Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    18/08/2026, 05:11

General

  • Target
    2026-08-18_206e0fbf0ff2529ae678f6d723dca5f9_amadey_elex_njrat_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
  • Size 12.0MB
  • Sample260818-ft93xaem91
  • SHA256 f8bb602cd4f981b2cf69988480592f9cfef1b822873aaa40e9602ea9c12b8427
  • 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
  • Looks up external IP address via web service 1 TTPs 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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.

  • Executes a command shell one-liner 1 TTPs 2 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • 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\2026-08-18_206e0fbf0ff2529ae678f6d723dca5f9_amadey_elex_njrat_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-18_206e0fbf0ff2529ae678f6d723dca5f9_amadey_elex_njrat_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4460
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rulszgq\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:5924
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zcvggpqq.exe" C:\Windows\SysWOW64\rulszgq\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:2780
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create rulszgq binPath= "C:\Windows\SysWOW64\rulszgq\zcvggpqq.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-08-18_206e0fbf0ff2529ae678f6d723dca5f9_amadey_elex_njrat_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:4396
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description rulszgq "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4120
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start rulszgq
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4772
    • 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:5396
  • C:\Windows\SysWOW64\rulszgq\zcvggpqq.exe
    C:\Windows\SysWOW64\rulszgq\zcvggpqq.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-08-18_206e0fbf0ff2529ae678f6d723dca5f9_amadey_elex_njrat_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:364
    • 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:1084

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        zcvggpqq.exe

        • Path C:\Users\Admin\AppData\Local\Temp\zcvggpqq.exe
        • Size 12.3MB
        • SHA256 accf8a13a4ac83bd4d64cacb634f621e030d622864a67f2b9deab6028ee15666
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1084-44-0x0000000001D30000-0x0000000001D35000-memory.dmp

        memory/1084-39-0x0000000001D20000-0x0000000001D30000-memory.dmp

        memory/1084-7-0x0000000001210000-0x0000000001225000-memory.dmp

        memory/1084-24-0x0000000001D20000-0x0000000001D30000-memory.dmp

        memory/1084-12-0x0000000001210000-0x0000000001225000-memory.dmp

        memory/1084-13-0x0000000001210000-0x0000000001225000-memory.dmp

        memory/1084-21-0x0000000001D20000-0x0000000001D30000-memory.dmp

        memory/1084-42-0x0000000001D30000-0x0000000001D35000-memory.dmp

        memory/1084-40-0x0000000001D20000-0x0000000001D30000-memory.dmp

        memory/1084-15-0x0000000003DB0000-0x0000000003FBF000-memory.dmp

        memory/1084-19-0x0000000001B80000-0x0000000001B86000-memory.dmp

        memory/1084-18-0x0000000003DB0000-0x0000000003FBF000-memory.dmp

        memory/1084-48-0x00000000085B0000-0x00000000089BB000-memory.dmp

        memory/1084-49-0x0000000001FF0000-0x0000000001FF7000-memory.dmp

        memory/1084-25-0x0000000001D20000-0x0000000001D30000-memory.dmp

        memory/1084-45-0x00000000085B0000-0x00000000089BB000-memory.dmp

        memory/1084-28-0x0000000001D20000-0x0000000001D30000-memory.dmp

        memory/1084-26-0x0000000001D20000-0x0000000001D30000-memory.dmp

        memory/1084-38-0x0000000001D20000-0x0000000001D30000-memory.dmp

        memory/1084-37-0x0000000001D20000-0x0000000001D30000-memory.dmp

        memory/1084-36-0x0000000001D20000-0x0000000001D30000-memory.dmp

        memory/1084-35-0x0000000001D20000-0x0000000001D30000-memory.dmp

        memory/1084-34-0x0000000001D20000-0x0000000001D30000-memory.dmp

        memory/1084-33-0x0000000001D20000-0x0000000001D30000-memory.dmp

        memory/1084-32-0x0000000001D20000-0x0000000001D30000-memory.dmp

        memory/1084-31-0x0000000001D20000-0x0000000001D30000-memory.dmp

        memory/1084-30-0x0000000001D20000-0x0000000001D30000-memory.dmp

        memory/1084-29-0x0000000001D20000-0x0000000001D30000-memory.dmp

        memory/1084-27-0x0000000001D20000-0x0000000001D30000-memory.dmp

        memory/4460-2-0x0000000004090000-0x00000000040A3000-memory.dmp

        memory/4460-1-0x0000000002570000-0x0000000002670000-memory.dmp

        memory/4460-11-0x0000000004090000-0x00000000040A3000-memory.dmp