Google Compute Engine network route created or modified

gcp

Classification:

attack

Tactic:

TA0005-defense-evasion

Technique:

T1578-modify-cloud-compute-infrastructure

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Goal

Detect when a firewall rule is created or modified.

Strategy

This rule lets you monitor GCE activity audit logs to determine if a firewall is being adjusted by showing you when any of the following methods are invoked:

  • beta.compute.routes.insert
  • beta.compute.routes.patch

Triage and response

Verify that the GCE network route is configured properly and that the user intended to modify the firewall.