Google Cloud IAM policy modified

gcp

Classification:

attack

Tactic:

TA0003-persistence

Technique:

T1098-account-manipulation

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Goal

Detect a change to the IAM policy.

Strategy

This rule lets you monitor Google Cloud Admin activity audit logs to determine when the SetIamPolicy method is invoked.

Triage and response

Review the log and inspect the policy deltas (@data.protoPayload.serviceData.policyDelta.bindingDeltas) and ensure none of the actions are REMOVE.