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Detectionmediumtest

Google Cloud Firewall Modified or Deleted

Detects when a firewall rule is modified or deleted in Google Cloud Platform (GCP).

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Launch
Austin SongerCreated Fri Aug 13Updated Sun Oct 09fe513c69-734c-4d4a-8548-ac5f609be82bcloud
Log Source
Google Cloudgcp.audit
ProductGoogle Cloud← raw: gcp
Servicegcp.audit← raw: gcp.audit
Detection Logic
Detection Logic1 selector
detection:
    selection:
        gcp.audit.method_name:
            - v*.Compute.Firewalls.Delete
            - v*.Compute.Firewalls.Patch
            - v*.Compute.Firewalls.Update
            - v*.Compute.Firewalls.Insert
    condition: selection
False Positives

Firewall rules being modified or deleted may be performed by a system administrator. Verify that the firewall configuration change was expected.

Exceptions can be added to this rule to filter expected behavior.

References
1
Resolving title…
cloud.google.com
2
Resolving title…
developers.google.com
MITRE ATT&CK
Rule Metadata
Rule ID
fe513c69-734c-4d4a-8548-ac5f609be82b
Status
test
Level
medium
Type
Detection
Created
Fri Aug 13
Modified
Sun Oct 09
Author
Austin Songer
Path
rules/cloud/gcp/audit/gcp_firewall_rule_modified_or_deleted.yml
Raw Tags
attack.defense-evasionattack.t1562
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