A domain was added to the trusted domains list

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	5 Days
Required Data	Google Workspace Audit Logs
Detection Modules	Identity Threat Module, SaaS Threat Detection
Detector Tags	Google Workspace
ATT&CK Tactic	Defense Impairment (TA0112)
ATT&CK Technique	Disable or Modify Tools (T1685), Domain or Tenant Policy Modification: Trust Modification (T1484.002)
Severity	Low

Description

A domain was added to the Google Workspace trusted domains list.

Attacker's Goals

An adversary may add a trusted domain to collect and exfiltrate data from their target's organization with less restrictive security controls.

Investigative actions

• Check if the identity intended to perform this action or look for signs that the user account is compromised (e.g. abnormal logins, unusual activity).
• Investigate the new domain in the trusted domains list.
• Follow further actions done by the account.

Variations

A domain was added to the trusted domains list by a non Google Workspace administrative user

Synopsis

Field	Value
ATT&CK Tactic	Defense Impairment (TA0112)
ATT&CK Technique	Disable or Modify Tools (T1685), Domain or Tenant Policy Modification: Trust Modification (T1484.002)
Severity	Low

Description

A domain was added to the Google Workspace trusted domains list.

Attacker's Goals

An adversary may add a trusted domain to collect and exfiltrate data from their target's organization with less restrictive security controls.

Investigative actions

• Check if the identity intended to perform this action or look for signs that the user account is compromised (e.g. abnormal logins, unusual activity).
• Investigate the new domain in the trusted domains list.
• Follow further actions done by the account.

A domain was added to the trusted domains list from an unusual ASN

Synopsis

Field	Value
ATT&CK Tactic	Defense Impairment (TA0112)
ATT&CK Technique	Disable or Modify Tools (T1685), Domain or Tenant Policy Modification: Trust Modification (T1484.002)
Severity	Low

Description

A domain was added to the Google Workspace trusted domains list.

Attacker's Goals

An adversary may add a trusted domain to collect and exfiltrate data from their target's organization with less restrictive security controls.

Investigative actions

• Check if the identity intended to perform this action or look for signs that the user account is compromised (e.g. abnormal logins, unusual activity).
• Investigate the new domain in the trusted domains list.
• Follow further actions done by the account.