ciao a tutti
quando apro i browser (chrome, mozilla, explorer) si apre sempre la pagina http://safesurfs.net e non riesco ad eliminare questa pagina.
Inoltre McAffe segnala che il sito potrevve essere pericoloso.
Sia la scansione antivirus di McAffe, quella di Malwarebytes Anti-Malware e quella adwcleaner non hanno segnalato problemi.

potete darmi qualche suggerimento?
grazie
buona domenica e buon ferragosto

Logfile of Trend Micro HijackThis v2.0.5
Scan saved at 13:44:49, on 14/08/2016
Platform: Unknown Windows (WinNT 6.02.1008)
MSIE: Internet Explorer v11.0 (11.00.9600.18123)

FIREFOX: 47.0.1 (x86 it)
Boot mode: Normal

Running processes:
C:\Program Files (x86)\ASUS\Splendid\ACMON.exe
C:\Program Files (x86)\ASUS\Splendid\ColorUService.exe
C:\Program Files (x86)\NVIDIA Corporation\Update Core\NvBackend.exe
C:\Program Files (x86)\Mozilla Firefox\firefox.exe
C:\Program Files (x86)\IObit\Advanced SystemCare\ASCTray.exe
C:\Program Files (x86)\ASUS\WebStorage\2.1.10.398\ASUSWSLoader.exe
C:\Program Files (x86)\Common Files\Java\Java Update\jusched.exe
C:\Users\ANDREA\AppData\Local\Temp\7zO6B01.tmp\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://asus13.msn.com/?pc=ASJB
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 = about:blank
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 = 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
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,AutoConfigURL = http://stoppblock.org/wpad.dat?6899740013114241a5e06ba16c9b440414362602
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
F2 - REG:system.ini: UserInit=userinit.exe,
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files (x86)\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Java(tm) Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files (x86)\Java\jre1.8.0_71\bin\ssv.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files (x86)\Java\jre1.8.0_71\bin\jp2ssv.dll
O4 - HKLM\..\Run: [ASUSPRP] "C:\Program Files (x86)\ASUS\APRP\APRP.EXE"
O4 - HKLM\..\Run: [WebStorage] C:\Program Files (x86)\ASUS\WebStorage\2.1.10.398\ASUSWSLoader.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files (x86)\Common Files\Java\Java Update\jusched.exe"
O4 - HKCU\..\Run: [FBackup 5 Tray Agent] "C:\Program Files (x86)\Softland\FBackup 5\bTray.exe"
O4 - HKCU\..\Run: [Skype] "C:\Program Files (x86)\Skype\Phone\Skype.exe" /minimized /regrun
O4 - HKCU\..\Run: [Advanced SystemCare 9] "C:\Program Files (x86)\IObit\Advanced SystemCare\ASCTray.exe" /Auto
O4 - HKUS\S-1-5-18\..\Run: [GarminExpressTrayApp] "C:\Program Files (x86)\Garmin\Express Tray\ExpressTray.exe" (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [GarminExpressTrayApp] "C:\Program Files (x86)\Garmin\Express Tray\ExpressTray.exe" (User 'Default user')
O4 - Global Startup: FAH.lnk = C:\Program Files\WinZip\FAH\FAHConsole.exe
O4 - Global Startup: WinZip Preloader.lnk = C:\Program Files\WinZip\WzPreloader.exe
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~2\MICROS~1\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~2\MICROS~1\OFFICE11\REFIEBAR.DLL
O11 - Options group: [ACCELERATED_GRAPHICS] Accelerated graphics
O17 - HKLM\System\CCS\Services\Tcpip\..\{5C8B989B-B21F-4A10-A43B-149B9887023F}: NameServer = 8.8.8.8,8.8.4.4,4.2.2.1,4.2.2.2,208.67.222.222,208.67.220.220,8.26.56.26,8.20.247.20,156.154.70.1,156.154.71.1
O18 - Protocol: dssrequest - {5513F07E-936B-4E52-9B00-067394E91CC5} - c:\PROGRA~2\mcafee\SITEAD~1\mcieplg.dll
O18 - Protocol: sacore - {5513F07E-936B-4E52-9B00-067394E91CC5} - c:\PROGRA~2\mcafee\SITEAD~1\mcieplg.dll
O18 - Protocol: wlpg - {E43EF6CD-A37A-4A9B-9E6F-83F89B8E6324} - C:\Program Files (x86)\Windows Live\Photo Gallery\AlbumDownloadProtocolHandler.dll
O18 - Filter: application/x-mfe-ipt - {3EF5086B-5478-4598-A054-786C45D75692} - c:\PROGRA~2\mcafee\msc\mcsniepl.dll
O23 - Service: McAfee Application Installer Cleanup (0133551470248650) (0133551470248650mcinstcleanup) - Unknown owner - C:\Windows\TEMP\013355~1.EXE (file missing)
O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing)
O23 - Service: ASLDR Service (ASLDRService) - ASUSTek Computer Inc. - C:\Program Files (x86)\ASUS\ATK Package\ATK Hotkey\ASLDRSrv.exe
O23 - Service: ASUS FaceID Service - Hanwang Technology Co.,Ltd. - C:\Program Files\ASUS\ASUS FaceID\HWFaceKeyService.exe
O23 - Service: ATKGFNEX Service (ATKGFNEXSrv) - ASUS - C:\Program Files (x86)\ASUS\ATK Package\ATKGFNEX\GFNEXSrv.exe
O23 - Service: Intel(R) Content Protection HECI Service (cphs) - Intel Corporation - C:\Windows\SysWow64\IntelCpHeciSvc.exe
