Analysis

  • max time kernel
    150s
  • 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
    28/08/2026, 15:01

General

  • Target
    d3d04d8e3b15cf7ed857270a1740b8a0c88996d34b902a0640c0841edcc8a8b9.exe
  • Size 142KB
  • Sample260828-sd87wsbk8s
  • SHA256 d3d04d8e3b15cf7ed857270a1740b8a0c88996d34b902a0640c0841edcc8a8b9
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Sfone

    Sfone is a worm written in C++.

  • Detects Sfone worm 2 IoCs
  • Checks computer location settings 2 TTPs 4 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 12 IoCs
  • Drops file in Program Files directory 17 IoCs
  • Drops file in Windows directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d3d04d8e3b15cf7ed857270a1740b8a0c88996d34b902a0640c0841edcc8a8b9.exe
    "C:\Users\Admin\AppData\Local\Temp\d3d04d8e3b15cf7ed857270a1740b8a0c88996d34b902a0640c0841edcc8a8b9.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2940
    • C:\Users\Admin\AppData\Local\Temp\d3d04d8e3b15cf7ed857270a1740b8a0c88996d34b902a0640c0841edcc8a8b9.exe
      "C:\Users\Admin\AppData\Local\Temp\d3d04d8e3b15cf7ed857270a1740b8a0c88996d34b902a0640c0841edcc8a8b9.exe"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3984
      • C:\Users\Admin\AppData\Local\Temp\d3d04d8e3b15cf7ed857270a1740b8a0c88996d34b902a0640c0841edcc8a8b9.exe
        "C:\Users\Admin\AppData\Local\Temp\d3d04d8e3b15cf7ed857270a1740b8a0c88996d34b902a0640c0841edcc8a8b9.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:4264
    • C:\Users\Admin\AppData\Local\Temp\d3d04d8e3b15cf7ed857270a1740b8a0c88996d34b902a0640c0841edcc8a8b9.exe
      "C:\Users\Admin\AppData\Local\Temp\d3d04d8e3b15cf7ed857270a1740b8a0c88996d34b902a0640c0841edcc8a8b9.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:3916
  • C:\Windows\mssrv.exe
    C:\Windows\mssrv.exe
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1396
    • C:\Windows\mssrv.exe
      "C:\Windows\mssrv.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3796
      • C:\Windows\mssrv.exe
        "C:\Windows\mssrv.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        PID:1848

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        fucking masturbation .mpeg.exe

        • Path C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\fucking masturbation .mpeg.exe
        • Size 145KB
        • SHA256 689e0098bf0e1831f6a5f59f07db75e8ecc9294d69809cd10820b2fa5b2a9030
        • MD5 SHA1 SHA512 SSDEEP TLSH

        mssrv.exe

        • Path C:\Windows\mssrv.exe
        • Size 1.9MB
        • SHA256 90e85e5796b2577b4c86e9f4f2ee4bc9f98b9167b8e8b76df05e40c09b79c8c0
        • MD5 SHA1 SHA512 SSDEEP TLSH