Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    08/11/2026, 06:32

General

  • Target
    2026-11-07_ca83e1c9207e7d86f004473f2722b4ec_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
  • Size 12.3MB
  • Sample261108-har44ahd89
  • SHA256 44d19b1afa7c625d8bcafaebeeaa1db105ab02850b2290c97a5fef59a33240b9
  • 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.

  • 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 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Stops running service(s) 4 TTPs
  • Windows security bypass 2 TTPs 1 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.

  • Program crash 6 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.

  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-11-07_ca83e1c9207e7d86f004473f2722b4ec_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-11-07_ca83e1c9207e7d86f004473f2722b4ec_amadey_elex_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3576
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lzpoptjc\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:2652
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nqngxztj.exe" C:\Windows\SysWOW64\lzpoptjc\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:1104
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create lzpoptjc binPath= "C:\Windows\SysWOW64\lzpoptjc\nqngxztj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-11-07_ca83e1c9207e7d86f004473f2722b4ec_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:1060
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description lzpoptjc "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1132
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start lzpoptjc
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4588
    • 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:4356
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3576 -s 668
      2⤵
      • Program crash
      PID:1584
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3576 -s 944
      2⤵
      • Program crash
      PID:1000
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3576 -s 788
      2⤵
      • Program crash
      PID:4132
  • C:\Windows\SysWOW64\lzpoptjc\nqngxztj.exe
    C:\Windows\SysWOW64\lzpoptjc\nqngxztj.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-11-07_ca83e1c9207e7d86f004473f2722b4ec_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:2848
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • Windows security bypass
      • System Location Discovery: System Language Discovery
      PID:1496
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2848 -s 576
      2⤵
      • Program crash
      PID:2356
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2848 -s 616
      2⤵
      • Program crash
      PID:2856
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2848 -s 620
      2⤵
      • Program crash
      PID:2872
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2848 -ip 2848
    1⤵
      PID:4668
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3576 -ip 3576
      1⤵
        PID:4936
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2848 -ip 2848
        1⤵
          PID:2868
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3576 -ip 3576
          1⤵
            PID:124
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 596 -p 2848 -ip 2848
            1⤵
              PID:2448
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 3576 -ip 3576
              1⤵
                PID:5848

              Network

                    MITRE ATT&CK Enterprise v16

                    Replay Monitor

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                    Downloads

                    nqngxztj.exe

                    • Path C:\Users\Admin\AppData\Local\Temp\nqngxztj.exe
                    • Size 14.4MB
                    • SHA256 111e71dba0e3347620f62e7d8ce9a8523be242d0b8e13c2da478295fb74fd0ad
                    • MD5 SHA1 SHA512 SSDEEP TLSH

                    memory/1496-8-0x00000000006E0000-0x00000000006F5000-memory.dmp

                    memory/1496-13-0x00000000006E0000-0x00000000006F5000-memory.dmp

                    memory/1496-14-0x00000000006E0000-0x00000000006F5000-memory.dmp

                    memory/2848-10-0x0000000000400000-0x0000000001F14000-memory.dmp

                    memory/3576-1-0x0000000002250000-0x0000000002350000-memory.dmp

                    memory/3576-2-0x0000000002200000-0x0000000002213000-memory.dmp

                    memory/3576-12-0x0000000002200000-0x0000000002213000-memory.dmp

                    memory/3576-11-0x0000000000400000-0x0000000001F14000-memory.dmp