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AWS KMS key deleted or scheduled for deletion

cloudtrail

Classification:

attack

Tactic:

Framework:

cis-aws

Control:

4.7

Goal

Detect when a KMS (Key Management Service) key is deleted or scheduled for deletion.

Strategy

This rule lets you monitor these CloudTrail API calls to detect if an attacker is deleting KMS keys:

Triage and response

  1. Determine if user ARN: {{@userIdentity.arn}} in your organization should be making this call.
  2. If the user did not make the API call:
  • Rotate the credentials.
  • Use the Cloud SIEM - User Investigation OOTB dashboard to investigate other potential unauthorized API calls from this user.

Changelog

  • 16 March 2022 - Rule severity and markdown updated.
  • 16 November 2022 - Rule query updated.