我和你一样~~~不过可以试一下这个方法
Trojan.Spy.Agent.bno杀不掉

HijackThis_815汉化版扫描日志 V1.99.1
保存于 9:02:17, 日期 2006-9-18
操作系统： Windows 2000 SP4 (WinNT 5.00.2195)
浏览器： Internet Explorer v6.00 SP1 (6.00.2800.1106)

当前运行的进程：
C:\WINNT\System32\smss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\System32\SCardSvr.exe
C:\WINNT\system32\svchost.exe
E:\Rising\Rav\CCenter.exe
E:\Rising\Rav\Ravmond.exe
C:\WINNT\system32\spoolsv.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\mshost.exe
C:\WINNT\system32\regsvc.exe
C:\WINNT\system32\MSTask.exe
E:\VMware\VMware Workstation\vmware-authd.exe
E:\Rising\Rav\RavStub.exe
C:\Program Files\Common Files\VMware\VMware Virtual Image Editing\vmount2.exe
C:\WINNT\Explorer.EXE
C:\WINNT\system32\vmnat.exe
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\WINNT\system32\mspmspsv.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\system32\vmnetdhcp.exe
C:\WINNT\SOUNDMAN.EXE
E:\Rising\Rav\RavTask.exe
C:\WINNT\system32\BHDCRegC.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\WINNT\system32\internat.exe
E:\Rising\Rav\Ravmon.exe
E:\Rising\Rfw\rfwsrv.exe
E:\Rising\Rfw\RfwMain.exe
E:\Rising\Rav\Rav.exe
E:\Rising\Rav\RsLogVw.exe
C:\Program Files\Internet Explorer\iexplore.exe
E:\DuDu\Speed\dudupros.exe
E:\down\HijackThis1991zww.exe

