LoFP / misconfigured applications or services that rely on deprecated amis for compatibility reasons.

Techniques

• T1580

Sample rules

AWS EC2 Deprecated AMI Discovery

• source: elastic
• technicques:
  • T1580

Description

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 This may indicate an adversary whom is looking for outdated AMIs that may be vulnerable to exploitation.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

Detection logic

event.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"
    and aws.cloudtrail.request_parameters: *owner=*