title: Removal Of AMSI Provider Registry Keys
id: 41d1058a-aea7-4952-9293-29eaaf516465
status: test
description: 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.
references:
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md
- https://seclists.org/fulldisclosure/2020/Mar/45
author: frack113
date: 2021-06-07
modified: 2025-10-07
tags:
- attack.defense-impairment
- attack.t1685
logsource:
product: windows
category: registry_delete
detection:
selection:
TargetObject|endswith:
- '{2781761E-28E0-4109-99FE-B9D127C57AFE}' # IOfficeAntiVirus
- '{A7C452EF-8E9F-42EB-9F2B-245613CA0DC9}' # ProtectionManagement.dll
filter_main_defender:
Image|startswith:
- 'C:\ProgramData\Microsoft\Windows Defender\Platform\'
- 'C:\Program Files\Windows Defender\'
- 'C:\Program Files (x86)\Windows Defender\'
Image|endswith: '\MsMpEng.exe'
condition: selection and not 1 of filter_main_*
falsepositives:
- Unlikely
level: high
regression_tests_path: regression_data/rules/windows/registry/registry_delete/registry_delete_removal_amsi_registry_key/info.yml
simulation:
- type: atomic-red-team
name: AMSI Bypass - Remove AMSI Provider Reg Key
technique: T1562.001
atomic_guid: 13f09b91-c953-438e-845b-b585e51cac9b