Elastic low stable kql

AWS EC2 Deprecated AMI Discovery

Identifies when a user has queried for deprecated Amazon Machine Images (AMIs) in AWS. This may indicate an adversary looking for outdated AMIs that may be vulnerable to exploitation. While deprecated AMIs are not inherently malicious or indicative of a breach, they may be more susceptible to vulnerabilities and should be investigated for potential security risks.

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Detection Logic

data_stream.dataset: "aws.cloudtrail"
    and event.provider: "ec2.amazonaws.com"
    and event.action: "DescribeImages"
    and event.outcome: "success"
    and aws.cloudtrail.flattened.request_parameters.includeDeprecated: "true"

False Positives

  • ⚠ Legitimate use of deprecated AMIs for testing or development purposes.
  • ⚠ Automated tools or scripts that query for deprecated AMIs as part of a security assessment.
  • ⚠ Misconfigured applications or services that rely on deprecated AMIs for compatibility reasons.
  • ⚠ Administrators or developers who are unaware of the deprecation status of AMIs they are using.

Field Validations

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