Title:
Azure Firewall Rule Collection Modified or Deleted
Status:
test
Description:Identifies when Rule Collections (Application, NAT, and Network) is being modified or deleted.
References:
-https://learn.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations
Author: Austin Songer @austinsonger
Date: 2021-08-08
modified:2022-08-23
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:
-Rule Collections (Application, NAT, and Network) 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.
-Rule Collections (Application, NAT, and Network) modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
Level:
medium
