Azure Kubernetes Sensitive Role Access

calendar Jun 4, 2025 · attack.impact attack.t1485 attack.t1496 attack.t1489  ·
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Identifies when ClusterRoles/Roles are being modified or deleted.

Sigma rule (View on GitHub)

 1title: Azure Kubernetes Sensitive Role Access
 2id: 818fee0c-e0ec-4e45-824e-83e4817b0887
 3status: test
 4description: Identifies when ClusterRoles/Roles are being modified or deleted.
 5references:
 6    - https://learn.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes
 7    - https://www.microsoft.com/security/blog/2021/03/23/secure-containerized-environments-with-updated-threat-matrix-for-kubernetes/
 8    - https://www.microsoft.com/security/blog/2020/04/02/attack-matrix-kubernetes/
 9    - https://medium.com/mitre-engenuity/att-ck-for-containers-now-available-4c2359654bf1
10author: Austin Songer @austinsonger
11date: 2021-08-07
12modified: 2022-08-23
13tags:
14    - attack.impact
15    - attack.t1485
16    - attack.t1496
17    - attack.t1489
18logsource:
19    product: azure
20    service: activitylogs
21detection:
22    selection:
23        operationName:
24            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/ROLES/WRITE
25            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/ROLES/DELETE
26            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/ROLES/BIND/ACTION
27            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/ROLES/ESCALATE/ACTION
28            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/CLUSTERROLES/WRITE
29            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/CLUSTERROLES/DELETE
30            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/CLUSTERROLES/BIND/ACTION
31            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/CLUSTERROLES/ESCALATE/ACTION
32    condition: selection
33falsepositives:
34    - ClusterRoles/Roles being modified and 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.
35    - ClusterRoles/Roles modification from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
36level: medium

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