Buonasera,
sono nuovo del forum e innanzitutto vi ringrazio della vostra assistenza!
Ho visto su un altra pagina di questo forum (Come-eliminare-adfocus) la procedura da seguire per eliminare questo maledetto redirect verso la pagina Adfoc.us.
Ho anche capito di dover aprire un'altra pagina per ricevere la vostra gentile assistenza, visto che mi sta davvero facendo impazzire!

Dunque, ho effettuato come da procedura, e vi posto di seguito i logs di tutti i programmi usati:

Malwarebytes Anti-Malware
www.malwarebytes.org

Scan Date: 14/12/2014
Scan Time: 22:44:51
Logfile:
Administrator: Yes

Version: 2.00.4.1028
Malware Database: v2014.12.14.07
Rootkit Database: v2014.12.08.03
License: Trial
Malware Protection: Enabled
Malicious Website Protection: Enabled
Self-protection: Disabled

OS: Windows 8.1
CPU: x64
File System: NTFS
User: Parlos

Scan Type: Threat Scan
Result: Completed
Objects Scanned: 333878
Time Elapsed: 29 min, 55 sec

Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Disabled
Heuristics: Enabled
PUP: Enabled
PUM: Enabled

Processes: 0
(No malicious items detected)

Modules: 0
(No malicious items detected)

Registry Keys: 0
(No malicious items detected)

Registry Values: 0
(No malicious items detected)

Registry Data: 0
(No malicious items detected)

Folders: 0
(No malicious items detected)

Files: 0
(No malicious items detected)

Physical Sectors: 0
(No malicious items detected)


(end)

AdwCleaner

# AdwCleaner v4.105 - Rapporto creato 14/12/2014 in 23:34:16
# Aggiornato 08/12/2014 di Xplode
# Database : 2014-12-13.4 [Live]
# Sistema operativo : Windows 8.1 (64 bits)
# Nome utente : Parlos - PARLOS2
# In esecuzione da : C:\Users\Parlos\Downloads\AdwCleaner(1).exe
# Opzione : Pulisci

***** [ Servizi ] *****


***** [ File / Cartelle ] *****


***** [ Compiti ] *****


***** [ Collegamenti ] *****


***** [ Registro ] *****


***** [ Browser ] *****

-\\ Internet Explorer v11.0.9600.17416


-\\ Mozilla Firefox v34.0.5 (x86 it)


-\\ Google Chrome v39.0.2171.95


*************************

AdwCleaner[R0].txt - [4297 octets] - [14/12/2014 22:14:29]
AdwCleaner[R1].txt - [898 octets] - [14/12/2014 23:27:39]
AdwCleaner[S0].txt - [4233 octets] - [14/12/2014 22:17:05]
AdwCleaner[S1].txt - [817 octets] - [14/12/2014 23:34:16]

########## EOF - C:\AdwCleaner\AdwCleaner[S1].txt - [876 octets] ##########


Junkware Removal Tool

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Junkware Removal Tool (JRT) by Thisisu
Version: 6.4.0 (11.29.2014:1)
OS: Windows 8.1 x64
Ran by Parlos on 14/12/2014 at 23:40:03,69
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~




~~~ Services



~~~ Registry Values



~~~ Registry Keys



~~~ Files

Successfully deleted: [File] C:\Windows\Tasks\DriverToolkit Autorun.job
Successfully deleted: [File] C:\Windows\prefetch\DRIVERTOOLKIT.EXE-0EC65877.pf



~~~ Folders



