.. /WorkFolders.exe
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Execute (EXE, Rename, Registry change)

Work Folders

Paths:

C:\Windows\System32\WorkFolders.exe

Resources:

Acknowledgements:

John Carroll (@YoSignals)
Elliot Killick (@elliotkillick)
Naor Evgi (@ghosts621)

Detections:

Sigma: https://github.com/SigmaHQ/sigma/blob/683b63f8184b93c9564c4310d10c571cbe367e1e/rules/windows/process_creation/proc_creation_win_susp_workfolders.yml
IOC: WorkFolders.exe should not be run on a normal workstation
IOC: Registry modification to HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\control.exe

Execute

Execute control.exe in the current working directory
```
WorkFolders
```
Use case
Can be used to evade defensive countermeasures or to hide as a persistence mechanism

Privileges required
User

Operating systems
Windows 8, Windows 8.1, Windows 10, Windows 11

ATT&CK® technique
T1218
Tags
Execute: EXE
Requires: Rename
WorkFolders attempts to execute control.exe. By modifying the default value of the App Paths registry key for control.exe in HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\control.exe, an attacker can achieve proxy execution.
```
WorkFolders
```
Use case
Proxy execution of a malicious payload via App Paths registry hijacking.

Privileges required
User

Operating systems
Windows 10, Windows 11

ATT&CK® technique
T1218
Tags
Execute: EXE
Requires: Registry change