Analysis
- user interaction
yes - max time kernel
38s - max time network
53s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-es - resource tags
- submitted
11/11/2026, 03:37
General
- Target ProctorU.1.32.win.06V2.exe
- Size 13.4MB
- Sample261111-d6v4eaew8w
- SHA256 9ca08f9fe3fd94a0b66bce740dad4923fe7e3c39f7e1e3a8d7674c72f32c7f3a
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).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- 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 3 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.06V2.exe"C:\Users\Admin\AppData\Local\Temp\ProctorU.1.32.win.06V2.exe"1⤵
- Suspicious use of SetWindowsHookEx
-
C:\Users\Admin\AppData\Local\Temp\{0EA3997D-1153-454B-BE57-A0A82208B139}\wscl.exe"C:\Users\Admin\AppData\Local\Temp\{0EA3997D-1153-454B-BE57-A0A82208B139}\wscl.exe" fRqc9OgKefzSkRR3/ICDACTuh4ddO7mf3xNz+9nbUDfA5fxe1⤵
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
-
C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵
-
C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
wscl.exe
procorVex.zip
memory/5412-35-0x0000020AB1F80000-0x0000020AB1F81000-memory.dmp
memory/5412-33-0x0000020AB1F80000-0x0000020AB1F81000-memory.dmp
memory/5412-40-0x0000020AB1F80000-0x0000020AB1F81000-memory.dmp
memory/5412-39-0x0000020AB1F80000-0x0000020AB1F81000-memory.dmp
memory/5412-44-0x0000020AB1F80000-0x0000020AB1F81000-memory.dmp
memory/5412-41-0x0000020AB1F80000-0x0000020AB1F81000-memory.dmp
memory/5412-43-0x0000020AB1F80000-0x0000020AB1F81000-memory.dmp
memory/5412-42-0x0000020AB1F80000-0x0000020AB1F81000-memory.dmp