Kubernetes Anonymous User Create/Update/Patch Pods Request

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Kubernetes Anonymous User Create/Update/Patch Pods Request

This rule detects attempts to create, update, or patch pods by an anonymous user. An anonymous user is a user that is not authenticated or authorized to access the Kubernetes API server. Creating, updating, or patching pods is a common activity for attackers to gain access to the cluster and execute commands.

Rule type: eql

Rule indices:

logs-kubernetes.audit_logs-*

Severity: medium

Risk score: 47

Runs every: 5m

Searches indices from: None (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

Data Source: Kubernetes
Domain: Kubernetes
Use Case: Threat Detection
Tactic: Execution
Resources: Investigation Guide

Version: 1

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

edit

any where event.dataset == "kubernetes.audit_logs" and (
    kubernetes.audit.user.username in ("system:anonymous", "system:unauthenticated") or
    kubernetes.audit.user.username == null or
    kubernetes.audit.user.username == ""
  ) and kubernetes.audit.level in ("RequestResponse", "ResponseComplete", "Request") and kubernetes.audit.verb in ("create", "update", "patch") and
kubernetes.audit.objectRef.resource == "pods"

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Execution
- ID: TA0002
- Reference URL: https://attack.mitre.org/tactics/TA0002/

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