AWS RDS DB Snapshot Shared with Another Account

Last updated 7 months ago on 2025-01-10

Created a year ago on 2024-06-25

About

Identifies an AWS RDS DB snapshot being shared with another AWS account. DB snapshots contain a full backup of an entire DB instance including sensitive data that can be abused if shared with unauthorized accounts or made public. Adversaries may use snapshots to restore a DB Instance in an environment they control as a means of data exfiltration.

Tags

Domain: CloudData Source: AWSData Source: Amazon Web ServicesData Source: AWS RDSUse Case: Threat DetectionTactic: ExfiltrationLanguage: eql

Severity

medium

Risk Score

MITRE ATT&CK™

Exfiltration (TA0010)(opens in a new tab or window)

↳ Transfer Data to Cloud Account (T1537)(opens in a new tab or window)

False Positive Examples

DB snapshot sharing is a common practice in AWS environments. Ensure that the sharing is authorized before taking action.

License

Elastic License v2(opens in a new tab or window)

Definition

Rule Type: Event Correlation Rule
Integration Pack: Prebuilt Security Detection Rules
Index Patterns: filebeat-*logs-aws.cloudtrail-*
Related Integrations: aws(opens in a new tab or window)
Query

any where event.dataset == "aws.cloudtrail"
    and event.provider == "rds.amazonaws.com"
    and event.outcome == "success"
    and event.action in ("ModifyDBSnapshotAttribute", "ModifyDBClusterSnapshotAttribute")
    and stringContains(aws.cloudtrail.request_parameters, "attributeName=restore")
    and stringContains(aws.cloudtrail.request_parameters, "valuesToAdd=[*]")

Install detection rules in Elastic Security

Detect AWS RDS DB Snapshot 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).