每次启动后都能杀出一个鸽子Backdoor.Gpigeon.nva ，躲在IEXPLORE.EXE里面。附上扫描记录，请高手指点如何查杀！
HijackThis_815汉化版扫描日志 V1.99.1
保存于      11:53:33, 日期 2007-2-11
操作系统：  Windows XP SP2 (WinNT 5.01.2600)
浏览器：    Internet Explorer v6.00 SP2 (6.00.2900.2180)

当前运行的进程：         
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
d:\Program Files\Rising\Rav\CCenter.exe
C:\WINDOWS\System32\svchost.exe
d:\Program Files\Rising\Rav\Ravmond.exe
d:\program files\rising\rfw\rfwsrv.exe
C:\WINDOWS\system32\spoolsv.exe
d:\Program Files\Rising\Rav\RavStub.exe
C:\WINDOWS\system32\DRIVERS\CDANTSRV.EXE
C:\WINDOWS\Explorer.EXE
d:\program files\rising\rfw\RfwMain.exe
C:\WINDOWS\system32\CNAB3RPK.EXE
D:\Program Files\lotus\notes\ntmulti.exe
D:\Program Files\Rising\Rav\RavTask.exe
C:\WINDOWS\system32\ctfmon.exe
D:\Program Files\Rising\Rav\Ravmon.exe
E:\新建文件夹\HijackThis1991zww.exe
C:\WINDOWS\system32\wuauclt.exe

O1 - Hosts: 172.16.0.10 oaserver oaserver.yuchai.com
O1 - Hosts: 172.16.0.25 observer observer.yuchai.com
O1 - Hosts: 172.16.0.36 ocserver ocserver.yuchai.com
O1 - Hosts: 172.16.0.37 odserver odserver.yuchai.com
O4 - 启动项HKLM\\Run: [RavTask] "d:\Program Files\Rising\Rav\RavTask.exe" -system
O4 - 启动项HKLM\\Run: [RfwMain] "d:\Program Files\Rising\Rfw\rfwmain.exe" -Startup
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O8 - IE右键菜单中的新增项目: 上传到QQ网络硬盘 - D:\Program Files\Tencent\QQ\AddToNetDisk.htm
O8 - IE右键菜单中的新增项目: 添加到QQ自定义面板 - D:\Program Files\Tencent\QQ\AddPanel.htm
O8 - IE右键菜单中的新增项目: 添加到QQ表情 - D:\Program Files\Tencent\QQ\AddEmotion.htm
O8 - IE右键菜单中的新增项目: 用QQ彩信发送该图片 - D:\Program Files\Tencent\QQ\SendMMS.htm
O16 - DPF: {1F831FA1-42FC-11D4-95A6-0080AD30DCE1} (InstaFred) - file://D:\Program Files\AutoCAD 2002\InstFred.ocx
O16 - DPF: {78AF2F24-A9C3-11D3-BF8C-0060B0FCC122} (AcDcToday 控件) - file://D:\Program Files\AutoCAD 2002\AcDcToday.ocx
O16 - DPF: {AE563722-B4F5-11D4-A415-00108302FDFD} (NOXLATE-BANR) - file://D:\Program Files\AutoCAD 2002\InstBanr.ocx
O16 - DPF: {F281A59C-7B65-11D3-8617-0010830243BD} (AcPreview 控件) - file://D:\Program Files\AutoCAD 2002\AcPreview.ocx
O17 - HKLM\System\CCS\Services\Tcpip\..\{6B4F8005-BBBA-4121-A287-C23C0A06DDCC}: NameServer = 202.103.224.68
O20 - Winlogon Notify: NavLogon - C:\WINDOWS\system32\NavLogon.dll
O23 - NT 服务: C-DillaSrv - C-Dilla Ltd - C:\WINDOWS\system32\DRIVERS\CDANTSRV.EXE
O23 - NT 服务: DefWatch - Unknown owner - D:\Program Files\Symantec_Client_Security\Symantec AntiVirus\DefWatch.exe (file missing)
O23 - NT 服务: msndns - Unknown owner - C:\WINDOWS\msn.exe
O23 - NT 服务: Multi-user Cleanup Service - IBM Corp - D:\Program Files\lotus\notes\ntmulti.exe
O23 - NT 服务: Symantec AntiVirus Client (Norton AntiVirus Server) - Unknown owner - D:\Program Files\Symantec_Client_Security\Symantec AntiVirus\Rtvscan.exe (file missing)
O23 - NT 服务: Rising Proxy  Service (RfwProxySrv) - Beijing Rising Technology Co., Ltd. - d:\program files\rising\rfw\rfwproxy.exe
O23 - NT 服务: Rising Personal Firewall Service (RfwService) - Beijing Rising Technology Co., Ltd. - d:\program files\rising\rfw\rfwsrv.exe
O23 - NT 服务: Rising Process Communication Center (RsCCenter) - Beijing Rising Technology Co., Ltd. - d:\Program Files\Rising\Rav\CCenter.exe
O23 - NT 服务: Rising RealTime Monitor (RsRavMon) - Beijing Rising Technology Co., Ltd. - d:\Program Files\Rising\Rav\Ravmond.exe