Uninstall Sysinternals Sysmon

 1title: Uninstall Sysinternals Sysmon
 2id: 6a5f68d1-c4b5-46b9-94ee-5324892ea939
 3status: test
 4description: Detects the removal of Sysmon, which could be a potential attempt at defense evasion
 5references:
 6    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1562.001/T1562.001.md#atomic-test-11---uninstall-sysmon
 7author: frack113
 8date: 2022-01-12
 9modified: 2026-06-29
10tags:
11    - attack.defense-impairment
12    - attack.t1685
13logsource:
14    category: process_creation
15    product: windows
16detection:
17    selection_pe:
18        - Image|endswith:
19              - \Sysmon64.exe
20              - \Sysmon64a.exe
21              - \Sysmon.exe
22        - Description: 'System activity monitor'
23    selection_cli:
24        CommandLine|contains|windash: '-u'
25    condition: all of selection_*
26falsepositives:
27    - Legitimate administrators might use this command to remove Sysmon for debugging purposes
28level: high