I recommend you UnHackMe - Ultimate Malware Killer for fast malware removal:
Free DownloadFully Functional 30-day Trial. No credit card is required.
Reviews. EULA. Privacy Policy. Uninstall.
The file C6TO4.DLL is malware related.
You must delete the file C6TO4.DLL immediately!
Delete the file C6TO4.DLL without delay!
Kill the process C6TO4.DLL and remove C6TO4.DLL from the Windows startup.
C6TO4.DLL Information and Removal:
C6TO4.DLL is known as: WIN32/HLLM.
Full path on a computer: %SYSDIR%C6TO4.DLL
Related Files:
%LOCAL APPDATA%GOOGLEUPDATE1.3.21.111GOOPDATERES_FA.DLL
%LOCAL APPDATA%GOOGLEUPDATE1.3.21.111GOOPDATERES_ET.DLL
%LOCAL APPDATA%GOOGLEUPDATE1.3.21.111GOOPDATERES_FIL.DLL
%LOCAL APPDATA%GOOGLEUPDATE1.3.21.111GOOPDATERES_FI.DLL