Skip to content

Exfiltrate Compute Disk by sharing it

Platform: GCP


  • Exfiltration


This attack technique shares a compute disk with a ficticious GCP Project. The attacker could then create a snapshot of the disk in their GCP project.

Attacker Actions:

  • Attempt to update the IAM policy of a compute disk granting access to a User outside of the Google Cloud Organization.
  • Resulting event name: v1.compute.disks.setIamPolicy
  • Assigned IAM Permission: compute.disks.setIamPolicy

Workflow Inputs:

Specify which derf attacker service account this attack should run as.


Clean Up:


Execution Instructions

  • See User Guide for Execution Instructions via the Google Cloud Console
  • Programmatically execute this workflow with the following cli command:
gcloud workflows run gcp-impersonate-sa-srt `--data={"sa": "01"}` 

Detection Artifacts

Refer to Stratus Red Team documentation for detailed detection artifacts produced by this attack technique.

Organization Policy Constraints

An organization policy is a configuration of restrictions which can be applied at several levels of your Google Cloud resource hierarchy.

This attack technique can be prevented with the Domain restricted sharing constraint by making use of the constraints/iam.allowedPolicyMemberDomains list by confining who can be granted IAM Policy to a defined list of domains.

See Google Documentation for a complete list of Organization Policy Constraints available.