Uninstall Sysinternals Sysmon

Title: Uninstall Sysinternals Sysmon
Status: test
Description:Detects the removal of Sysmon, which could be a potential attempt at defense evasion
References:
  -https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md#atomic-test-11---uninstall-sysmon
Author: frack113
Date: 2022-01-12
modified:2026-06-29
Tags:

• -'attack.defense-impairment'
• -'attack.t1685'

Logsource:

• category: process_creation
• product: windows

Detection:
  selection_pe:
    - Image|endswith:
      - '\Sysmon64.exe'
      - '\Sysmon64a.exe'
      - '\Sysmon.exe'
Description:'System activity monitor'   selection_cli:
    CommandLine|contains|windash: '-u'
  condition:all of selection_*
Falsepositives:
  -Legitimate administrators might use this command to remove Sysmon for debugging purposes
Level: high