{"id":5309,"date":"2018-08-19T22:56:23","date_gmt":"2018-08-19T22:56:23","guid":{"rendered":"http:\/\/www.hexacorn.com\/blog\/?p=5309"},"modified":"2018-08-19T22:58:15","modified_gmt":"2018-08-19T22:58:15","slug":"acw-exe-perhaps-the-last-true-lolbin-standing","status":"publish","type":"post","link":"https:\/\/www.hexacorn.com\/blog\/2018\/08\/19\/acw-exe-perhaps-the-last-true-lolbin-standing\/","title":{"rendered":"acw.exe &#8211; perhaps the last true Lolbin standing&#8230;"},"content":{"rendered":"<p>As I <a href=\"https:\/\/www.hexacorn.com\/blog\/2018\/08\/17\/a-few-more-lolbins\/\">mentioned<\/a> I won&#8217;t be covering lolbins anymore until I find something new\/interesting.<\/p>\n<p>I guess an OS-native rundll32.exe replacement is kinda interesting, especially that it seems to be present by default on some Windows Server installations (e.g. 2008) and sometimes is installed by other software.<\/p>\n<p>The binary in question is part of a <a href=\"http:\/\/www.help-info.de\/en\/Help_Info_AP_Help\/ap_help_GuidedHelp.htm\">Guided Help a.k.a. Active Content Wizard<\/a> component and the .exe in question is acw.exe.<\/p>\n<p>It has a nice command line argument that allows us to load and execute any DLL:<\/p>\n<ul>\n<li>%systemroot%\\system32\\acw.exe -Extensions &lt;dll&gt;<\/li>\n<\/ul>\n<p>Known locations of acw.exe are:<\/p>\n<ul>\n<li>c:\\Program Files\\ACW\\acw.exe<\/li>\n<li>c:\\windows\\system32\\acw.exe<\/li>\n<li>c:\\windows\\syswow64\\acw.exe<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>As I mentioned I won&#8217;t be covering lolbins anymore until I find something new\/interesting. I guess an OS-native rundll32.exe replacement is kinda interesting, especially that it seems to be present by default on some Windows Server installations (e.g. 2008) and &hellip; <a href=\"https:\/\/www.hexacorn.com\/blog\/2018\/08\/19\/acw-exe-perhaps-the-last-true-lolbin-standing\/\">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\/5309"}],"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=5309"}],"version-history":[{"count":4,"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/posts\/5309\/revisions"}],"predecessor-version":[{"id":5313,"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/posts\/5309\/revisions\/5313"}],"wp:attachment":[{"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/media?parent=5309"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/categories?post=5309"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hexacorn.com\/blog\/wp-json\/wp\/v2\/tags?post=5309"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}