ciao a tutti, come evidenziato in oggetto, ho notato troppi file missing in questa scansione eppure sono quasi sicuro di non aver nessuna infezione in atto visto che sono protetto con kaspersky pure, malwarebyte, search & destroy e SpywareBlaster.
potete darmi un'occhiata? grazie.

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 17:41:23, on 16/05/2014
Platform: Unknown Windows (WinNT 6.01.3505 SP1)
MSIE: Internet Explorer v11.0 (11.00.9600.17041)
Boot mode: Normal

Running processes:
C:\Program Files (x86)\NVIDIA Corporation\Update Core\NvBackend.exe
C:\Program Files (x86)\Common Files\Acronis\Schedule2\schedhlp.exe
C:\Program Files (x86)\HP\Digital Imaging\bin\hpqtra08.exe
C:\Program Files (x86)\HP\HP Software Update\hpwuSchd2.exe
C:\Program Files (x86)\Common Files\Java\Java Update\jusched.exe
C:\Program Files (x86)\Kaspersky Lab\Kaspersky PURE 3.0\avp.exe
C:\Program Files (x86)\HP\Digital Imaging\bin\hpqSTE08.exe
C:\Program Files (x86)\HP\Digital Imaging\bin\hpqbam08.exe
C:\Program Files (x86)\HP\Digital Imaging\bin\hpqgpc01.exe
C:\Program Files (x86)\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.telecomitalia.it/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft.com/fwlink/p/?LinkId=255141
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/p/?LinkId=255141
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = C:\Windows\SysWOW64\blank.htm
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O2 - BHO: (no name) - {02478D38-C3F9-4efb-9B51-7695ECA05670} - (no file)
O2 - BHO: HP Print Enhancer - {0347C33E-8762-4905-BF09-768834316C61} - C:\Program Files (x86)\HP\Digital Imaging\Smart Web Printing\hpswp_printenhancer.dll
O2 - BHO: ContentBlockerBrowserHelperObject - {5564CC73-EFA7-4CBF-918A-5CF7FBBFFF4F} - C:\Program Files (x86)\Kaspersky Lab\Kaspersky PURE 3.0\IEExt\ContentBlocker\ie_content_blocker_plugin.dll
O2 - BHO: VirtualKeyboardBrowserHelperObject - {73455575-E40C-433C-9784-C78DC7761455} - C:\Program Files (x86)\Kaspersky Lab\Kaspersky PURE 3.0\IEExt\VirtualKeyboard\ie_virtual_keyboard_plugin.dll
O2 - BHO: Java(tm) Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files (x86)\Java\jre7\bin\ssv.dll
O2 - BHO: Safe Money Plugin - {9E6D0D23-3D72-4A94-AE1F-2D167624E3D9} - C:\Program Files (x86)\Kaspersky Lab\Kaspersky PURE 3.0\IEExt\OnlineBanking\online_banking_bho.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - C:\Program Files (x86)\Google\Google Toolbar\GoogleToolbar_32.dll
O2 - BHO: Free Download Manager - {CC59E0F9-7E43-44FA-9FAA-8377850BF205} - C:\Program Files (x86)\Free Download Manager\iefdm2.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files (x86)\Java\jre7\bin\jp2ssv.dll
O2 - BHO: link filter bho - {E33CF602-D945-461A-83F0-819F76A199F8} - C:\Program Files (x86)\Kaspersky Lab\Kaspersky PURE 3.0\IEExt\UrlAdvisor\klwtbbho.dll
O2 - BHO: HP Smart BHO Class - {FFFFFFFF-CF4E-4F2B-BDC2-0E72E116A856} - C:\Program Files (x86)\HP\Digital Imaging\Smart Web Printing\hpswp_BHO.dll
O3 - Toolbar: Google Toolbar - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - C:\Program Files (x86)\Google\Google Toolbar\GoogleToolbar_32.dll
O4 - HKLM\..\Run: [HP Software Update] C:\Program Files (x86)\HP\HP Software Update\HPWuSchd2.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files (x86)\Common Files\Java\Java Update\jusched.exe"
O4 - HKLM\..\Run: [AVP] "C:\Program Files (x86)\Kaspersky Lab\Kaspersky PURE 3.0\avp.exe"
O4 - HKCU\..\Run: [Sidebar] C:\Program Files\Windows Sidebar\sidebar.exe /autoRun
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files (x86)\HP\Digital Imaging\bin\hpqtra08.exe
