Analytics BIOC Informational

GCP logging sink modification

A GCP logging sink entity was modified. Logs that match the logging sink rule will not arrive at their destination. An attacker might use this technique to evade detection.

Module:
Cortex Cloud
Licensed by:
Cloud Runtime Security (CRS)
Data source:
Gcp Audit Log
ATT&CK tactics: Defense Evasion (TA0005)
ATT&CK techniques: Impair Defenses (T1562) Impair Defenses: Disable or Modify Cloud Logs (T1562.008)
Detector tags: Cloud Log Tampering Analytics
Attacker's goals:

Evade detection by limiting collected data.

Investigative actions:

Identify the relevant logs impacted by the modification. Review The cloud identity activity before and after the logging sink modification.

Test period:
N/A (single event)
Deduplication:
5 Days
2 variations:
  • GCP logging sink modification Medium (parent: Informational) Adds Cloud Service Discovery (T1526)
  • GCP logging sink modification Low (parent: Informational)