Removal Of AMSI Provider Registry Keys

 1title: Removal Of AMSI Provider Registry Keys
 2id: 41d1058a-aea7-4952-9293-29eaaf516465
 3status: test
 4description: Detects the deletion of AMSI provider registry key entries in HKLM\Software\Microsoft\AMSI. This technique could be used by an attacker in order to disable AMSI inspection.
 5references:
 6    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md
 7    - https://seclists.org/fulldisclosure/2020/Mar/45
 8author: frack113
 9date: 2021-06-07
10modified: 2023-02-08
11tags:
12    - attack.defense-evasion
13    - attack.t1562.001
14logsource:
15    product: windows
16    category: registry_delete
17detection:
18    selection:
19        EventType: DeleteKey
20        TargetObject|endswith:
21            - '{2781761E-28E0-4109-99FE-B9D127C57AFE}' # IOfficeAntiVirus
22            - '{A7C452EF-8E9F-42EB-9F2B-245613CA0DC9}' # ProtectionManagement.dll
23    condition: selection
24falsepositives:
25    - Unlikely
26level: high

References

• atomic-red-team/atomics/T1562.001/T1562.001.md at f339e7da7d05f6057fdfcdd3742bfcf365fee2a9 · redcanaryco/atomic-red-team

  

  Small and highly portable detection tests based on MITRE's ATT&CK. - redcanaryco/atomic-red-team

  
  Read More

• Full Disclosure: Defense in depth -- the Microsoft way (part 64): Windows Defender loads and exeutes arbitrary DLLs

  

  Defense in depth -- the Microsoft way (part 64): Windows Defender loads and exeutes arbitrary DLLs From: "Stefan Kanthak" Date: Fri, 27 Mar 2020 05:27:56 +0100 Hi @ll, in September 2017, Microsoft ...

  
  Read More

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