AWS EC2 Encryption Disabled
editAWS EC2 Encryption Disabled
editIdentifies 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.
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: 2 (version history)
Added (Elastic Stack release): 7.9.0
Last modified (Elastic Stack release): 7.10.0
Rule authors: Elastic
Rule license: Elastic License
Potential false positives
editDisabling 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 a known behavior is causing false positives, it can be excluded from the rule.
Investigation guide
editThe AWS Filebeat module must be enabled to use this rule.
Rule query
editevent.action:DisableEbsEncryptionByDefault and event.dataset:aws.cloudtrail and event.provider:ec2.amazonaws.com and event.outcome:success
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Impact
- ID: TA0040
- Reference URL: https://attack.mitre.org/tactics/TA0040/
-
Technique:
- Name: Stored Data Manipulation
- ID: T1492
- Reference URL: https://attack.mitre.org/techniques/T1492/
Rule version history
edit- Version 2 (7.10.0 release)
-
- Formatting only