Finding Win32.Sfive on your computer is not something that should bring you must pleasure. This is a backdoor Trojan pest that is design specifically to sneak into PCs for the purpose of either stealing information or to hijack the PC to use it for malicious endeavors. You will usually find these deceptive programs lurking around shareware and freeware sites or it is distributed by e-mail. Regardless of how you got it, you will want to get rid of it.
Remove at once.
Removal of this type for Win32.Sfive is not recommended for the novice computer user. However, if you are familiar with programming then proceed with using Task Manager to eliminate all files, folders, registry values and processes related to the program. For the computer user that would prefer something a little less hands-on there is SpyZooka.
SpyZooka is a safe and effective anti-spyware application designed to make the process simple and easy. SpyZooka will run a scan to determine the level of infection and will then remove all spyware that has been detected. A member of the Better Business Bureau and recipient of numerous awards, you can trust SpyZooka.