Suspicious New Network Route Added (via cloudtrail)

This rule detects the addition of a new network route to a route table in AWS.

SigmamediumCloudv1
sigma
title: Suspicious New Network Route Added (via cloudtrail)
id: 3519db03-c0ea-5bb7-b724-e46acbb605fb
status: stable
description: This rule detects the addition of a new network route to a route table in AWS.
references:
    - https://attack.mitre.org/techniques/T1686/001/
    - https://www.gorillastack.com/blog/real-time-events/important-aws-cloudtrail-security-events-tracking/
author: Huntrule Team
date: 2026-05-13
tags:
    - attack.defense-impairment
    - attack.t1686.001
logsource:
    product: aws
    service: cloudtrail
detection:
    selection:
        eventSource: 'ec2.amazonaws.com'
        eventName: 'CreateRoute'
    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.