Resubmissions

02/11/2026, 17:50

261102-we39taxz7m10

02/11/2026, 17:46

261102-wcczvaby3110

Analysis

  • max time kernel
    149s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    02/11/2026, 17:46

General

  • Target
    2026-11-02_f8c867413f62b714033d275e0dde6983_amadey_elex_smoke-loader.exe
  • Size 12.2MB
  • Sample261102-wcczvaby31
  • SHA256 06d82a32600149c9cc6adef2cc375671dff57f527e3a0b2d23661d636cae8b9c
  • 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_f8c867413f62b714033d275e0dde6983_amadey_elex_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-11-02_f8c867413f62b714033d275e0dde6983_amadey_elex_smoke-loader.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4504
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jplgzery\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:1956
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tpeejqwn.exe" C:\Windows\SysWOW64\jplgzery\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:3724
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create jplgzery binPath= "C:\Windows\SysWOW64\jplgzery\tpeejqwn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-11-02_f8c867413f62b714033d275e0dde6983_amadey_elex_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1108
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description jplgzery "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3220
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start jplgzery
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4552
    • 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:2548
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4504 -s 888
      2⤵
      • Program crash
      PID:4028
  • C:\Windows\SysWOW64\jplgzery\tpeejqwn.exe
    C:\Windows\SysWOW64\jplgzery\tpeejqwn.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-11-02_f8c867413f62b714033d275e0dde6983_amadey_elex_smoke-loader.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3508
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:1772
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3508 -s 248
      2⤵
      • Program crash
      PID:1684
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4504 -ip 4504
    1⤵
      PID:3516
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3508 -ip 3508
      1⤵
        PID:4516

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            tpeejqwn.exe

            • Path C:\Users\Admin\AppData\Local\Temp\tpeejqwn.exe
            • Size 12.1MB
            • SHA256 3dd48e676b965f77e27a4946200761758bbbfe43aeb2dffb08bdd6e391cf15df
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/1772-10-0x0000000000B40000-0x0000000000B55000-memory.dmp

            memory/1772-12-0x0000000000B40000-0x0000000000B55000-memory.dmp

            memory/1772-14-0x0000000000B40000-0x0000000000B55000-memory.dmp

            memory/3508-13-0x0000000000400000-0x0000000001BFD000-memory.dmp

            memory/4504-2-0x0000000001D50000-0x0000000001D63000-memory.dmp

            memory/4504-1-0x0000000001E00000-0x0000000001F00000-memory.dmp

            memory/4504-8-0x0000000001D50000-0x0000000001D63000-memory.dmp

            memory/4504-7-0x0000000000400000-0x0000000001BFD000-memory.dmp