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.

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Indexed Rules

3,707

Ready to search

Backends

Live from sigconverter.io

CLI Versions

Newest: 2.0.2

Translation Workspace

Shape the rule before it leaves Phoenix

Tune Translation

Active Rule

PsExec Service Child Process Execution as LOCAL SYSTEM

sigma-cli version

Backend

Format

Target Profile

Splunk

Splunk SPL & tstats data model queries

Format Mode

Default

Plain SPL queries

Conversion Output

PsExec Service Child Process Execution as LOCAL SYSTEM

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: PsExec Service Child Process Execution as LOCAL SYSTEM
id: 7c0dcd3d-acf8-4f71-9570-f448b0034f94
related:
    - id: fa91cc36-24c9-41ce-b3c8-3bbc3f2f67ba
      type: similar
status: test
description: Detects suspicious launch of the PSEXESVC service on this system and a sub process run as LOCAL_SYSTEM (-s), which means that someone remotely started a command on this system running it with highest privileges and not only the privileges of the login user account (e.g. the administrator account)
references:
    - https://learn.microsoft.com/en-us/sysinternals/downloads/psexec
author: Florian Roth (Nextron Systems)
date: 2022-07-21
modified: 2023-02-28
tags:
    - attack.execution
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage: 'C:\Windows\PSEXESVC.exe'
        User|contains: # covers many language settings
            - 'AUTHORI'
            - 'AUTORI'
    condition: selection
falsepositives:
    - Users that debug Microsoft Intune issues using the commands mentioned in the official documentation; see https://learn.microsoft.com/en-us/mem/intune/apps/intune-management-extension
level: high

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_sysinternals_psexesvc_as_system.yml