IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
« AWS Deletion of RDS Instance or Cluster AWS EC2 Full Network Packet Capture Detected »
Elastic Docs ›Elastic Security Solution [8.5] ›Detections and alerts ›Prebuilt rule reference

AWS EC2 Encryption Disabled

edit

AWS EC2 Encryption Disabled

edit

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: 10 minutes

Searches indices from: now-60m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

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

Version: 100 (version history)

Added (Elastic Stack release): 7.9.0

Last modified (Elastic Stack release): 8.5.0

Rule authors: Elastic

Rule license: Elastic License v2

Potential false positives

edit

Disabling encryption may be done by a system or network administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. Disabling encryption by unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule.

Investigation guide

edit











Rule query
edit








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











Threat mapping
edit




Framework: MITRE ATT&CKTM














Rule version history
edit










Version 100 (8.5.0 release)








    

  • 
Formatting only

    • 









Version 8 (8.4.0 release)








    

  • 
Formatting only

    • 









Version 6 (7.13.0 release)








    

  • 

    Updated query, changed from:
    

    

    

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

    

    • 









Version 5 (7.12.0 release)








    

  • 
Formatting only

    • 









Version 4 (7.11.2 release)








    

  • 
Formatting only

    • 









Version 3 (7.11.0 release)








    

  • 
Formatting only

    • 









Version 2 (7.10.0 release)








    

  • 
Formatting only

    • 




















« AWS Deletion of RDS Instance or Cluster


AWS EC2 Full Network Packet Capture Detected »