O23 - Service: @oem11.inf,%WIN32_DPTF_PARTICIPANT_PROC_SERVICE_DISPLAY_NAME%;Intel(R) Dynamic Platform and Thermal Framework Processor Participant Service Application (DptfParticipantProcessorService) - Unknown owner - C:\Windows\system32\DptfParticipantProcessorService.exe (file missing)
O23 - Service: @oem11.inf,%WIN32_DPTF_POLICY_CONFIGTDP_SERVICE_DISPLAY_NAME%;Intel(R) Dynamic Platform and Thermal Framework Config TDP Service Application (DptfPolicyConfigTDPService) - Unknown owner - C:\Windows\system32\DptfPolicyConfigTDPService.exe (file missing)
O23 - Service: @oem11.inf,%WIN32_DPTF_POLICY_CRITICAL_SERVICE_DISPLAY_NAME%;Intel(R) Dynamic Platform and Thermal Framework Critical Service Application (DptfPolicyCriticalService) - Unknown owner - C:\Windows\system32\DptfPolicyCriticalService.exe (file missing)
O23 - Service: @oem11.inf,%WIN32_DPTF_POLICY_LPM_SERVICE_DISPLAY_NAME%;Intel(R) Dynamic Platform and Thermal Framework Low Power Mode Service Application (DptfPolicyLpmService) - Unknown owner - C:\Windows\system32\DptfPolicyLpmService.exe (file missing)
O23 - Service: @%SystemRoot%\system32\efssvc.dll,-100 (EFS) - Unknown owner - C:\Windows\System32\lsass.exe (file missing)
O23 - Service: ExpressCache - Condusiv Technologies - C:\Program Files\Condusiv Technologies\ExpressCache\ExpressCache.exe
O23 - Service: @%systemroot%\system32\fxsresm.dll,-118 (Fax) - Unknown owner - C:\Windows\system32\fxssvc.exe (file missing)
O23 - Service: NVIDIA GeForce Experience Service (GfExperienceService) - NVIDIA Corporation - C:\Program Files\NVIDIA Corporation\GeForce Experience Service\GfExperienceService.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: McAfee Home Network (HomeNetSvc) - McAfee, Inc. - C:\Program Files\Common Files\McAfee\Platform\McSvcHost\McSvHost.exe
O23 - Service: @%SystemRoot%\system32\ieetwcollectorres.dll,-1000 (IEEtwCollectorService) - Unknown owner - C:\Windows\system32\IEEtwCollector.exe (file missing)
O23 - Service: Intel(R) HD Graphics Control Panel Service (igfxCUIService1.0.0.0) - Unknown owner - C:\Windows\system32\igfxCUIService.exe (file missing)
O23 - Service: Intel(R) Capability Licensing Service TCP IP Interface - Intel(R) Corporation - C:\Program Files\Intel\iCLS Client\SocketHeciServer.exe
O23 - Service: Intel(R) ME Service - Intel Corporation - C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\FWService\IntelMeFWService.exe
O23 - Service: Intel(R) Dynamic Application Loader Host Interface Service (jhi_service) - Intel Corporation - C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL\jhi_service.exe
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: McAfee SiteAdvisor Service - McAfee, Inc. - C:\Program Files (x86)\McAfee\SiteAdvisor\McSACore.exe
O23 - Service: McAfee AP Service (McAPExe) - McAfee, Inc. - C:\Program Files\McAfee\MSC\McAPExe.exe
O23 - Service: McAfee Boot Delay Start Service (McBootDelayStartSvc) - McAfee, Inc. - C:\Program Files\Common Files\McAfee\Platform\McSvcHost\McSvHost.exe
O23 - Service: McAfee Personal Firewall Service (McMPFSvc) - McAfee, Inc. - C:\Program Files\Common Files\McAfee\Platform\McSvcHost\McSvHost.exe
O23 - Service: McAfee VirusScan Announcer (McNaiAnn) - McAfee, Inc. - C:\Program Files\Common Files\McAfee\Platform\McSvcHost\McSvHost.exe
O23 - Service: McAfee Scanner (McODS) - McAfee, Inc. - C:\Program Files\McAfee\VirusScan\mcods.exe
O23 - Service: McAfee Platform Services (mcpltsvc) - McAfee, Inc. - C:\Program Files\Common Files\McAfee\Platform\McSvcHost\McSvHost.exe
O23 - Service: McAfee Proxy Service (McProxy) - McAfee, Inc. - C:\Program Files\Common Files\McAfee\Platform\McSvcHost\McSvHost.exe
O23 - Service: McAfee Firewall Core Service (mfefire) - McAfee, Inc. - C:\Program Files\Common Files\McAfee\SystemCore\\mfefire.exe
O23 - Service: McAfee Service Controller (mfemms) - McAfee, Inc. - C:\Program Files\Common Files\McAfee\SystemCore\\mfemms.exe
O23 - Service: McAfee Validation Trust Protection Service (mfevtp) - Unknown owner - C:\Windows\system32\mfevtps.exe (file missing)
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: NVIDIA Network Service (NvNetworkService) - NVIDIA Corporation - C:\Program Files (x86)\NVIDIA Corporation\NetService\NvNetworkService.exe
O23 - Service: NVIDIA Streamer Network Service (NvStreamNetworkSvc) - NVIDIA Corporation - C:\Program Files\NVIDIA Corporation\NvStreamSrv\NvStreamNetworkService.exe
O23 - Service: NVIDIA Streamer Service (NvStreamSvc) - NVIDIA Corporation - C:\Program Files\NVIDIA Corporation\NvStreamSrv\NvStreamService.exe
O23 - Service: NVIDIA Display Driver Service (nvsvc) - Unknown owner - C:\Windows\system32\nvvsvc.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: @%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 - 12908 bytes

Eliminare Safesurf