My system file is infected Vundo Trojan virus. Its location is c:\windows\system32\geeby.dll. My existing antivirus / spam software has failed! "Microsoft Defender" even said "Your system is running properly" and has nothing to recognize I have tried this tool - Spybot Search & Destroy has detected somewhat but didn't remove it, then I tried Symantec Antivirus, it do not delete the trojan / virus or clean up. How to remove geeby.dll, infected with Trojan Vundo virus ????