Descrizione problema: quando avvio Internet Explorer questo non si apre normalmente ma visualizza solo i bordi della finestra e la barra degli indirizzi bloccando tutto il PC constringendomi a riavviare la macchina.
Di seguito c'è il log di HijackThis.

Logfile of HijackThis v1.99.1
Scan saved at 16.35.07, on 05/09/2005
Platform: Windows 2000 SP4 (WinNT 5.00.2195)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\system32\spoolsv.exe
C:\WINNT\system32\mscw.exe
C:\Programmi\McAfee\McAfee VirusScan\Avsynmgr.exe
C:\WINNT\System32\svchost.exe
C:\PROGRA~1\MICROS~4\MSSQL\binn\sqlservr.exe
C:\Programmi\Microsoft Analysis Services\Bin\msmdsrv.exe
C:\WINNT\system32\regsvc.exe
C:\WINNT\system32\MSTask.exe
C:\WINNT\system32\stisvc.exe
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\Programmi\RealVNC\VNC4\WinVNC4.exe
C:\WINNT\system32\mspmspsv.exe
C:\WINNT\system32\svchost.exe
C:\Programmi\McAfee\McAfee VirusScan\VsStat.exe
C:\WINNT\Explorer.EXE
C:\PROGRA~1\MICROS~4\MSSQL\binn\sqlagent.exe
C:\Programmi\McAfee\McAfee VirusScan\Vshwin32.exe
C:\Programmi\McAfee\McAfee VirusScan\Avconsol.exe
C:\Programmi\Microsoft AntiSpyware\gcasServ.exe
C:\Programmi\File comuni\Network Associates\McShield\Mcshield.exe
C:\WINNT\system32\internat.exe
C:\Programmi\MSN Messenger\MsnMsgr.Exe
C:\Programmi\Microsoft SQL Server\80\Tools\Binn\sqlmangr.exe
C:\Programmi\Microsoft AntiSpyware\gcasDtServ.exe
C:\WINNT\explorer.exe
C:\Documents and Settings\stage\Desktop\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.google.it
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.google.it
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,AutoConfigURL = file://\\ducatus-nt1/netlogon/proxy.pac
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: Class - {0C0FC6A7-3D02-AA41-C94E-713AE64B0065} - C:\WINNT\winpy.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: (no name) - {7CE88206-C7F3-6BA5-8A3C-484231424B40} - (no file)
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\system32\msdxm.ocx
O3 - Toolbar: McAfee VirusScan - {ACB1E670-3217-45C4-A021-6B829A8A27CB} - C:\Programmi\McAfee\McAfee VirusScan\VSCShellExtension.dll
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [gcasServ] "C:\Programmi\Microsoft AntiSpyware\gcasServ.exe"
O4 - HKLM\..\Run: [mfcsq.exe] C:\WINNT\mfcsq.exe
O4 - HKLM\..\Run: [ipka32.exe] C:\WINNT\ipka32.exe
O4 - HKCU\..\Run: [internat.exe] internat.exe
O4 - HKCU\..\Run: [MsnMsgr] "C:\Programmi\MSN Messenger\MsnMsgr.Exe" /background
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINNT\system32\msjava.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\WINNT\system32\msjava.dll
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINNT\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINNT\web\related.htm
O16 - DPF: {00B71CFB-6864-4346-A978-C0A14556272C} (Checkers Class) - http://messenger.zone.msn.com/binary/msgrchkr.cab31267.cab
O16 - DPF: {14B87622-7E19-4EA8-93B3-97215F77A6BC} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsPAClient.cab31267.cab
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsClient.cab31267.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/msnmessengersetupdownloader.cab
O16 - DPF: {B8BE5E93-A60C-4D26-A2DC-220313175592} (ZoneIntro Class) - http://messenger.zone.msn.com/binary/ZIntro.cab32846.cab
O16 - DPF: {BD393C14-72AD-4790-A095-76522973D6B8} (CBreakshotControl Class) - http://messenger.zone.msn.com/binary/Bankshot.cab31267.cab
O16 - DPF: {E6187999-9FEC-46A1-A20F-F4CA977D5643} (ZoneChess Object) - http://messenger.zone.msn.com/binary/Chess.cab31267.cab
O17 - HKLM\System\CCS\Services\Tcpip\Parameters: Domain = ducatus.local
O17 - HKLM\System\CCS\Services\Tcpip\..\{189905FB-3727-41E8-8158-E8B606A970B9}: NameServer = 192.168.2.9
O17 - HKLM\System\CS1\Services\Tcpip\Parameters: Domain = ducatus.local
O17 - HKLM\System\CS2\Services\Tcpip\Parameters: Domain = ducatus.local
O23 - Service: Remote Procedure Call (RPC) Helper ( 11Fßä#·ºÄÖ`I) - Unknown owner - C:\WINNT\system32\mscw.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINNT\system32\Ati2evxx.exe
O23 - Service: AVSync Manager (AvSynMgr) - Network Associates, Inc. - C:\Programmi\McAfee\McAfee VirusScan\Avsynmgr.exe
O23 - Service: Servizio amministrativo di Gestione disco logico (dmadmin) - VERITAS Software Corp. - C:\WINNT\System32\dmadmin.exe
O23 - Service: McShield - Unknown owner - C:\Programmi\File comuni\Network Associates\McShield\Mcshield.exe
O23 - Service: VNC Server Version 4 (WinVNC4) - Unknown owner - C:\Programmi\RealVNC\VNC4\WinVNC4.exe" -service (file missing)

