Suspicious Azure Kubernetes Network Policy Change (via activitylogs)

title: Suspicious Azure Kubernetes Network Policy Change (via activitylogs)
id: e5adc2b6-7c3d-5529-a7e9-63425b634133
status: stable
description: This rule detects when a Azure Kubernetes network policy is modified or deleted.
references:
    - https://attack.mitre.org/techniques/T1489/
    - https://attack.mitre.org/techniques/T1496/
    - https://attack.mitre.org/techniques/T1485/
    - https://learn.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes
    - https://www.microsoft.com/security/blog/2021/03/23/secure-containerized-environments-with-updated-threat-matrix-for-kubernetes/
    - https://www.microsoft.com/security/blog/2020/04/02/attack-matrix-kubernetes/
    - https://medium.com/mitre-engenuity/att-ck-for-containers-now-available-4c2359654bf1
author: Huntrule Team
date: 2026-06-01
tags:
    - attack.impact
    - attack.credential-access
    - attack.t1485
    - attack.t1496
    - attack.t1489
logsource:
    product: azure
    service: activitylogs
detection:
    selection:
        operationName:
            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/NETWORKING.K8S.IO/NETWORKPOLICIES/WRITE
            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/NETWORKING.K8S.IO/NETWORKPOLICIES/DELETE
            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/EXTENSIONS/NETWORKPOLICIES/WRITE
            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/EXTENSIONS/NETWORKPOLICIES/DELETE
    condition: selection
falsepositives:
    - Unknown
level: medium