ciao, premetto che ho già letto un topic di questi sull'argomento e penso di aver capito piu o meno di cosa parliamo. ho aperto questo topic con la speranza che tu possa aiutarmi copiandoti il mio log. penso di avere un ulteriore problema perche quando faccio la scansione si blocca e mi dice che per qualche ragione il sistema nega l'accesso al file hosts presente in C:\Windows\System32\drivers\etc\hosts in quanto se è presente hijackthis non puo fixarlo, mi chiede di entrare, find the line(s) hijackthis reports and delete them(?). salva il file 'host'(with quotes) e riavvia.
la scansione è questa


Logfile of Trend Micro HijackThis v2.0.5
Scan saved at 01:06:54, on 15/07/2013
Platform: Windows 7 SP1 (WinNT 6.00.3505)
MSIE: Internet Explorer v9.00 (9.00.8112.16496)

FIREFOX: 22.0 (it)
Boot mode: Normal

Running processes:
C:\Program Files (x86)\HP SimplePass 2011\TouchControl.exe
C:\Program Files (x86)\HP SimplePass 2011\BioMonitor.exe
C:\Program Files (x86)\CyberLink\YouCam\YCMMirage.exe
C:\Program Files (x86)\AVG\AVG2013\avgui.exe
C:\Users\Utente\Downloads\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://go.microsoft.com/fwlink/?LinkId=69157
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://g.uk.msn.com/HPCON/6
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = C:\Windows\SysWOW64\blank.htm
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
R3 - URLSearchHook: (no name) - {4ae0c3d6-f713-4eed-bc65-25dc3ffdaac1} - (no file)
O2 - BHO: Groove GFS Browser Helper - {72853161-30C5-4D22-B7F9-0BBC1D38A37E} - C:\PROGRA~2\MICROS~1\Office14\GROOVEEX.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: TSBHO Class - {8590886E-EC8C-43C1-A32C-E4C2B0B6395B} - C:\Program Files (x86)\HP SimplePass 2011\IEBHO.dll
O2 - BHO: Guida per l'accesso a Windows Live ID - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: Searchqu Toolbar - {99079a25-328f-4bd4-be04-00955acaa0a7} - C:\PROGRA~2\WIA6EB~1\Datamngr\ToolBar\searchqudtx.dll
O2 - BHO: SearchCore for Browsers - {9D717F81-9148-4f12-8568-69135F087DB0} - C:\PROGRA~2\SEARCH~2\SEARCH~1\BROWSE~1.DLL
O2 - BHO: URLRedirectionBHO - {B4F3A835-0E21-4959-BA22-42B3008E02FF} - C:\PROGRA~2\MICROS~1\Office14\URLREDIR.DLL
O2 - BHO: Bing Bar Helper - {d2ce3e00-f94a-4740-988e-03dc2f38c34f} - C:\Program Files (x86)\Microsoft\BingBar\7.1.361.0\BingExt.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: HP Network Check Helper - {E76FD755-C1BA-4DCB-9F13-99BD91223ADE} - C:\Program Files (x86)\Hewlett-Packard\HP Support Framework\Resources\HPNetworkCheck\HPNetworkCheckPlugin.dll
O3 - Toolbar: Bing Bar - {8dcb7100-df86-4384-8842-8fa844297b3f} - "C:\Program Files (x86)\Microsoft\BingBar\7.1.361.0\BingExt.dll" (file missing)
O3 - Toolbar: Searchqu Toolbar - {99079a25-328f-4bd4-be04-00955acaa0a7} - C:\PROGRA~2\WIA6EB~1\Datamngr\ToolBar\searchqudtx.dll
O4 - HKLM\..\Run: [SsroService] C:\Users\Public\Documents\Application\CurrentFile\ssadl.exe
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~2\MICROS~1\Office14\EXCEL.EXE/3000
O8 - Extra context menu item: Invia immagine alla periferica &Bluetooth... - C:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie_ctx.htm
O8 - Extra context menu item: Invia pagina alla periferica &Bluetooth... - C:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie.htm
O9 - Extra button: @C:\Program Files (x86)\Windows Live\Writer\WindowsLiveWriterShortcuts.dll,-1004 - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files (x86)\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: @C:\Program Files (x86)\Windows Live\Writer\WindowsLiveWriterShortcuts.dll,-1003 - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Program Files (x86)\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: @C:\Program Files (x86)\Hewlett-Packard\HP Support Framework\Resources\HPNetworkCheck\HPNetworkCheckPlugin.dll,-103 - {25510184-5A38-4A99-B273-DCA8EEF6CD08} - C:\Program Files (x86)\Hewlett-Packard\HP Support Framework\Resources\HPNetworkCheck\NCLauncherFromIE.exe
O9 - Extra 'Tools' menuitem: @C:\Program Files (x86)\Hewlett-Packard\HP Support Framework\Resources\HPNetworkCheck\HPNetworkCheckPlugin.dll,-102 - {25510184-5A38-4A99-B273-DCA8EEF6CD08} - C:\Program Files (x86)\Hewlett-Packard\HP Support Framework\Resources\HPNetworkCheck\NCLauncherFromIE.exe
O9 - Extra button: PokerStars.it - {C4046502-6524-4d87-896C-878F57D1FF07} - C:\Program Files (x86)\PokerStars.IT\PokerStarsUpdate.exe (file missing)
O9 - Extra button: Invia a Bluetooth - {CCA281CA-C863-46ef-9331-5C8D4460577F} - C:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie.htm
O9 - Extra 'Tools' menuitem: Invia a periferica &Bluetooth... - {CCA281CA-C863-46ef-9331-5C8D4460577F} - C:\Program Files\WIDCOMM\Bluetooth Software\btsendto_ie.htm
