Virus write protect my pendrive?

My pendrive has no write protect feature. Today I found out it has been write protected. I can see there are some unknown files in there. It's a virus, I know. Because of the write protect, my Kaspersky can't remove them. Even formatting can't be done now. How do I remove the write protect? Does the virus do this?

Below is a screenshot of the contents of my pendrive. The circled ones are the virus. Got them from my office. My pc is protected from them though (Kaspersky 6.0).

* eSeong Network User Reviews *

* ) What brand is your pendrive? Maybe you can go to manufacturer's website to look for right formatting software for pendrive..

* ) Use Unlocker to delete the file .. http://www.filehippo.com/download_unlocker/

* ) Love Calculator sounds familiar.

Give this a whirl.

Please download Flash_Disinfector.exe by sUBs and save it to your desktop:
Note: Please delete any existing copy of Flash Disinfector(if any) on your pc and download this one.
Double-click Flash_Disinfector.exe to run it.
Follow any prompts that may appear.
Your desktop will vanish for a while, and then reappear. This is normal.
Wait until the program has finished scanning, then please exit the program.
Restart your computer and see if problem still persists.