请问为何用瑞星杀毒未发现任何病毒，但每次启动计算机时，个人防火墙总提示发现如下病毒信息：
IEXPLORE.EXE>>D:\Program Files\Internet Explorer\IEXPLORE.EXE ->Backdoor.Gpigeon.5.an
下载文件后运行感染，后删除临时文件夹，不行，重装IE，问题解决了，后又再次运行，又感染了，这次怎么也清除不掉，该文件已经删除，瑞星查毒没有，在安全状态下也未查出病毒，但每次启动计算机时，个人防火墙总提示发现如下病毒信息：
IEXPLORE.EXE>>D:\Program Files\Internet Explorer\IEXPLORE.EXE ->Backdoor.Gpigeon.5.an
我的系统是win2000。
高手指教！！

自己看吧http://forum.ikaka.com/topic.asp?board=28&artid=6202404

【回复“命运里の金色”的帖子】
Logfile of HijackThis v1.99.1
Scan saved at 15:04:19, on 2005-7-8
Platform: Windows 2000 SP4 (WinNT 5.00.2195)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
D:\WINNT\System32\smss.exe
D:\WINNT\system32\winlogon.exe
D:\WINNT\system32\services.exe
D:\WINNT\system32\lsass.exe
d:\program files\rising\rfw\rfwsrv.exe
D:\WINNT\system32\svchost.exe
D:\WINNT\system32\spoolsv.exe
D:\WINNT\System32\svchost.exe
D:\WINNT\system32\nvsvc32.exe
D:\WINNT\system32\regsvc.exe
D:\PROGRAM FILES\RISING\RAV\CCENTER.EXE
D:\PROGRAM FILES\RISING\RAV\Ravmond.exe
D:\PROGRAM FILES\RISING\RAV\RavStub.exe
D:\WINNT\System32\tcpsvcs.exe
D:\WINNT\System32\snmp.exe
D:\WINNT\Explorer.EXE
d:\program files\rising\rfw\RfwMain.exe
D:\WINNT\system32\internat.exe
D:\WINNT\system32\rundll32.exe
D:\Program Files\Ringz Studio\Storm Downloader\StormDownloader.exe
D:\PROGRA~1\RISING\RAV\RAVTIMER.EXE
D:\PROGRA~1\RISING\RAV\RAVMON.EXE
D:\WINNT\system32\U8SMSSrv.exe
D:\WINNT\system32\ServerNT.EXE
D:\WINNT\System32\WBEM\WinMgmt.exe
D:\WINNT\system32\svchost.exe
D:\WINNT\System32\inetsrv\inetinfo.exe
D:\WINNT\System32\msdtc.exe
D:\WINNT\system32\zstatus.exe
D:\WINNT\System32\AlertService.exe
D:\U8SOFT\ZW\ZWSQL.exe
C:\155847200541134207\HijackThis.exe

R3 - URLSearchHook: 上网助手 - {BB936323-19FA-4521-BA29-ECA6A121BC78} - D:\PROGRA~1\3721\Assist\asbar.dll
O2 - BHO: ThunderIEHelper Class - {0005A87D-D626-4B3A-84F9-1D9571695F55} - D:\WINNT\system32\xunleibho_v4.dll
O2 - BHO: URLMonitor Class - {3ED9FFDA-79DB-4B2D-99B7-16EA3C4A3A92} - D:\WINNT\system32\hap.dll
O2 - BHO: NetAnts.IE.Monitor - {57E91B41-F40A-11D1-B792-444553540000} - D:\NetAnts\AntAPI.dll
O2 - BHO: Router Layer - {5EB7CB50-E375-4718-B4C0-9AD12EFA2F84} - D:\WINNT\System32\aclayer.dll
O2 - BHO: DownloadValue Class - {616D4040-5712-4F0F-BCF1-5C6420A99E14} - D:\WINNT\system32\winhtp.dll
O2 - BHO: IeCatch2 Class - {A5366673-E8CA-11D3-9CD9-0090271D075B} - D:\PROGRA~1\FLASHGET\jccatch.dll
O2 - BHO: AssistII - {BB936323-19FA-4521-BA29-ECA6A121BC78} - D:\PROGRA~1\3721\Assist\asbar.dll
O2 - BHO: IEHlprObj Class - {CE7C3CF0-4B15-11D1-ABED-709549C10000} - D:\WINNT\system32\qylhelper.dll
O2 - BHO: IE - {D157330A-9EF3-49F8-9A67-4141AC41ADD4} - (no file)
O2 - BHO: YiSou - {EF1D17A9-089F-40cc-8D64-7324CDEBA0DB} - D:\PROGRA~1\YiSou\yisoub.dll
