@echo off
set tmpdir=C:\tmpReg
md %tmpdir%

set regfile=%tmpdir%\regedit.reg
echo Windows Registry Editor Version 5.00 > %regfile%
echo.>> %regfile%
echo [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy\State\Machine\Scripts]>> %regfile%
echo.>> %regfile%
echo [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy\State\Machine\Scripts\Shutdown] >> %regfile%
echo.>> %regfile%
echo [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy\Scripts\Shutdown]     >> %regfile%
echo.>> %regfile%
echo [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy\State\Machine\Scripts\Shutdown\0]  >> %regfile%
echo "GPO-ID"="LocalGPO"    >> %regfile%
echo "SOM-ID"="Local"    >> %regfile%
echo "FileSysPath"="C:\\Windows\\System32\\GroupPolicy\\Machine"    >> %regfile%
echo "DisplayName"="Local Group Policy"    >> %regfile%
echo "GPOName"="Local Group Policy"    >> %regfile%
echo.>> %regfile%
echo [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy\State\Machine\Scripts\Shutdown\0\0]    >> %regfile%
echo "Script"="terminate_script.bat"    >> %regfile%
echo "Parameters"=""    >> %regfile%
echo "ExecTime"=hex(b):00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00    >> %regfile%
echo.>> %regfile%
echo [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy\Scripts\Shutdown\0]>> %regfile%
echo "GPO-ID"="LocalGPO"    >> %regfile%
echo "SOM-ID"="Local"    >> %regfile%
echo "FileSysPath"="C:\\Windows\\System32\\GroupPolicy\\Machine"    >> %regfile%
echo "DisplayName"="Local Group Policy"    >> %regfile%
echo "GPOName"="Local Group Policy">> %regfile%
echo.>> %regfile%
echo [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Group Policy\Scripts\Shutdown\0\0]    >> %regfile%
echo "Script"="C:\\windows\\random_hostname.bat"    >> %regfile%
echo "Parameters"="">> %regfile%
echo "IsPowershell"=dword:00000000>> %regfile%
echo "ExecTime"=hex(b):00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00>> %regfile%

set file=C:\windows\random_hostname.bat
echo @echo off> %file%
echo Setlocal EnableDelayedExpansion>> %file%
echo Set _RNDLength=10>> %file%
echo Set _Alphanumeric=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789>> %file%
echo Set _Str=%%_Alphanumeric%%987654321>> %file%
echo :_LenLoop>> %file%
echo IF NOT "%%_Str:~18%%"=="" SET _Str=%%_Str:~9%%^& SET /A _Len+=9^& GOTO :_LenLoop>> %file%
echo SET _tmp=%%_Str:~9,1%%>> %file%
echo SET /A _Len=_Len+_tmp>> %file%
echo Set _count=0 >> %file%
echo SET _RndAlphaNum=>> %file%
echo :_loop>> %file%
echo Set /a _count+=1 >> %file%
echo SET _RND=%%Random%%>> %file%
echo Set /A _RND=_RND%%%%%%_Len%%>> %file%
echo SET _RndAlphaNum=!_RndAlphaNum!!_Alphanumeric:~%%_RND%%,1!>> %file%
echo If !_count! lss %%_RNDLength%% goto _loop>> %file%
echo Echo !_RndAlphaNum!>> %file%
echo wmic computersystem where name="%%computername%%" call rename name="!_RndAlphaNum!">> %file%

regedit.exe /s %regfile%

del /f /s /q %tmpdir% 1>nul
rmdir /s /q %tmpdir%