Ciao a tutti ho un piccolo problema con il PC.
Il mio antivirus ha individuato il worm WORM_VB.AFJ.
Dopo averlo individuato e messo in quarantena (mi ha scritto che non poteva eliminare i file) all'avvio mi compare una schermata che mi dice che non riesce a trovare il file "syssetup.exe"
Di seguito il LOG di Hijack. Grazie in anticipo per gli aiuti.

Ciao

Logfile of HijackThis v1.99.1
Scan saved at 10.27.21, on 05/08/2008
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16674)

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:\WINDOWS\System32\svchost.exe
C:\Programmi\WIDCOMM\Bluetooth Software\bin\btwdins.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\agrsmsvc.exe
C:\Programmi\File comuni\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\Programmi\Trend Micro\OfficeScan Client\ntrtscan.exe
C:\WINDOWS\System32\svchost.exe
C:\Programmi\Trend Micro\OfficeScan Client\tmlisten.exe
C:\Programmi\RealVNC\VNC4\WinVNC4.exe
C:\WINDOWS\system32\SearchIndexer.exe
C:\WINDOWS\system32\CCM\CLICOMP\RemCtrl\Wuser32.exe
C:\WINDOWS\system32\CCM\CcmExec.exe
C:\Programmi\Hewlett-Packard\Shared\hpqwmiex.exe
C:\Programmi\Trend Micro\OfficeScan Client\OfcPfwSvc.exe
C:\WINDOWS\TEMP\WTC4A1.EXE
C:\WINDOWS\Explorer.exe
C:\WINDOWS\system32\igfxtray.exe
C:\WINDOWS\system32\hkcmd.exe
C:\WINDOWS\system32\igfxpers.exe
C:\Programmi\Hewlett-Packard\HP Quick Launch Buttons\QlbCtrl.exe
C:\Programmi\Synaptics\SynTP\SynTPEnh.exe
C:\WINDOWS\system32\igfxsrvc.exe
C:\Programmi\Trend Micro\OfficeScan Client\pccntmon.exe
C:\Programmi\Java\jre1.6.0_05\bin\jusched.exe
C:\Programmi\Analog Devices\Core\smax4pnp.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Programmi\WIDCOMM\Bluetooth Software\BTTray.exe
C:\Programmi\Internet Explorer\iexplore.exe
C:\Programmi\ClamWin\bin\ClamTray.exe
C:\Programmi\ClamWin\bin\ClamWin.exe
C:\Programmi\ClamWin\bin\freshclam.exe
C:\Programmi\Internet Explorer\iexplore.exe
D:\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://intranet.crf.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
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Microsoft Internet Explorer provided by - C.R.F. -
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyServer = crfproxy:8080
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
F2 - REG:system.ini: Shell=Explorer.exe syssetup.exe
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: Spybot-S&D IE Protection - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Programmi\Java\jre1.6.0_05\bin\ssv.dll
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [Persistence] C:\WINDOWS\system32\igfxpers.exe
O4 - HKLM\..\Run: [QlbCtrl] %ProgramFiles%\Hewlett-Packard\HP Quick Launch Buttons\QlbCtrl.exe /Start
O4 - HKLM\..\Run: [SynTPEnh] C:\Programmi\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [OfficeScanNT Monitor] "C:\Programmi\Trend Micro\OfficeScan Client\pccntmon.exe" -HideWindow
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Programmi\Java\jre1.6.0_05\bin\jusched.exe"
O4 - HKLM\..\Run: [SoundMAXPnP] C:\Programmi\Analog Devices\Core\smax4pnp.exe
O4 - HKLM\..\Run: [ClamWin] "C:\Programmi\ClamWin\bin\ClamTray.exe" --logon
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Programmi\Messenger\msmsgs.exe" /background
O4 - Global Startup: BTTray.lnk = ?
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Restrictions present
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O8 - Extra context menu item: Invia a periferica &Bluetooth... - C:\Programmi\WIDCOMM\Bluetooth Software\btsendto_ie_ctx.htm
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.6.0_05\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.6.0_05\bin\ssv.dll
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: @btrez.dll,-4015 - {CCA281CA-C863-46ef-9331-5C8D4460577F} - C:\Programmi\WIDCOMM\Bluetooth Software\btsendto_ie.htm
O9 - Extra 'Tools' menuitem: @btrez.dll,-12650 - {CCA281CA-C863-46ef-9331-5C8D4460577F} - C:\Programmi\WIDCOMM\Bluetooth Software\btsendto_ie.htm
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: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
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
O11 - Options group: [INTERNATIONAL] International*
O14 - IERESET.INF: START_PAGE_URL=http://intranet.crf.it
O17 - HKLM\System\CCS\Services\Tcpip\Parameters: Domain = crf.it
O17 - HKLM\Software\..\Telephony: DomainName = crf.it
O17 - HKLM\System\CS1\Services\Tcpip\Parameters: Domain = crf.it
O17 - HKLM\System\CS1\Services\Tcpip\Parameters: SearchList = crf.it,its.it,elasis.it
O17 - HKLM\System\CCS\Services\Tcpip\Parameters: SearchList = crf.it,its.it,elasis.it
O20 - Winlogon Notify: dimsntfy - %SystemRoot%\System32\dimsntfy.dll (file missing)
O20 - Winlogon Notify: igfxcui - C:\WINDOWS\SYSTEM32\igfxdev.dll
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINDOWS\system32\WPDShServiceObj.dll
O23 - Service: Acronis Scheduler2 Service (AcrSch2Svc) - Unknown owner - C:\Programmi\File comuni\Acronis\Schedule2\schedul2.exe (file missing)
O23 - Service: Agere Modem Call Progress Audio (AgereModemAudio) - Agere Systems - C:\WINDOWS\system32\agrsmsvc.exe
O23 - Service: Bluetooth Service (btwdins) - Broadcom Corporation. - C:\Programmi\WIDCOMM\Bluetooth Software\bin\btwdins.exe
O23 - Service: hpqwmiex - Hewlett-Packard Development Company, L.P. - C:\Programmi\Hewlett-Packard\Shared\hpqwmiex.exe
O23 - Service: OfficeScanNT RealTime Scan (ntrtscan) - Trend Micro Inc. - C:\Programmi\Trend Micro\OfficeScan Client\ntrtscan.exe
O23 - Service: OfficeScanNT Personal Firewall (OfcPfwSvc) - Trend Micro Inc. - C:\Programmi\Trend Micro\OfficeScan Client\OfcPfwSvc.exe
O23 - Service: OfficeScanNT Listener (tmlisten) - Trend Micro Inc. - C:\Programmi\Trend Micro\OfficeScan Client\tmlisten.exe
O23 - Service: VNC Server Version 4 (WinVNC4) - Unknown owner - C:\Programmi\RealVNC\VNC4\WinVNC4.exe" -service (file missing)

Si tratta di lavorare sul Registro di Sistema, ma -com'è ovvio- è cosa consigliabile solo quando se ne abbia almeno un minimo d'esperienza (basta cancellar la voce sbagliata e il computer va KO!): il metodo da usare, viene spiegato nel thread (in inglese) cui ti conduce il sottostante link:
http://www.computerforum.com/103528-startup-problem.html

PS: hai usato una versione obsoleta di HijackThis. Scarica da Aiutamici la versione nuova e poi utilizza quella.

Qualcuno sa come aiutarmi?

Grazie