Auditing Configuration Changes on Linux Host — Sigma Rule

Rule metadata and linked tags

Author: Mikhail Larin, oscd.community. Source status: test; severity: high. Source dates: 2019-10-25 / 2021-11-27.

{
  "product": "linux",
  "service": "auditd"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 5de115711f0fa9f358070b4beaa6ed167a05aeb4c5d317c91bbe7442e2b2e816

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Auditing Configuration Changes on Linux Host
id: 977ef627-4539-4875-adf4-ed8f780c4922
status: test
description: Detect changes in auditd configuration files
references:
    - https://github.com/Neo23x0/auditd/blob/master/audit.rules
    - Self Experience
author: Mikhail Larin, oscd.community
date: 2019-10-25
modified: 2021-11-27
tags:
    - attack.defense-impairment
    - attack.t1685
logsource:
    product: linux
    service: auditd
detection:
    selection:
        type: PATH
        name:
            - /etc/audit/*
            - /etc/libaudit.conf
            - /etc/audisp/*
    condition: selection
falsepositives:
    - Legitimate administrative activity
level: high

Original YAML and metadata in JSON

False positives

• Legitimate administrative activity

Source references

• https://github.com/Neo23x0/auditd/blob/master/audit.rules
• Self Experience (source note; no public URL supplied)