Install Root Certificate — Sigma Rule

Rule metadata and linked tags

Author: Ömer Günal, oscd.community. Source status: test; severity: low. Source dates: 2020-10-05 / 2022-07-07.

{
  "product": "linux",
  "category": "process_creation"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 8e7af70ca8e0aeea873015d891cf423f175d0053fd861b8cef64920ee5046db8

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: Install Root Certificate
id: 78a80655-a51e-4669-bc6b-e9d206a462ee
status: test
description: Detects installation of new certificate on the system which attackers may use to avoid warnings when connecting to controlled web servers or C2s
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1553.004/T1553.004.md
author: Ömer Günal, oscd.community
date: 2020-10-05
modified: 2022-07-07
tags:
    - attack.defense-impairment
    - attack.t1553.004
logsource:
    product: linux
    category: process_creation
detection:
    selection:
        Image|endswith:
            - '/update-ca-certificates'
            - '/update-ca-trust'
    condition: selection
falsepositives:
    - Legitimate administration activities
level: low

Original YAML and metadata in JSON

False positives

• Legitimate administration activities

Source references

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1553.004/T1553.004.md