Suspicious activity on logging bucket

Cortex XSIAM Analytics Alert Reference by Alert name

Product
Cortex XSIAM
Last date published
2026-03-10
Category
Analytics Alert Reference
Index by
Alert name

Synopsis

Activation Period

14 Days

Training Period

30 Days

Test Period

N/A (single event)

Deduplication Period

1 Day

Required Data

  • Requires:
    • AWS Audit Log

Detection Modules

Cloud

Detector Tags

ATT&CK Tactic

Defense Evasion (TA0005)

ATT&CK Technique

Severity

Low

Description

An identity performed a suspicious activity on bucket used to store CloudTrail logs.

Attacker's Goals

Evade detection by tampering the logs.

Investigative actions

  • Verify whether the identity attempted to access the bucket.
  • Verify no logs were modified in the bucket.