AWS Root Login Without MFAedit
Identifies attempts to login to AWS as the root user without using multi-factor authentication (MFA). Amazon AWS best practices indicate that the root user should be protected by MFA.
Rule type: query
Rule indices:
- filebeat-*
- logs-aws*
Severity: high
Risk score: 73
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
- Identity and Access
Version: 5 (version history)
Added (Elastic Stack release): 7.9.0
Last modified (Elastic Stack release): 7.13.0
Rule authors: Elastic
Rule license: Elastic License v2
Potential false positivesedit
Some organizations allow login with the root user without MFA, however, this is not considered best practice by AWS and increases the risk of compromised credentials.
Investigation guideedit
## Config The AWS Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.
Rule queryedit
event.dataset:aws.cloudtrail and event.provider:signin.amazonaws.com and event.action:ConsoleLogin and aws.cloudtrail.user_identity.type:Root and aws.cloudtrail.console_login.additional_eventdata.mfa_used:false and event.outcome:success
Threat mappingedit
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Privilege Escalation
- ID: TA0004
- Reference URL: https://attack.mitre.org/tactics/TA0004/
-
Technique:
- Name: Valid Accounts
- ID: T1078
- Reference URL: https://attack.mitre.org/techniques/T1078/
Rule version historyedit
- Version 5 (7.13.0 release)
-
- Formatting only
- Version 4 (7.12.0 release)
-
- Formatting only
- Version 3 (7.11.2 release)
-
- Formatting only
- Version 2 (7.10.0 release)
-
-
Updated query, changed from:
event.module:aws and event.dataset:aws.cloudtrail and event.provider:signin.amazonaws.com and event.action:ConsoleLogin and aws.cloudtrail.user_identity.type:Root and aws.cloudtrail.console_login.additional_eventdata.mfa_used:false and event.outcome:success
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