Habe das Problem, dass ein Prozess namens win**.tmp.exe versucht auf das Internet zuzugreifen. Wäre um Hilfe froh. Hier das HiJack Logfile:

Logfile of HijackThis v1.99.1
Scan saved at 10:54:19, on 07.08.2006
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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:\Programme\xampp\apache\bin\apache.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgamsvr.exe
C:\WINDOWS\Explorer.EXE
C:\PROGRA~1\Grisoft\AVGFRE~1\avgupsvc.exe
C:\Programme\Pinnacle\MediaServer\Microsoft SQL Server\MSSQL$PINNACLESYS\Binn\sqlservr.exe
C:\Programme\Analog Devices\SoundMAX\SMAgent.exe
C:\WINDOWS\system32\svchost.exe
C:\Programme\Swisscom Mobile\Unlimited Data Manager\DashBoardS.exe
C:\Programme\TortoiseSVN\bin\TSVNCache.exe
C:\Programme\UPHClean\uphclean.exe
C:\Programme\xampp\apache\bin\apache.exe
C:\Programme\Swisscom Mobile\Sesam\BIN\SecMIPService.exe
C:\WINDOWS\AGRSMMSG.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgcc.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgemc.exe
C:\Programme\QuickTime\qttask.exe
C:\WINDOWS\system32\igfxtray.exe
C:\WINDOWS\system32\hkcmd.exe
C:\Programme\SAMSUNG\MagicKBD\MagicKBD.exe
C:\WINDOWS\system32\igfxpers.exe
C:\Programme\Gemeinsame Dateien\{64221264-063B-1031-0413-050410150029}\Update.exe
C:\WINDOWS\system32\wuauclt.exe
C:\Programme\Mozilla Firefox\firefox.exe
\?\C:\WINDOWS\system32\WBEM\WMIADAP.EXE
C:\Programme\Internet Explorer\iexplore.exe
C:\Programme\HiJack This\HijackThis.exe

O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\Grisoft\AVGFRE~1\avgcc.exe /STARTUP
O4 - HKLM\..\Run: [AVG7_EMC] C:\PROGRA~1\Grisoft\AVGFRE~1\avgemc.exe
O4 - HKLM\..\Run: [MagicKeyboard] C:\Programme\SAMSUNG\MagicKBD\PreMKBD.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Programme\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [igfxtray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [igfxhkcmd] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [igfxpers] C:\WINDOWS\system32\igfxpers.exe
O4 - Global Startup: C-CHANNEL OnlineUpdate.lnk = ?
O8 - Extra context menu item: &ieSpell Options - res://C:\Programme\ieSpell\iespell.dll/SPELLOPTION.HTM
O8 - Extra context menu item: Check &Spelling - res://C:\Programme\ieSpell\iespell.dll/SPELLCHECK.HTM
O8 - Extra context menu item: Nach Microsoft &Excel exportieren - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programme\Java\j2re1.4.2_08\bin\npjpi142_08.dll
O9 - Extra 'Tools' menuitem: Sun Java Konsole - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programme\Java\j2re1.4.2_08\bin\npjpi142_08.dll
O9 - Extra button: ieSpell - {0E17D5B7-9F5D-4fee-9DF6-CA6EE38B68A8} - C:\Programme\ieSpell\iespell.dll
O9 - Extra 'Tools' menuitem: ieSpell - {0E17D5B7-9F5D-4fee-9DF6-CA6EE38B68A8} - C:\Programme\ieSpell\iespell.dll
O9 - Extra button: (no name) - {1606D6F9-9D3B-4aea-A025-ED5B2FD488E7} - C:\Programme\ieSpell\iespell.dll
O9 - Extra 'Tools' menuitem: ieSpell Options - {1606D6F9-9D3B-4aea-A025-ED5B2FD488E7} - C:\Programme\ieSpell\iespell.dll
O9 - Extra button: Recherchieren - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - h**p://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - h**p://v5.windowsupdate.microsoft.com/v5consumer/V5Controls/en/x86/client/wuweb_site.cab?1117033511017
O23 - Service: Adobe LM Service - Adobe Systems - C:\Programme\Gemeinsame Dateien\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: Apache2 - Unknown owner - C:\Programme\xampp\apache\bin\apache.exe" -k runservice (file missing)
O23 - Service: AVG7 Alert Manager Server (Avg7Alrt) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgamsvr.exe
O23 - Service: AVG7 Update Service (Avg7UpdSvc) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgupsvc.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Programme\Gemeinsame Dateien\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPodService - Apple Computer, Inc. - C:\Programme\iPod\bin\iPodService.exe
O23 - Service: MSSQL$PINNACLESYS - Unknown owner - C:\Programme\Pinnacle\MediaServer\Microsoft SQL Server\MSSQL$PINNACLESYS\Binn\sqlservr.exe" -sPINNACLESYS (file missing)
O23 - Service: Samsung Update Plus - Unknown owner - C:\Programme\Samsung\Samsung Update Plus\SLUBackgroundService.exe
O23 - Service: Sesam Control Service (SesamService) - Swisscom Mobile - C:\Programme\Swisscom Mobile\Sesam\BIN\SecMIPService.exe
O23 - Service: SoundMAX Agent Service (SoundMAX Agent Service (default)) - Analog Devices, Inc. - C:\Programme\Analog Devices\SoundMAX\SMAgent.exe
O23 - Service: SQLAgent$PINNACLESYS - Unknown owner - C:\Programme\Pinnacle\MediaServer\Microsoft SQL Server\MSSQL$PINNACLESYS\Binn\sqlagent.EXE" -i PINNACLESYS (file missing)

Ich glaube ich habe das Problem soeben selbst gefixt. Hab nochmals mit Google recherchiert und folgendes gefunden:

How to fix win???.tmp infection
Scan your computer using Hijackthis. After scan locate line O20 - Winlogon Notify: win???32 - C:\WINDOWS\SYSTEM32\win???32.dll. ??? is replaced with any 3 symbols (For example: winzdn32.dll). Go to C:\WINDOWS\SYSTEM32\, find win???32.dll file and rename it adding .txt extention (win???32.dll.txt). Restart the computer.

Das habe ich gemacht und es hat so funktioniert.
Ich habe danach die Datei noch mit jotti getestet und drei haben es als Trojaner erkannt.