new subnets added requiring routing setup

source: <a href=https://github.com/SigmaHQ/sigma/blob/master/rules/cloud/aws/cloudtrail/aws_cloudtrail_new_route_added.yml>sigma
technicques: t1190

Techniques

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

condition: selection
selection:
  eventName: CreateRoute
  eventSource: ec2.amazonaws.com