Autorun.inf?

Okay so this is my problem. Yesterday my little sister got an MP3 player and when I plugged it into our laptop avast popped up saying "A trojan (autorun.inf) had been blocked." I immediately hit the books to find out what the problem was and how to solve it, etc. I scanned the mp3 player by itself and found that it was infected. With avast, I deleted the infections. Things seem to be okay, but I've read that the trojan could have still spread to my hard drive. Is this true? Am I safe since Avast blocked the trojan? I'm worried about keyloggers, etc that can come from autorun's. Please help! And thanks in advance!

Hello and welcome to GeekPolice.Net My name is Dave. I will be helping you out with your particular problem on your computer.

1. I will be working on your Malware issues. This may or may not solve other issues you have with your machine.
2. The fixes are specific to your problem and should only be used for this issue on this machine.
3. If you don't know or understand something, please don't hesitate to ask.
4. Please DO NOT run any other tools or scans while I am helping you.
5. It is important that you reply to this thread. Do not start a new topic.
6. Your security programs may give warnings for some of the tools I will ask you to use. Be assured, any links I give are safe.
7. Absence of symptoms does not mean that everything is clear.

If you can't access the internet with your infected computer you will have to download and transfer any programs to the computer you're using now and transfer them to the infected computer with a CD-RW or a USB storage device. I prefer a CD because a storage device can get infected. If you use a storage device hold the shift key down while inserting the USB storage device for about 10 secs. You will also have to transfer the logs you receive back to the good computer using the same method until we can get the computer back on-line.
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Download Panda USB and AutoRun Vaccine and save it to your desktop.

* Extract (unzip) the file to your desktop and a folder named USBVaccine will be created.
* Open that folder and double-click on USBVaccine.exe to start the program.
* Click Run
* Click the button to Vaccinate computer.
* Insert your USB flash drive.
* When the name of the drive appears in the dialog box, click the button to Vaccinate USB drive(s).
* Exit Panda USB and AutoRun Vaccine when done.

Note: Computer AutoRun Vaccination will prevent any AutoRun file from running, regardless of whether the removable device is infected or not. USB Vaccination disables the autorun file so it cannot be read, modified or replaced by malicious code. The Panda Resarch Blog advises that once USB drives have been vaccinated, they cannot be reversed except with a format. If you do this, be sure to back up your data files first or they will be lost during the formatting process.

Thank you! It worked well on the few usbs that I tried out but each time I try to vaccinate the mp3 player that originally contained the virus (I think) I get the error "cannot vaccinate." And then it says something about not being able to read volume or something of the sort.

Yep, after I initially did the scan/delete it seems to be working fine. Just not compatible with Panda I guess. . . so far everything seems to be working well though. If any problems arise I'll check back in. Thank you for you help!!!

You're welcome. Let's me know if there's anything else we can do.