Suspicious AWS ConsoleLogin Failed Authentication (via cloudtrail)

This rule detects failed AWS console login attempts due to authentication failures. Monitoring these events is crucial for identifying potential brute-force attacks or unauthorized access attempts to AWS accounts.

SigmamediumCloudv1
sigma
title: Suspicious AWS ConsoleLogin Failed Authentication (via cloudtrail)
id: 93da42aa-cc4b-5fd9-8dd7-34be93bdae65
status: stable
description: This rule detects failed AWS console login attempts due to authentication failures. Monitoring these events is crucial for identifying potential brute-force attacks or unauthorized access attempts to AWS accounts.
references:
    - https://attack.mitre.org/techniques/T1110/
    - https://naikordian.github.io/blog/posts/brute-force-aws-console/
    - https://help.fortinet.com/fsiem/Public_Resource_Access/7_2_1/rules/PH_RULE_AWS_Management_Console_Brute_Force_of_Root_User_Identity.htm
    - https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/attack_techniques/T1110.001/aws_login_failure/aws_cloudtrail_events.json
author: Huntrule Team
date: 2026-04-06
tags:
    - attack.credential-access
    - attack.t1110
logsource:
    product: aws
    service: cloudtrail
detection:
    selection:
        eventName: 'ConsoleLogin'
        errorMessage: 'Failed authentication'
    condition: selection
falsepositives:
    - Unknown
level: medium

Known false positives

  • Unknown

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.