O8 - Extra context menu item: Aggiungi ad Anti-Banner - C:\Program Files (x86)\Kaspersky Lab\Kaspersky PURE 3.0\ie_banner_deny.htm
O8 - Extra context menu item: Scarica con Free Download Manager - file://C:\Program Files (x86)\Free Download Manager\dllink.htm
O8 - Extra context menu item: Scarica i video con Free Download Manager - file://C:\Program Files (x86)\Free Download Manager\dlfvideo.htm
O8 - Extra context menu item: Scarica selezionati con Free Download Manager - file://C:\Program Files (x86)\Free Download Manager\dlselected.htm
O8 - Extra context menu item: Scarica tutto con Free Download Manager - file://C:\Program Files (x86)\Free Download Manager\dlall.htm
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files (x86)\Java\jre7\bin\jp2iexp.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files (x86)\Java\jre7\bin\jp2iexp.dll
O9 - Extra button: Tastiera Virtuale - {0C4CC089-D306-440D-9772-464E226F6539} - C:\Program Files (x86)\Kaspersky Lab\Kaspersky PURE 3.0\IEExt\VirtualKeyboard\ie_virtual_keyboard_plugin.dll
O9 - Extra button: Controllo URL - {CCF151D8-D089-449F-A5A4-D9909053F20F} - C:\Program Files (x86)\Kaspersky Lab\Kaspersky PURE 3.0\IEExt\UrlAdvisor\klwtbbho.dll
O9 - Extra button: Visualizza o nasconde HP Smart Web Printing - {DDE87865-83C5-48c4-8357-2F5B1AA84522} - C:\Program Files (x86)\HP\Digital Imaging\Smart Web Printing\hpswp_BHO.dll
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~2\COMMON~1\Skype\SKYPE4~1.DLL
O20 - AppInit_DLLs: 
O23 - Service: Servizio Acronis Scheduler2 (AcrSch2Svc) - Acronis - C:\Program Files (x86)\Common Files\Acronis\Schedule2\schedul2.exe
O23 - Service: ArcSoft Exchange Service (ADExchange) - ArcSoft Inc. - C:\Program Files (x86)\Common Files\ArcSoft\esinter\Bin\eservutil.exe
O23 - Service: Adobe Acrobat Update Service (AdobeARMservice) - Adobe Systems Incorporated - C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\armsvc.exe
O23 - Service: Adobe Flash Player Update Service (AdobeFlashPlayerUpdateSvc) - Adobe Systems Incorporated - C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
O23 - Service: Acronis Nonstop Backup service (afcdpsrv) - Acronis - C:\Program Files (x86)\Common Files\Acronis\CDP\afcdpsrv.exe
O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)
O23 - Service: Servizio Kaspersky Anti-Virus (AVP) - Kaspersky Lab ZAO - C:\Program Files (x86)\Kaspersky Lab\Kaspersky PURE 3.0\avp.exe
O23 - Service: COMODO Programs Manager Service (CPMService) - Unknown owner - C:\Program Files\COMODO\COMODO Programs Manager\CPMService.exe
O23 - Service: Servizio di controllo CryptoStorage (CSObjectsSrv) - Infowatch - C:\Program Files (x86)\Common Files\InfoWatch\CryptoStorage\ProtectedObjectsSrv.exe
O23 - Service: @%SystemRoot%\system32\efssvc.dll,-100 (EFS) - Unknown owner - C:\Windows\System32\lsass.exe (file missing)
O23 - Service: @%systemroot%\system32\fxsresm.dll,-118 (Fax) - Unknown owner - C:\Windows\system32\fxssvc.exe (file missing)
O23 - Service: Servizio Google Update (gupdate) (gupdate) - Google Inc. - C:\Program Files (x86)\Google\Update\GoogleUpdate.exe
O23 - Service: Servizio Google Update (gupdatem) (gupdatem) - Google Inc. - C:\Program Files (x86)\Google\Update\GoogleUpdate.exe
O23 - Service: Google Software Updater (gusvc) - Google - C:\Program Files (x86)\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: @%SystemRoot%\system32\ieetwcollectorres.dll,-1000 (IEEtwCollectorService) - Unknown owner - C:\Windows\system32\IEEtwCollector.exe (file missing)
