The SIEM app is now a part of the Elastic Security solution.
Click
here to view SIEM documentation for previous releases.
AWS IAM Brute Force of Assume Role Policy
editAWS IAM Brute Force of Assume Role Policy
editIdentifies a high number of failed attempts to assume an AWS Identity and Access Management (IAM) role. IAM roles are used to delegate access to users or services. An adversary may attempt to enumerate IAM roles in order to determine if a role exists before attempting to assume or hijack the discovered role.
Rule type: threshold
Rule indices:
- filebeat-*
Severity: medium
Risk score: 47
Runs every: 5 minutes
Searches indices from: now-20m (Date Math format, see also Additional look-back time
)
Maximum alerts per execution: 100
References:
Tags:
- AWS
- Elastic
- SecOps
- Identity and Access
- Continuous Monitoring
Version: 1
Added (Elastic Stack release): 7.9.0
Rule authors: Elastic
Rule license: Elastic License
Investigation guide
editThe AWS Filebeat module must be enabled to use this rule.
Rule query
editevent.module:aws and event.dataset:aws.cloudtrail and event.provider:iam.amazonaws.com and event.action:UpdateAssumeRolePolicy and aws.cloudtrail.error_code:MalformedPolicyDocumentException and event.outcome:failure
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Credential Access
- ID: TA0006
- Reference URL: https://attack.mitre.org/tactics/TA0006/
-
Technique:
- Name: Brute Force
- ID: T1110
- Reference URL: https://attack.mitre.org/techniques/T1110/