GCP Virtual Private Cloud Route Creationedit

Identifies when a virtual private cloud (VPC) route is created in Google Cloud Platform (GCP). Google Cloud routes define the paths that network traffic takes from a virtual machine (VM) instance to other destinations. These destinations can be inside a Google VPC network or outside it. An adversary may create a route in order to impact the flow of network traffic in their target’s cloud environment.

Rule type: query

Rule indices:

  • filebeat-*
  • logs-gcp*

Severity: low

Risk score: 21

Runs every: 5 minutes

Searches indices from: now-6m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Elastic
  • Cloud
  • GCP
  • Continuous Monitoring
  • SecOps
  • Configuration Audit

Version: 7 (version history)

Added (Elastic Stack release): 7.10.0

Last modified (Elastic Stack release): 8.1.0

Rule authors: Elastic

Rule license: Elastic License v2

Potential false positivesedit

Virtual Private Cloud routes may be created by system administrators. Verify that the configuration change was expected. Exceptions can be added to this rule to filter expected behavior.

Investigation guideedit

## Config

The GCP Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.

Rule queryedit

event.dataset:(googlecloud.audit or gcp.audit) and
event.action:(v*.compute.routes.insert or
"beta.compute.routes.insert")

Rule version historyedit

Version 7 (8.1.0 release)
  • Formatting only
Version 6 (8.0.0 release)
  • Formatting only
Version 5 (7.13.0 release)
  • Updated query, changed from:

    event.dataset:(googlecloud.audit or gcp.audit) and
    event.action:(v*.compute.routes.insert or beta.compute.routes.insert)
Version 4 (7.12.0 release)
  • Formatting only
Version 3 (7.11.2 release)
  • Formatting only
Version 2 (7.11.0 release)
  • Updated query, changed from:

    event.dataset:googlecloud.audit and
    event.action:(v*.compute.routes.insert or beta.compute.routes.insert)