GCP Virtual Private Cloud Route Creation

Elastic Stack Serverless Security

Identifies when a Virtual Private Cloud 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: 5m

Searches indices from: None (https://www.elastic.co/guide/en/elasticsearch/reference/current/common-options.html#date-math[Date Math format], see also Additional look-back time)

Maximum alerts per execution: 100

References:

• https://cloud.google.com/vpc/docs/routes
• https://cloud.google.com/vpc/docs/using-routes

Tags:

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

Version: 6

Rule authors:

• Elastic

Rule license: Elastic License v2

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

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