Identifies the deletion of a firewall policy in Azure. An adversary may delete a firewall policy in an attempt to evade defenses and/or to eliminate barriers in carrying out their initiative.
Rule type: query
Risk score: 21
Runs every: 5 minutes
Maximum alerts per execution: 100
- Continuous Monitoring
- Network Security
Version: 3 (version history)
Added (Elastic Stack release): 7.10.0
Last modified (Elastic Stack release): 7.11.2
Rule authors: Elastic
Rule license: Elastic License
Firewall policy deletions may be done by a system or network administrator. Verify whether the username, hostname, and/or resource name should be making changes in your environment. Firewall policy deletions from unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
The Azure Filebeat module must be enabled to use this rule.
event.dataset:azure.activitylogs and azure.activitylogs.operation_name :MICROSOFT.NETWORK/FIREWALLPOLICIES/DELETE and event.outcome:(Success or success)
Framework: MITRE ATT&CKTM
- Version 3 (7.11.2 release)
- Formatting only
- Version 2 (7.11.0 release)
Updated query, changed from:
event.dataset:azure.activitylogs and azure.activitylogs.operation_name :MICROSOFT.NETWORK/FIREWALLPOLICIES/DELETE and event.outcome:Success