TR/Dldr.Exchanger.bdd?

[Spleen]

Come da titolo, Antivir ha rilevato questo malware, ma su google non si trova assolutamente nulla di utile in merito, né se posso rimuoverlo facilmente né se è potenzialmente pericoloso
Allego anche il log di Hijackthis:

Logfile of Trend Micro HijackThis v2.0.4
Scan saved at 23:13:47, on 19/01/2011
Platform: Windows 7 (WinNT 6.00.3504)
MSIE: Internet Explorer v8.00 (8.00.7600.16700)
Boot mode: Normal

Running processes:
C:\Windows\system32\taskhost.exe
C:\Windows\system32\Dwm.exe
C:\Windows\Explorer.EXE
C:\Program Files\Common Files\Java\Java Update\jusched.exe
C:\Program Files\Avira\AntiVir Desktop\avgnt.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\Program Files\Common Files\Adobe\OOBE\PDApp\UWA\AAM Updates Notifier.exe
C:\Program Files\Steam\Steam.exe
C:\Windows\system32\wuauclt.exe
C:\Program Files\Windows Live\Contacts\wlcomm.exe
C:\Program Files\KVIrc\kvirc.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Mozilla Firefox\plugin-container.exe
C:\program files\avira\antivir desktop\avcenter.exe
C:\Windows\system32\notepad.exe
C:\PROGRA~1\Java\jre6\bin\jp2launcher.exe
C:\Program Files\Java\jre6\bin\java.exe
C:\Windows\system32\conhost.exe
C:\Users\DM\Desktop\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft.com/fwlink/?LinkId=69157
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 =
O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: Search Helper - {6EBF7485-159F-4bff-A14F-B9E3AAC4465B} - C:\Program Files\Microsoft\Search Enhancement Pack\Search Helper\SEPsearchhelperie.dll
O2 - BHO: Groove GFS Browser Helper - {72853161-30C5-4D22-B7F9-0BBC1D38A37E} - C:\PROGRA~1\MIF5BA~1\Office14\GROOVEEX.DLL
O2 - BHO: Guida per l'accesso a Windows Live - {9030D464-4C02-4ABF-8ECC-5164760863C6} - C:\Program Files\Common Files\Microsoft Shared\Windows Live\WindowsLiveLogin.dll
O2 - BHO: URLRedirectionBHO - {B4F3A835-0E21-4959-BA22-42B3008E02FF} - C:\PROGRA~1\MIF5BA~1\Office14\URLREDIR.DLL
O2 - BHO: Bing Bar BHO - {d2ce3e00-f94a-4740-988e-03dc2f38c34f} - C:\Program Files\MSN Toolbar\Platform\6.3.2322.0\npwinext.dll
O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files\Java\jre6\bin\jp2ssv.dll
O3 - Toolbar: @C:\Program Files\MSN Toolbar\Platform\6.3.2322.0\npwinext.dll,-100 - {8dcb7100-df86-4384-8842-8fa844297b3f} - C:\Program Files\MSN Toolbar\Platform\6.3.2322.0\npwinext.dll
O4 - HKLM\..\Run: [BCSSync] "C:\Program Files\Microsoft Office\Office14\BCSSync.exe" /DelayServices
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 9.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Common Files\Java\Java Update\jusched.exe"
O4 - HKLM\..\Run: [avgnt] "C:\Program Files\Avira\AntiVir Desktop\avgnt.exe" /min
O4 - HKLM\..\Run: [AdobeAAMUpdater-1.0] "C:\Program Files\Common Files\Adobe\OOBE\PDApp\UWA\UpdaterStartupUtility.exe"
O4 - HKLM\..\Run: [SwitchBoard] C:\Program Files\Common Files\Adobe\SwitchBoard\SwitchBoard.exe
O4 - HKLM\..\Run: [AdobeCS5ServiceManager] "C:\Program Files\Common Files\Adobe\CS5ServiceManager\CS5ServiceManager.exe" -launchedbylogin
O4 - HKLM\..\Run: [Malwarebytes' Anti-Malware (reboot)] "C:\Program Files\Malwarebytes' Anti-Malware\mbam.exe" /runcleanupscript
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\Windows Live\Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [Steam] "C:\Program Files\Steam\Steam.exe" -silent
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MIF5BA~1\Office14\EXCEL.EXE/3000
O8 - Extra context menu item: I&nvia a OneNote - res://C:\PROGRA~1\MIF5BA~1\Office14\ONBttnIE.dll/105
O9 - Extra button: Invia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\Program Files\Microsoft Office\Office14\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: I&nvia a OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\Program Files\Microsoft Office\Office14\ONBttnIE.dll
O9 - Extra button: &Note collegate di OneNote - {789FE86F-6FC4-46A1-9849-EDE0DB0C95CA} - C:\Program Files\Microsoft Office\Office14\ONBttnIELinkedNotes.dll
O9 - Extra 'Tools' menuitem: &Note collegate di OneNote - {789FE86F-6FC4-46A1-9849-EDE0DB0C95CA} - C:\Program Files\Microsoft Office\Office14\ONBttnIELinkedNotes.dll
O18 - Filter hijack: text/xml - {807573E5-5146-11D5-A672-00B0D022E945} - C:\Program Files\Common Files\Microsoft Shared\OFFICE14\MSOXMLMF.DLL
O23 - Service: AMD External Events Utility - AMD - C:\Windows\system32\atiesrxx.exe
O23 - Service: Avira AntiVir Scheduler (AntiVirScheduler) - Avira GmbH - C:\Program Files\Avira\AntiVir Desktop\sched.exe
O23 - Service: Avira AntiVir Guard (AntiVirService) - Avira GmbH - C:\Program Files\Avira\AntiVir Desktop\avguard.exe
O23 - Service: Crypkey License - CrypKey (Canada) Ltd. - C:\Windows\SYSTEM32\crypserv.exe
O23 - Service: LibUsb-Win32 - Daemon, Version 0.1.10.1 (libusbd) - http://libusb-win32.sourceforge.net - C:\Windows\system32\libusbd-nt.exe
O23 - Service: Nalpeiron Licensing Service (nlsX86cc) - Nalpeiron Ltd. - C:\Windows\system32\nlssrv32.exe
O23 - Service: Steam Client Service - Valve Corporation - C:\Program Files\Common Files\Steam\SteamService.exe
O23 - Service: SwitchBoard - Adobe Systems Incorporated - C:\Program Files\Common Files\Adobe\SwitchBoard\SwitchBoard.exe

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End of file - 5839 bytes

[Berga95]

Hai il Log di Avira? Cioè, che file viene segnalato?

[CRYPAX]

da quel che ho letto è stato aggiunto alle definizioni di Avira .version 7.11.01.110
quindi se è nelle sue definizioni e lo rileva, in teoria dovrebbe averlo eliminato
posta il log di avira