A Virus
Program to Disable USB Ports
In this post, I will show how to create a simple virus that
disables/blocks the USB ports on the computer (PC). As usual, I am using
my favorite C programming language to create this virus. Anyone with a basic
knowledge of C language should be able to understand the working of this
virus program.
Once this virus is executed it will immediately disable
all the USB ports on the computer. As a result you’ll will not be able to
use your pen drive or any other USB peripheral devices on the
computer. The source code for this virus is available for download. You can
test this virus on your own computer without any worries since I have also
given a program to re-enable all the USB ports.
1.
Download the source code of the virus program on to your computer
from the following link:
The download contains the following 2 files:
·
block_usb.c (source code)
·
unblock_usb.c (source code)
2. You need to compile them
before you can run it. A step-by-step procedure to compile C programs is given
in my post - How to Compile CPrograms.
3. Upon compilation of
block_usb.c you get block_usb.exe which is a simple virus that will block (disable) all
the USB ports on the computer upon execution (double click).
3. To test this virus, just
run the block_usb.exe file and insert a USB pen drive (thumb drive). Now you can see
that your pen drive will never get detected. To re-enable the USB ports just
run theunblock_usb.exe (you need to compile unblock_usb.c) file. Now insert the
pen drive and it should get detected.
4. You can also change the icon of
this file to make it look like a legitimate program. For more details on this
refer my post – How to Change the ICONof an EXE file (This step is also
optional).
How it Works?
The idea behind the working of this virus is pretty
straightforward. It works by gaining access to the Windows registry and modifying
it’s settings to disable the USB device support on the computer.
On the other hand, the other program will re-set the registry
settings back to the normal so that the support for USB devices is re-enabled.
I hope you like this post. Please pass your comments
