Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    07/07/2026, 03:11

General

  • Target
    2026-07-06_6b8f0becde5271faa80f63a49f502387_amadey_dharma_elex_remcos_smoke-loader_stop.exe
  • Size 11.5MB
  • Sample260707-dp4dfsgx5v
  • SHA256 c0a593281c3c7d4ebb6aa5cf15e12c5333f7d63373a38d861f98389ecd929446
  • 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.

  • 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\2026-07-06_6b8f0becde5271faa80f63a49f502387_amadey_dharma_elex_remcos_smoke-loader_stop.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-06_6b8f0becde5271faa80f63a49f502387_amadey_dharma_elex_remcos_smoke-loader_stop.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3124
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tvppojxn\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:5160
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\aiakzksn.exe" C:\Windows\SysWOW64\tvppojxn\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3956
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create tvppojxn binPath= "C:\Windows\SysWOW64\tvppojxn\aiakzksn.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-07-06_6b8f0becde5271faa80f63a49f502387_amadey_dharma_elex_remcos_smoke-loader_stop.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4256
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description tvppojxn "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2424
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start tvppojxn
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2460
    • 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:4840
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3124 -s 1088
      2⤵
      • Program crash
      PID:5904
  • C:\Windows\SysWOW64\tvppojxn\aiakzksn.exe
    C:\Windows\SysWOW64\tvppojxn\aiakzksn.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-07-06_6b8f0becde5271faa80f63a49f502387_amadey_dharma_elex_remcos_smoke-loader_stop.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:6072
    • 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:4160
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 6072 -s 588
      2⤵
      • Program crash
      PID:1416
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3124 -ip 3124
    1⤵
      PID:4596
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 6072 -ip 6072
      1⤵
        PID:5336

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            aiakzksn.exe

            • Path C:\Users\Admin\AppData\Local\Temp\aiakzksn.exe
            • Size 11.3MB
            • SHA256 f96eb195560ac5c23662103ddfcf3a73c45482a28b71a10c7c656311baacb02f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/3124-1-0x0000000000C40000-0x0000000000D40000-memory.dmp

            memory/3124-2-0x00000000028A0000-0x00000000028B3000-memory.dmp

            memory/3124-11-0x00000000028A0000-0x00000000028B3000-memory.dmp

            memory/3124-10-0x0000000000400000-0x0000000000B3B000-memory.dmp

            memory/4160-8-0x0000000000E10000-0x0000000000E25000-memory.dmp

            memory/4160-13-0x0000000000E10000-0x0000000000E25000-memory.dmp

            memory/4160-14-0x0000000000E10000-0x0000000000E25000-memory.dmp

            memory/6072-7-0x0000000000CB0000-0x0000000000DB0000-memory.dmp

            memory/6072-12-0x0000000000400000-0x0000000000B3B000-memory.dmp