Synopsis
Activation Period |
14 Days |
Training Period |
30 Days |
Test Period |
N/A (single event) |
Deduplication Period |
2 Days |
Required Data |
|
Detection Modules |
Identity Threat Module |
Detector Tags |
|
ATT&CK Tactic |
|
ATT&CK Technique |
|
Severity |
Medium |
Description
A rule was set up to forward emails outside the Google Workspace domain.
Attacker's Goals
- Adversaries may abuse email forwarding rules to monitor the activities of a victim, steal information, and further gain intelligence on the victim or the victim's organization to use as part of further exploits or operations.
- Furthermore, email forwarding rules can allow adversaries to maintain persistent access to victim's emails even after compromised credentials are reset by administrators.
Investigative actions
- Check if the identity intended to preform this action,
- and look for signs that the user account and mailbox are compromised (e.g. abnormal logins, unusual activity).
- Check if the forwarding domain is an unknown external domain and look up its reputation.
- Follow further actions done by the account.