Sysmon Discovery Via Default Driver Altitude Using Findstr.EXE

Title: Sysmon Discovery Via Default Driver Altitude Using Findstr.EXE
Status: test
Description:Detects usage of "findstr" with the argument "385201". Which could indicate potential discovery of an installed Sysinternals Sysmon service using the default driver altitude (even if the name is changed).
References:
  -https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1518.001/T1518.001.md#atomic-test-5---security-software-discovery---sysmon-service
Author: frack113
Date: 2021-12-16
modified:2023-11-14
Tags:

• -'attack.discovery'
• -'attack.t1518.001'

Logsource:

• category: process_creation
• product: windows

Detection:
  selection_img:
    - Image|endswith:
      - '\find.exe'
      - '\findstr.exe'
    - OriginalFileName:
      - 'FIND.EXE'
      - 'FINDSTR.EXE'
  selection_cli:
    CommandLine|contains: ' 385201'
  condition:all of selection_*
Falsepositives:
  -Unknown
Level: high