used.exe ???

gsh

anbei mein HijackThis Logfile:

Logfile of HijackThis v1.98.2
Scan saved at 11:17:21, on 08.11.2004
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

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:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\gearsec.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\htpatch.exe
C:\WINDOWS\System32\RunDll32.exe
C:\Programme\ICQLite\ICQLite.exe
C:\Programme\iTunes\iTunesHelper.exe
C:\Programme\QuickTime\qttask.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Programme\Microsoft Office\Office\1031\OLFSNT40.EXE
C:\Programme\iPod\bin\iPodService.exe
C:\PROGRA~1\Yahoo!\MESSEN~1\ymsgr_tray.exe
C:\Programme\Microsoft Office\Office\1031\msoffice.exe
C:\Programme\mozilla.org\Mozilla\mozilla.exe
F:\hijackthis_198\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.party-worms.de/n/tontechniker
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programme\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: Systran40premi.IEPlugIn - {CFB25594-4D5F-11D6-AB7B-00B0D094B576} - C:\Programme\Systran\4_0\Premium\IEPlugIn.dll
O4 - HKLM\..\Run: [HTpatch] C:\WINDOWS\htpatch.exe
O4 - HKLM\..\Run: [SiSUSBRG] C:\WINDOWS\SiSUSBrg.exe
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [NeroCheck] C:\WINDOWS\System32\\NeroCheck.exe
O4 - HKLM\..\Run: [ICQ Lite] C:\Programme\ICQLite\ICQLite.exe -minimize
O4 - HKLM\..\Run: [iTunesHelper] C:\Programme\iTunes\iTunesHelper.exe
O4 - HKLM\..\Run: [userd] C:\WINDOWS\System32\userd.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Programme\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [Microsoft Works Update Detection] C:\Programme\Gemeinsame Dateien\Microsoft Shared\Works Shared\WkUFind.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [Yahoo! Pager] C:\PROGRA~1\Yahoo!\MESSEN~1\ypager.exe -quiet
O4 - HKCU\..\RunOnce: [ICQ Lite] C:\Programme\ICQLite\ICQLite.exe -trayboot
O4 - Global Startup: Microsoft Office.lnk = C:\Programme\Microsoft Office\Office\OSA9.EXE
O4 - Global Startup: Symantec Fax Starter Edition-Anschluss.lnk = C:\Programme\Microsoft Office\Office\1031\OLFSNT40.EXE
O9 - Extra button: AIM - {AC9E2541-2814-11d5-BC6D-00B0D0A1DE45} - C:\Programme\AIM95\aim.exe
O9 - Extra button: ICQ Lite - {B863453A-26C3-4e1f-A54D-A2CD196348E9} - C:\Programme\ICQLite\ICQLite.exe
O9 - Extra 'Tools' menuitem: ICQ Lite - {B863453A-26C3-4e1f-A54D-A2CD196348E9} - C:\Programme\ICQLite\ICQLite.exe
O9 - Extra button: Yahoo! Messenger - {E5D12C4E-7B4F-11D3-B5C9-0050045C3C96} - C:\PROGRA~1\Yahoo!\MESSEN~1\YPager.exe
O9 - Extra 'Tools' menuitem: Yahoo! Messenger - {E5D12C4E-7B4F-11D3-B5C9-0050045C3C96} - C:\PROGRA~1\Yahoo!\MESSEN~1\YPager.exe
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programme\Messenger\MSMSGS.EXE
O9 - Extra 'Tools' menuitem: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programme\Messenger\MSMSGS.EXE
O16 - DPF: {4C39376E-FA9D-4349-BACC-D305C1750EF3} (EPUImageControl Class) - http://tools.ebayimg.com/eps/wl/acti...l_v1-0-3-9.cab
O16 - DPF: {56336BCB-3D8A-11D6-A00B-0050DA18DE71} (RdxIE Class) - http://207.188.7.150/2104b16cd559536...dxIE601_de.cab
O16 - DPF: {7589EEE6-E336-11D4-8A7E-EE1D971D9B47} (AcontiX Control) - http://secure.aconti.net/acontix/acontix.cab
O16 - DPF: {E855A2D4-987E-4F3B-A51C-64D10A7E2479} (EPSImageControl Class) - http://tools.ebayimg.com/eps/activex...l_v1-0-3-0.cab

Hat jemand eine Ahnung, was sich hinter der Datei userd.exe verbergen kann. Ist diese beim Systemstart erforderlich?