ok, so i scanned again with kaspersky, and it said that it has found out the trojan and the file it is hiding, i got to the file place in my computer and deleted it. Then i let kaspersky decode the virus and weirdly it worked! lastly, i scanned my whole system 3 times just to be sure, and the search turned out clean! so i guess i am free from the virus. thanks so much man!