Analysis

  • max time kernel
    300s
  • max time network
    294s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    15/08/2026, 16:07

General

  • Target
    20260813085418.exe
  • Size 1.1MB
  • Sample260815-tk1prszbrg
  • SHA256 1180c0180e9e175ec90378f68c1cf0eb177beb9b66d202eda966fe8a8ef9d1f6
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Enumerates connected drives 3 TTPs 22 IoCs

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

  • Looks up external IP address via web service 1 TTPs 2 IoCs

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

  • Discovers running processes 1 TTPs 6 IoCs

    Running process information can be used to identify security tools or plan follow-on actions.

  • Executes a command shell one-liner 1 TTPs 5 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • System Location Discovery: System Language Discovery 1 TTPs 29 IoCs

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

  • Delays execution with timeout.exe 6 IoCs
  • Kills process with taskkill 2 IoCs
  • Modifies registry class 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20260813085418.exe
    "C:\Users\Admin\AppData\Local\Temp\20260813085418.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4428
    • C:\Windows\SysWOW64\cmd.exe
      /c C:\Windows\System32\ComputerDefaults.exe
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4392
      • C:\Windows\SysWOW64\ComputerDefaults.exe
        C:\Windows\System32\ComputerDefaults.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1500
        • C:\ProgramData\VirtualAudio.Driver.{1A41C62A-B587-40C0-A1BF-CC36F4C9874C}\nvvad.nvi.exe\GFExperience.nvi.EXE
          "GFExperience.nvi.EXE"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Enumerates connected drives
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4852
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /f /im cmd.exe
            5⤵
            • System Location Discovery: System Language Discovery
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:5008
          • C:\Windows\SysWOW64\cmd.exe
            cmd.exe /c start "" /B cmd /C C:\Users\Admin\AppData\Local\Temp\BC2411DEE9DC.CMD
            5⤵
            • Executes a command shell one-liner
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:996
            • C:\Windows\SysWOW64\cmd.exe
              cmd /C C:\Users\Admin\AppData\Local\Temp\BC2411DEE9DC.CMD
              6⤵
              • Executes a command shell one-liner
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:5516
              • C:\Windows\SysWOW64\tasklist.exe
                TASKLIST /FI "IMAGENAME eq GFExperience.nvi.EXE" /FO CSV
                7⤵
                • Discovers running processes
                • System Location Discovery: System Language Discovery
                • Suspicious use of AdjustPrivilegeToken
                PID:4788
              • C:\Windows\SysWOW64\find.exe
                FIND /I "GFExperience.nvi.EXE"
                7⤵
                • System Location Discovery: System Language Discovery
                PID:2216
              • C:\Windows\SysWOW64\timeout.exe
                TIMEOUT /t 60 /nobreak
                7⤵
                • System Location Discovery: System Language Discovery
                • Delays execution with timeout.exe
                PID:4868
  • C:\ProgramData\VirtualAudio.Driver.{1A41C62A-B587-40C0-A1BF-CC36F4C9874C}\nvvad.nvi.exe\GFExperience.nvi.EXE
    C:\ProgramData\VirtualAudio.Driver.{1A41C62A-B587-40C0-A1BF-CC36F4C9874C}\nvvad.nvi.exe\GFExperience.nvi.EXE
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:252
    • C:\Windows\SysWOW64\taskkill.exe
      taskkill /f /im cmd.exe
      2⤵
      • System Location Discovery: System Language Discovery
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:5880
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c start "" /B cmd /C C:\Users\Admin\AppData\Local\Temp\BC2411DEE9DC.CMD
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5764
      • C:\Windows\SysWOW64\cmd.exe
        cmd /C C:\Users\Admin\AppData\Local\Temp\BC2411DEE9DC.CMD
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1260
        • C:\Windows\SysWOW64\tasklist.exe
          TASKLIST /FI "IMAGENAME eq GFExperience.nvi.EXE" /FO CSV
          4⤵
          • Discovers running processes
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:3320
        • C:\Windows\SysWOW64\find.exe
          FIND /I "GFExperience.nvi.EXE"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:4620
        • C:\Windows\SysWOW64\timeout.exe
          TIMEOUT /t 60 /nobreak
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:1748
        • C:\Windows\SysWOW64\tasklist.exe
          TASKLIST /FI "IMAGENAME eq GFExperience.nvi.EXE" /FO CSV
          4⤵
          • Discovers running processes
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:936
        • C:\Windows\SysWOW64\find.exe
          FIND /I "GFExperience.nvi.EXE"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1640
        • C:\Windows\SysWOW64\timeout.exe
          TIMEOUT /t 60 /nobreak
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:1976
        • C:\Windows\SysWOW64\tasklist.exe
          TASKLIST /FI "IMAGENAME eq GFExperience.nvi.EXE" /FO CSV
          4⤵
          • Discovers running processes
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:1704
        • C:\Windows\SysWOW64\find.exe
          FIND /I "GFExperience.nvi.EXE"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:1732
        • C:\Windows\SysWOW64\timeout.exe
          TIMEOUT /t 60 /nobreak
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:4864
        • C:\Windows\SysWOW64\tasklist.exe
          TASKLIST /FI "IMAGENAME eq GFExperience.nvi.EXE" /FO CSV
          4⤵
          • Discovers running processes
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:2844
        • C:\Windows\SysWOW64\find.exe
          FIND /I "GFExperience.nvi.EXE"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:4152
        • C:\Windows\SysWOW64\timeout.exe
          TIMEOUT /t 60 /nobreak
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:5512
        • C:\Windows\SysWOW64\tasklist.exe
          TASKLIST /FI "IMAGENAME eq GFExperience.nvi.EXE" /FO CSV
          4⤵
          • Discovers running processes
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:4336
        • C:\Windows\SysWOW64\find.exe
          FIND /I "GFExperience.nvi.EXE"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:5656
        • C:\Windows\SysWOW64\timeout.exe
          TIMEOUT /t 60 /nobreak
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:4644

