Kubernetes Azure detect RBAC authorization by account

Name:Kubernetes Azure detect RBAC authorization by account
id:47af7d20-0607-4079-97d7-7a29af58b54e
version:3
date:2024-10-17
author:Rod Soto, Splunk
status:deprecated
type:Hunting
Description:This search provides information on Kubernetes RBAC authorizations by accounts, this search can be modified by adding rare or top to see both extremes of RBAC by accounts occurrences
Data_source:

search:`kubernetes_azure` category=kube-audit
| spath input=properties.log
| search annotations.authorization.k8s.io/reason=*
| table sourceIPs{} user.username userAgent annotations.authorization.k8s.io/reason |stats count by user.username annotations.authorization.k8s.io/reason
| rare user.username annotations.authorization.k8s.io/reason |`kubernetes_azure_detect_rbac_authorization_by_account_filter`

how_to_implement:You must install the Add-on for Microsoft Cloud Services and Configure Kube-Audit data diagnostics
known_false_positives:Not all RBAC Authorications are malicious. RBAC authorizations can uncover malicious activity specially if sensitive Roles have been granted.
References:
drilldown_searches:
  :
tags:
  analytic_story:
    - 'Kubernetes Sensitive Role Activity'
  asset_type:Azure AKS Kubernetes cluster
  confidence:50
  impact:50
  message:tbd
  observable:
    name:'user.username'
    type:'User'
    - role:
      - 'Victim'
  product:
    - 'Splunk Enterprise'
    - 'Splunk Enterprise Security'
    - 'Splunk Cloud'
  required_fields:
    - '_time'
  risk_score:25
  security_domain:threat

tests:
  :
manual_test:None