Convert indexed Sigma rules into analyst-ready detections.
This studio is built around Phoenix's own rule corpus, not a blank editor. Search by title or rule id, choose a local pySigma backend, then reveal pipelines only when you actually need them.
Indexed Rules
3,779
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Backends
3
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pySigma Versions
2
Newest: 2.0.1
Translation Workspace
Shape the rule before it leaves Phoenix
Tune Translation
Active Rule
Suspicious Login Activity Classified By Google
Backends follow their supported pySigma version. Select 1.5.1 for Elasticsearch, Kusto, and other 1.x plugins.
Target Profile
Splunk
Splunk through pysigma-backend-splunk.
Format Mode
Default
Default pySigma output mode for this backend.
Suspicious Login Activity Classified By Google
Using Splunk · Default · pySigma 2.0.1
Translation controls
Adjust the rule on the left, then regenerate when you want a fresh backend-native query.
title: Suspicious Login Activity Classified By Google
id: 38360161-76c4-4283-842e-efcf997dafc8
status: experimental
description: Detects Google Workspace login activity that's classified as suspicious by Google.
references:
- https://cloud.google.com/logging/docs/audit/gsuite-audit-logging
- https://cloud.google.com/logging/docs/audit/understanding-audit-logs
- https://developers.google.com/workspace/admin/reports/v1/appendix/activity/login#suspicious_login
- https://developers.google.com/workspace/admin/reports/v1/appendix/activity/login#suspicious_login_less_secure_app
- https://developers.google.com/workspace/admin/reports/v1/appendix/activity/login#suspicious_programmatic_login
author: Tom Kluter
date: 2026-04-28
modified: 2026-09-14
tags:
- attack.initial-access
- attack.privilege-escalation
- attack.persistence
- attack.stealth
- attack.t1078.004
logsource:
product: gcp
service: google_workspace.login
detection:
selection:
protoPayload.serviceName: 'login.googleapis.com'
protoPayload.metadata.event.eventName:
- 'suspicious_login_less_secure_app'
- 'suspicious_login'
- 'suspicious_programmatic_login'
condition: selection
falsepositives:
- Legitimate logins
level: medium
CLI command
Sigma CLI 4.0.0 · Install matching versions, then run from the Phoenix project directory.
python -m pip install 'sigma-cli==4.0.0' 'pysigma==2.0.1' 'pysigma-backend-splunk==3.0.0'
sigma convert --without-pipeline -t splunk -f default 'sigma/rules/cloud/gcp/gworkspace/login/gcp_gworkspace_suspicious_login.yml'