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        GFExperience.nvi.EXE

        • Path C:\ProgramData\VirtualAudio.Driver.{1A41C62A-B587-40C0-A1BF-CC36F4C9874C}\nvvad.nvi.exe\GFExperience.nvi.EXE
        • Size 1.1MB
        • SHA256 1180c0180e9e175ec90378f68c1cf0eb177beb9b66d202eda966fe8a8ef9d1f6
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Pdfcore8.dLL

        • Path C:\ProgramData\VirtualAudio.Driver.{1A41C62A-B587-40C0-A1BF-CC36F4C9874C}\nvvad.nvi.exe\Pdfcore8.dLL
        • Size 5.5MB
        • SHA256 cc9dd67664c7aeace554d70bdf08ba06005dc48a32f44245e7a0a4feb7ca4b25
        • MD5 SHA1 SHA512 SSDEEP TLSH

        BC2411DEE9DC.CMD

        • Path C:\Users\Admin\AppData\Local\Temp\BC2411DEE9DC.CMD
        • Size 1KB
        • SHA256 c26c269a568840b85a5c962e23f17d4a65a537bde4d7f2d3a13ffaba22c5beed
        • MD5 SHA1 SHA512 TLSH

        BC2411DEE9DC.CMD

        • Path C:\Users\Admin\AppData\Local\Temp\BC2411DEE9DC.CMD
        • Size 1KB
        • SHA256 89968e919aee96a998ce1e84ee5d26d610eee7a94cfc0eb3d81e054343f2f5f8
        • MD5 SHA1 SHA512 TLSH

        memory/4852-8-0x0000000004300000-0x0000000004358000-memory.dmp

        memory/4852-9-0x0000000004300000-0x0000000004358000-memory.dmp

        memory/4852-11-0x0000000004300000-0x0000000004358000-memory.dmp

        memory/4852-15-0x0000000004300000-0x0000000004358000-memory.dmp

        memory/4852-14-0x0000000004300000-0x0000000004358000-memory.dmp