Detection rules › Sigma
Local Groups Discovery - Linux
Detects enumeration of local system groups. Adversaries may attempt to find local system groups and permission settings
Known false positives
- Legitimate administration activities
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Discovery |
Telemetry coverage
| Platform | Record / event type |
|---|---|
| Linux | Event ID 1: Process Create |
Rule body
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
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match value:"/etc/group" |
Image | ends_with |
| field:"Image" kind:ends_with |