Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    01/08/2026, 03:31

General

  • Target
    2026-08-01_340f10397166b20ccacfbe323703e76f_amadey_elex_glassworm_njrat_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
  • Size 14.2MB
  • Sample260801-d3e8sada28
  • SHA256 407f7632234892b8f50a22432a6b97e60071c0b58a41c61f073dfa435cce5115
  • 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
  • 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.

  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-01_340f10397166b20ccacfbe323703e76f_amadey_elex_glassworm_njrat_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-01_340f10397166b20ccacfbe323703e76f_amadey_elex_glassworm_njrat_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:6044
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pbiavhdl\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:3960
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kwmznmei.exe" C:\Windows\SysWOW64\pbiavhdl\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:3312
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create pbiavhdl binPath= "C:\Windows\SysWOW64\pbiavhdl\kwmznmei.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-08-01_340f10397166b20ccacfbe323703e76f_amadey_elex_glassworm_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:4880
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description pbiavhdl "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1456
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start pbiavhdl
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3288
    • 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:5552
  • C:\Windows\SysWOW64\pbiavhdl\kwmznmei.exe
    C:\Windows\SysWOW64\pbiavhdl\kwmznmei.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-08-01_340f10397166b20ccacfbe323703e76f_amadey_elex_glassworm_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:4532
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Windows security bypass
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:988

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        kwmznmei.exe

        • Path C:\Users\Admin\AppData\Local\Temp\kwmznmei.exe
        • Size 14.5MB
        • SHA256 284032b3a2e69560c4dbfbfadb842a56f1193d1d4be3477249dc85ec7bcf8a84
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/988-7-0x0000000000A00000-0x0000000000A15000-memory.dmp

        memory/988-12-0x0000000000A00000-0x0000000000A15000-memory.dmp

        memory/988-13-0x0000000000A00000-0x0000000000A15000-memory.dmp

        memory/6044-2-0x00000000040C0000-0x00000000040D3000-memory.dmp

        memory/6044-1-0x00000000025A0000-0x00000000026A0000-memory.dmp

        memory/6044-11-0x00000000040C0000-0x00000000040D3000-memory.dmp