Per un consiglio da chi sicuramente ne sa più di me, posto il log di Hijackthis poichè l'antivirus durante la scansione ha rilevato l'infezione che ho indicato nell'oggetto, risulta in: "C:\program files\big fish games game suite\installers\atlantissypatrol_si_l1_gf1130t1l1_do_xcd.exe. Credo di averla rimossa perche la successiva scansione è risultata negativa. Grazie!
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 9.46.00, on 13/06/2009
Platform: Windows Vista SP1 (WinNT 6.00.1905)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
Boot mode: Normal

Running processes:
C:\Windows\system32\taskeng.exe
C:\Windows\system32\Dwm.exe
C:\Windows\Explorer.EXE
C:\Windows\system32\taskeng.exe
C:\Program Files\Sony\VAIO Update 4\VAIOUpdt.exe
C:\Windows\System32\mobsync.exe
C:\Program Files\Sony\VAIO Power Management\SPMgr.exe
C:\Windows\system32\igfxsrvc.exe
C:\Program Files\Windows Defender\MSASCui.exe
c:\PROGRA~1\mcafee.com\agent\mcagent.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\Windows\System32\hkcmd.exe
C:\Windows\System32\igfxpers.exe
C:\Program Files\Java\jre1.6.0_07\bin\jusched.exe
C:\Program Files\sony\ISB Utility\ISBMgr.exe
C:\Program Files\sony\Marketing Tools\MarketingTools.exe
C:\Program Files\sony\Network Utility\LANUtil.exe
C:\Windows\system32\conime.exe
C:\Users\nessuno\Desktop\barra\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.club-vaio.com
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.it/webhp?sourceid=navclient&hl=it&ie=UTF-8
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.club-vaio.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft.com/fwlink/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft.com/fwlink/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O1 - Hosts: ::1 localhost
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: McAfee Phishing Filter - {27B4851A-3207-45A2-B947-BE8AFE6163AB} - c:\PROGRA~1\mcafee\msk\mskapbho.dll
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_07\bin\ssv.dll
O2 - BHO: scriptproxy - {7DB2D5A0-7241-4E79-B68D-6309F01C5231} - c:\PROGRA~1\mcafee\VIRUSS~1\scriptsn.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - C:\Program Files\Google\Google Toolbar\GoogleToolbar.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\4.1.805.1852\swg.dll
O2 - BHO: McAfee SiteAdvisor BHO - {B164E929-A1B6-4A06-B104-2CD0E90A88FF} - c:\PROGRA~1\mcafee\SITEAD~1\mcieplg.dll
O3 - Toolbar: &Google Toolbar - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - C:\Program Files\Google\Google Toolbar\GoogleToolbar.dll
O3 - Toolbar: McAfee SiteAdvisor Toolbar - {0EBBBE48-BAD4-4B4C-8E5A-516ABECAE064} - c:\PROGRA~1\mcafee\SITEAD~1\mcieplg.dll
O4 - HKLM\..\Run: [Windows Defender] %ProgramFiles%\Windows Defender\MSASCui.exe -hide
O4 - HKLM\..\Run: [RtHDVCpl] RtHDVCpl.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [IgfxTray] C:\Windows\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\Windows\system32\hkcmd.exe
O4 - HKLM\..\Run: [Persistence] C:\Windows\system32\igfxpers.exe
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_07\bin\jusched.exe"
O4 - HKLM\..\Run: [ISBMgr.exe] "C:\Program Files\Sony\ISB Utility\ISBMgr.exe"
O4 - HKLM\..\Run: [McENUI] C:\PROGRA~1\McAfee\MHN\McENUI.exe /hide
O4 - HKLM\..\Run: [MarketingTools] C:\Program Files\Sony\Marketing Tools\MarketingTools.exe
O4 - HKLM\..\Run: [mcagent_exe] "C:\Program Files\McAfee.com\Agent\mcagent.exe" /runkey
O4 - HKCU\..\Run: [NSUFloatingUI] "C:\Program Files\Sony\Network Utility\LANUtil.exe"
O4 - HKUS\S-1-5-19\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'SERVIZIO LOCALE')
O4 - HKUS\S-1-5-19\..\Run: [WindowsWelcomeCenter] rundll32.exe oobefldr.dll,ShowWelcomeCenter (User 'SERVIZIO LOCALE')
O4 - HKUS\S-1-5-20\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'SERVIZIO DI RETE')
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\PROGRA~1\Java\JRE16~1.0_0\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\PROGRA~1\Java\JRE16~1.0_0\bin\ssv.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\Office12\REFIEBAR.DLL
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O13 - Gopher Prefix:
