Please do take these steps :
Due to the nature of the infection, any usb or external device may have been infected. Please plug in any external device that you have used recently.
Please download flash desinfector
by sUBs and save it to your Desktop.
Double-click to run it and follow any prompts that may appear.
Note: Some security programs will flag Flash_Disinfector as being some sort of malware, you can safely ignore these warnings.
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.