~~~ FireFox

Emptied folder: C:\Users\Parlos\AppData\Roaming\mozilla\firefox\profiles\vmxqq3n4.default\minidumps [22 files]



~~~ Event Viewer Logs were cleared





~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Scan was completed on 14/12/2014 at 23:47:39,18
End of JRT log
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

HijackThis

Logfile of Trend Micro HijackThis v2.0.5
Scan saved at 23:49:54, on 14/12/2014
Platform: Unknown Windows (WinNT 6.02.1008)
MSIE: Internet Explorer v11.0 (11.00.9600.17416)

FIREFOX: 34.0.5 (x86 it)
Boot mode: Normal

Running processes:
C:\Program Files (x86)\Malwarebytes Anti-Malware\mbam.exe
C:\Program Files (x86)\DriverToolkit\DriverToolkit.exe
C:\Program Files (x86)\CyberLink\Power2Go8\CLMLSvc_P2G8.exe
C:\Program Files (x86)\Avira\AntiVir Desktop\avgnt.exe
C:\Program Files (x86)\Spybot - Search & Destroy 2\SDTray.exe
C:\Program Files (x86)\Avira\My Avira\Avira.OE.Systray.exe
C:\Windows\SysWOW64\notepad.exe
C:\Program Files (x86)\Mozilla Firefox\firefox.exe
C:\Users\Parlos\Downloads\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://g.uk.msn.com/HPCOM14/11
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/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://g.uk.msn.com/HPCOM14/11
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 = about:blank
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 =
F2 - REG:system.ini: UserInit=userinit.exe
O2 - BHO: Lync Click to Call BHO - {31D09BA0-12F5-4CCE-BE8A-2923E76605DA} - C:\Program Files (x86)\Microsoft Office\Office15\OCHelper.dll
O2 - BHO: Microsoft SkyDrive Pro Browser Helper - {D0498E0A-45B7-42AE-A9AA-ABA463DBD3BF} - C:\PROGRA~2\MICROS~1\Office15\GROOVEEX.DLL
O4 - HKLM\..\Run: [YouCam Service] "C:\Program Files (x86)\CyberLink\YouCam\YouCamService.exe" /s
O4 - HKLM\..\Run: [avgnt] "C:\Program Files (x86)\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKLM\..\Run: [SDTray] "C:\Program Files (x86)\Spybot - Search & Destroy 2\SDTray.exe"
O4 - HKLM\..\Run: [Adobe Creative Cloud] "C:\Program Files (x86)\Adobe\Adobe Creative Cloud\ACC\Creative Cloud.exe" --showwindow=false --onOSstartup=true
O4 - HKLM\..\Run: [Avira Systray] C:\Program Files (x86)\Avira\My Avira\Avira.OE.Systray.exe
O4 - HKLM\..\Run: [HP Software Update] C:\Program Files (x86)\Hp\HP Software Update\HPWuSchd2.exe
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files (x86)\iTunes\iTunesHelper.exe"
O4 - HKCU\..\Run: [HP Deskjet 3050 J610 series (NET)] "C:\Program Files\HP\HP Deskjet 3050 J610 series\Bin\ScanToPCActivationApp.exe" -deviceID "CN0AB2B0J005HX:NW" -scfn "HP Deskjet 3050 J610 series (NET)" -AutoStart 1
O4 - Startup: Monitora avvisi inchiostro - HP Deskjet 3050 J610 series (Rete).lnk = ?
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~1\Office15\EXCEL.EXE/3000
O8 - Extra context menu item: Free YouTube to MP3 Converter - C:\Program Files (x86)\Common Files\DVDVideoSoft\plugins\freeytmp3downloader.htm
O8 - Extra context menu item: I&nvia a OneNote - res://C:\PROGRA~1\MICROS~1\Office15\ONBttnIE.dll/105
O9 - Extra button: HP Smart Print - {22CC3EBD-C286-43aa-B8E6-06B115F74162} - C:\Program Files (x86)\Hewlett-Packard\Smart Print 2.0\smartprintsetup.exe
O9 - Extra 'Tools' menuitem: HP Smart Print - {22CC3EBD-C286-43aa-B8E6-06B115F74162} - C:\Program Files (x86)\Hewlett-Packard\Smart Print 2.0\smartprintsetup.exe
O9 - Extra button: Invia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\Program Files (x86)\Microsoft Office\Office15\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: I&nvia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\Program Files (x86)\Microsoft Office\Office15\ONBttnIE.dll
O9 - Extra button: Lync - Chiamata con un clic - {31D09BA0-12F5-4CCE-BE8A-2923E76605DA} - C:\Program Files (x86)\Microsoft Office\Office15\OCHelper.dll
O9 - Extra 'Tools' menuitem: Lync - Chiamata con un clic - {31D09BA0-12F5-4CCE-BE8A-2923E76605DA} - C:\Program Files (x86)\Microsoft Office\Office15\OCHelper.dll
O9 - Extra button: &Note collegate di OneNote - {789FE86F-6FC4-46A1-9849-EDE0DB0C95CA} - C:\Program Files (x86)\Microsoft Office\Office15\ONBttnIELinkedNotes.dll
O9 - Extra 'Tools' menuitem: &Note collegate di OneNote - {789FE86F-6FC4-46A1-9849-EDE0DB0C95CA} - C:\Program Files (x86)\Microsoft Office\Office15\ONBttnIELinkedNotes.dll
