diff --git a/rules/cloud/azure_firewall_modified_or_deleted.yml b/rules/cloud/azure_firewall_modified_or_deleted.yml new file mode 100644 index 000000000..d37781a6e --- /dev/null +++ b/rules/cloud/azure_firewall_modified_or_deleted.yml @@ -0,0 +1,22 @@ +title: Azure Firewall Modified or Deleted +id: 512cf937-ea9b-4332-939c-4c2c94baadcd +description: Identifies when a firewall is created, modified, or deleted. +author: Austin Songer +status: experimental +date: 2021/08/08 +references: + - https://docs.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations +logsource: + service: azure.activitylogs +detection: + selection: + properties.message: + - MICROSOFT.NETWORK/AZUREFIREWALLS/WRITE + - MICROSOFT.NETWORK/AZUREFIREWALLS/DELETE + condition: selection +level: medium +tags: + - attack.impact +falsepositives: + - Firewall 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. + - Firewall modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.