Backdoor:Win32/Rbot.gen

[macray]

Ciao a tutti da una scansione con Windows Live One Care mi e' apparso questo Backdoor:Win32/Rbot.gen che non mi riesce a pulire.Sapete darmi notizie in merito per eliminarlo?
Allego log di HijackThis

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 10.52.34, on 20/07/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16674)
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\Microsoft Windows OneCare Live\Antivirus\MsMpEng.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Programmi\Microsoft Windows OneCare Live\OcHealthMon.exe
C:\WINDOWS\system32\svchost.exe
C:\Programmi\Microsoft Windows OneCare Live\Firewall\msfwsvc.exe
C:\Programmi\Microsoft Windows OneCare Live\winss.exe
C:\Programmi\Microsoft Windows OneCare Live\winssnotify.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\File comuni\Real\Update_OB\realsched.exe
C:\Programmi\Java\jre1.6.0_05\bin\jusched.exe
C:\WINDOWS\system32\ctfmon.exe
C:\WINDOWS\system32\wbem\wmiapsrv.exe
C:\Programmi\File comuni\Microsoft Shared\Windows Live\WLLoginProxy.exe
C:\Programmi\Internet Explorer\iexplore.exe
C:\Programmi\Internet Explorer\iexplore.exe
C:\Programmi\Trend Micro\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.google.com/ie
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.microsoft.com/isapi/redi...amp;ar=iesearch
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
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://home.microsoft.com/access/autosearch.asp?p=%s
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = iexplore
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
R3 - URLSearchHook: Yahoo! Toolbar con blocco Pop-Up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - (no file)
O2 - BHO: Supporto di collegamento per Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\File comuni\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: RealPlayer Download and Record Plugin for Internet Explorer - {3049C3E9-B461-4BC5-8870-4C09146192CA} - C:\Program Files\Real\RealPlayer\rpbrowserrecordplugin.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Programmi\Java\jre1.6.0_05\bin\ssv.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
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Programmi\Java\jre1.6.0_05\bin\jusched.exe"
O4 - HKLM\..\Run: [OneCareUI] "C:\Programmi\Microsoft Windows OneCare Live\winssnotify.exe"
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
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~2\OFFICE11\EXCEL.EXE/3000
O16 - DPF: {556DDE35-E955-11D0-A707-000000521957} - http://www.xblock.com/download/xclean_micro.exe
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} (BDSCANONLINE Control) - http://download.bitdefender.com/res...can8/oscan8.cab
O16 - DPF: {7F8C8173-AD80-4807-AA75-5672F22B4582} (ICSScanner Class) - http://download.zonelabs.com/bin/pr...anner371420.cab
O16 - DPF: {8AD9C840-044E-11D1-B3E9-00805F499D93} (Java Runtime Environment 1.6.0) - http://sdlc-esd.sun.com/ESD40/JSCDL...ows-i586-jc.cab
O16 - DPF: {BDBDE413-7B1C-4C68-A8FF-C5B2B4090876} (F-Secure Online Scanner 3.3) - http://support.f-secure.com/ols/fscax.cab
O16 - DPF: {EF791A6B-FC12-4C68-99EF-FB9E207A39E6} (McFreeScan Class) - http://download.mcafee.com/molbin/i...332/mcfscan.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{456B0043-CE66-46FD-B398-F800F8ACDA1C}: NameServer = 193.70.152.15 193.70.152.25

--
End of file - 4881 bytes

[xcdegasp]

ti sposto in area delle infezioni

riesegui HiJackThis optando per l'opzione "Scan Only", al termine il pulsante in basso a sinistra si chiamerà "Fix Checked", quindi seleziona le righe da fixare e premi tale tasto.
Fixa:

R3 - URLSearchHook: Yahoo! Toolbar con blocco Pop-Up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - (no file)

ad ogni modo mi pare sia incompleto come log...


segui la semplice procedura descritta in Guida alla Disinfezione per Infetti e pubblica tutti i log richiesti facendo attenzione alle Regole di Sezione, così potremmo aiutarti