Any way to clear the Brontok Worm off my flash drive?

'Twas about three years ago when that trash appeared in my mom's laptop. I just so happened to plug my flash drive in one day when the popup about the “near-extinct” species of eagle flashed for the first time. At the time, I didn't know what it said until I did some research on the subject matter and found out that the Brontok eagle is actually of least concern over in the mid-Asian area. By then I knew the message was a hoax, but, for a while, Mom didn't do anything about it until about two months later (hey, we're practically broke here, so no blame, please!) when she got Malwarebytes Anti-Malware, which seemed to work on the laptop. However, the Worm still remains in my flash drive to this day, proven by the fact that I temporarily infected my brother's laptop as well, obvious symptoms showing DAYS later, and I've not seen any questions, much less any answers, to this particular subject.
Asked Aug 04, 2014
Edited Aug 04, 2014

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