GCP unauthorized user activity

Classification:

compliance

Set up the gcp integration.

Overview

Goal

Detect when unauthorized activity by a user is detected in GCP

Strategy

Monitor GCP logs and detect when a user account makes an API request and the request returns the status code equal to 7 within the log attribute @data.protoPayload.status.code. The status code 7 indicates the user account did not have permission to make the API call.

Triage & Response

1. Determine the user who made the unauthorized calls.
2. Determine if there is a misconfiguration in IAM permissions or whether an attacker has compromised the user account.