Phoenix Studio
Convert indexed Sigma rules into analyst-ready detections.
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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
Unusually Long PowerShell CommandLine
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Unusually Long PowerShell CommandLine
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: Unusually Long PowerShell CommandLine
id: d0d28567-4b9a-45e2-8bbc-fb1b66a1f7f6
status: test
description: Detects unusually long PowerShell command lines with a length of 1000 characters or more
references:
- https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse
author: oscd.community, Natalia Shornikova
date: 2020-10-06
modified: 2023-04-14
tags:
- attack.execution
- attack.t1059.001
- detection.threat-hunting
logsource:
category: process_creation
product: windows
detection:
selection_powershell:
- Image|endswith:
- '\powershell.exe'
- '\pwsh.exe'
- OriginalFileName:
- 'PowerShell.EXE'
- 'pwsh.dll'
- Description: 'Windows Powershell'
- Product: 'PowerShell Core 6'
selection_length:
CommandLine|re: '.{1000,}'
condition: all of selection_*
falsepositives:
- Unknown
level: low
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_powershell_abnormal_commandline_size.yml