Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260630-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260630-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/07/2026, 16:16

General

  • Target
    2026-07-02_e4fd7e27fb50048dabc51a5f0aadffa9_amadey_elex_manuscrypt_rhadamanthys_smoke-loader_stop_tofsee.exe
  • Size 10.8MB
  • Sample260702-tqrdaaew3q
  • SHA256 3319ceb6345c371b79b7a6eeee7b6a90ddd343fa02106cd88501fdd48acb5e7e
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • tofsee

C2
  • vanaheim.cn

  • 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\2026-07-02_e4fd7e27fb50048dabc51a5f0aadffa9_amadey_elex_manuscrypt_rhadamanthys_smoke-loader_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-02_e4fd7e27fb50048dabc51a5f0aadffa9_amadey_elex_manuscrypt_rhadamanthys_smoke-loader_stop_tofsee.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4716
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\erhmqwpv\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4896
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lxnaonfj.exe" C:\Windows\SysWOW64\erhmqwpv\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3628
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create erhmqwpv binPath= "C:\Windows\SysWOW64\erhmqwpv\lxnaonfj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-07-02_e4fd7e27fb50048dabc51a5f0aadffa9_amadey_elex_manuscrypt_rhadamanthys_smoke-loader_stop_tofsee.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:5048
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description erhmqwpv "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1536
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start erhmqwpv
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:5076
    • 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:2120
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4716 -s 1252
      2⤵
      • Program crash
      PID:6072
  • C:\Windows\SysWOW64\erhmqwpv\lxnaonfj.exe
    C:\Windows\SysWOW64\erhmqwpv\lxnaonfj.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-07-02_e4fd7e27fb50048dabc51a5f0aadffa9_amadey_elex_manuscrypt_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:1980
    • 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:1240
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1980 -s 588
      2⤵
      • Program crash
      PID:5416
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4716 -ip 4716
    1⤵
      PID:1936
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1980 -ip 1980
      1⤵
        PID:5320

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            lxnaonfj.exe

            • Path C:\Users\Admin\AppData\Local\Temp\lxnaonfj.exe
            • Size 11.7MB
            • SHA256 4e269fa3f40d1230b9859fdad29f24ee9fb37f699ac24f0156ff3bd67c3ac587
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/1240-12-0x0000000000640000-0x0000000000655000-memory.dmp

            memory/1240-10-0x0000000000640000-0x0000000000655000-memory.dmp

            memory/1240-13-0x0000000000640000-0x0000000000655000-memory.dmp

            memory/1980-9-0x0000000000AD0000-0x0000000000BD0000-memory.dmp

            memory/4716-1-0x0000000000930000-0x0000000000A30000-memory.dmp

            memory/4716-2-0x00000000008B0000-0x00000000008C3000-memory.dmp

            memory/4716-7-0x00000000008B0000-0x00000000008C3000-memory.dmp