O3 - Toolbar: @msdxmLC.dll,-1@2052,电台(&R) - {8E718888-423F-11D2-876E-00A0C9082467} - D:\WINNT\system32\msdxm.ocx
O3 - Toolbar: 卡卡安全助手 - {DB9ECD4F-FB8F-4311-B3CE-90B976C2707C} - D:\Program Files\Rising\KaKaToolBar\kakatool.dll
O3 - Toolbar: 上网助手 - {BB936323-19FA-4521-BA29-ECA6A121BC78} - D:\PROGRA~1\3721\Assist\asbar.dll
O3 - Toolbar: BitCometBar - {3F1ABCDB-A875-46c1-8345-B72A4567E486} - D:\Program Files\BitComet\BitCometBar\BitCometBar0.1.dll
O3 - Toolbar: 一搜工具条 - {115F6E46-FCBC-41ed-B3B5-3BDDD4AAB5E5} - D:\PROGRA~1\YiSou\yisou.dll
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [internat.exe] internat.exe
O4 - HKLM\..\Run: [hp 1000 firmware] D:\Program Files\hp LaserJet 1000\fwdl.exe
O4 - HKLM\..\Run: [helper.dll] D:\WINNT\system32\rundll32.exe D:\PROGRA~1\3721\helper.dll,Rundll32
O4 - HKLM\..\Run: [StormCodec_Helper] "D:\Program Files\Ringz Studio\Storm Codec\StormSet.exe" /S /opti
O4 - HKLM\..\Run: [MINI_BFYY] D:\Program Files\Ringz Studio\Storm Downloader\StormDownloader.exe
O4 - HKLM\..\Run: [RfwMain] "D:\Program Files\rising\Rfw\rfwmain.exe" -Startup
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE D:\WINNT\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [RavTimer] D:\PROGRA~1\RISING\RAV\RAVTIMER.EXE
O4 - HKLM\..\Run: [RavMon] D:\PROGRA~1\RISING\RAV\RAVMON.EXE -SYSTEM
O4 - HKLM\..\Run: [迅雷4] D:\Program Files\Sandai Technologies Inc\Thunder\MediaIssue\TDUpdate.exe
O8 - Extra context menu item: &使用暴风下载器下载 - D:\Program Files\Ringz Studio\Storm Downloader\geturl.htm
O8 - Extra context menu item: &使用迅雷下载 - D:\Program Files\Sandai Technologies Inc\Thunder\geturl.htm
O8 - Extra context menu item: &使用迅雷下载全部链接 - D:\Program Files\Sandai Technologies Inc\Thunder\getAllurl.htm
O8 - Extra context menu item: 下载页面上的ED2(&K)链接 - D:\Program Files\eMule\ed2k.html
O8 - Extra context menu item: 使用网际快车下载 - D:\Program Files\FlashGet\jc_link.htm
O8 - Extra context menu item: 使用网际快车下载全部链接 - D:\Program Files\FlashGet\jc_all.htm
O8 - Extra context menu item: 添加到QQ自定义面板 - D:\Program Files\Tencent\QQ\AddPanel.htm
O8 - Extra context menu item: 添加到QQ表情 - D:\Program Files\Tencent\QQ\AddEmotion.htm
O8 - Extra context menu item: 火狐Flash保存 - D:\Program Files\FoxFlashplayer\PlugIns\GetFlash.htm
O8 - Extra context menu item: 用QQ彩信发送该图片 - D:\Program Files\Tencent\QQ\SendMMS.htm
O9 - Extra button: 上网助手 - {5D73EE86-05F1-49ed-B850-E423120EC338} - http://assistant.3721.com/index.htm?fb=Cns (file missing)
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - D:\WINNT\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - D:\WINNT\web\related.htm
O9 - Extra button: 易趣购物 - {EE60714F-AC19-427e-861A-FD60ABDF119A} - http://click2.ad4all.net/url2/urlmanage/url.asp?id=1 (file missing)
O9 - Extra 'Tools' menuitem: 易趣购物 - {EE60714F-AC19-427e-861A-FD60ABDF119A} - http://click2.ad4all.net/url2/urlmanage/url.asp?id=1 (file missing)
