Detection: CloudTrail Trail S3 Logging Bucket Updated

Overview

Detect when the S3 logging bucket associated with an AWS CloudTrail trail was updated. Changes to the logging bucket configuration can disrupt log delivery, expose sensitive log data, or create gaps in security monitoring. Monitoring these updates ensures the integrity, availability, and security of CloudTrail logs.

References:

Usage

Run the detection in your terminal:

powerpipe detection run aws_cloudtrail_log_detections.detection.cloudtrail_trail_s3_logging_bucket_updated

Snapshot and share results via Turbot Pipes:

powerpipe login
powerpipe detection run aws_cloudtrail_log_detections.detection.cloudtrail_trail_s3_logging_bucket_updated --share

SQL

This detection uses a named query:

select
  tp_timestamp as timestamp,
string_split(event_source, '.')[1] || ':' || event_name as operation,
request_parameters ->> 'name' as resource,
user_identity.arn as actor,
tp_source_ip as source_ip,
tp_index as account_id,
aws_region as region,
tp_id as source_id,
*

from
  aws_cloudtrail_log
where
  event_source = 'cloudtrail.amazonaws.com'
  and event_name = 'UpdateTrail'
  and (request_parameters ->> 's3BucketName') is not null
  and (response_elements ->> 'trailARN') is not null
  -- here we exclude console-based events by requiring 'session_credential_from_console' to be null, because console requests show all fields while CLI only shows updated fields.
  and session_credential_from_console is null
  and error_code is null

order by
  event_time desc;

Detection: CloudTrail Trail S3 Logging Bucket Updated

Overview

Usage

SQL

Tags