Follow these steps:
1. Download
HIJACKTHIS
2. Save the program in a folder on your desktop, execute and "Run a scan and save a logfile". ( DO NOT FIX ANYTHING! )
3. When done, copy and paste the log in the
"malware and hijackthis-log forum" here on TGS, and an expert on the field will help you, step by step, to get rid of that nasty malware!
Oh, and good luck!