最近用瑞星查毒查到一个名叫Backdoor.Agent.eix的病毒,感染文件为SVCH0ST.EXE>>C:\WINDOWS\system32\SVCH0ST.EXE,瑞星提示说病毒已清除,可是每次重启了之后又有了,清除不掉,而且是在内存中的,瑞星查不到5秒就查到了,拜托高手告诉我该怎么清除这个病毒啊~谢谢了.
HijackThis@Qoo的扫描日志  V1.97.7
Scan saved at 18:53:13, on 2006-11-14
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\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Rising\Rav\CCenter.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Rising\Rav\Ravmond.exe
c:\program files\rising\rfw\rfwsrv.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Rising\Rav\RavStub.exe
C:\Program Files\Common Files\Microsoft Shared\VS7Debug\mdm.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
c:\program files\rising\rfw\RfwMain.exe
C:\Program Files\Rising\Rav\RavTask.exe
C:\WINDOWS\VM305_STI.EXE
C:\Program Files\Rising\Rav\Ravmon.exe
C:\WINDOWS\VM303_STI.EXE
C:\WINDOWS\System32\ctfmon.exe
D:\QQ\QQ.exe
d:\QQ\TIMPlatform.exe
C:\Program Files\Rising\Rav\Rav.exe
C:\Program Files\Rising\Rav\RsAgent.exe
C:\WINDOWS\msagent\AgentSvr.exe
F:\新建文件夹\HijackThis.exe

O2 - BHO: QQIEHelper - {54EBD53A-9BC1-480B-966A-843A333CA162} - d:\QQ\QQIEHelper.dll
O3 - Toolbar: ????? - {DB9ECD4F-FB8F-4311-B3CE-90B976C2707C} - C:\WINDOWS\System32\KakaTool.dll
O3 - Toolbar: ????? - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [RavTask] "C:\Program Files\Rising\Rav\RavTask.exe" -system
O4 - HKLM\..\Run: [BigDog305] C:\WINDOWS\VM305_STI.EXE VIMICRO USB PC Camera (ZC0305)
O4 - HKLM\..\Run: [StormCodec_Helper] "d:\Storm Codec\StormSet.exe" /S /opti
O4 - HKLM\..\Run: [BigDog303] C:\WINDOWS\VM303_STI.EXE VIMICRO USB PC Camera (ZC0301PLH)
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\System32\ctfmon.exe
O4 - Startup: NTUSER.DAT
O4 - Startup: ntuser.dat.LOG
O4 - Startup: ntuser.ini
O4 - Global Startup: ntuser.dat
O4 - Global Startup: ntuser.dat.LOG
O8 - Extra context menu item: &使用迅雷下载 - d:\Thunder\Program\GetUrl.htm
O8 - Extra context menu item: &使用迅雷下载全部链接 - d:\Thunder\Program\GetAllUrl.htm
O8 - Extra context menu item: 上传到QQ网络硬盘 - D:\QQ\AddToNetDisk.htm
O8 - Extra context menu item: 添加到QQ自定义面板 - D:\QQ\AddPanel.htm
O8 - Extra context menu item: 添加到QQ表情 - D:\QQ\AddEmotion.htm
O8 - Extra context menu item: 用QQ彩信发送该图片 - D:\QQ\SendMMS.htm
O9 - Extra button: QQ (HKLM)
O9 - Extra button: QQ (HKLM)
O9 - Extra button: Messenger (HKLM)
O9 - Extra 'Tools' menuitem: Messenger (HKLM)
O16 - DPF: {A96C48EA-AA88-4BBD-B58C-7B41146A6EAC} (PhotoUploadCtrl Control) - http://qz-photo.qq.com/qzone3/QzoneMediaTools.cab
O16 - DPF: {C661F36D-DF85-4EF4-83C7-E107B83D04B1} (WebActivater Control) - http://dl_dir.qq.com/3dshow/3DShowVM.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{D6275335-E282-42EB-A62C-451F592F18BF}: NameServer = 202.102.134.68 202.102.128.68