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
PowerShell Script Dropped Via PowerShell.EXE
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
PowerShell Script Dropped Via PowerShell.EXE
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: PowerShell Script Dropped Via PowerShell.EXE
id: 576426ad-0131-4001-ae01-be175da0c108
status: test
description: Detects PowerShell creating a PowerShell file (.ps1). While often times this behavior is benign, sometimes it can be a sign of a dropper script trying to achieve persistence.
references:
- https://www.zscaler.com/blogs/security-research/onenote-growing-threat-malware-distribution
author: frack113
date: 2023-05-09
tags:
- attack.persistence
logsource:
product: windows
category: file_event
detection:
selection:
Image|endswith:
- '\powershell.exe'
- '\pwsh.exe'
TargetFilename|endswith: '.ps1'
filter_main_psscriptpolicytest:
TargetFilename|contains: '__PSScriptPolicyTest_'
filter_main_appdata:
TargetFilename|startswith: 'C:\Users\'
TargetFilename|contains: '\AppData\Local\Temp\'
filter_main_windows_temp:
TargetFilename|startswith: 'C:\Windows\Temp\'
condition: selection and not 1 of filter_main_*
falsepositives:
- False positives will differ depending on the environment and scripts used. Apply additional filters accordingly.
level: low
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_powershell_drop_powershell.yml