AWS S3 Bucket Server Access Logging Disabled

Last updated 7 months ago on 2025-01-15

Created a year ago on 2024-07-12

About

Identifies when server access logging is disabled for an Amazon S3 bucket. Server access logs provide a detailed record of requests made to an S3 bucket. When server access logging is disabled for a bucket, it could indicate an adversary's attempt to impair defenses by disabling logs that contain evidence of malicious activity.

Tags

Domain: CloudData Source: AWSData Source: Amazon Web ServicesData Source: Amazon S3Use Case: Asset VisibilityTactic: Defense EvasionLanguage: eql

Severity

medium

Risk Score

MITRE ATT&CK™

Defense Evasion (TA0005)(opens in a new tab or window)

↳ Impair Defenses (T1562)(opens in a new tab or window)

False Positive Examples

Bucket logging may be disabled by a system or network administrator. Verify whether the user identity and/or user agent should be making changes in your environment. Bucket component deletions by unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.

License

Elastic License v2(opens in a new tab or window)

Definition

Rule Type: Event Correlation Rule
Integration Pack: Prebuilt Security Detection Rules
Index Patterns: filebeat-*logs-aws.cloudtrail*
Related Integrations: aws(opens in a new tab or window)
Query

any where event.dataset == "aws.cloudtrail"
   and event.action == "PutBucketLogging"
   and event.outcome == "success"
   and not stringContains(aws.cloudtrail.request_parameters, "LoggingEnabled")

Install detection rules in Elastic Security

Detect AWS S3 Bucket Server Access Logging Disabled in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).