Possible File or Folder Permissions Change (via auditd)
This rule detects file and folder permission changes.
SigmalowLinuxv1
sigma
possible-file-or-folder-permissions-change-via-auditd
title: Possible File or Folder Permissions Change (via auditd)
id: ea402ec3-9dbe-5f72-96ed-50ec58a7b194
status: stable
description: This rule detects file and folder permission changes.
references:
- https://attack.mitre.org/techniques/T1222/002/
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1222.002/T1222.002.md
author: Huntrule Team
date: 2026-06-09
tags:
- attack.defense-impairment
- attack.t1222.002
logsource:
product: linux
service: auditd
detection:
selection:
type: 'EXECVE'
a0|contains:
- 'chmod'
- 'chown'
condition: selection
falsepositives:
- Unknown
level: low
Known false positives
- Unknown
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.