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MediumSigmaHQ Bryan Lim

GCP Access Policy Deleted

Detects when an access policy that is applied to a GCP cloud resource is deleted. An adversary would be able to remove access policies to gain access to a GCP cloud resource.

Detection logic

Detection requirements

Platform: Containers ESXi IaaS Identity Provider Linux macOS Network Devices Office Suite SaaS Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source product: gcp
Log source service: gcp_audit

Known benign triggers

Legitimate administrative activities

References

Links the source published beside this detection. Reference is the link the source wrote, unmodified. Class is decided by this catalogue from the host and path, not stated by the source. Cited by counts published detections citing the same resource, including this one, and the sources beneath it count the repositories this catalogue ingests, which is not the same as independent research.
Reference	Class	Cited by
cloud.google.com/access-context-manager/docs/audit-logging	Product documentation	Only this detection cites it
cloud.google.com/logging/docs/audit/understanding-audit-logs	Product documentation	3
cloud.google.com/logging/docs/reference/audit/auditlog/rest/Shared.Types/AuditLog	Product documentation	Only this detection cites it

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