Cloudtrail Change Destination Bucket (aws)

Platform	Author	Last Update
aws	Nick Jones	2024-12-02

Alter cloudtrail log destination to a bucket that target does not have access to

MITRE IDs

• T1562

Required Permissions

• cloudtrail:UpdateTrail

Required Parameters

Name	Type	Description	Example Value
trailname	str	Name of the cloudtrail to be targeted	example-cloudtrail
bucketname	str	Name of S3 bucket to redirect logs to	example-bucket

Attacker Action

aws cloudtrail update-trail --name example-cloudtrail --s3-bucket-name example-bucket

Detection Case

ELK query

When logs are ingested into ELK, the following Lucene query can be used to identify relevant events.

eventName:UpdateTrail AND eventSource:*.cloudtrail.amazonaws.com

Sigma Definition

---
title: Cloudtrail change destination bucket
id: 9be7e8b4-dd76-4396-b3ca-10c6d8df1048
status: experimental
author: Nick Jones
date: 2024-12-02
description: Alter cloudtrail log destination to a bucket that target does not have access to
logsource:
  service: cloudtrail
detection:
  selection_source:
    - eventSource: "*.cloudtrail.amazonaws.com"
  events:
    - eventName: "UpdateTrail"
  condition: selection_source and events
level: low
tags:
  - attack.T1562


falsepositives:
  - Developers making legitimate changes to the environment. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.