O10 - Unknown file in Winsock LSP: c:\program files (x86)\common files\microsoft shared\windows live\wlidnsp.dll
O10 - Unknown file in Winsock LSP: c:\program files (x86)\common files\microsoft shared\windows live\wlidnsp.dll
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - C:\Program Files (x86)\AVG\AVG2012\avgpp.dll (file missing)
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~2\COMMON~1\Skype\SKYPE4~1.DLL
O18 - Protocol: wlpg - {E43EF6CD-A37A-4A9B-9E6F-83F89B8E6324} - C:\Program Files (x86)\Windows Live\Photo Gallery\AlbumDownloadProtocolHandler.dll
O18 - Filter hijack: text/xml - {807573E5-5146-11D5-A672-00B0D022E945} - C:\Program Files (x86)\Common Files\Microsoft Shared\OFFICE14\MSOXMLMF.DLL
O20 - AppInit_DLLs: C:\PROGRA~2\SEARCH~2\SEARCH~1\datamngr.dll C:\PROGRA~2\SEARCH~2\SEARCH~1\IEBHO.dll
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: Andrea ST Filters Service (AESTFilters) - Andrea Electronics Corporation - C:\Program Files\IDT\WDM\AESTSr64.exe
O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)
O23 - Service: AMD External Events Utility - Unknown owner - C:\Windows\system32\atiesrxx.exe (file missing)
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files (x86)\Common Files\Apple\Mobile Device Support\AppleMobileDeviceService.exe
O23 - Service: AVGIDSAgent - AVG Technologies CZ, s.r.o. - C:\Program Files (x86)\AVG\AVG2013\avgidsagent.exe
O23 - Service: AVG WatchDog (avgwd) - AVG Technologies CZ, s.r.o. - C:\Program Files (x86)\AVG\AVG2013\avgwdsvc.exe
O23 - Service: Servizio Bonjour (Bonjour Service) - Apple Inc. - C:\Program Files (x86)\Bonjour\mDNSResponder.exe
O23 - Service: Bluetooth Service (btwdins) - Broadcom Corporation. - C:\Program Files\WIDCOMM\Bluetooth Software\btwdins.exe
O23 - Service: @%SystemRoot%\system32\efssvc.dll,-100 (EFS) - Unknown owner - C:\Windows\System32\lsass.exe (file missing)
O23 - Service: Easybits Services for Windows (ezSharedSvc) - EasyBits Software AS - C:\Windows\System32\ezSharedSvcHost.exe
O23 - Service: @%systemroot%\system32\fxsresm.dll,-118 (Fax) - Unknown owner - C:\Windows\system32\fxssvc.exe (file missing)
O23 - Service: TrueSuiteService (FPLService) - HP - C:\Program Files (x86)\HP SimplePass 2011\TrueSuiteService.exe
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: HP Support Assistant Service - Hewlett-Packard Company - C:\Program Files (x86)\Hewlett-Packard\HP Support Framework\hpsa_service.exe
O23 - Service: HP Wireless Assistant Service - Hewlett-Packard Company - C:\Program Files\Hewlett-Packard\HP Wireless Assistant\HPWA_Service.exe
O23 - Service: HP Client Services (HPClientSvc) - Hewlett-Packard Company - C:\Program Files\Hewlett-Packard\HP Client Services\HPClientServices.exe
O23 - Service: HP Software Framework Service (hpqwmiex) - Hewlett-Packard Company - C:\Program Files (x86)\Hewlett-Packard\Shared\hpqWmiEx.exe
O23 - Service: HP Service (hpsrv) - Unknown owner - C:\Windows\system32\Hpservice.exe (file missing)
O23 - Service: HPWMISVC - Hewlett-Packard Development Company, L.P. - C:\Program Files (x86)\Hewlett-Packard\HP Quick Launch\HPWMISVC.exe
O23 - Service: Intel(R) Rapid Storage Technology (IAStorDataMgrSvc) - Intel Corporation - C:\Program Files (x86)\Intel\Intel(R) Rapid Storage Technology\IAStorDataMgrSvc.exe
O23 - Service: IconMan_R - Realsil Microelectronics Inc. - C:\Program Files (x86)\Realtek\Realtek PCIE Card Reader\RIconMan.exe
O23 - Service: Servizio iPod (iPod Service) - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: LightScribeService Direct Disc Labeling Service (LightScribeService) - Hewlett-Packard Company - C:\Program Files (x86)\Common Files\LightScribe\LSSrvc.exe
O23 - Service: LiveUpSC - SoftwareUpdService - C:\Users\Utente\AppData\Local\SoftwareUpdater\SoftwareUpdService.exe
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: Mozilla Maintenance Service (MozillaMaintenance) - Mozilla Foundation - C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe
O23 - Service: @comres.dll,-2797 (MSDTC) - Unknown owner - C:\Windows\System32\msdtc.exe (file missing)
O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\Windows\system32\lsass.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 6\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: Ssro Service (SsroService) - SsroService - C:\Users\Utente\AppData\Local\ServiceManager\ssro.exe
O23 - Service: Ssupd Service (SsupdService) - SsupdService - C:\Users\Utente\AppData\Local\ssupd\ssupd.exe
O23 - Service: @%SystemRoot%\system32\stlang64.dll,-10101 (STacSV) - IDT, Inc. - C:\Program Files\IDT\WDM\STacSV64.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 - 12838 bytes

