Analytics BIOC Informational

AWS S3 bucket data retention policy change through S3 Lifecycle rule

A retention policy was set on a S3 bucket used by a CloudTrail Trail, using a S3 Lifecycle Rule.

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

Evade detection by automatically deleting audit logs.

Investigative actions:

Review the new S3 bucket lifecycle policy. Check The cloud identity activity prior/after to the lifecycle policy modification.

Test period:
N/A (single event)
Deduplication:
5 Days