ecco il post:
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 15.08.19, on 25/09/2010
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v8.00 (8.00.6001.18702)
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\nvsvc32.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Programmi\Avira\AntiVir Desktop\sched.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\VIA\VIAudioi\HDADeck\HDeck.exe
C:\Programmi\Avira\AntiVir Desktop\avgnt.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Programmi\Avira\AntiVir Desktop\avguard.exe
C:\Programmi\Java\jre6\bin\jqs.exe
C:\WINDOWS\system32\HPZipm12.exe
C:\Programmi\Microsoft\Search Enhancement Pack\SeaPort\SeaPort.exe
C:\WINDOWS\system32\svchost.exe
C:\Programmi\TuneUp Utilities 2010\TuneUpUtilitiesService32.exe
C:\Programmi\TuneUp Utilities 2010\TuneUpUtilitiesApp32.exe
C:\WINDOWS\system32\wbem\wmiapsrv.exe
C:\Programmi\Mozilla Firefox\firefox.exe
C:\Programmi\Mozilla Firefox\plugin-container.exe
C:\Programmi\Veetle\Player\player.exe
C:\Programmi\Trend Micro\HijackThis\HijackThis.exe

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://search.conduit.com?SearchSource=10&ctid=CT2530241
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 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
R3 - URLSearchHook: Softonic-IT Toolbar - {e3393495-8103-46a0-8181-270273eddd60} - C:\Programmi\Softonic-IT\tbSoft.dll
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Programmi\File comuni\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: Search Helper - {6EBF7485-159F-4bff-A14F-B9E3AAC4465B} - C:\Programmi\Microsoft\Search Enhancement Pack\Search Helper\SearchHelper.dll
O2 - BHO: Groove GFS Browser Helper - {72853161-30C5-4D22-B7F9-0BBC1D38A37E} - C:\PROGRA~1\Microsoft Office\Office14\GROOVEEX.DLL
O2 - BHO: Guida per l'accesso a Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Programmi\File comuni\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: URLRedirectionBHO - {B4F3A835-0E21-4959-BA22-42B3008E02FF} - C:\PROGRA~1\Microsoft Office\Office14\URLREDIR.DLL
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Programmi\Java\jre6\bin\jp2ssv.dll
O2 - BHO: Windows Live Toolbar Helper - {E15A8DC0-8516-42A1-81EA-DC94EC1ACF10} - C:\Programmi\Windows Live\Toolbar\wltcore.dll
O2 - BHO: Softonic-IT Toolbar - {e3393495-8103-46a0-8181-270273eddd60} - C:\Programmi\Softonic-IT\tbSoft.dll
O2 - BHO: JQSIEStartDetectorImpl - {E7E6F031-17CE-4C07-BC86-EABFE594F69C} - C:\Programmi\Java\jre6\lib\deploy\jqs\ie\jqs_plugin.dll
O3 - Toolbar: &Windows Live Toolbar - {21FA44EF-376D-4D53-9B0F-8A89D3229068} - C:\Programmi\Windows Live\Toolbar\wltcore.dll
O3 - Toolbar: Softonic-IT Toolbar - {e3393495-8103-46a0-8181-270273eddd60} - C:\Programmi\Softonic-IT\tbSoft.dll
O4 - HKLM\..\Run: [HDAudDeck] C:\Programmi\VIA\VIAudioi\HDADeck\HDeck.exe 1
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Programmi\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [Adobe ARM] "C:\Programmi\File comuni\Adobe\ARM\1.0\AdobeARM.exe"
O4 - HKLM\..\Run: [avgnt] "C:\Programmi\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\S-1-5-18\..\RunOnce: [_nltide_3] rundll32 advpack.dll,LaunchINFSectionEx nLite.inf,C,,4,N (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O4 - HKUS\.DEFAULT\..\RunOnce: [_nltide_3] rundll32 advpack.dll,LaunchINFSectionEx nLite.inf,C,,4,N (User 'Default user')
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\Microsoft Office\Office14\EXCEL.EXE/3000
O8 - Extra context menu item: I&nvia a OneNote - res://C:\PROGRA~1\Microsoft Office\Office14\ONBttnIE.dll/105
O9 - Extra button: Inserisci blog - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Programmi\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra 'Tools' menuitem: Inserisci &blog in Windows Live Writer - {219C3416-8CB2-491a-A3C7-D9FCDDC9D600} - C:\Programmi\Windows Live\Writer\WriterBrowserExtension.dll
O9 - Extra button: Invia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\Programmi\Microsoft Office\Office14\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: I&nvia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\Programmi\Microsoft Office\Office14\ONBttnIE.dll
O9 - Extra button: &Note collegate di OneNote - {789FE86F-6FC4-46A1-9849-EDE0DB0C95CA} - C:\Programmi\Microsoft Office\Office14\ONBttnIELinkedNotes.dll
O9 - Extra 'Tools' menuitem: &Note collegate di OneNote - {789FE86F-6FC4-46A1-9849-EDE0DB0C95CA} - C:\Programmi\Microsoft Office\Office14\ONBttnIELinkedNotes.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O13 - Gopher Prefix:
O16 - DPF: {6F15128C-E66A-490C-B848-5000B5ABEEAC} (HP Download Manager) - https://h20436.www2.hp.com/ediags/dex/secure/HPDEXAXO.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{9C5A577E-8D77-4B19-BC29-A9B22F7511C8}: NameServer = 85.37.17.55 85.38.28.93
O18 - Filter hijack: text/xml - {807573E5-5146-11D5-A672-00B0D022E945} - C:\Programmi\File comuni\Microsoft Shared\OFFICE14\MSOXMLMF.DLL
O23 - Service: Avira AntiVir Scheduler (AntiVirScheduler) - Avira GmbH - C:\Programmi\Avira\AntiVir Desktop\sched.exe
O23 - Service: Avira AntiVir Guard (AntiVirService) - Avira GmbH - C:\Programmi\Avira\AntiVir Desktop\avguard.exe
O23 - Service: Java Quick Starter (JavaQuickStarterService) - Sun Microsystems, Inc. - C:\Programmi\Java\jre6\bin\jqs.exe
O23 - Service: McAfee Security Scan Component Host Service (McComponentHostService) - McAfee, Inc. - C:\Programmi\McAfee Security Scan\2.0.181\McCHSvc.exe
O23 - Service: NVIDIA Display Driver Service (nvsvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\system32\HPZipm12.exe
O23 - Service: TuneUp Drive Defrag Service (TuneUp.Defrag) - TuneUp Software - C:\Programmi\TuneUp Utilities 2010\TuneUpDefragService.exe
O23 - Service: TuneUp Utilities Service (TuneUp.UtilitiesSvc) - TuneUp Software - C:\Programmi\TuneUp Utilities 2010\TuneUpUtilitiesService32.exe

