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Indexed Rules
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17
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CLI Versions
10
Newest: 2.0.2
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Active Rule
Potential PowerShell Execution Via DLL
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Potential PowerShell Execution Via DLL
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 Execution Via DLL
id: 6812a10b-60ea-420c-832f-dfcc33b646ba
status: test
description: |
Detects potential PowerShell execution from a DLL instead of the usual PowerShell process as seen used in PowerShdll.
This detection assumes that PowerShell commands are passed via the CommandLine.
references:
- https://github.com/p3nt4/PowerShdll/blob/62cfa172fb4e1f7f4ac00ca942685baeb88ff356/README.md
author: Markus Neis, Nasreddine Bencherchali (Nextron Systems)
date: 2018-08-25
modified: 2024-03-07
tags:
- attack.defense-evasion
- attack.t1218.011
logsource:
category: process_creation
product: windows
detection:
selection_img:
- Image|endswith:
- '\InstallUtil.exe'
- '\RegAsm.exe'
- '\RegSvcs.exe'
- '\regsvr32.exe'
- '\rundll32.exe'
- OriginalFileName:
- 'InstallUtil.exe'
- 'RegAsm.exe'
- 'RegSvcs.exe'
- 'REGSVR32.EXE'
- 'RUNDLL32.EXE'
selection_cli:
CommandLine|contains:
- 'Default.GetString'
- 'DownloadString'
- 'FromBase64String'
- 'ICM '
- 'IEX '
- 'Invoke-Command'
- 'Invoke-Expression'
condition: all of selection_*
falsepositives:
- Unknown
level: high
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/windows/process_creation/proc_creation_win_susp_powershell_execution_via_dll.yml