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
Potential PowerShell Obfuscation Using Character Join
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Potential PowerShell Obfuscation Using Character Join
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 PowerShell Obfuscation Using Character Join
id: e8314f79-564d-4f79-bc13-fbc0bf2660d8
related:
- id: 96cd126d-f970-49c4-848a-da3a09f55c55
type: derived
status: test
description: Detects specific techniques often seen used inside of PowerShell scripts to obfscuate Alias creation
references:
- Internal Research
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-01-09
tags:
- attack.defense-evasion
- attack.execution
- attack.t1027
- attack.t1059.001
logsource:
product: windows
category: ps_script
definition: 'Requirements: Script Block Logging must be enabled'
detection:
selection:
# Example:
# Set-Alias -Name Y -Value (-join("Ne","w-O","bje","ct"))
# Set-Alias -Name X -Value (-join("Inv","oke","-","Exp","ression"))
ScriptBlockText|contains|all:
- '-Alias' # For both "New-Alias" and "Set-Alias"
- ' -Value (-join('
condition: 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/windows/powershell/powershell_script/posh_ps_susp_alias_obfscuation.yml