Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    03/11/2026, 03:43

General

  • Target
    2026-11-02_9b534e8135bf1a53cad9f104cc5436fe_amadey_elex_smoke-loader.exe
  • Size 14.6MB
  • Sample261103-eab64ahs5r
  • SHA256 f3c135f97d72977c25388d945463600408020a4e6f7593c098074d0e6346c03d
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • tofsee

C2
  • quadoil.ru

  • lakeflex.ru

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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Creates new service(s) 2 TTPs
  • Deletes itself 1 TTPs 1 IoCs
  • Executes dropped EXE 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 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.

  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-11-02_9b534e8135bf1a53cad9f104cc5436fe_amadey_elex_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-11-02_9b534e8135bf1a53cad9f104cc5436fe_amadey_elex_smoke-loader.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4824
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dmtlzjjx\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:4228
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tzuxgppk.exe" C:\Windows\SysWOW64\dmtlzjjx\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:2848
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create dmtlzjjx binPath= "C:\Windows\SysWOW64\dmtlzjjx\tzuxgppk.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-11-02_9b534e8135bf1a53cad9f104cc5436fe_amadey_elex_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2056
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description dmtlzjjx "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3600
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start dmtlzjjx
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1796
    • 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:2320
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4824 -s 1200
      2⤵
      • Program crash
      PID:4076
  • C:\Windows\SysWOW64\dmtlzjjx\tzuxgppk.exe
    C:\Windows\SysWOW64\dmtlzjjx\tzuxgppk.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-11-02_9b534e8135bf1a53cad9f104cc5436fe_amadey_elex_smoke-loader.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1232
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:5084
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1232 -s 528
      2⤵
      • Program crash
      PID:4588
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4824 -ip 4824
    1⤵
      PID:2856
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1232 -ip 1232
      1⤵
        PID:2612

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            tzuxgppk.exe

            • Path C:\Users\Admin\AppData\Local\Temp\tzuxgppk.exe
            • Size 13.5MB
            • SHA256 4b5471a6b323416059f68113606e5f30b920d91b4cc79926436b030e3d67e62b
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/1232-14-0x0000000000400000-0x0000000002B4C000-memory.dmp

            memory/4824-1-0x0000000002CF0000-0x0000000002DF0000-memory.dmp

            memory/4824-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

            memory/4824-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

            memory/4824-7-0x0000000000400000-0x0000000002B4C000-memory.dmp

            memory/5084-10-0x00000000008D0000-0x00000000008E5000-memory.dmp

            memory/5084-12-0x00000000008D0000-0x00000000008E5000-memory.dmp

            memory/5084-13-0x00000000008D0000-0x00000000008E5000-memory.dmp