O9 - Extra button: 访问瑞星网站 - {FF2DE7A6-ECB1-4CBC-9C0E-D92A9E66E444} - http://www.rising.com.cn (file missing)
O9 - Extra button: 访问卡卡社区 - {FF2DE7A6-ECB1-4CBC-9C0E-D92A9E66E445} - http://www.ikaka.com (file missing)
O11 - Options group: [!ANetSpeeder]  NetSpeeder
O11 - Options group: [!CNS]  上网助手-地址栏搜索
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1120794358015
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/muweb_site.cab?1120794311453
O16 - DPF: {AD0CB4E1-37FB-44A9-A42B-0B084491FB73} (LTCPlayer Class) - http://www.lt21.com.cn/control/ltctrl.cab
O16 - DPF: {BC207F7D-3E63-4ACA-99B5-FB5F8428200C} - http://bar.baidu.com/update/IESearch.cab
O16 - DPF: {E4E2F180-CB8B-4DE9-ACBB-DA745D3BA153} (Rising Web Scan Object) - http://download.rising.com.cn/register/pcver/autoupgradepad/Ver2005/OL2005.cab
O16 - DPF: {F138084D-84D7-48CD-BEA8-04772457516E} (VqqSpeedDlProxy Class) - http://218.85.138.27/vqqsdl1006.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{31C8A651-47BE-4029-A371-27B7F4FC6248}: NameServer = 10.10.0.10,61.150.82.65,61.134.1.4
O20 - Winlogon Notify: nwprovau - D:\WINNT\SYSTEM32\nwprovau.dll
O21 - SSODL: eplrr - {B40C1695-2B27-42D0-8BD0-7CCBC01D6CEE} - D:\WINNT\System32\eplrr3.dll
O23 - Service: Logical Disk Manager Administrative Service (dmadmin) - VERITAS Software Corp. - D:\WINNT\System32\dmadmin.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - D:\WINNT\system32\nvsvc32.exe
O23 - Service: Rising Personal Firewall Service (RfwService) - Beijing Rising Technology Corporation Limited - d:\program files\rising\rfw\rfwsrv.exe
O23 - Service: Remote Packet Capture Protocol v.0 (experimental) (rpcapd) - Unknown owner - %ProgramFiles%\WinPcap\rpcapd.exe" -d -f "%ProgramFiles%\WinPcap\rpcapd.ini (file missing)
O23 - Service: Rising Process Communication Center (RsCCenter) - rising - D:\PROGRAM FILES\RISING\RAV\CCENTER.EXE
O23 - Service: RsRavMon Service (RsRavMon) - Beijing Rising Technology Co., Ltd. - D:\PROGRAM FILES\RISING\RAV\Ravmond.exe
O23 - Service: rundll32.exe - Unknown owner - D:\WINNT\rundll32.exe
O23 - Service: 合并报表队列服务 (TaskService) -  - d:\u8soft\gdp\web\bin\taskservice.exe
O23 - Service: UFSoft SMS Platform (U8SmsSrv) - Unknown owner - D:\WINNT\system32\U8SMSSrv.exe
O23 - Service: 用友U8预警调度服务 (UFALERTSERVICE) - Unknown owner - D:\WINNT\System32\AlertService.exe
O23 - Service: U8管理软件 (UFNet) - Unknown owner - D:\WINNT\system32\ServerNT.EXE

O23 - Service: rundll32.exe - Unknown owner - D:\WINNT\rundll32.exe
此项.
在安全模式下显示隐藏文件找到(如果有的话)
rundll32.exe
rundll32.dll
rundll32.key.dll
rundll32_hook.dll
删除.并到注册表编辑器中找到HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services下查找“rundll32.EXE”，然后删除，重新启动后就能直接将那些病毒文件删除掉了。