Detectionmediumtest

Azure Kubernetes Service Account Modified or Deleted

Identifies when a service account is modified or deleted.

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Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.

Launch

Austin SongerCreated Sat Aug 07Updated Tue Aug 2312d027c3-b48c-4d9d-8bb6-a732200034b2cloud

Log Source

Azureactivitylogs

ProductAzure← raw: azure

Serviceactivitylogs← raw: activitylogs

Detection Logic

detection:
    selection:
        operationName:
            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/SERVICEACCOUNTS/WRITE
            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/SERVICEACCOUNTS/DELETE
            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/SERVICEACCOUNTS/IMPERSONATE/ACTION
    condition: selection

False Positives

Service account being modified or deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.

Service account modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.

References

MITRE ATT&CK

Tactics

TA0040 · Impact