Analysis
- max time kernel
122s - max time network
118s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-es - resource tags
- submitted
11/11/2026, 03:42
General
- Target ProctorU.1.32.win.08.exe
- Size 9.8MB
- Sample261111-d9geesew9v
- SHA256 2358266014965da1fbcab4fff34a4d7c0d57e6582408ba48cc42c002f7370e2e
Score
10/10
Malware Config
Signatures
- Family: ArkTunnel
ArkTunnel is a Windows proxy implant that tunnels connections over a WebSocket C2, written in C.
- Detects ArkTunnel WebSocket proxy implant 1 IoCs
- Executes dropped EXE 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of SetWindowsHookEx 2 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
- Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
- Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
-
C:\Users\Admin\AppData\Local\Temp\ProctorU.1.32.win.08.exe"C:\Users\Admin\AppData\Local\Temp\ProctorU.1.32.win.08.exe"1⤵
- Suspicious use of SetWindowsHookEx
-
C:\Users\Admin\AppData\Local\Temp\{71425D20-720A-4B81-9FF2-569EC5644740}\msvc.exe"C:\Users\Admin\AppData\Local\Temp\{71425D20-720A-4B81-9FF2-569EC5644740}\msvc.exe" hXVaiUHyFjqvOOwYOv0q+Eso+i6lVH/iduscPaRyqFgGmFum1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
msvc.exe
prebionics.zip