Analysis

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

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    06/11/2026, 11:17

General

  • Target
    a6e02549d9135f1a447904a86b0c85be78d15194b590ca551fae875118b3b584.exe
  • Size 12.7MB
  • Sample261106-nd3ynact5l
  • SHA256 a6e02549d9135f1a447904a86b0c85be78d15194b590ca551fae875118b3b584
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • tofsee

C2
  • 43.231.4.7

  • lazystax.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.

  • 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\a6e02549d9135f1a447904a86b0c85be78d15194b590ca551fae875118b3b584.exe
    "C:\Users\Admin\AppData\Local\Temp\a6e02549d9135f1a447904a86b0c85be78d15194b590ca551fae875118b3b584.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3648
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sqcjqagj\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:4280
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kxjgzmrb.exe" C:\Windows\SysWOW64\sqcjqagj\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:2720
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create sqcjqagj binPath= "C:\Windows\SysWOW64\sqcjqagj\kxjgzmrb.exe /d\"C:\Users\Admin\AppData\Local\Temp\a6e02549d9135f1a447904a86b0c85be78d15194b590ca551fae875118b3b584.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3328
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description sqcjqagj "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4028
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start sqcjqagj
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3700
    • 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:3344
  • C:\Windows\SysWOW64\sqcjqagj\kxjgzmrb.exe
    C:\Windows\SysWOW64\sqcjqagj\kxjgzmrb.exe /d"C:\Users\Admin\AppData\Local\Temp\a6e02549d9135f1a447904a86b0c85be78d15194b590ca551fae875118b3b584.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5236
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:5244

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        kxjgzmrb.exe

        • Path C:\Users\Admin\AppData\Local\Temp\kxjgzmrb.exe
        • Size 12.9MB
        • SHA256 71bc4f5b36218bf3f1f8cc20b967e32f40db13ebe092e12a86f74d6b95a43660
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/5244-7-0x0000000000510000-0x0000000000525000-memory.dmp

        memory/5244-4-0x0000000000510000-0x0000000000525000-memory.dmp

        memory/5244-8-0x0000000000510000-0x0000000000525000-memory.dmp

        memory/5244-9-0x0000000000510000-0x0000000000525000-memory.dmp

        memory/5244-10-0x0000000000510000-0x0000000000525000-memory.dmp