IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Access Control List Modification via setfacl
editAccess Control List Modification via setfacl
editThis rule detects Linux Access Control List (ACL) modification via the setfacl command.
Rule type: eql
Rule indices:
- logs-endpoint.events.*
- endgame-*
- auditbeat-*
- logs-auditd_manager.auditd-*
Severity: low
Risk score: 21
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Domain: Endpoint
- OS: Linux
- Use Case: Threat Detection
- Tactic: Defense Evasion
- Data Source: Elastic Defend
- Data Source: Elastic Endgame
- Data Source: Auditd Manager
Version: 2
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editprocess where host.os.type == "linux" and event.type == "start" and
event.action in ("exec", "exec_event", "executed", "process_started") and
process.name == "setfacl" and not (
process.command_line == "/bin/setfacl --restore=-" or
process.args == "/var/log/journal/"
)
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: File and Directory Permissions Modification
- ID: T1222
- Reference URL: https://attack.mitre.org/techniques/T1222/
-
Sub-technique:
- Name: Linux and Mac File and Directory Permissions Modification
- ID: T1222.002
- Reference URL: https://attack.mitre.org/techniques/T1222/002/