sono arrivato a casa e mi e' apparso un messaggio in cui la polizia per sbloccarmi il pc vuole che paga 100 euro inpaypal o altro puoi verificare il mio pc che non sia infetto ora vado in modalita' provvisoria...aiutoooooo

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 16.36.25, on 20/07/2012
Platform: Windows Vista SP2 (WinNT 6.00.1906)
MSIE: Internet Explorer v8.00 (8.00.6001.19222)
Boot mode: Safe mode with network support

Running processes:
C:\Windows\Explorer.EXE
C:\Program Files\Windows Media Player\wmpnscfg.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\DAEMON Tools Pro\DTShellHlp.exe
C:\Users\d\Desktop\security e pulizia\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 =
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O1 - Hosts: ÿþ127.0.0.1 localhost
O1 - Hosts: ::1 localhost
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Google Toolbar Helper - {AA58ED58-01DD-4d91-8333-CF10577473F7} - C:\Program Files\Google\Google Toolbar\GoogleToolbar_32.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\5.7.7227.1100\swg.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre6\bin\jp2ssv.dll
O3 - Toolbar: Google Toolbar - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - C:\Program Files\Google\Google Toolbar\GoogleToolbar_32.dll
O4 - HKLM\..\Run: [Apoint] C:\Program Files\DellTPad\Apoint.exe
O4 - HKLM\..\Run: [Persistence] C:\Windows\system32\igfxpers.exe
O4 - HKLM\..\Run: [Broadcom Wireless Manager UI] C:\Windows\system32\WLTRAY.exe
O4 - HKLM\..\Run: [MSC] "c:\Program Files\Microsoft Security Client\msseces.exe" -hide -runkey
O4 - HKLM\..\Run: [ROUTE66Sync] C:\Program Files\ROUTE 66\ROUTE 66 Sync\Sync9Loader.exe -runinbackground
O4 - HKLM\..\Run: [00PCTFW] "C:\Program Files\PC Tools Firewall Plus\FirewallGUI.exe" -s
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [Adobe ARM] "C:\Program Files\Common Files\Adobe\ARM\1.0\AdobeARM.exe"
O4 - HKCU\..\Run: [DAEMON Tools Pro Agent] "C:\Program Files\DAEMON Tools Pro\DTAgent.exe" -autorun
O4 - HKCU\..\Run: [KiesPDLR] C:\Program Files\Samsung\Kies\External\FirmwareUpdate\KiesPDLR.exe
O4 - HKCU\..\Run: [swg] "C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe"
O4 - HKCU\..\Run: [Facebook Update] "C:\Users\d\AppData\Local\Facebook\Update\FacebookUpdate.exe" /c /nocrashserver
O4 - Startup: ctfmon.lnk = C:\Windows\System32\rundll32.exe
O8 - Extra context menu item: Aggiungi a PDF esistente - res://C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: Aggiungi destinazione link a PDF esistente - res://C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEFavClient.dll/AcroIEAppendSelLinks.html
O8 - Extra context menu item: Converti destinazione link in Adobe PDF - res://C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEFavClient.dll/AcroIECaptureSelLinks.html
O8 - Extra context menu item: Converti in Adobe PDF - res://C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEFavClient.dll/AcroIECapture.html
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\COMMON~1\Skype\SKYPE4~1.DLL
O20 - Winlogon Notify: GoToAssist - C:\Program Files\Citrix\GoToAssist\514\G2AWinLogon.dll
O23 - Service: Andrea ST Filters Service (AESTFilters) - Unknown owner - C:\Windows\System32\DriverStore\FileRepository\stwrt.inf_0145da1d\aestsrv.exe (file missing)
O23 - Service: Apple Mobile Device - Unknown owner - C:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe (file missing)
O23 - Service: Bonjour Service - Unknown owner - C:\Program Files\Bonjour\mDNSResponder.exe (file missing)
O23 - Service: GoToAssist - Citrix Online, a division of Citrix Systems, Inc. - C:\Program Files\Citrix\GoToAssist\514\g2aservice.exe
O23 - Service: Servizio di Google Update (gupdate) (gupdate) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Servizio Google Update (gupdatem) (gupdatem) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: Google Software Updater (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Intel(R) Matrix Storage Event Monitor (IAANTMON) - Unknown owner - C:\Program Files\Intel\Intel Matrix Storage Manager\IAANTMon.exe (file missing)
O23 - Service: Servizio iPod (iPod Service) - Unknown owner - C:\Program Files\iPod\bin\iPodService.exe (file missing)
O23 - Service: Mozilla Maintenance Service (MozillaMaintenance) - Mozilla Foundation - C:\Program Files\Mozilla Maintenance Service\maintenanceservice.exe
O23 - Service: PC Tools Firewall Plus (PCToolsFirewallPlus) - PC Tools - C:\Program Files\PC Tools Firewall Plus\FWService.exe
O23 - Service: Macrium Reflect Image Mounting Service (ReflectService) - Unknown owner - C:\Program Files\Macrium\Reflect\ReflectService.exe (file missing)
O23 - Service: Audio Service (STacSV) - Unknown owner - C:\Windows\System32\DriverStore\FileRepository\stwrt.inf_0145da1d\STacSV.exe (file missing)
O23 - Service: stllssvr - MicroVision Development, Inc. - C:\Program Files\Common Files\SureThing Shared\stllssvr.exe
O23 - Service: SwitchBoard - Adobe Systems Incorporated - C:\Program Files\Common Files\Adobe\SwitchBoard\SwitchBoard.exe
O23 - Service: Dell Wireless WLAN Tray Service (wltrysvc) - Unknown owner - C:\Windows\System32\WLTRYSVC.EXE (file missing)
O23 - Service: Marvell Yukon Service (yksvc) - Unknown owner - RUNDLL32.EXE (file missing)

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End of file - 6250 bytes

Ho letto nell'altro topic che hai risolto col virus polizia.
Questo log lo devi aver fatto prima, rifallo e controlla se c'è ancora questa voce:

O4 - Startup: ctfmon.lnk = C:\Windows\System32\rundll32.exe
Se c'è ancora, eliminala. Ciao