\"https:\/\/www.hexacorn.com\/blog\/2018\/04\/27\/i-shot-the-sigverif-exe-the-gui-based-lolbin\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[56,64],"tags":[],"_links":{"self":[{"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/posts\/4833"}],"collection":[{"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/comments?post=4833"}],"version-history":[{"count":2,"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/posts\/4833\/revisions"}],"predecessor-version":[{"id":4838,"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/posts\/4833\/revisions\/4838"}],"wp:attachment":[{"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/media?parent=4833"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/categories?post=4833"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/tags?post=4833"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}