How to remove virus,spyware from USB drive

If you want to remove viruses and spywares from your USB drive then first take a look how they affect your system.Most common viruses such as ’Ravmon’ , ‘New Folder.exe’, ‘Orkut is banned’ etc are spreading through USB drives. Most anti virus programs are unable to detect them and even if they do, in most cases they are unable to delete the file, only quarantine it. Here are the things which you can do if you want to remove such viruses from your USB drives but first you must learn how to keep your USB drive safe when attached to virus infected computer system ? This will reduce the chances of getting virus infected again and again.

Whenever you plug a USB drive in your system, a window will appear, this is because of autorun. For stopping autorun press shift key after plug in your USB drive.If autorun windows opens then don’t click on Ok , just choose ‘Cancel’. Open the Command Prompt by typing ‘cmd‘ in the run box. In the command prompt type the drive letter: and press enter . Now type dir /w/a and press enter.

This will display a list of the files in the pen drive. Check whether the following files are there or not

* Autorun.inf
* Ravmon.exe
* Bha.vbs
* Iexplore.vbs
* New Folder.exe
* svchost.exe
* Heap41a
* Info.exe
* or any other exe file which may be suspicious.

If any of the above files are there, then probably the USB drive is infected. In command prompt type attrib -r -a -s -h *.* and press enter. This will remove the Read Only, Archive, System and hidden file attribute from all the files. Now just delete the files using the command del filename. example del Ravmon.exe. Delete all the files that are suspicious. To be on a safer side, just scan the USB drive with an anti virus program to check whether it is free of virus or not. Now remove the drive and plug it again. In most of the cases, the real culprit turns out to be the “Autorun.inf” file which mostly gets executed when someone clicks Ok in the dialog window which appears above. Thus the infections can spread.

You can also disable your system USB if you believe that other user is infecting your system from their USB drive.To prevent this you can also keep track of all the USB attached to your system.

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