O9 - Extra button: Skype Click to Call settings - {898EA8C8-E7FF-479B-8935-AEC46303B9E5} - C:\Program Files (x86)\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O17 - HKLM\System\CCS\Services\Tcpip\..\{AD57DF84-658C-4579-9935-00D6EE55FC5F}: NameServer = 8.8.8.8,8.8.4.4
O18 - Protocol: osf - {D924BDC6-C83A-4BD5-90D0-095128A113D1} - C:\Program Files (x86)\Microsoft Office\Office15\MSOSB.DLL
O18 - Protocol: skypec2c - {91774881-D725-4E58-B298-07617B9B86A8} - C:\Program Files (x86)\Skype\Toolbars\Internet Explorer\SkypeIEPlugin.dll
O18 - Protocol: wlpg - {E43EF6CD-A37A-4A9B-9E6F-83F89B8E6324} - C:\Program Files (x86)\Windows Live\Photo Gallery\AlbumDownloadProtocolHandler.dll
O18 - Filter hijack: text/xml - {807583E5-5146-11D5-A672-00B0D022E945} - C:\Program Files (x86)\Common Files\Microsoft Shared\OFFICE15\MSOXMLMF.DLL
O20 - Winlogon Notify: SDWinLogon - SDWinLogon.dll (file missing)
O23 - Service: Adobe Flash Player Update Service (AdobeFlashPlayerUpdateSvc) - Adobe Systems Incorporated - C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
O23 - Service: Andrea RT Filters Service (AERTFilters) - Andrea Electronics Corporation - C:\Program Files\Realtek\Audio\HDA\AERTSr64.EXE
O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)
O23 - Service: Avira Pianificatore (AntiVirSchedulerService) - Avira Operations GmbH & Co. KG - C:\Program Files (x86)\Avira\AntiVir Desktop\sched.exe
O23 - Service: Avira Real-Time Protection (AntiVirService) - Avira Operations GmbH & Co. KG - C:\Program Files (x86)\Avira\AntiVir Desktop\avguard.exe
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files (x86)\Common Files\Apple\Mobile Device Support\AppleMobileDeviceService.exe
O23 - Service: AtherosSvc - Windows (R) Win 7 DDK provider - C:\Program Files (x86)\Bluetooth Suite\adminservice.exe
O23 - Service: Avira Service Host (Avira.OE.ServiceHost) - Avira Operations GmbH & Co. KG - C:\Program Files (x86)\Avira\My Avira\Avira.OE.ServiceHost.exe
O23 - Service: BCL EasyConverter SDK 3 Loader (becldr3Service) - Unknown owner - C:\Program Files (x86)\BCL Technologies\easyConverter SDK 3\Common\becldr.exe
O23 - Service: Servizio Bonjour (Bonjour Service) - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: Intel(R) Content Protection HECI Service (cphs) - Intel Corporation - C:\Windows\SysWow64\IntelCpHeciSvc.exe
O23 - Service: CyberLink PowerDVD 12 Media Server Monitor Service - CyberLink - C:\Program Files (x86)\CyberLink\PowerDVD12\Kernel\DMS\CLMSMonitorServicePDVD12.exe
O23 - Service: CyberLink PowerDVD 12 Media Server Service - CyberLink - C:\Program Files (x86)\CyberLink\PowerDVD12\Kernel\DMS\CLMSServerPDVD12.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: Firebird Guardian - DefaultInstance (FirebirdGuardianDefaultInstance) - Firebird Project - C:\Program Files\Firebird\Firebird_2_5\bin\fbguard.exe
O23 - Service: Firebird Server - DefaultInstance (FirebirdServerDefaultInstance) - Firebird Project - C:\Program Files\Firebird\Firebird_2_5\bin\fbserver.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: Intel(R) Integrated Clock Controller Service - Intel(R) ICCS (ICCS) - Intel Corporation - C:\Program Files (x86)\Intel\Intel(R) Integrated Clock Controller Service\ICCProxy.exe
O23 - Service: @%SystemRoot%\system32\ieetwcollectorres.dll,-1000 (IEEtwCollectorService) - Unknown owner - C:\Windows\system32\IEEtwCollector.exe (file missing)
O23 - Service: Intel(R) Capability Licensing Service Interface - Intel(R) Corporation - C:\Program Files\Intel\TXE Components\TCS\HeciServer.exe
O23 - Service: Intel(R) Capability Licensing Service TCP IP Interface - Intel(R) Corporation - C:\Program Files\Intel\TXE Components\TCS\SocketHeciServer.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: MBAMScheduler - Malwarebytes Corporation - C:\Program Files (x86)\Malwarebytes Anti-Malware\mbamscheduler.exe
O23 - Service: MBAMService - Malwarebytes Corporation - C:\Program Files (x86)\Malwarebytes Anti-Malware\mbamservice.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: @%systemroot%\system32\Locator.exe,-2 (RpcLocator) - Unknown owner - C:\Windows\system32\locator.exe (file missing)
O23 - Service: Realtek Audio Service (RtkAudioService) - Realtek Semiconductor - C:\Program Files\Realtek\Audio\HDA\RtkAudioService64.exe
