Analysis

  • max time kernel
    149s
  • 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
    10/07/2026, 02:02

General

  • Target
    2026-07-10_d5fac8193dc3e55d7d5c091a23b77b7d_elex_gcleaner_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
  • Size 243KB
  • Sample260710-cf9nfac13z
  • SHA256 cd029017259c426333887e718cf3405a74a2187058ee3238f342be04247bf940
  • 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
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 2 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.

  • Program crash 1 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.

  • Modifies data under HKEY_USERS 6 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-07-10_d5fac8193dc3e55d7d5c091a23b77b7d_elex_gcleaner_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-10_d5fac8193dc3e55d7d5c091a23b77b7d_elex_gcleaner_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1784
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\akqnkert\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:6020
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oamrouth.exe" C:\Windows\SysWOW64\akqnkert\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:5820
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create akqnkert binPath= "C:\Windows\SysWOW64\akqnkert\oamrouth.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-07-10_d5fac8193dc3e55d7d5c091a23b77b7d_elex_gcleaner_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:5808
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description akqnkert "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2308
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start akqnkert
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:6064
    • 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:4520
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1784 -s 1228
      2⤵
      • Program crash
      PID:4212
  • C:\Windows\SysWOW64\akqnkert\oamrouth.exe
    C:\Windows\SysWOW64\akqnkert\oamrouth.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-07-10_d5fac8193dc3e55d7d5c091a23b77b7d_elex_gcleaner_rhadamanthys_smoke-loader_stealc_stop_tofsee.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1264
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Windows security bypass
      • Sets service image path in registry
      • Deletes itself
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      PID:2036
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1784 -ip 1784
    1⤵
      PID:1880
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k GPSvcGroup
      1⤵
        PID:1744

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            oamrouth.exe

            • Path C:\Users\Admin\AppData\Local\Temp\oamrouth.exe
            • Size 13.2MB
            • SHA256 5d0147bf00113f86e51fc05eacfe9b641286f3074f940979b9b09e613afbe858
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/1264-10-0x0000000000400000-0x0000000002085000-memory.dmp

            memory/1784-1-0x0000000002320000-0x0000000002420000-memory.dmp

            memory/1784-7-0x0000000003E30000-0x0000000003E43000-memory.dmp

            memory/1784-6-0x0000000000400000-0x0000000002085000-memory.dmp

            memory/1784-2-0x0000000003E30000-0x0000000003E43000-memory.dmp

            memory/2036-44-0x0000000001A10000-0x0000000001A15000-memory.dmp

            memory/2036-36-0x0000000001A00000-0x0000000001A10000-memory.dmp

            memory/2036-12-0x0000000001100000-0x0000000001115000-memory.dmp

            memory/2036-15-0x0000000003BA0000-0x0000000003DAF000-memory.dmp

            memory/2036-29-0x0000000001A00000-0x0000000001A10000-memory.dmp

            memory/2036-38-0x0000000001A00000-0x0000000001A10000-memory.dmp

            memory/2036-18-0x0000000003BA0000-0x0000000003DAF000-memory.dmp

            memory/2036-45-0x0000000008260000-0x000000000866B000-memory.dmp

            memory/2036-48-0x0000000008260000-0x000000000866B000-memory.dmp

            memory/2036-49-0x0000000001A50000-0x0000000001A57000-memory.dmp

            memory/2036-9-0x0000000001100000-0x0000000001115000-memory.dmp

            memory/2036-41-0x0000000001A10000-0x0000000001A15000-memory.dmp

            memory/2036-40-0x0000000001A00000-0x0000000001A10000-memory.dmp

            memory/2036-39-0x0000000001A00000-0x0000000001A10000-memory.dmp

            memory/2036-37-0x0000000001A00000-0x0000000001A10000-memory.dmp

            memory/2036-13-0x0000000001100000-0x0000000001115000-memory.dmp

            memory/2036-35-0x0000000001A00000-0x0000000001A10000-memory.dmp

            memory/2036-34-0x0000000001A00000-0x0000000001A10000-memory.dmp

            memory/2036-33-0x0000000001A00000-0x0000000001A10000-memory.dmp

            memory/2036-32-0x0000000001A00000-0x0000000001A10000-memory.dmp

            memory/2036-31-0x0000000001A00000-0x0000000001A10000-memory.dmp

            memory/2036-30-0x0000000001A00000-0x0000000001A10000-memory.dmp

            memory/2036-28-0x0000000001A00000-0x0000000001A10000-memory.dmp

            memory/2036-27-0x0000000001A00000-0x0000000001A10000-memory.dmp

            memory/2036-26-0x0000000001A00000-0x0000000001A10000-memory.dmp

            memory/2036-25-0x0000000001A00000-0x0000000001A10000-memory.dmp

            memory/2036-24-0x0000000001A00000-0x0000000001A10000-memory.dmp

            memory/2036-21-0x0000000001A00000-0x0000000001A10000-memory.dmp

            memory/2036-19-0x0000000001350000-0x0000000001356000-memory.dmp