Il pc di mia nipote è molto lento e Avast segnala la presenza di trojan,alcuni li ho rimossi ma continuano ad aprirsi pagine pubblicitarie durante la navigazione.
Per quanto riguarda il Tea Timer ho già provveduto a toglierlo.Grazie.
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 12.15.24, on 24/06/2009
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18372)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\Programmi\COMODO\Firewall\cmdagent.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\svchost.exe
C:\Programmi\Alwil Software\Avast4\aswUpdSv.exe
C:\Programmi\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\Pinnacle\Shared Files\Programs\Remote\Remoterm.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Programmi\COMODO\Firewall\cfp.exe
C:\Programmi\Java\jre6\bin\jusched.exe
C:\Programmi\File comuni\Real\Update_OB\realsched.exe
C:\Programmi\Microsoft Office\Office12\GrooveMonitor.exe
C:\Programmi\Pinnacle\Shared Files\Programs\MediaCenterService\PMC.Service.Main.exe
C:\Programmi\Windows Live\Messenger\MsnMsgr.Exe
C:\Programmi\File comuni\Ahead\Lib\NMBgMonitor.exe
C:\WINDOWS\system32\ctfmon.exe
C:\documents and settings\margherita masetti\impostazioni locali\dati applicazioni\yksim.exe
C:\Programmi\Spybot - Search & Destroy\TeaTimer.exe
C:\Programmi\eMule\emule.exe
C:\Programmi\Nokia\Nokia PC Suite 7\PCSuite.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Programmi\Java\jre6\bin\jqs.exe
C:\Programmi\Pinnacle\MediaServer\Microsoft SQL Server\MSSQL$PINNACLESYS\Binn\sqlservr.exe
C:\WINDOWS\system32\IoctlSvc.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\ups.exe
c:\programmi\pinnacle\shared files\programs\mediaserver\pmshost.exe
C:\Programmi\File comuni\Ahead\Lib\NMIndexingService.exe
C:\Programmi\Alwil Software\Avast4\ashMaiSv.exe
C:\Programmi\File comuni\Ahead\Lib\NMIndexStoreSvr.exe
C:\Programmi\Alwil Software\Avast4\ashWebSv.exe
C:\Programmi\PC Connectivity Solution\ServiceLayer.exe
C:\WINDOWS\System32\wbem\wmiapsrv.exe
C:\Programmi\PC Connectivity Solution\Transports\NclUSBSrv.exe
C:\Programmi\PC Connectivity Solution\Transports\NclRSSrv.exe
C:\Programmi\Mozilla Firefox\firefox.exe
C:\Programmi\Pinnacle\Shared Files\Programs\PclePvr\VideoControl.exe
C:\WINDOWS\system32\wuauclt.exe
C:\Programmi\Trend Micro\HijackThis\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://go.microsoft.com/fwlink/?LinkId=69157
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Programmi\File comuni\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: Groove GFS Browser Helper - {72853161-30C5-4D22-B7F9-0BBC1D38A37E} - C:\Programmi\Microsoft Office\Office12\GrooveShellExtensions.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Programmi\Java\jre6\bin\jp2ssv.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Programmi\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O4 - HKLM\..\Run: [PinnacleDriverCheck] C:\WINDOWS\system32\PSDrvCheck.exe -CheckReg
O4 - HKLM\..\Run: [Pinnacle WebUpdater] "C:\Programmi\Pinnacle\Shared Files\Programs\WebUpdater\WebUpdater.exe" -s -f=UpdateVersion.xml -url=http://cdn.pinnaclesys.com/SupportFiles
O4 - HKLM\..\Run: [PMCRemote] C:\Programmi\Pinnacle\Shared Files\Programs\Remote\Remoterm.exe
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [COMODO Firewall Pro] "C:\Programmi\COMODO\Firewall\cfp.exe" -h
O4 - HKLM\..\Run: [COMODO Internet Security] "C:\Programmi\COMODO\Firewall\cfp.exe" -h
O4 - HKLM\..\Run: [NeroFilterCheck] C:\Programmi\File comuni\Ahead\Lib\NeroCheck.exe
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Programmi\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Programmi\Java\jre6\bin\jusched.exe"
