An unusual cloud identity was granted permissions to a BigQuery resource

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), Defense Impairment (TA0112)
ATT&CK Technique	Transfer Data to Cloud Account (T1537), Modify Cloud Compute Infrastructure (T1578)
Severity	Informational

Description

An unusual cloud identity was granted permissions to a BigQuery table or dataset.

Attacker's Goals

Exfiltrate sensitive data that resides inside BigQuery tables or datasets.

Investigative actions

• Check if {cloud_best_identity_match} intended to change BigQuery resource policy.
• Verify if the affected tables or datasets did not contain any sensitive information.

Variations

Cloud admin granted an unknown identity permissions to a BigQuery resource

Synopsis

Field	Value
ATT&CK Tactic	Exfiltration (TA0010), Defense Impairment (TA0112)
ATT&CK Technique	Transfer Data to Cloud Account (T1537), Modify Cloud Compute Infrastructure (T1578)
Severity	Informational

Description

An unusual cloud identity was granted permissions to a BigQuery table or dataset.

Attacker's Goals

Exfiltrate sensitive data that resides inside BigQuery tables or datasets.

Investigative actions

• Check if {cloud_best_identity_match} intended to change BigQuery resource policy.
• Verify if the affected tables or datasets did not contain any sensitive information.