O23 - Service: @%SystemRoot%\system32\samsrv.dll,-1 (SamSs) - Unknown owner - C:\Windows\system32\lsass.exe (file missing)
O23 - Service: Spybot-S&D 2 Scanner Service (SDScannerService) - Safer-Networking Ltd. - C:\Program Files (x86)\Spybot - Search & Destroy 2\SDFSSvc.exe
O23 - Service: Spybot-S&D 2 Updating Service (SDUpdateService) - Safer-Networking Ltd. - C:\Program Files (x86)\Spybot - Search & Destroy 2\SDUpdSvc.exe
O23 - Service: Spybot-S&D 2 Security Center Service (SDWSCService) - Safer-Networking Ltd. - C:\Program Files (x86)\Spybot - Search & Destroy 2\SDWSCSvc.exe
O23 - Service: Service KMSELDI - Unknown owner - C:\Program Files\KMSpico\Service_KMS.exe
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: @%SystemRoot%\system32\ui0detect.exe,-101 (UI0Detect) - Unknown owner - C:\Windows\system32\UI0Detect.exe (file missing)
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\wbengine.exe,-104 (wbengine) - Unknown owner - C:\Windows\system32\wbengine.exe (file missing)
O23 - Service: @%ProgramFiles%\Windows Defender\MpAsDesc.dll,-320 (WdNisSvc) - Unknown owner - C:\Program Files (x86)\Windows Defender\NisSrv.exe (file missing)
O23 - Service: @%ProgramFiles%\Windows Defender\MpAsDesc.dll,-310 (WinDefend) - Unknown owner - C:\Program Files (x86)\Windows Defender\MsMpEng.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 - 12677 bytes

Mi potete aiutare??!

Ciao e benvenuto nel forum.
Le scansioni fatte non hanno trovato niente, da HJT ci sono delle voci da togliere.
Prima cosa controlla in gestione motori di ricerca se vi sono dei motori sconosciuti e li elimini, nel browser controlla che la home page non sia stata modificata, eventualmente corregi.
Sempre nel browser controlla fra i componenti aggiuntivi, estensioni e plugin che non vi siano voci estranee che non hai messo tu.

Questo sw io lo eliminerei serve a ben poco: C:\Program Files (x86)\DriverToolkit\DriverToolkit.exe
alle volte crea impicci, naturalmente a tua discrezione.

Chiudi tutti i programmi e disconnesso da internet,
Lancia HijackThis e clicca sul secondo pulsante Do a system scan only
inserisci il segno di spunta nel quadratino davanti alle righe sotto indicate, una volta seleziona clicca il tasto Fix checked per procedere all'eliminazione, comparirà una finestra clicca su SI per accettare e l'operazione è conclusa.

Ti preciso che eliminando le voci 04, i programmi non vengono toccati ma viene solo disattivato l'Avvio automatico, inutile......basterebbe solo l'antivirus.

Ricorda che Hijackthis deve essere avviato da una cartella a lui dedicata. Solo così Hijackthis creerà copie di backup prima di apportare modifiche.

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://g.uk.msn.com/HPCOM14/11

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://g.uk.msn.com/HPCOM14/11

O4 - HKLM\..\Run: [YouCam Service] "C:\Program Files (x86)\CyberLink\YouCam\YouCamService.exe" /s

O4 - HKLM\..\Run: [Adobe Creative Cloud] "C:\Program Files (x86)\Adobe\Adobe Creative Cloud\ACC\Creative Cloud.exe" --showwindow=false --onOSstartup=true

O4 - HKLM\..\Run: [HP Software Update] C:\Program Files (x86)\Hp\HP Software Update\HPWuSchd2.exe

O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files (x86)\iTunes\iTunesHelper.exe"

O4 - HKCU\..\Run: [HP Deskjet 3050 J610 series (NET)] "C:\Program Files\HP\HP Deskjet 3050 J610 series\Bin\ScanToPCActivationApp.exe" -deviceID "CN0AB2B0J005HX:NW" -scfn "HP Deskjet 3050 J610 series (NET)" -AutoStart 1

Fai una pulizia con Ccleaner compreso il Registro, per il registro spunta tutte le voci, acconsenti al backup quando richiesto.
Prima della pulizia vai nel menu Opzioni- Avanzate e togli la spunta alla voce: Elimina file in windows temp solo se più vecchi di 24 ore.
Vai in c:\windows, cerca la cartella Prefetch e la svuoti.

Prestare molta attenzione ai programmi che si scaricano in particolare quelli Free, controlla sempre che non siano spuntate delle caselle che ti installano sw non richiesti, non scaricare mai le toolbar.

Il problema si dovrebbe risolvere, caso contrario prova a fare un ripristino configurazione del sistema ad una data precedente l'apparire del problema.
Adfoc.us. non è pericoloso è solo uno scocciatore e un dirottatore.
Fai sapere se il pc è a posto o no.