LoFP / 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.

Techniques

• T1485
• T1562

Sample rules

AWS CloudWatch Log Stream Deletion

• source: elastic
• technicques:
  • T1485
  • T1562

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

event.dataset: "aws.cloudtrail" 
  and event.provider: "logs.amazonaws.com" 
  and event.action: "DeleteLogStream" 
  and event.outcome: "success"
  and source.ip: * 
  and not user_agent.original : "AWS Internal"