AWS KMS Customer Managed Key Disabled or Scheduled for Deletion
Elastic Stack Serverless Security
Identifies attempts to disable or schedule the deletion of an AWS KMS Customer Managed Key (CMK). Deleting an AWS KMS key is destructive and potentially dangerous. It deletes the key material and all metadata associated with the KMS key and is irreversible. After a KMS key is deleted, the data that was encrypted under that KMS key can no longer be decrypted, which means that data becomes unrecoverable.
Rule type: query
Rule indices:
- filebeat-*
- logs-aws*
Severity: medium
Risk score: 47
Runs every: 10m
Searches indices from: now-60m (https://www.elastic.co/guide/en/elasticsearch/reference/current/common-options.html#date-math[Date Math format], see also Additional look-back time)
Maximum alerts per execution: 100
References:
- https://docs.aws.amazon.com/cli/latest/reference/kms/disable-key.html
- https://docs.aws.amazon.com/cli/latest/reference/kms/schedule-key-deletion.html
Tags:
- Elastic
- Cloud
- AWS
- Continuous Monitoring
- SecOps
- Log Auditing
- Impact
Version: 1
Rule authors:
- Xavier Pich
Rule license: Elastic License v2
event.dataset:aws.cloudtrail and event.provider:kms.amazonaws.com and event.action:("DisableKey" or "ScheduleKeyDeletion") and event.outcome:success
Framework: MITRE ATT&CKTM
Tactic:
- Name: Impact
- ID: TA0040
- Reference URL: https://attack.mitre.org/tactics/TA0040/
Technique:
- Name: Data Destruction
- ID: T1485
- Reference URL: https://attack.mitre.org/techniques/T1485/