Ciao e benvenuto nel forum. Hai i soliti dirottatori e le toolbar.

Per quanto riguarda HJT con seven bisogna cliccare col tasto destro sull'icona del programma e scegliere "esegui come Amministratore"

Chiudi tutti i programmi e disconnesso lanci HJT e clicca sul secondo pulsante: Do a system scan only poi metti la spunta alle voci che ti indico e alla fine clic su Fix checked:

R3 - URLSearchHook: (no name) - {4ae0c3d6-f713-4eed-bc65-25dc3ffdaac1} - (no file)

O2 - BHO: Searchqu Toolbar - {99079a25-328f-4bd4-be04-00955acaa0a7} - C:\PROGRA~2\WIA6EB~1\Datamngr\ToolBar\searchqudtx.dll

O2 - BHO: SearchCore for Browsers - {9D717F81-9148-4f12-8568-69135F087DB0} - C:\PROGRA~2\SEARCH~2\SEARCH~1\BROWSE~1.DLL

O2 - BHO: Bing Bar Helper - {d2ce3e00-f94a-4740-988e-03dc2f38c34f} - C:\Program Files (x86)\Microsoft\BingBar\7.1.361.0\BingExt.dll

O3 - Toolbar: Bing Bar - {8dcb7100-df86-4384-8842-8fa844297b3f} - "C:\Program Files (x86)\Microsoft\BingBar\7.1.361.0\BingExt.dll" (file missing)

O3 - Toolbar: Searchqu Toolbar - {99079a25-328f-4bd4-be04-00955acaa0a7} - C:\PROGRA~2\WIA6EB~1\Datamngr\ToolBar\searchqudtx.dll

O4 - HKLM\..\Run: [SsroService] C:\Users\Public\Documents\Application\CurrentFile\ssadl.exe

O9 - Extra button: PokerStars.it - {C4046502-6524-4d87-896C-878F57D1FF07} - C:\Program Files (x86)\PokerStars.IT\PokerStarsUpdate.exe (file missing)

Occorre disabilitare dei servizi: in win 7: clicca sul pulsante “Start“, digita “services.msc“, preme il tasto Invio, nella lista dei servizi cerca queste voci:
LiveUpSC - SoftwareUpdService - Ssro Service (SsroService) - Ssupd Service (SsupdService) su ogni voce fai doppio clic e nella finestra seguente in tipo di Avvio metti Disabilitato, ok esci.

Poi fai questa scansione:
Scarica Adwcleaner sul desktop:
http://general-changelog-team.fr/en/downloads/finish/20-outils-de-xplode/2-adwcleaner
Avvialo e clicca sul pulsante "Elimina", non cliccare su Cerca.
Conferma con OK le varie finestre che ti compariranno.
Il pc si riavvierà, e uscirà il log con le eliminazioni.
Postalo qui.

Poi fai una pulizia con Ccleaner compreso il Registro, per il Registro spunta tutte le voci acconsenti al backup quando richiesto, sempre in Ccleaner vai in Strumenti Ripristino Sistema seleziona tutte le voci tranne l'ultima che non è selezionabile e rimane per sicurezza, poi clic su Rimuovi.

Vai nei browser che usi e controlla che la pagina iniziale non sia stata modificata, eventualmente ripristina l'originale.
Fai sapere ciao