Local Groups Discovery - Linux

Title: Local Groups Discovery - Linux
Status: test
Description:Detects enumeration of local system groups. Adversaries may attempt to find local system groups and permission settings
References:
  -https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1069.001/T1069.001.md
Author: Ömer Günal, Alejandro Ortuno, oscd.community
Date: 2020-10-11
modified:2025-06-04
Tags:

• -'attack.discovery'
• -'attack.t1069.001'

Logsource:

• category: process_creation
• product: linux

Detection:
  selection_1:
    Image|endswith: '/groups'
  selection_2:
    Image|endswith:
      -'/cat'
      -'/ed'
      -'/head'
      -'/less'
      -'/more'
      -'/nano'
      -'/tail'
      -'/vi'
      -'/vim'

    CommandLine|contains: '/etc/group'
  condition:1 of selection_*
Falsepositives:
  -Legitimate administration activities
Level: low