O18 - Protocol: sacore - {5513F07E-936B-4E52-9B00-067394E91CC5} - c:\PROGRA~1\mcafee\SITEAD~1\mcieplg.dll
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\COMMON~1\Skype\SKYPE4~1.DLL
O23 - Service: ArcSoft Connect Daemon (ACDaemon) - ArcSoft Inc. - C:\Program Files\Common Files\ArcSoft\Connection Service\Bin\ACService.exe
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: IviRegMgr - InterVideo - c:\Program Files\Common Files\InterVideo\RegMgr\iviRegMgr.exe
O23 - Service: McAfee SiteAdvisor Service - Unknown owner - C:\Program Files\McAfee\SiteAdvisor\McSACore.exe
O23 - Service: McAfee Services (mcmscsvc) - McAfee, Inc. - C:\PROGRA~1\McAfee\MSC\mcmscsvc.exe
O23 - Service: McAfee Network Agent (McNASvc) - McAfee, Inc. - c:\PROGRA~1\COMMON~1\mcafee\mna\mcnasvc.exe
O23 - Service: McAfee Scanner (McODS) - McAfee, Inc. - C:\PROGRA~1\McAfee\VIRUSS~1\mcods.exe
O23 - Service: McAfee Proxy Service (McProxy) - McAfee, Inc. - c:\PROGRA~1\COMMON~1\mcafee\mcproxy\mcproxy.exe
O23 - Service: McAfee Real-time Scanner (McShield) - McAfee, Inc. - C:\PROGRA~1\McAfee\VIRUSS~1\mcshield.exe
O23 - Service: McAfee SystemGuards (McSysmon) - McAfee, Inc. - C:\PROGRA~1\McAfee\VIRUSS~1\mcsysmon.exe
O23 - Service: McAfee Personal Firewall Service (MpfService) - McAfee, Inc. - C:\Program Files\McAfee\MPF\MPFSrv.exe
O23 - Service: MSCSPTISRV - Sony Corporation - C:\Program Files\Common Files\Sony Shared\AVLib\MSCSPTISRV.exe
O23 - Service: McAfee Anti-Spam Service (MSK80Service) - McAfee, Inc. - C:\Program Files\McAfee\MSK\MskSrver.exe
O23 - Service: NSUService - Sony Corporation - C:\Program Files\sony\Network Utility\NSUService.exe
O23 - Service: PACSPTISVR - Sony Corporation - C:\Program Files\Common Files\Sony Shared\AVLib\PACSPTISVR.exe
O23 - Service: Macrium Reflect Image Mounting Service (ReflectService) - Unknown owner - C:\Program Files\Macrium\Reflect\ReflectService.exe
O23 - Service: Realtek Audio Service (RtkAudioService) - Realtek Semiconductor - C:\Windows\RtkAudioService.exe
O23 - Service: SBSD Security Center Service (SBSDWSCService) - Safer Networking Ltd. - C:\Program Files\Spybot - Search & Destroy\SDWinSec.exe
O23 - Service: VAIO Media plus Content Importer (SOHCImp) - Sony Corporation - C:\Program Files\Sony\VAIO Media plus\SOHCImp.exe
O23 - Service: VAIO Media plus Digital Media Server (SOHDms) - Sony Corporation - C:\Program Files\Sony\VAIO Media plus\SOHDms.exe
O23 - Service: VAIO Media plus Device Searcher (SOHDs) - Sony Corporation - C:\Program Files\Sony\VAIO Media plus\SOHDs.exe
O23 - Service: Sony SPTI Service (SPTISRV) - Sony Corporation - C:\Program Files\Common Files\Sony Shared\AVLib\SPTISRV.exe
O23 - Service: CamMonitor (uCamMonitor) - ArcSoft, Inc. - C:\Program Files\ArcSoft\Magic-i Visual Effects 2\uCamMonitor.exe
O23 - Service: VAIO Entertainment TV Device Arbitration Service - Sony Corporation - C:\Program Files\Common Files\Sony Shared\VAIO Entertainment Platform\VzHardwareResourceManager\VzHardwareResourceManager\VzHardwareResourceManager.exe
O23 - Service: VAIO Event Service - Sony Corporation - C:\Program Files\sony\VAIO Event Service\VESMgr.exe
O23 - Service: VAIO Power Management - Sony Corporation - C:\Program Files\Sony\VAIO Power Management\SPMService.exe
O23 - Service: VAIO Content Folder Watcher (VCFw) - Sony Corporation - C:\Program Files\Common Files\Sony Shared\VAIO Content Folder Watcher\VCFw.exe
O23 - Service: VAIO Content Metadata Intelligent Analyzing Manager (VcmIAlzMgr) - Sony Corporation - C:\Program Files\Sony\VCM Intelligent Analyzing Manager\VcmIAlzMgr.exe
O23 - Service: VAIO Content Metadata XML Interface (VcmXmlIfHelper) - Sony Corporation - C:\Program Files\Common Files\Sony Shared\VcmXml\VcmXmlIfHelper.exe
O23 - Service: VAIO Entertainment UPnP Client Adapter (Vcsw) - Sony Corporation - C:\Program Files\Common Files\Sony Shared\VAIO Entertainment Platform\VCSW\VCSW.exe
O23 - Service: VAIO Entertainment Database Service (VzCdbSvc) - Sony Corporation - C:\Program Files\Common Files\Sony Shared\VAIO Entertainment Platform\VzCdb\VzCdbSvc.exe
O23 - Service: XAudioService - Conexant Systems, Inc. - C:\Windows\system32\DRIVERS\xaudio.exe

