Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    05/09/2026, 03:40

General

  • Target
    2026-09-04_8f4695a05d2bc0826944281d681a954f_amadey_elex_rhadamanthys_smoke-loader_stop.exe
  • Size 14.5MB
  • Sample260905-d8pz6sbf92
  • SHA256 86db0f3aa4696b148f81b6432a101aa434406f76c7d13c190b0953ed8b71d567
  • 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.

  • 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 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\2026-09-04_8f4695a05d2bc0826944281d681a954f_amadey_elex_rhadamanthys_smoke-loader_stop.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-04_8f4695a05d2bc0826944281d681a954f_amadey_elex_rhadamanthys_smoke-loader_stop.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:644
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qewsamvi\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:2664
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dkbstwla.exe" C:\Windows\SysWOW64\qewsamvi\
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:4984
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create qewsamvi binPath= "C:\Windows\SysWOW64\qewsamvi\dkbstwla.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-09-04_8f4695a05d2bc0826944281d681a954f_amadey_elex_rhadamanthys_smoke-loader_stop.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1336
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description qewsamvi "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4300
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start qewsamvi
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1160
    • 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:860
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 644 -s 596
      2⤵
      • Program crash
      PID:4980
  • C:\Windows\SysWOW64\qewsamvi\dkbstwla.exe
    C:\Windows\SysWOW64\qewsamvi\dkbstwla.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-09-04_8f4695a05d2bc0826944281d681a954f_amadey_elex_rhadamanthys_smoke-loader_stop.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3472
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:4936
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3472 -s 524
      2⤵
      • Program crash
      PID:4172
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 644 -ip 644
    1⤵
      PID:2256
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 3472 -ip 3472
      1⤵
        PID:3948

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            dkbstwla.exe

            • Path C:\Users\Admin\AppData\Local\Temp\dkbstwla.exe
            • Size 12.5MB
            • SHA256 3b20f783925f9fae2d68b6e5a1a1c2453b19c32faf1bba16e6a2b8b5c6b0b047
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/644-1-0x0000000000890000-0x0000000000990000-memory.dmp

            memory/644-2-0x00000000007C0000-0x00000000007D3000-memory.dmp

            memory/644-7-0x00000000007C0000-0x00000000007D3000-memory.dmp

            memory/644-6-0x0000000000400000-0x000000000065A000-memory.dmp

            memory/3472-12-0x0000000000400000-0x000000000065A000-memory.dmp

            memory/4936-9-0x0000000000C40000-0x0000000000C55000-memory.dmp

            memory/4936-11-0x0000000000C40000-0x0000000000C55000-memory.dmp

            memory/4936-13-0x0000000000C40000-0x0000000000C55000-memory.dmp