Detect AWS Console Login by User from New Region
The following analytic identifies AWS console login attempts by users from a new region. It leverages AWS CloudTrail events and compares current login regions against a baseline of previously seen regions for each…
Description
The following analytic identifies AWS console login attempts by users from a new region. It leverages AWS CloudTrail events and compares current login regions against a baseline of previously seen regions for each user. This activity is significant as it may indicate unauthorized access attempts or compromised credentials. If confirmed malicious, an attacker could gain unauthorized access to AWS resources, potentially leading to data breaches, resource manipulation, or further lateral movement within the cloud environment.
Detection logic
Detection requirements
- Platform
- IaaSPRE
The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.
- Log source category
- aws_cloudtrail
Known benign triggers
- When a legitimate new user logins for the first time, this activity will be detected. Check how old the account is and verify that the user activity is legitimate.
MITRE ATT&CK mappings
0 exclusive techniques.This is coverage no other published rule has; it is not this rule's total technique count.
No references are available for this detection.
From the source
- At source
- Open at source
- Upstream identifier
- 9f31aa8e-e37c-46bc-bce1-8b3be646d026
- Tagged by the source as
- AWS Identity and Access Management Account TakeoverCompromised User AccountSuspicious AWS Login ActivitiesSuspicious Cloud Authentication ActivitiesAWS InstancecloudSplunk CloudSplunk EnterpriseSplunk Enterprise Securitythreat
Licence
- Published under
- Apache License 2.0Read the licence
- Attribution
- Required
- Obtained under
- Apache-2.0Read the origin licence
Authorship
- Written by
- Published
- Aug 26, 2026
- Version
- 1