Elastic Security Detection Rules

Google Workspace Custom Gmail Route Created or Modified

Last updated 2 months ago on 2024-09-23
Created 2 years ago on 2022-09-13

About

Detects when a custom Gmail route is added or modified in Google Workspace. Adversaries can add a custom e-mail route for outbound mail to route these e-mails to their own inbox of choice for data gathering. This allows adversaries to capture sensitive information from e-mail and potential attachments, such as invoices or payment documents. By default, all email from current Google Workspace users with accounts are routed through a domain's mail server for inbound and outbound mail.
Tags
Domain: CloudData Source: Google WorkspaceTactic: Collection
Severity
medium
Risk Score
47
MITRE ATT&CK™

Collection (TA0009)(opens in a new tab or window)

↳ Email Collection (T1114)(opens in a new tab or window)

False Positive Examples
Administrators may create custom email routes in Google Workspace based on organizational policies, administrative preference or for security purposes regarding spam.
License
Elastic License v2(opens in a new tab or window)

Definition

Rule Type
Query (Kibana Query Language)
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
filebeat-*logs-google_workspace*
Related Integrations

google_workspace(opens in a new tab or window)

Query
event.dataset:"google_workspace.admin" and event.action:("CREATE_GMAIL_SETTING" or "CHANGE_GMAIL_SETTING")
  and google_workspace.event.type:"EMAIL_SETTINGS" and google_workspace.admin.setting.name:("EMAIL_ROUTE" or "MESSAGE_SECURITY_RULE")

Install detection rules in Elastic Security

Detect Google Workspace Custom Gmail Route Created or Modified 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).