BigQuery table or query results exfiltrated to a foreign project

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	1 Day
Required Data	Gcp Audit Log
Detection Modules	Cloud
Detector Tags	Data Detection & Response
ATT&CK Tactic	Exfiltration (TA0010)
ATT&CK Technique	Transfer Data to Cloud Account (T1537)
Severity	Informational

Description

A cloud identity exfiltrated BigQuery table data to a foreign storage service.

Attacker's Goals

Exfiltrate sensitive data that resides inside BigQuery table.

Investigative actions

• Check if {cloud_best_identity_match} intended to transfer data from BigQuery table.
• Verify if the affected table did not contain any sensitive information.

Variations

BigQuery table or query results exfiltrated to a foreign project by cloud admin identity

Synopsis

Field	Value
ATT&CK Tactic	Exfiltration (TA0010)
ATT&CK Technique	Transfer Data to Cloud Account (T1537)
Severity	Informational

Description

A cloud identity exfiltrated BigQuery table data to a foreign storage service.

Attacker's Goals

Exfiltrate sensitive data that resides inside BigQuery table.

Investigative actions

• Check if {cloud_best_identity_match} intended to transfer data from BigQuery table.
• Verify if the affected table did not contain any sensitive information.

BigQuery table or query results exfiltrated to a foreign project by an unknown identity

Synopsis

Field	Value
ATT&CK Tactic	Exfiltration (TA0010)
ATT&CK Technique	Transfer Data to Cloud Account (T1537)
Severity	Low

Description

A cloud identity exfiltrated BigQuery table data to a foreign storage service.

Attacker's Goals

Exfiltrate sensitive data that resides inside BigQuery table.

Investigative actions

• Check if {cloud_best_identity_match} intended to transfer data from BigQuery table.
• Verify if the affected table did not contain any sensitive information.