Analysis

  • user interaction
    yes
  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    16/08/2026, 17:13

General

  • Target
    Bypass-Admin-Installer.bat
  • Size 2KB
  • Sample260816-vrprhssfnc
  • SHA256 d341c511f10e9bf1ea99157ea1fc0e2965e96849ca6693967296db6e2d54ca80
  • MD5 SHA1 SHA512 TLSH

Malware Config

Signatures

  • Drops desktop.ini file(s) 3 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • Executes a command shell one-liner 1 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Bypass-Admin-Installer.bat"
    1⤵
    • Executes a command shell one-liner
    • Suspicious use of WriteProcessMemory
    PID:1124
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c powershell -NoProfile -Command "Add-Type -AssemblyName System.Windows.Forms; $FileBrowser = New-Object System.Windows.Forms.OpenFileDialog; $FileBrowser.Filter = 'EXE Files|*.exe'; $FileBrowser.Title = 'Select EXE Installer'; if ($FileBrowser.ShowDialog() -eq 'OK') { echo $FileBrowser.FileName }"
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:956
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -NoProfile -Command "Add-Type -AssemblyName System.Windows.Forms; $FileBrowser = New-Object System.Windows.Forms.OpenFileDialog; $FileBrowser.Filter = 'EXE Files|*.exe'; $FileBrowser.Title = 'Select EXE Installer'; if ($FileBrowser.ShowDialog() -eq 'OK') { echo $FileBrowser.FileName }"
        3⤵
        • Drops desktop.ini file(s)
        • Command and Scripting Interpreter: PowerShell
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:4588
    • C:\Windows\system32\timeout.exe
      timeout /t 2
      2⤵
      • Delays execution with timeout.exe
      PID:4192
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:1580
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalService -p -s fdPHost
      1⤵
        PID:4512

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            memory/4588-0-0x00007FF9027EF000-0x00007FF9027F0000-memory.dmp

            memory/4588-1-0x00007FF902660000-0x00007FF903004000-memory.dmp

            memory/4588-4-0x00000115216D0000-0x00000115216F2000-memory.dmp

            memory/4588-5-0x00007FF902660000-0x00007FF903004000-memory.dmp

            memory/4588-6-0x00007FF902660000-0x00007FF903004000-memory.dmp

            memory/4588-7-0x00007FF902660000-0x00007FF903004000-memory.dmp

            memory/4588-8-0x00007FF902660000-0x00007FF903004000-memory.dmp

            memory/4588-9-0x00007FF902660000-0x00007FF903004000-memory.dmp

            memory/4588-10-0x00007FF902660000-0x00007FF903004000-memory.dmp

            memory/4588-11-0x00007FF902660000-0x00007FF903004000-memory.dmp

            memory/4588-12-0x00007FF902660000-0x00007FF903004000-memory.dmp

            memory/4588-13-0x00007FF902660000-0x00007FF903004000-memory.dmp

            memory/4588-14-0x00007FF902660000-0x00007FF903004000-memory.dmp

            memory/4588-16-0x00007FF902660000-0x00007FF903004000-memory.dmp

            memory/4588-17-0x00007FF902660000-0x00007FF903004000-memory.dmp

            memory/4588-18-0x00007FF902660000-0x00007FF903004000-memory.dmp

            memory/4588-20-0x00007FF902660000-0x00007FF903004000-memory.dmp