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AWS CloudWatch Log Stream Deletion

Detects the deletion of an Amazon CloudWatch log stream using the "DeleteLogStream" API. Deleting a log stream permanently removes its associated log events and may disrupt security visibility, break audit trails, or…

Description

Detects the deletion of an Amazon CloudWatch log stream using the "DeleteLogStream" API. Deleting a log stream permanently removes its associated log events and may disrupt security visibility, break audit trails, or suppress forensic evidence. Adversaries may delete log streams to conceal malicious actions, impair monitoring pipelines, or remove artifacts generated during post-exploitation activity.

Detection logic

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Detection requirements

Platform
ContainersESXiIaaSIdentity ProviderLinuxmacOSNetwork DevicesOffice SuiteSaaSWindows

The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.

Log source category
event_index

Known benign triggers

  • CloudWatch log streams may be deleted legitimately during log rotation processes, test environment resets, or infrastructure deployments that recreate log groups and streams. Validate the identity, automation pipeline, and IP address associated with the deletion. If deletions are expected from specific CI/CD systems or administrative roles, consider adding targeted exceptions.

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