W32.Annunci.B@mm is a mass-mailing worm that gathers email addresses from the compromised computer.
HKEY_CURRENT_USERSoftwareFreeware{491A5872-C30F-4E54-8FF1-BF31CC73DC4B}HKEY_LOCAL_MACHINESOFTWAREMicrosoftInternet ExplorerExtensions{491A5872-C30F-4E54-8FF1-BF31CC73DC4B}HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionUninstall{4BDBAC10-4087-49CD-BB07-38943F4860CD}