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End of file - 7449 bytes

ho disattivato il ripristino, ho riavviato outpost ha fatto il suo lavoro. ma il troyan continua a vedersi!!!!
aiutoooooooo

Ok quel virus si annida nel file winlogon.exe che è un file di sistema, bisogna ripristinarlo dal file originale

se hai il CD di Windows prova a fare cosi;

Avvia dal CD e alla schermata di benvenuto, clicca su R in modo da partire sulla console di ripristino.
-Scegli il tuo sistema, generalmente 1
- metti la password admin , se non é impostata premi semplicemente su invio

A questo punto digita i seguenti comandi

cd c:\ (invio)
cd windows (invio)
cd system32 (invio)
copy winlogon.ex_ (invio)

exit (invio)

oppure se la lettera del CD-Rom é D per esempio, digita

copy D:\i386\winlogon.ex_ C:\windows\system32\winlogon.exe


Fate tutti una copia di sistema, di questi problemi non ne avrete più, leggete la Guida al PC Sicuro.

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alfonso_aiutamici@hotmail.it

Fai la copia di sistema cosi in seguito ti basterà ripristinarla invece che ricorrere alle riparazioni.

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alfonso_aiutamici@hotmail.it

Segui le indicazioni di R16... un controllo in + per star tranquillo!

Ok, ma nel caso si ripresentasse quell'errore, leggi le risposte in questa discussione.

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alfonso_aiutamici@hotmail.it