Elastic Security Detection Rules

AWS IAM Roles Anywhere Trust Anchor Created with External CA

Last updated 5 months ago on 2025-01-15
Created a year ago on 2024-04-20

About

Identifies when an AWS IAM Roles Anywhere Trust Anchor with an external certificate authority is created. AWS Roles Anywhere profiles are legitimate profiles that can be created by administrators to allow access from any location. This rule detects when a trust anchor is created with an external certificate authority that is not managed by AWS Certificate Manager Private Certificate Authority (ACM PCA). Adversaries may accomplish this to maintain persistence in the environment.
Tags
Domain: CloudData Source: AWSData Source: Amazon Web ServicesData Source: AWS IAMUse Case: Identity and Access AuditTactic: PersistenceLanguage: kuery
Severity
medium
Risk Score
47
MITRE ATT&CK™

Persistence (TA0003)(opens in a new tab or window)

↳ Account Manipulation (T1098)(opens in a new tab or window)

False Positive Examples
AWS IAM Roles Anywhere Trust Anchors are legitimate profiles that can be created by administrators to allow access from any location. Ensure that the trust anchor is created by a legitimate administrator and that the external certificate authority is authorized.
License
Elastic License v2(opens in a new tab or window)

Definition

Rule Type
Query (Kibana Query Language)
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
filebeat-*logs-aws.cloudtrail-*
Related Integrations

aws(opens in a new tab or window)

Query
event.dataset: aws.cloudtrail
    and event.provider: rolesanywhere.amazonaws.com
    and event.action: CreateTrustAnchor
    and event.outcome: success
    and not aws.cloudtrail.request_parameters: *sourceType=AWS_ACM_PCA*

Install detection rules in Elastic Security

Detect AWS IAM Roles Anywhere Trust Anchor Created with External CA in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).