New Kubernetes Service Account Created — Sigma Rule

Rule metadata and linked tags

Author: Leo Tsaousis (@laripping). Source status: test; severity: low. Source dates: 2024-03-26 / not supplied.

{
  "category": "application",
  "product": "kubernetes",
  "service": "audit"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: df11ac62d57fde381dccd1f46fe1dedd3cfeae4404e16c74dcf6aabc5a088119

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: New Kubernetes Service Account Created
id: e31bae15-83ed-473e-bf31-faf4f8a17d36
related:
    - id: 12d027c3-b48c-4d9d-8bb6-a732200034b2
      type: derived
status: test
description: |
    Detects creation of new Kubernetes service account, which could indicate an attacker's attempt to persist within a cluster.
references:
    - https://microsoft.github.io/Threat-Matrix-for-Kubernetes/techniques/container%20service%20account/
author: Leo Tsaousis (@laripping)
date: 2024-03-26
tags:
    - attack.persistence
    - attack.t1136
logsource:
    category: application
    product: kubernetes
    service: audit
detection:
    selection:
        verb: 'create'
        objectRef.resource: 'serviceaccounts'
    condition: selection
falsepositives:
    - Unknown
level: low

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://microsoft.github.io/Threat-Matrix-for-Kubernetes/techniques/container%20service%20account/