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.

Browse Rules Explore Ecosystem

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

Startup Folder File Write

sigma-cli version

Backend

Format

Target Profile

Splunk

Splunk SPL & tstats data model queries

Format Mode

Default

Plain SPL queries

Conversion Output

Startup Folder File Write

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: Startup Folder File Write
id: 2aa0a6b4-a865-495b-ab51-c28249537b75
related:
    - id: 28208707-fe31-437f-9a7f-4b1108b94d2e
      type: similar
status: test
description: A General detection for files being created in the Windows startup directory. This could be an indicator of persistence.
references:
    - https://github.com/OTRF/detection-hackathon-apt29/issues/12
    - https://github.com/OTRF/ThreatHunter-Playbook/blob/2d4257f630f4c9770f78d0c1df059f891ffc3fec/docs/evals/apt29/detections/5.B.1_611FCA99-97D0-4873-9E51-1C1BA2DBB40D.md
author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
date: 2020-05-02
modified: 2025-12-03
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.t1547.001
logsource:
    product: windows
    category: file_event
detection:
    selection:
        TargetFilename|contains: '\Microsoft\Windows\Start Menu\Programs\StartUp'
    filter_main_update:
        - Image:
              - 'C:\Windows\System32\wuauclt.exe'
              - 'C:\Windows\uus\ARM64\wuaucltcore.exe'
        - TargetFilename|startswith:
              - 'C:\$WINDOWS.~BT\NewOS\'
              - 'C:\$WinREAgent\Scratch\Mount\'
    filter_optional_onenote:
        Image|endswith: '\ONENOTE.EXE'
        TargetFilename|endswith: '\Send to OneNote.lnk'
    condition: selection and not 1 of filter_main_* and not 1 of filter_optional_*
falsepositives:
    - FP could be caused by legitimate application writing shortcuts for example. This folder should always be inspected to make sure that all the files in there are legitimate
level: medium

CLI command

Copy the exact command to reproduce this translation locally.

sigma convert --without-pipeline -t splunk -f default rules/windows/file/file_event/file_event_win_startup_folder_file_write.yml