Cloudtrail Alter Encryption Configuration (aws)

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

Alter cloudtrail encryption configuration such that log ingestion can no longer read logs

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
kmskeyid	str	KMS key ID to use, supply an empty string to disable encryption

Attacker Action

aws cloudtrail update-trail --name example-cloudtrail --kms-key-id

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 alter encryption configuration
id: 76e19d12-2ed2-4dfc-b9e9-f3b235ee471a
status: experimental
author: Nick Jones
date: 2024-12-02
description: Alter cloudtrail encryption configuration such that log ingestion can no longer read logs
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.