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system binary proxy execution verclsid sub technique t1218 012 enterprise mitre att ck matrices enterprise mobile ics tactics enterprise mobile ics techniques enterprise mobile ics defenses mitigations enterprise mobile ics assets detections detection strategies analytics data components cti groups software campaigns resources get started learn more about att ck att ck advisory council att ckcon att ck data tools faq engage with att ck version history updates legal branding benefactors contribute blog search att ckcon 7 0 in person tickets are open join us october 27 28 2026 in mclean va register here for in person tickets hotel and location details can be found in the faq home techniques enterprise system binary proxy execution verclsid system binary proxy execution verclsid other sub techniques of system binary proxy execution 14 id name t1218 001 compiled html file t1218 002 control panel t1218 003 cmstp t1218 004 installutil t1218 005 mshta t1218 007 msiexec t1218 008 odbcconf t1218 009 regsvcs regasm t1218 010 regsvr32 t1218 011 rundll32 t1218 012 verclsid t1218 013 mavinject t1218 014 mmc t1218 015 electron applications adversaries may abuse verclsid exe to proxy execution of malicious code verclsid exe is known as the extension clsid verification host and is responsible for verifying each shell extension before they are used by windows explorer or the windows shell 1 adversaries may abuse verclsid exe to execute malicious payloads this may be achieved by running verclsid exe s c clsid where the file is referenced by a class id clsid a unique identification number used to identify com objects com payloads executed by verclsid exe may be able to perform various malicious actions such as loading and executing com scriptlets sct from remote servers similar to regsvr32 since the binary may be signed and or native on windows systems proxying execution via verclsid exe may bypass application control solutions that do not account for its potential abuse 2 3 4 5 id t1218 012 sub technique of t1218 ⓘ tactic stealth ⓘ platforms windows contributors rodrigo garcia red canary version 3 0 created 10 august 2020 last modified 12 may 2026 version permalink live version procedure examples id name description s0499 hancitor hancitor has used verclsid exe to download and execute a malicious script 3 mitigations id mitigation description m1042 disable or remove feature or program consider removing verclsid exe if it is not necessary within a given environment m1038 execution prevention use application control configured to block execution of verclsid exe if it is not required for a given system or network to prevent potential misuse by adversaries m1037 filter network traffic consider modifying host firewall rules to prevent egress traffic from verclsid exe detection strategy id name analytic id analytic description det0042 detection strategy for t1218 012 verclsid abuse an0118 detects abuse of verclsid exe to execute com objects by monitoring process creation clsid arguments dlls or scriptlet engines loaded into memory and if the clsid points to remote sct hta content verclsid exe makes outbound connections references verclsid exe 2019 december 17 verclsid exe file information what is it how to block retrieved november 17 2024 lolbas n d verclsid exe retrieved august 10 2020 haag m levan k 2017 april 6 old phishing attacks deploy a new methodology verclsid exe retrieved august 10 2020 bohops 2018 august 18 abusing the com registry structure part 2 hijacking loading techniques retrieved august 10 2020 tyrer n n d instructions retrieved august 10 2020 core objects all core att ck objects all none matrices tactics techniques sub techniques defenses all defenses all none mitigations assets detection strategies analytics data components cti all cti all none groups software campaigns reference all reference all none resources domains all domains all none enterprise mobile ics reset filters contact us terms of use privacy policy website changelog cookie preferences 2015 2026 the mitre corporation mitre att ck and att ck are registered trademarks of the mitre corporation