Phoenix Studio
Convert indexed Sigma rules into analyst-ready detections.
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Indexed Rules
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17
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CLI Versions
10
Newest: 2.0.2
Translation Workspace
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Active Rule
Invoke-Obfuscation COMPRESS OBFUSCATION - PowerShell Module
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Invoke-Obfuscation COMPRESS OBFUSCATION - PowerShell Module
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: Invoke-Obfuscation COMPRESS OBFUSCATION - PowerShell Module
id: 7034cbbb-cc55-4dc2-8dad-36c0b942e8f1
related:
- id: 20e5497e-331c-4cd5-8d36-935f6e2a9a07
type: derived
status: test
description: Detects Obfuscated Powershell via COMPRESS OBFUSCATION
references:
- https://github.com/SigmaHQ/sigma/issues/1009 # (Task 19)
author: Timur Zinniatullin, oscd.community
date: 2020-10-18
modified: 2022-11-29
tags:
- attack.defense-evasion
- attack.t1027
- attack.execution
- attack.t1059.001
logsource:
product: windows
category: ps_module
definition: 0ad03ef1-f21b-4a79-8ce8-e6900c54b65b
detection:
selection_4103:
Payload|contains|all:
- 'new-object'
- 'text.encoding]::ascii'
Payload|contains:
- 'system.io.compression.deflatestream'
- 'system.io.streamreader'
Payload|endswith: 'readtoend'
condition: selection_4103
falsepositives:
- Unknown
level: medium
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/windows/powershell/powershell_module/posh_pm_invoke_obfuscation_via_compress.yml