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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

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

Microsoft Workflow Compiler Execution

Target Profile

Splunk

Splunk SPL & tstats data model queries

Format Mode

Default

Plain SPL queries

Conversion Output

Microsoft Workflow Compiler Execution

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: Microsoft Workflow Compiler Execution
id: 419dbf2b-8a9b-4bea-bf99-7544b050ec8d
status: test
description: |
    Detects the execution of Microsoft Workflow Compiler, which may permit the execution of arbitrary unsigned code.
references:
    - https://posts.specterops.io/arbitrary-unsigned-code-execution-vector-in-microsoft-workflow-compiler-exe-3d9294bc5efb
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218/T1218.md
    - https://lolbas-project.github.io/lolbas/Binaries/Microsoft.Workflow.Compiler/
author: Nik Seetharaman, frack113
date: 2019-01-16
modified: 2023-02-03
tags:
    - attack.defense-evasion
    - attack.execution
    - attack.t1127
    - attack.t1218
    - detection.threat-hunting
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        - Image|endswith: '\Microsoft.Workflow.Compiler.exe'
        - OriginalFileName: 'Microsoft.Workflow.Compiler.exe'
    condition: selection
falsepositives:
    - Legitimate MWC use (unlikely in modern enterprise environments)
level: medium

CLI command

Copy the exact command to reproduce this translation locally.

sigma convert --without-pipeline -t splunk -f default rules-threat-hunting/windows/process_creation/proc_creation_win_microsoft_workflow_compiler_execution.yml