Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    15/07/2026, 09:27

General

  • Target
    2026-07-15_bba2c06a284731c765360902112d45ff_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
  • Size 14.8MB
  • Sample260715-levbssb15s
  • SHA256 02216cafb13dba5d3b790c93efe21dd9aa002b2486ff5cf93edd0b1124644b70
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • tofsee

C2
  • vanaheim.cn

  • jotunheim.name

Signatures

  • Family: Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • Windows security bypass 2 TTPs 1 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 3 TTPs 1 IoCs

    This determines the executable launched when a service starts. It can be used to establish persistence.

  • Creates new service(s) 2 TTPs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Stops running service(s) 4 TTPs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Launches sc.exe 3 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies data under HKEY_USERS 7 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-07-15_bba2c06a284731c765360902112d45ff_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-15_bba2c06a284731c765360902112d45ff_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5128
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wmexqqsr\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:5576
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oeebnzpn.exe" C:\Windows\SysWOW64\wmexqqsr\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4600
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create wmexqqsr binPath= "C:\Windows\SysWOW64\wmexqqsr\oeebnzpn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-07-15_bba2c06a284731c765360902112d45ff_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4468
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description wmexqqsr "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1236
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start wmexqqsr
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:364
    • C:\Windows\SysWOW64\netsh.exe
      "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
      2⤵
      • Modifies Windows Firewall
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:4484
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5128 -s 1088
      2⤵
      • Program crash
      PID:5524
  • C:\Windows\SysWOW64\wmexqqsr\oeebnzpn.exe
    C:\Windows\SysWOW64\wmexqqsr\oeebnzpn.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-07-15_bba2c06a284731c765360902112d45ff_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:96
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Windows security bypass
      • Sets service image path in registry
      • Deletes itself
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      PID:5484
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 96 -s 592
      2⤵
      • Program crash
      PID:2472
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 96 -ip 96
    1⤵
      PID:5944
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 5128 -ip 5128
      1⤵
        PID:4612

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            oeebnzpn.exe

            • Path C:\Users\Admin\AppData\Local\Temp\oeebnzpn.exe
            • Size 13.8MB
            • SHA256 8a95cc6c6b566935d9274e92d5a79a56a1d2cb3678575d05fabf8e50c49207ad
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/96-13-0x0000000000400000-0x000000000229F000-memory.dmp

            memory/96-8-0x0000000000400000-0x000000000229F000-memory.dmp

            memory/5128-2-0x0000000002380000-0x0000000002480000-memory.dmp

            memory/5128-3-0x0000000004010000-0x0000000004023000-memory.dmp

            memory/5128-0-0x0000000000400000-0x000000000229F000-memory.dmp

            memory/5128-12-0x0000000004010000-0x0000000004023000-memory.dmp

            memory/5128-11-0x0000000000400000-0x000000000229F000-memory.dmp

            memory/5484-42-0x00000000024F0000-0x0000000002500000-memory.dmp

            memory/5484-37-0x00000000024F0000-0x0000000002500000-memory.dmp

            memory/5484-14-0x0000000000910000-0x0000000000925000-memory.dmp

            memory/5484-21-0x00000000024E0000-0x00000000024E6000-memory.dmp

            memory/5484-18-0x00000000036B0000-0x00000000038BF000-memory.dmp

            memory/5484-46-0x0000000002500000-0x0000000002505000-memory.dmp

            memory/5484-43-0x0000000002500000-0x0000000002505000-memory.dmp

            memory/5484-51-0x0000000008410000-0x0000000008417000-memory.dmp

            memory/5484-50-0x0000000007DC0000-0x00000000081CB000-memory.dmp

            memory/5484-47-0x0000000007DC0000-0x00000000081CB000-memory.dmp

            memory/5484-9-0x0000000000910000-0x0000000000925000-memory.dmp

            memory/5484-41-0x00000000024F0000-0x0000000002500000-memory.dmp

            memory/5484-40-0x00000000024F0000-0x0000000002500000-memory.dmp

            memory/5484-39-0x00000000024F0000-0x0000000002500000-memory.dmp

            memory/5484-38-0x00000000024F0000-0x0000000002500000-memory.dmp

            memory/5484-15-0x0000000000910000-0x0000000000925000-memory.dmp

            memory/5484-36-0x00000000024F0000-0x0000000002500000-memory.dmp

            memory/5484-35-0x00000000024F0000-0x0000000002500000-memory.dmp

            memory/5484-34-0x00000000024F0000-0x0000000002500000-memory.dmp

            memory/5484-33-0x00000000024F0000-0x0000000002500000-memory.dmp

            memory/5484-32-0x00000000024F0000-0x0000000002500000-memory.dmp

            memory/5484-31-0x00000000024F0000-0x0000000002500000-memory.dmp

            memory/5484-30-0x00000000024F0000-0x0000000002500000-memory.dmp

            memory/5484-29-0x00000000024F0000-0x0000000002500000-memory.dmp

            memory/5484-28-0x00000000024F0000-0x0000000002500000-memory.dmp

            memory/5484-27-0x00000000024F0000-0x0000000002500000-memory.dmp

            memory/5484-26-0x00000000024F0000-0x0000000002500000-memory.dmp

            memory/5484-23-0x00000000024F0000-0x0000000002500000-memory.dmp

            memory/5484-20-0x00000000036B0000-0x00000000038BF000-memory.dmp