Query: Sigma rule for Detects attempts to disable AMSI (Anti-Malware Scan Interface) by modifying the AmsiEnable registry value. Anti-Malware
Matching passage: Sigma rule: Detects attempts to disable AMSI (Anti-Malware Scan Interface) by modifying the AmsiEnable registry value. Anti-Malware. Logsource: windows / registry_set. Rule: title: AMSI Disabled via Registry Modification id: aa37cbb0-da36-42cb-a90f-fdf216fc7467 related: - id: 7dbbcac2-57a0-45ac-b306-ff30a8bd2981 type: similar status: experimental description: 'Detects attempts to disable AMSI (Anti-Malware Scan Interface) by modifying the AmsiEnable registry value. Anti-Malware Scan Interface (AMSI) is a security feature in Windows that allows applications and services to integrate with anti-malware products for enhanced protection against malicious content. Adversaries may attempt to disable AMSI to evade detection by security software, allowing them to execute malicious scripts or code without being scanned. ' references: - https://mostafayahiax.medium.com/hunting-for-amsi-bypassing-methods-9886dda0bf9d - https://docs.microsoft.com/en-us/windows/win32/amsi/antimalware-scan-interface-portal - https://www.mdsec.co.uk/2019/02/macros-and-more-with-sharpshooter-v2-0/ author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2025-12-25 tags: - attack.defense-impairment - attack.t1685 logsource: category: registry_set product: windows detection: selection: TargetObject|endswith: \Software\Microsoft\Windows Script\Settings\AmsiEnable Details: DWORD (0x00000000) condition: selection falsepositives: - Unlikely level: high regression_tests_path: regression_data/rules/windows/registry/registry_set/registry_set_amsi_disable/info.yml simulation: - type: atomic-red-team name: AMSI Bypass - Create AMSIEnable Reg Key technique: T1562.001 atomic_guid: 728eca7b-0444-4f6f-ac36-437e3d751dc0
Near-miss passage: Sigma rule: Running Chrome VPN Extensions via the Registry install 2 vpn extension. Logsource: windows / registry_set. Rule: title: Running Chrome VPN Extensions via the Registry 2 VPN Extension id: b64a026b-8deb-4c1d-92fd-98893209dff1 status: test description: Running Chrome VPN Extensions via the Registry install 2 vpn extension references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1133/T1133.md#atomic-test-1---running-chrome-vpn-extensions-via-the-registry-2-vpn-extension author: frack113 date: 2021-12-28 modified: 2023-08-17 tags: - attack.initial-access - attack.persistence - attack.t1133 logsource: category: registry_set product: windows detection: chrome_ext: TargetObject|contains: Software\Wow6432Node\Google\Chrome\Extensions TargetObject|endswith: update_url chrome_vpn: TargetObject|contains: - fdcgdnkidjaadafnichfpabhfomcebme - fcfhplploccackoneaefokcmbjfbkenj - bihmplhobchoageeokmgbdihknkjbknd - gkojfkhlekighikafcpjkiklfbnlmeio - jajilbjjinjmgcibalaakngmkilboobh - gjknjjomckknofjidppipffbpoekiipm - nabbmpekekjknlbkgpodfndbodhijjem - kpiecbcckbofpmkkkdibbllpinceiihk - nlbejmccbhkncgokjcmghpfloaajcffj - omghfjlpggmjjaagoclmmobgdodcjboh - bibjcjfmgapbfoljiojpipaooddpkpai - mpcaainmfjjigeicjnlkdfajbioopjko - jljopmgdobloagejpohpldgkiellmfnc - lochiccbgeohimldjooaakjllnafhaid - nhnfcgpcbfclhfafjlooihdfghaeinfc - ookhnhpkphagefgdiemllfajmkdkcaim - namfblliamklmeodpcelkokjbffgmeoo - nbcojefnccbanplpoffopkoepjmhgdgh - majdfhpaihoncoakbjgbdhglocklcgno - lnfdmdhmfbimhhpaeocncdlhiodoblbd - eppiocemhmnlbhjplcgkofciiegomcon - cocfojppfigjeefejbpfmedgjbpchcng - foiopecknacmiihiocgdjgbjokkpkohc - hhdobjgopfphlmjbmnpglhfcgppchgje - jgbaghohigdbgbolncodkdlpenhcmcge - inligpkjkhbpifecbdjhmdpcfhnlelja - higioemojdadgdbhbbbkfbebbdlfjbip - hipncndjamdcmphkgngojegjblibadbe - iolonopooapdagdemdoaihahlfkncfgg - nhfjkakglbnnpkpldhjmpmmfefifedcj - jpgljfpmoofbmlieejglhonfofmahini - fgddmllnllkalaagkghckoinaemmogpe - ejkaocphofnobjdedneohbbiilggdlbi - keodbianoliadkoelloecbhllnpiocoi - hoapmlpnmpaehilehggglehfdlnoegck - poeojclicodamonabcabmapamjkkmnnk - dfkdflfgjdajbhocmfjolpjbebdkcjog - kcdahmgmaagjhocpipbodaokikjkampi - klnkiajpmpkkkgpgbogmcgfjhdoljacg - lneaocagcijjdpkcabeanfpdbmapcjjg - pgfpignfckbloagkfnamnolkeaecfgfh - jplnlifepflhkbkgonidnobkakhmpnmh - jliodmnojccaloajphkingdnpljdhdok - hnmpcagpplmpfojmgmnngilcnanddlhb - ffbkglfijbcbgblgflchnbphjdllaogb - kcndmbbelllkmioekdagahekgimemejo - jdgilggpfmjpbodmhndmhojklgfdlhob - bihhflimonbpcfagfadcnbbdngpopnjb - ppajinakbfocjfnijggfndbdmjggcmde - oofgbpoabipfcfjapgnbbjjaenockbdp