--
End of file - 9605 bytes

Ciao.
Per sicurezza fai questa scansione:
Scarica ed installa MalwareBytes:
clicca qui per il download : http://www.aiutamici.com/software?id=80346
Prima di fare la scansione AGGIORNALO. (è molto importante)
Esegui una scansione completa del sistema.
Posta il log.

Ce l'ho gia installato, con lo stesso ho eseguito più volte la scansione dopo che avevo eliminato dalla cartella Big fish games i files che dal percorso indicato dall'antivirus sembravano quelli infetti. Malwarebytes non ha rilevato nulla!

Come ho detto nel primo topic era solo per avere un parere da chi ne sa più di me. Poichè non essendo molto pratico ho il dubbio che mi sfugga qualche particolare importante. Per esempio non idea quali siano questi programmi inutili caricati all'avvio!!

Saresti cosi' gentile da spiegarmi "igfxtray" cos'è ed eliminandolo cosa succede? stessa cosa pr quanto riguarda "adobe";
Di java il primo dovrebbe riferirsi all'aggiornamento automatico, giusto? e gli altri due?
....e Marketing Tools?

Ti chiedo questa spiegazione non per sfiducia ma perchè voglio capire dopo averli eliminati cosa cambia in modo da potemi comportare di conseguenza. grazie per la pazienza!

O4 - HKLM\..\Run: [IgfxTray] C:\Windows\system32\igfxtray.exe
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_07\bin\jusched.exe
O4 - HKLM\..\Run: [MarketingTools] C:\Program Files\Sony\Marketing Tools\MarketingTools.exe
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\PROGRA~1\Java\JRE16~1.0_0\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\PROGRA~1\Java\JRE16~1.0_0\bin\ssv.dll

Ho aggiornato Java alla versione attuale soltanto che difatto non ha aggiornato la versione precedente bensì l'ha reinstallato. Ho eliminto la versione precedente dai programmi installati. Ho fatto bene?
Per l'aggiornamento ho seguito il percorso Start\pannello di controllo\java\pannello di controllo java\aggiona adesso.

C'è una procedura diversa?

Da questo:
jre1.6.0_07
L'ultima versione del Java, è la 13 (o 14?) tu hai la versione 7.
Stessa cosa per Adobe.
Da Installazione Applicazioni, disinstalla le versioni installate di Java che non riportino versione 13.