Hi luben,
You could check the files in question against virustotal.com, upload there and give us the results.
Consider this info on crypt.exe:
http://www.threatexpert.com/files/crypt.exe.htmlIf you should have an autorun issue, you could use this, Flash Drive Disinfector,
Download Flash_Disinfector.exe by sUBs from >
http://www.techsupportforum.com/sectools/sUBs/Flash_Disinfector.exe < and save it to your desktop.
* Double-click Flash_Disinfector.exe to run it and follow any prompts that may appear.
* The utility may ask you to insert your flash drive and/or other removable drives including
your mobile phone. Please do so and allow the utility to clean up those drives as well.
* Wait until it has finished scanning and then exit the program.
* Reboot your computer when done.
Note: Flash_Disinfector will create a hidden folder named autorun.inf in each partition and every USB drive plugged in when you ran it. Don't delete this folder...it will help protect your drives from future infection.
Also see this link for more information on Flash Disinfector,
http://experi3nc3.wordpress.com/2007/05/10/flash-disinfector-by-subs/You could also perform a additional scan with stinger.exe: Free worm removal tool; McAfee Avert Stinger:
http://vil.nai.com/vil/stinger/ Use the latest online version of it, you can use it alongside your resident avast av-solution,
polonus