O4 - HKLM\..\Run: [TkBellExe] "C:\Programmi\File comuni\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [GrooveMonitor] "C:\Programmi\Microsoft Office\Office12\GrooveMonitor.exe"
O4 - HKCU\..\Run: [PMCS] "C:\Programmi\Pinnacle\Shared Files\Programs\MediaCenterService\PMC.Service.Main.exe"
O4 - HKCU\..\Run: [MessengerPlus3] "C:\Programmi\MessengerPlus! 3\MsgPlus.exe" /WinStart
O4 - HKCU\..\Run: [msnmsgr] "C:\Programmi\Windows Live\Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [BgMonitor_{79662E04-7C6C-4d9f-84C7-88D8A56B10AA}] "C:\Programmi\File comuni\Ahead\Lib\NMBgMonitor.exe"
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [yksim] "c:\documents and settings\margherita masetti\impostazioni locali\dati applicazioni\yksim.exe" yksim
O4 - HKCU\..\Run: [SpybotSD TeaTimer] C:\Programmi\Spybot - Search & Destroy\TeaTimer.exe
O4 - HKCU\..\Run: [PC Suite Tray] "C:\Programmi\Nokia\Nokia PC Suite 7\PCSuite.exe" -onlytray
O4 - HKCU\..\Run: [eMuleAutoStart] C:\Programmi\eMule\emule.exe -AutoStart
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SERVIZIO LOCALE')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SERVIZIO DI RETE')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'Default user')
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~3\Office12\EXCEL.EXE/3000
O9 - Extra button: Invia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~3\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: I&nvia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~3\Office12\ONBttnIE.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~3\Office12\REFIEBAR.DLL
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O18 - Protocol: grooveLocalGWS - {88FED34C-F0CA-4636-A375-3CB6248B04CD} - C:\Programmi\Microsoft Office\Office12\GrooveSystemServices.dll
O20 - AppInit_DLLs:
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Programmi\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Programmi\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Programmi\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Programmi\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: COMODO Internet Security Helper Service (cmdAgent) - Unknown owner - C:\Programmi\COMODO\Firewall\cmdagent.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Programmi\Java\jre6\bin\jqs.exe
O23 - Service: NBService - Nero AG - C:\Programmi\Nero\Nero 7\Nero BackItUp\NBService.exe
O23 - Service: NMIndexingService - Nero AG - C:\Programmi\File comuni\Ahead\Lib\NMIndexingService.exe
O23 - Service: Pinnacle Systems Media Service (PinnacleSys.MediaServer) - Pinnacle Systems - c:\programmi\pinnacle\shared files\programs\mediaserver\pmshost.exe
O23 - Service: PLFlash DeviceIoControl Service - Prolific Technology Inc. - C:\WINDOWS\system32\IoctlSvc.exe
O23 - Service: ServiceLayer - Nokia. - C:\Programmi\PC Connectivity Solution\ServiceLayer.exe

--
End of file - 8375 bytes

wolf per me inizia a fixare queste voci, poi vediamo di usare altri ''pulitori''

C:\documents and settings\margherita masetti\impostazioni locali\dati applicazioni\yksim.exe

O4 - HKCU\..\Run: [yksim] "c:\documents and settings\margherita masetti\impostazioni locali\dati applicazioni\yksim.exe" yksim

questo è un adware,poi fixa pure:

O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)

O20 - AppInit_DLLs:

Poi,per favore , se aspettti solo l'ok di qualcun'altro per procedere,ciao.

P.S. per me dopo puoi fare anche una scansione con superantispyware e malwarebytes che io mi trovo benissimo.

Grazie r16 ti farò sapere.
....e grazie anche a tool.