Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/08/2026, 17:18

General

  • Target
    2026-08-21_2be1d656470417641508870b20f1ec56_amadey_elex_njrat_redline-stealer_rhadamanthys_smoke-loader_stop_tofsee.exe
  • Size 10.6MB
  • Sample260822-vvnnmaxaqc
  • SHA256 cbf87a1b3235548f82dd7b826053f14c1823f95c22cd147315e0654cf509cb98
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • tofsee

C2
  • svartalfheim.top

  • 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.

  • 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\2026-08-21_2be1d656470417641508870b20f1ec56_amadey_elex_njrat_redline-stealer_rhadamanthys_smoke-loader_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-21_2be1d656470417641508870b20f1ec56_amadey_elex_njrat_redline-stealer_rhadamanthys_smoke-loader_stop_tofsee.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3392
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wfytlcov\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:5588
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vbtingx.exe" C:\Windows\SysWOW64\wfytlcov\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:5004
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create wfytlcov binPath= "C:\Windows\SysWOW64\wfytlcov\vbtingx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-08-21_2be1d656470417641508870b20f1ec56_amadey_elex_njrat_redline-stealer_rhadamanthys_smoke-loader_stop_tofsee.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3084
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description wfytlcov "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3844
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start wfytlcov
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3564
    • 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:5820
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3392 -s 1084
      2⤵
      • Program crash
      PID:460
  • C:\Windows\SysWOW64\wfytlcov\vbtingx.exe
    C:\Windows\SysWOW64\wfytlcov\vbtingx.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-08-21_2be1d656470417641508870b20f1ec56_amadey_elex_njrat_redline-stealer_rhadamanthys_smoke-loader_stop_tofsee.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3348
    • 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:52
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3348 -s 580
      2⤵
      • Program crash
      PID:688
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 3392 -ip 3392
    1⤵
      PID:4968
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 620 -p 3348 -ip 3348
      1⤵
        PID:5052

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            vbtingx.exe

            • Path C:\Users\Admin\AppData\Local\Temp\vbtingx.exe
            • Size 13.2MB
            • SHA256 69fedf5bbb0c370c3d6976907c9d381c7af77ed11850eff4a3d5ff90f4349a87
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/52-9-0x00000000001E0000-0x00000000001F5000-memory.dmp

            memory/52-11-0x00000000001E0000-0x00000000001F5000-memory.dmp

            memory/52-12-0x00000000001E0000-0x00000000001F5000-memory.dmp

            memory/3392-1-0x0000000002DE0000-0x0000000002EE0000-memory.dmp

            memory/3392-2-0x0000000004940000-0x0000000004953000-memory.dmp

            memory/3392-8-0x0000000004940000-0x0000000004953000-memory.dmp