Ciao ,
esegui queste operazioni

riavvia in modalità provvisoria, leggi qui come fare
http://www.aiutamici.com/software/view.asp?tipo=home&CodSw=344&SH=N

apri HIJAC THIS ed elimina come indicato in questo articolo
http://www.aiutamici.com/software/descrizione.asp?CodSw=1175
le righe che seguono, (nel caso le righe da eliminare non compaiono in modalità provvisoria, eliminale dalla modalità normale e riavvia il computer).

==================================
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,AutoConfigURL = file://\\ducatus-nt1/netlogon/proxy.pac
-
O2 - BHO: Class - {0C0FC6A7-3D02-AA41-C94E-713AE64B0065} - C:\WINNT\winpy.dll
-
O2 - BHO: (no name) - {7CE88206-C7F3-6BA5-8A3C-484231424B40} - (no file)
-
O4 - HKLM\..\Run: [mfcsq.exe] C:\WINNT\mfcsq.exe
O4 - HKLM\..\Run: [ipka32.exe] C:\WINNT\ipka32.exe
-
O17 - HKLM\System\CCS\Services\Tcpip\Parameters: Domain = ducatus.local
-
O17 - HKLM\System\CS1\Services\Tcpip\Parameters: Domain = ducatus.local
O17 - HKLM\System\CS2\Services\Tcpip\Parameters: Domain = ducatus.local
O23 - Service: Remote Procedure Call (RPC) Helper ( 11Fßä#·ºÄÖ`I) - Unknown owner - C:\WINNT\system32\mscw.exe
-
O23 - Service: VNC Server Version 4 (WinVNC4) - Unknown owner - C:\Programmi\RealVNC\VNC4\WinVNC4.exe" -service (file missing)
==================================

Con la funzione TROVA di Windows, cerca ed elimina questi file,

==================================
proxy.pac
winpy.dll
mfcsq.exe
ipka32.exe
mscw.exe
==================================


Vai a PANNELLO DI CONTROLLO e clicca su OPZIONI INTERNET
nella finestra che si apre clicca i tre pulsanti
ELIMINA COOKIES - ELIMINA FILE - CANCELLA CRONOOLOGIA


al termine utilizza i programmi AD-AWARE e SPYBOT indicati in questo articolo
http://www.aiutamici.com/software/view.asp?tipo=home&CodSw=388&SH=N

sempre in modalità provvisoria fai una scansione Antivirus.

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Collaboratore Aiutamici