Detection rules › Sigma
Local Groups Discovery - Linux
Detects enumeration of local system groups. Adversaries may attempt to find local system groups and permission settings
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Discovery | T1069.001 Permission Groups Discovery: Local Groups |
Event coverage
| Provider | Event |
|---|---|
| Sysmon-for-Linux | Event ID 1 |
Rule body yaml
title: Local Groups Discovery - Linux
id: 676381a6-15ca-4d73-a9c8-6a22e970b90d
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
Stages and Predicates
Stage 0: condition
1 of selection_*Stage 1: selection_1
selection_1:
Image|endswith: '/groups'
Stage 2: selection_2
selection_2:
Image|endswith:
- '/cat'
- '/ed'
- '/head'
- '/less'
- '/more'
- '/nano'
- '/tail'
- '/vi'
- '/vim'
CommandLine|contains: '/etc/group'
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
CommandLine | match |
|
Image | ends_with |
|