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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.

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