O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: Intel(R) Management and Security Application Local Management Service (LMS) - Intel Corporation - C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\LMS\LMS.exe
O23 - Service: Process Monitor (LVPrcS64) - Logitech Inc. - C:\Program Files\Common Files\LogiShrd\LVMVFM\LVPrcSrv.exe
O23 - Service: @comres.dll,-2797 (MSDTC) - Unknown owner - C:\Windows\System32\msdtc.exe (file missing)
O23 - Service: @C:\Program Files (x86)\Nero\Update\NASvc.exe,-200 (NAUpdate) - Nero AG - C:\Program Files (x86)\Nero\Update\NASvc.exe
O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: NVIDIA Network Service (NvNetworkService) - NVIDIA Corporation - C:\Program Files (x86)\NVIDIA Corporation\NetService\NvNetworkService.exe
O23 - Service: NVIDIA Streamer Service (NvStreamSvc) - NVIDIA Corporation - C:\Program Files\NVIDIA Corporation\NvStreamSrv\nvstreamsvc.exe
O23 - Service: NVIDIA Display Driver Service (nvsvc) - Unknown owner - C:\Windows\system32\nvvsvc.exe (file missing)
O23 - Service: PnkBstrA - Unknown owner - C:\Windows\system32\PnkBstrA.exe
O23 - Service: @%systemroot%\system32\psbase.dll,-300 (ProtectedStorage) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @%systemroot%\system32\Locator.exe,-2 (RpcLocator) - Unknown owner - C:\Windows\system32\locator.exe (file missing)
O23 - Service: @%SystemRoot%\system32\samsrv.dll,-1 (SamSs) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: Skype Updater (SkypeUpdate) - Skype Technologies - C:\Program Files (x86)\Skype\Updater\Updater.exe
O23 - Service: @%SystemRoot%\system32\snmptrap.exe,-3 (SNMPTRAP) - Unknown owner - C:\Windows\System32\snmptrap.exe (file missing)
O23 - Service: @%systemroot%\system32\spoolsv.exe,-1 (Spooler) - Unknown owner - C:\Windows\System32\spoolsv.exe (file missing)
O23 - Service: @%SystemRoot%\system32\sppsvc.exe,-101 (sppsvc) - Unknown owner - C:\Windows\system32\sppsvc.exe (file missing)
O23 - Service: NVIDIA Stereoscopic 3D Driver Service (Stereo Service) - NVIDIA Corporation - C:\Program Files (x86)\NVIDIA Corporation\3D Vision\nvSCPAPISvr.exe
O23 - Service: @%SystemRoot%\system32\ui0detect.exe,-101 (UI0Detect) - Unknown owner - C:\Windows\system32\UI0Detect.exe (file missing)
O23 - Service: Intel(R) Management and Security Application User Notification Service (UNS) - Intel Corporation - C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\UNS\UNS.exe
O23 - Service: @%SystemRoot%\system32\vaultsvc.dll,-1003 (VaultSvc) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: @%SystemRoot%\system32\vds.exe,-100 (vds) - Unknown owner - C:\Windows\System32\vds.exe (file missing)
O23 - Service: @%systemroot%\system32\vssvc.exe,-102 (VSS) - Unknown owner - C:\Windows\system32\vssvc.exe (file missing)
O23 - Service: @%SystemRoot%\system32\Wat\WatUX.exe,-601 (WatAdminSvc) - Unknown owner - C:\Windows\system32\Wat\WatAdminSvc.exe (file missing)
O23 - Service: @%systemroot%\system32\wbengine.exe,-104 (wbengine) - Unknown owner - C:\Windows\system32\wbengine.exe (file missing)
O23 - Service: @%Systemroot%\system32\wbem\wmiapsrv.exe,-110 (wmiApSrv) - Unknown owner - C:\Windows\system32\wbem\WmiApSrv.exe (file missing)
O23 - Service: @%PROGRAMFILES%\Windows Media Player\wmpnetwk.exe,-101 (WMPNetworkSvc) - Unknown owner - C:\Program Files (x86)\Windows Media Player\wmpnetwk.exe (file missing)

--
End of file - 11459 bytes

HijackThis non è compatibile con i S.O a 64 bit.
Questo è il motivo per cui sforna risultati sbagliati.

Puoi usare OTL.
Le istruzioni per scaricarlo e per l'uso le trovi in questo link:
http://forum.aiutamici.com/yaf_postst90814_Guida-per-eliminare-le-pagine-pubblicitarie-SOLO-LETTURA.aspx