Identifies when a firewall rule is created in Google Cloud Platform (GCP). Virtual Private Cloud (VPC) firewall rules can be configured to allow or deny connections to or from virtual machine (VM) instances. An adversary may create a new firewall rule in order to weaken their target’s security controls and allow more permissive ingress or egress traffic flows for their benefit.
Rule type: query
Risk score: 21
Runs every: 5 minutes
Maximum alerts per execution: 100
- Continuous Monitoring
- Configuration Audit
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 rules may be created by system administrators. Verify that the firewall configuration change was expected. Exceptions can be added to this rule to filter expected behavior.
The GCP Filebeat module must be enabled to use this rule.
event.dataset:(googlecloud.audit or gcp.audit) and event.action:v*.compute.firewalls.insert
Framework: MITRE ATT&CKTM
- Version 3 (7.11.2 release)
- Formatting only
- Version 2 (7.11.0 release)
Updated query, changed from:
event.dataset:googlecloud.audit and event.action:v*.compute.firewalls.insert