Phoenix Studio
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 live sigma-cli backend, then reveal pipelines only when you actually need them.
Indexed Rules
3,707
Ready to search
Backends
17
Live from sigconverter.io
CLI Versions
10
Newest: 2.0.2
Translation Workspace
Shape the rule before it leaves Phoenix
Tune Translation
Active Rule
Whoami.EXE Execution Anomaly
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Whoami.EXE Execution Anomaly
Using Splunk · Default · sigma-cli 2.0.2
Translation controls
Adjust the rule on the left, then regenerate when you want a fresh backend-native query.
BackendSplunkFormatDefaultVersion2.0.2
title: Whoami.EXE Execution Anomaly
id: 8de1cbe8-d6f5-496d-8237-5f44a721c7a0
status: test
description: Detects the execution of whoami.exe with suspicious parent processes.
references:
- https://brica.de/alerts/alert/public/1247926/agent-tesla-keylogger-delivered-inside-a-power-iso-daa-archive/
- https://app.any.run/tasks/7eaba74e-c1ea-400f-9c17-5e30eee89906/
- https://www.youtube.com/watch?v=DsJ9ByX84o4&t=6s
author: Florian Roth (Nextron Systems)
date: 2021-08-12
modified: 2025-03-06
tags:
- attack.discovery
- attack.t1033
- car.2016-03-001
logsource:
category: process_creation
product: windows
detection:
selection:
- Image|endswith: '\whoami.exe'
- OriginalFileName: 'whoami.exe'
filter_main_known_parents:
# This list can be any legitimate shell or application that you expect whoami to run from
ParentImage|endswith:
- '\cmd.exe'
- '\powershell_ise.exe'
- '\powershell.exe'
- '\pwsh.exe'
filter_optional_ms_monitoring_agent:
ParentImage|endswith: ':\Program Files\Microsoft Monitoring Agent\Agent\MonitoringHost.exe'
filter_main_parent_null:
ParentImage: null
filter_main_parent_empty:
ParentImage:
- ''
- '-'
condition: selection and not 1 of filter_main_* and not 1 of filter_optional_*
falsepositives:
- Admin activity
- Scripts and administrative tools used in the monitored environment
- Monitoring activity
level: medium
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/windows/process_creation/proc_creation_win_whoami_parent_anomaly.yml