New Network Route Added

Detects the addition of a new network route to a route table in AWS.

Sigma rule (View on GitHub)

 1title: New Network Route Added
 2id: c803b2ce-c4a2-4836-beae-b112010390b1
 3status: test
 4description: |
 5        Detects the addition of a new network route to a route table in AWS.
 6references:
 7    - https://www.gorillastack.com/blog/real-time-events/important-aws-cloudtrail-security-events-tracking/
 8author: jamesc-grafana
 9date: 2024/07/11
10tags:
11    - attack.initial_access
12    - attack.t1190
13logsource:
14    product: aws
15    service: cloudtrail
16detection:
17    selection:
18        eventSource: 'ec2.amazonaws.com'
19        eventName: 'CreateRoute'
20    condition: selection
21falsepositives:
22    - New VPC Creation requiring setup of a new route table
23    - New subnets added requiring routing setup
24level: medium

References

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