Detection rules › Sigma
Google Workspace MFA Disabled
Detects when multi-factor authentication (MFA) is disabled.
Known false positives
- MFA may be disabled and performed by a system administrator.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Impact | No specific technique |
Telemetry coverage
Rule body
title: Google Workspace MFA Disabled
id: 780601d1-6376-4f2a-884e-b8d45599f78c
status: test
description: Detects when multi-factor authentication (MFA) is disabled.
references:
- https://cloud.google.com/logging/docs/audit/gsuite-audit-logging#3
- https://developers.google.com/admin-sdk/reports/v1/appendix/activity/admin-security-settings#ENFORCE_STRONG_AUTHENTICATION
- https://developers.google.com/admin-sdk/reports/v1/appendix/activity/admin-security-settings?hl=en#ALLOW_STRONG_AUTHENTICATION
author: Austin Songer
date: 2021-08-26
modified: 2023-10-11
tags:
- attack.impact
logsource:
product: gcp
service: google_workspace.admin
detection:
selection_base:
eventService: admin.googleapis.com
eventName:
- ENFORCE_STRONG_AUTHENTICATION
- ALLOW_STRONG_AUTHENTICATION
selection_eventValue:
new_value: 'false'
condition: all of selection*
falsepositives:
- MFA may be disabled and performed by a system administrator.
level: medium
Stages and Predicates
Stage 0: condition
all of selection*Stage 1: selection_base
selection_base:
eventService: admin.googleapis.com
eventName:
- ENFORCE_STRONG_AUTHENTICATION
- ALLOW_STRONG_AUTHENTICATION
Stage 2: selection_eventValue
selection_eventValue:
new_value: 'false'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
eventName | eq |
| field:"aws::eventName" kind:eq |
eventService | eq |
| field:"gcp::service_name" kind:eq value:"admin.googleapis.com" |
new_value | eq |
| field:"new_value" kind:eq value:"false" |