AWS EC2 Encryption Disabled

Elastic Stack Serverless Security

Identifies disabling of Amazon Elastic Block Store (EBS) encryption by default in the current region. Disabling encryption by default does not change the encryption status of your existing volumes.

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/AWSEC2/latest/UserGuide/EBSEncryption.html
• https://awscli.amazonaws.com/v2/documentation/api/latest/reference/ec2/disable-ebs-encryption-by-default.html
• https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_DisableEbsEncryptionByDefault.html

Tags:

• Elastic
• Cloud
• AWS
• Continuous Monitoring
• SecOps
• Data Protection

Version: 8

Rule authors:

• Elastic

Rule license: Elastic License v2

event.dataset:aws.cloudtrail and event.provider:ec2.amazonaws.com and event.action:DisableEbsEncryptionByDefault and event.outcome:success

Framework: MITRE ATT&CKTM

• Tactic:

  • Name: Impact
  • ID: TA0040
  • Reference URL: https://attack.mitre.org/tactics/TA0040/

• Technique:

  • Name: Data Manipulation
  • ID: T1565
  • Reference URL: https://attack.mitre.org/techniques/T1565/

• Sub-technique:

  • Name: Stored Data Manipulation
  • ID: T1565.001
  • Reference URL: https://attack.mitre.org/techniques/T1565/001/