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
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Active Rule
Potential Suspicious PowerShell Module File Created
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Potential Suspicious PowerShell Module File Created
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: Potential Suspicious PowerShell Module File Created
id: e8a52bbd-bced-459f-bd93-64db45ce7657
status: test
description: Detects the creation of a new PowerShell module in the first folder of the module directory structure "\WindowsPowerShell\Modules\malware\malware.psm1". This is somewhat an uncommon practice as legitimate modules often includes a version folder.
references:
- Internal Research
- https://learn.microsoft.com/en-us/powershell/scripting/developer/module/understanding-a-windows-powershell-module?view=powershell-7.3
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-05-09
tags:
- attack.persistence
logsource:
category: file_event
product: windows
detection:
selection:
TargetFilename|endswith:
# Note: Don't include PowerShell 7 as it has default modules that don't follow this logic
- '\\WindowsPowerShell\\Modules\\*\.ps'
- '\\WindowsPowerShell\\Modules\\*\.dll'
condition: selection
falsepositives:
- False positive rate will vary depending on the environments. Additional filters might be required to make this logic usable in production.
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_powershell_module_susp_creation.yml