.. /UtilityFunctions.ps1
Star

Execute (DLL (.NET))

PowerShell Diagnostic Script

Paths:

C:\Windows\diagnostics\system\Networking\UtilityFunctions.ps1

Resources:

https://twitter.com/nickvangilder/status/1441003666274668546

Acknowledgements:

Nick VanGilder (@nickvangilder)

Detections:

Sigma: https://github.com/SigmaHQ/sigma/blob/0.21-688-gd172b136b/rules/windows/process_creation/proc_creation_win_lolbas_utilityfunctions.yml

Execute

Proxy execute Managed DLL with PowerShell
```
powershell.exe -ep bypass -command "set-location -path c:\windows\diagnostics\system\networking; import-module .\UtilityFunctions.ps1; RegSnapin ..\..\..\..\temp\unsigned.dll;[Program.Class]::Main()"
```
Use case
Execute proxied payload with Microsoft signed binary

Privileges required
User

Operating systems
Windows 10 21H1 (likely other versions as well), Windows 11

ATT&CK® technique
T1216
Tags
Execute: DLL (.NET)