Ciao Alfonso, mi controlleresti gentilmente questi log:

Logfile of HijackThis v1.98.2
Scan saved at 12.45.32, on 01/02/2005
Platform: Windows 2000 SP3 (WinNT 5.00.2195)
MSIE: Internet Explorer v6.00 (6.00.2600.0000)

Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\system32\svchost.exe
C:\Programmi\File comuni\Symantec Shared\SNDSrvc.exe
C:\Programmi\File comuni\Symantec Shared\SPBBC\SPBBCSvc.exe
C:\Programmi\File comuni\Symantec Shared\ccSetMgr.exe
C:\Programmi\File comuni\Symantec Shared\ccEvtMgr.exe
C:\WINNT\system32\spoolsv.exe
C:\WINNT\System32\svchost.exe
C:\Programmi\Norton AntiVirus\navapsvc.exe
C:\Programmi\Norton AntiVirus\IWP\NPFMntor.exe
C:\WINNT\System32\nvsvc32.exe
C:\WINNT\system32\regsvc.exe
C:\WINNT\system32\MSTask.exe
C:\Programmi\File comuni\Symantec Shared\CCPD-LC\symlcsvc.exe
C:\WINNT\system32\ZoneLabs\vsmon.exe
C:\WINNT\Explorer.EXE
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\WINNT\system32\svchost.exe
C:\Programmi\Zone Labs\ZoneAlarm\zlclient.exe
C:\WINNT\System32\GSICON.EXE
C:\WINNT\System32\dslagent.exe
C:\WINNT\System32\internat.exe
C:\WINNT\System32\RUNDLL32.EXE
C:\Programmi\WinMX\WinMX.exe
C:\Programmi\Internet Explorer\IEXPLORE.EXE
C:\Programmi\Windows Media Player\wmplayer.exe
C:\WINNT\loadclean.exe
C:\WINNT\loadclean.exe
C:\WINNT\System32\mshta.exe
C:\DOCUME~1\MASSY2~1\IMPOST~1\Temp\msvb_default.exe
C:\Programmi\Internet Explorer\IEXPLORE.EXE
C:\Programmi\Lavasoft\Ad-Aware SE Personal\Ad-Aware.exe
C:\Programmi\Internet Explorer\IEXPLORE.EXE
C:\Documents and Settings\Massy2005\Documenti\Programmi\Anti-Spyware\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.it/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://trytofind.info/
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://trytofind.info/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O1 - Hosts: 207.68.176.190 auto.search.msn.com
O1 - Hosts: 207.68.176.190 www.auto.search.msn.com
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - c:\programmi\google\googletoolbar1.dll
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Programmi\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: @msdxmLC.dll,-1@1040,&Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\System32\msdxm.ocx
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Programmi\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\programmi\google\googletoolbar1.dll
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINNT\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [Zone Labs Client] "C:\Programmi\Zone Labs\ZoneAlarm\zlclient.exe"
O4 - HKLM\..\Run: [GSICONEXE] GSICON.EXE
O4 - HKLM\..\Run: [DSLAGENTEXE] dslagent.exe USB
O4 - HKLM\..\Run: [ccApp] "C:\Programmi\File comuni\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [SSC_UserPrompt] C:\Programmi\File comuni\Symantec Shared\Security Center\UsrPrmpt.exe
O4 - HKLM\..\Run: [Symantec NetDriver Monitor] C:\PROGRA~1\SYMNET~1\SNDMon.exe
O4 - HKLM\..\Run: [ControlPanel] C:\WINNT\System32\twink64.exe internat.dll,LoadKeyboardProfile
O4 - HKCU\..\Run: [internat.exe] internat.exe
O4 - HKCU\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINNT\System32\NVMCTRAY.DLL,NvTaskbarInit
O8 - Extra context menu item: &Google Search - res://C:\Programmi\Google\GoogleToolbar1.dll/cmsearch.html
O8 - Extra context menu item: Backward Links - res://C:\Programmi\Google\GoogleToolbar1.dll/cmbacklinks.html
O8 - Extra context menu item: Cached Snapshot of Page - res://C:\Programmi\Google\GoogleToolbar1.dll/cmcache.html
O8 - Extra context menu item: Similar Pages - res://C:\Programmi\Google\GoogleToolbar1.dll/cmsimilar.html
O8 - Extra context menu item: Translate into English - res://C:\Programmi\Google\GoogleToolbar1.dll/cmtrans.html
O17 - HKLM\System\CCS\Services\Tcpip\..\{20A22655-11DE-42FF-A49E-0BBFADE47C88}: NameServer = 62.211.69.150 212.48.4.15
O17 - HKLM\System\CS1\Services\Tcpip\..\{20A22655-11DE-42FF-A49E-0BBFADE47C88}: NameServer = 62.211.69.150 212.48.4.15

Ciao

Grazie

MadMassy

Ciao ,
esegui queste operazioni

riavvia in modalità provvisoria, leggi qui come fare
http://www.aiutamici.com/software/view.asp?tipo=home&CodSw=344&SH=N

apri HIJAC THIS ed elimina come indicato in questo articolo
http://www.aiutamici.com/software/descrizione.asp?CodSw=1175
le righe che seguono, (nel caso le righe da eliminare non compaiono in modalità provvisoria, eliminale dalla modalità normale e riavvia il computer).

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R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://trytofind.info/
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://trytofind.info/
-
O1 - Hosts: 207.68.176.190 auto.search.msn.com
O1 - Hosts: 207.68.176.190 www.auto.search.msn.com
==================================

Con la funzione TROVA di Windows, cerca ed elimina questi file,

==================================
loadclean.exe
msvb_default.exe
==================================

al termine utilizza i programma AD-AWARE e SPYBOT indicati in questo articolo
http://www.aiutamici.com/software/view.asp?tipo=home&CodSw=388&SH=N

sempre in modalità provvisoria fai una scansione Antivirus.

Se non risolvi il problema, mandami il nuovo log con la versione aggiornata di Hijack This.

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Collaboratore Aiutamici