Restore Public AWS RDS Instance — Sigma Rule

Rule metadata and linked tags

Author: faloker. Source status: test; severity: high. Source dates: 2020-02-12 / 2022-10-09.

{
  "product": "aws",
  "service": "cloudtrail"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: b15f0a86150e455237cd494602cd4305a500afbf1ebd61a4164129d665cafcbe

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Restore Public AWS RDS Instance
id: c3f265c7-ff03-4056-8ab2-d486227b4599
status: test
description: Detects the recovery of a new public database instance from a snapshot. It may be a part of data exfiltration.
references:
    - https://github.com/RhinoSecurityLabs/pacu/blob/866376cd711666c775bbfcde0524c817f2c5b181/pacu/modules/rds__explore_snapshots/main.py
author: faloker
date: 2020-02-12
modified: 2022-10-09
tags:
    - attack.exfiltration
    - attack.t1020
logsource:
    product: aws
    service: cloudtrail
detection:
    selection_source:
        eventSource: rds.amazonaws.com
        responseElements.publiclyAccessible: 'true'
        eventName: RestoreDBInstanceFromDBSnapshot
    condition: selection_source
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/RhinoSecurityLabs/pacu/blob/866376cd711666c775bbfcde0524c817f2c5b181/pacu/modules/rds__explore_snapshots/main.py