Sigma rule: AWS EC2 Disable EBS Encryption

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-7d255f4f7c01, updated 2021-08-20T00:00:00.000Z.

Rule

Title
AWS EC2 Disable EBS Encryption
Status
stable
Level
medium
Author
Sittikorn S
Date
2021-06-29
Modified
2021-08-20
File
rules/cloud/aws/cloudtrail/aws_ec2_disable_encryption.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

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

Log source

product
aws
service
cloudtrail

Detection

selection:
    eventSource: ec2.amazonaws.com
    eventName: DisableEbsEncryptionByDefault
condition: selection

False positives (as the rule lists them)

  • System Administrator Activities
  • DEV, UAT, SAT environment. You should apply this rule with PROD account only.

Tags

  • attack.impact
  • attack.t1486
  • attack.t1565

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/cloud/aws/cloudtrail/aws_ec2_disable_encryption.yml

Sources and licences

  • SigmaHQ

    "AWS EC2 Disable EBS Encryption" by Sittikorn S (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/cloud/aws/cloudtrail/aws_ec2_disable_encryption.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: AWS EC2 Disable EBS Encryption",
entity page, dataset version ref-7d255f4f7c01, updated 2021-08-20T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/16124c2d-e40b-4fcc-8f2c-5ab7870a2223 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 16124c2d-e40b-4fcc-8f2c-5ab7870a2223, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.