Hello;
by mistake, I executed a shortcut to a folder on my USB key which ultimately is a virus. it executes a script in a folder $RECYCLEBIN/skype.rar … and avast does not detect this virus that infects every drive.
I compressed files here https://drive.google.com/open?id=0B2cSkTlhdMSiU3hJZEkxaXZTR2s
EXCUSE MY ENGLISH I SPEEK FRENCH
hey please follow this guide and attach the logs from mbam and frst+addation.
https://forum.avast.com/index.php?topic=53253.0
a amlware expert will help you out when one is online.
thank you, I’ll try and answer you
thank’s
the last update v 150912-5 removes the virus. 
to Clean USB drives / and protect drives against infections, use MCShield http://www.mcshield.net it is FREE, install and forget