GCP VPC Firewall Rule Deletion

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	3 Hours
Required Data	Gcp Audit Log
Detection Modules	Cloud
ATT&CK Tactic	Defense Evasion (TA0005)
ATT&CK Technique	Impair Defenses: Disable or Modify Cloud Firewall (T1562.007)
Severity	Informational

Description

A GCP VPC firewall rule was deleted. An attacker might use this technique to access restricted resources.

Attacker's Goals

Access restricted resources.

Investigative actions

• Check if there were any network attempts that fit the deleted rule.
• Check The cloud identity activity prior/after to the rule deletion.