GCP Virtual Private Cloud Network Deletion

Identifies when a Virtual Private Cloud (VPC) network is deleted in Google Cloud Platform (GCP). A VPC network is a virtual version of a physical network within a GCP project. Each VPC network has its own subnets, routes, and firewall, as well as other elements. An adversary may delete a VPC network in order to disrupt their target’s network and business operations.

Rule type: query

Rule indices:

filebeat-*
logs-gcp*

Severity: medium

Risk score: 47

Runs every: 5m

Searches indices from: None (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

https://cloud.google.com/vpc/docs/vpc

Tags:

Domain: Cloud
Data Source: GCP
Data Source: Google Cloud Platform
Use Case: Configuration Audit
Tactic: Defense Evasion

Version: 104

Rule authors:

Elastic

Rule license: Elastic License v2

Investigation guide

edit

Setup

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

Rule query

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event.dataset:gcp.audit and event.action:v*.compute.networks.delete and event.outcome:success

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
Technique:
- Name: Impair Defenses
- ID: T1562
- Reference URL: https://attack.mitre.org/techniques/T1562/
Sub-technique:
- Name: Disable or Modify Cloud Firewall
- ID: T1562.007
- Reference URL: https://attack.mitre.org/techniques/T1562/007/

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