LoFP / legitimate users may export dynamodb tables for various reasons, such as data analysis or backup purposes. ensure that the user has the necessary permissions and that the exporttabletopointintime operation is authorized before taking action.

Techniques

• T1567

Sample rules

AWS DynamoDB Table Exported to S3

• source: elastic
• technicques:
  • T1567

Description

Identifies when an AWS DynamoDB table is exported to S3. Adversaries may use the ExportTableToPointInTime operation to collect sensitive information or exfiltrate data from DynamoDB tables. This rule detects unusual user activity by monitoring for the ExportTableToPointInTime action in CloudTrail logs. This is a New Terms rule that only flags when this behavior is observed by the “user.name” for the first time.

Detection logic

event.dataset: "aws.cloudtrail"
    and event.provider: "dynamodb.amazonaws.com"
    and event.action: "ExportTableToPointInTime"
    and event.outcome: "success"