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The public catalogue of detection rules. Every entry carries its source, the identifier it had there, its licence and its ATT&CK mapping.

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LowElastic detection rules

Access Control List Modification via setfacl

This rule detects Linux Access Control List (ACL) modification via the setfacl command. Attackers may use the setfacl utility to modify file and directory permissions in order to evade detection and maintain persistence on a compromised system.

ATT&CK coverage

Defense Impairment

T1222File and Directory Permissions Modification24 detections cover this technique
- T1222.002Linux and Mac Permissions 18 detections cover this technique

Detection requirements

Log source category: event_index

Detection logic

Published to signed-in readers

The query as its source wrote it, its canonical form, and the content hash that pins this exact revision.

Provenance

Where this detection came from, and what you may do with it.

At source: Open at source
Written by: Elastic
Licence: Elastic License 2.0Read the licence
Published: Aug 27, 2026
Version: 1