event.dataset: "aws.cloudtrail" and event.provider: "ec2.amazonaws.com"
and event.action: ModifyImageAttribute and event.outcome: success
and aws.cloudtrail.request_parameters: *add=*
and not aws.cloudtrail.user_identity.invoked_by: "assets.marketplace.amazonaws.com"
Install detection rules in Elastic Security
Detect AWS EC2 AMI Shared with Another Account in the Elastic Security detection engine by installing this rule into your Elastic Stack.
To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).