Suspicious Azure Firewall Rule Collection Modified or Deleted (via activitylogs)

title: Suspicious Azure Firewall Rule Collection Modified or Deleted (via activitylogs)
id: 48fc750f-846e-51d0-ab4e-ffaba9ac23e2
status: stable
description: This rule detects when Rule Collections (Application, NAT, and Network) is being modified or deleted.
references:
    - https://attack.mitre.org/techniques/T1686/001/
    - https://learn.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations
author: Huntrule Team
date: 2026-05-11
tags:
    - attack.impact
    - attack.defense-impairment
    - attack.t1686.001
logsource:
    product: azure
    service: activitylogs
detection:
    selection:
        operationName:
            - MICROSOFT.NETWORK/AZUREFIREWALLS/APPLICATIONRULECOLLECTIONS/WRITE
            - MICROSOFT.NETWORK/AZUREFIREWALLS/APPLICATIONRULECOLLECTIONS/DELETE
            - MICROSOFT.NETWORK/AZUREFIREWALLS/NATRULECOLLECTIONS/WRITE
            - MICROSOFT.NETWORK/AZUREFIREWALLS/NATRULECOLLECTIONS/DELETE
            - MICROSOFT.NETWORK/AZUREFIREWALLS/NETWORKRULECOLLECTIONS/WRITE
            - MICROSOFT.NETWORK/AZUREFIREWALLS/NETWORKRULECOLLECTIONS/DELETE
    condition: selection
falsepositives:
    - Unknown
level: medium