O2 - BHO: DuDu.com - {00018593-C6BD-46F7-9349-DBA1AA674C90} - E:\DuDu\Speed\dddiemon.dll
O2 - BHO: (no name) - {4BBC1A4D-DD20-4980-A645-2E13F6FC286D} - C:\WINNT\system32\3721.1.dll (file missing)
O3 - IE工具栏增项: @msdxmLC.dll,-1@2052,电台(&R) - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\system32\msdxm.ocx
O3 - IE工具栏增项: FlashGet Bar - {E0E899AB-F487-11D5-8D29-0050BA6940E3} - D:\FlashGet\fgiebar.dll
O3 - IE工具栏增项: 卡卡上网安全助手 - {DB9ECD4F-FB8F-4311-B3CE-90B976C2707C} - C:\WINNT\system32\KakaTool.dll
O4 - 启动项HKLM\\Run: [Synchronization Manager] mobsync.exe /logon
O4 - 启动项HKLM\\Run: [SoundMan] SOUNDMAN.EXE
O4 - 启动项HKLM\\Run: [IMSCMIG40W] C:\PROGRA~1\COMMON~1\MICROS~1\IME\IMSC40W\IMSCMIG.EXE /SetPreload /Log
O4 - 启动项HKLM\\Run: [RfwMain] "E:\Rising\Rfw\rfwmain.exe" -Startup
O4 - 启动项HKLM\\Run: [RavTask] "E:\Rising\Rav\RavTask.exe" -system
O4 - 启动项HKLM\\Run: [SiSPower] Rundll32.exe SiSPower.dll,ModeAgent
O4 - 启动项HKLM\\Run: [BHDCRegC] C:\WINNT\system32\BHDCRegC.exe
O4 - 启动项HKLM\\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKCU\..\Run: [Internat.exe] internat.exe
O4 - Global Startup: Adobe Gamma Loader.lnk = C:\Program Files\Common Files\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office\OSA9.EXE
O8 - IE右键菜单中的新增项目: &使用DuDu下载 - res://E:\DuDu\Speed\dddmext.dll/202
O8 - IE右键菜单中的新增项目: &使用DuDu下载全部链接 - res://E:\DuDu\Speed\dddmext.dll/203
O8 - IE右键菜单中的新增项目: &使用DuDu下载选择链接 - res://E:\DuDu\Speed\dddmext.dll/204
O8 - IE右键菜单中的新增项目: 使用网际快车下载 - D:\FlashGet\jc_link.htm
O8 - IE右键菜单中的新增项目: 使用网际快车下载全部链接 - D:\FlashGet\jc_all.htm
O8 - IE右键菜单中的新增项目: 用比特精灵下载(&B) - F:\BitSpirit\bsurl.htm
O9 - 浏览器额外的按钮: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINNT\web\related.htm
O9 - 浏览器额外的“工具”菜单项: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINNT\web\related.htm
O15 - “受信任的站点”中添加项: http://www.icbc.com.cn
O16 - DPF: {0EB487C8-E9AC-43A6-8C4C-083999B0622F} (InfosecCertInstall Class) - https://mybank.icbc.com.cn/icbc/perbank/certInStall.dll
O16 - DPF: {62B938C4-4190-4F37-8CF0-A92B0A91CC77} (InfoSecNetSign Class) - https://mybank.icbc.com.cn/icbc/NetSign.dll
O16 - DPF: {8D9E0B29-563C-4226-86C1-5FF2AE77E1D2} (AxSubmitControl Class) - https://mybank.icbc.com.cn/icbc/perbank/AxSafeControls.cab
O16 - DPF: {BE833F39-1E0C-468C-BA70-25AAEE55775E} (System Requirements Lab) - http://www.systemrequirementslab.com/sysreqlab.cab
O16 - DPF: {D1056C7C-E30B-4234-9A4B-7E1038B167A7} (RootCertInstall Class) - https://mybank.icbc.com.cn/icbc/perbank/RootCert.cab
O16 - DPF: {DA215190-98B2-47DE-AE24-DA95481DFFBA} (AxUSBKey Class) - https://mybank.icbc.com.cn/icbc/perbank/AxUSBKey.CAB
O16 - DPF: {E9707834-5BF7-4CFF-A639-398427DE1991} (IcbcSslCacheCleanerCtrl Class) - http://www.icbc.com.cn/left/IcbcSslCacheCleaner.cab
O16 - DPF: {EC309509-9C51-44DC-9AB8-F2322C80D7F2} (ComputerInfo Class) - http://rst.lenovo.com.cn/ibis/client/mail/download/InfoCollect.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{3EC9A59B-EBB2-442C-BFA7-CA1A30ECCE64}: NameServer = 192.168.1.1
O17 - HKLM\System\CS1\Services\Tcpip\..\{3EC9A59B-EBB2-442C-BFA7-CA1A30ECCE64}: NameServer = 192.168.1.1
O17 - HKLM\System\CS2\Services\Tcpip\..\{3EC9A59B-EBB2-442C-BFA7-CA1A30ECCE64}: NameServer = 192.168.1.1
O23 - NT 服务: Adobe LM Service - Unknown owner - C:\Program Files\Common Files\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - NT 服务: Logical Disk Manager Administrative Service (dmadmin) - VERITAS Software Corp. - C:\WINNT\System32\dmadmin.exe
O23 - NT 服务: Macromedia Licensing Service - Unknown owner - C:\Program Files\Common Files\Macromedia Shared\Service\Macromedia Licensing.exe
O23 - NT 服务: host Service For Windows (mshost) - Unknown owner - C:\WINNT\mshost.exe
O23 - NT 服务: Rising Proxy Service (RfwProxySrv) - Beijing Rising Technology Co., Ltd. - e:\rising\rfw\rfwproxy.exe
O23 - NT 服务: Rising Personal Firewall Service (RfwService) - Beijing Rising Technology Co., Ltd. - E:\Rising\Rfw\rfwsrv.exe
O23 - NT 服务: Rising Process Communication Center (RsCCenter) - Beijing Rising Technology Co., Ltd. - E:\Rising\Rav\CCenter.exe
O23 - NT 服务: RsRavMon Service (RsRavMon) - Beijing Rising Technology Co., Ltd. - E:\Rising\Rav\Ravmond.exe
O23 - NT 服务: VMware Authorization Service (VMAuthdService) - VMware, Inc. - E:\VMware\VMware Workstation\vmware-authd.exe
O23 - NT 服务: VMware DHCP Service (VMnetDHCP) - VMware, Inc. - C:\WINNT\system32\vmnetdhcp.exe
O23 - NT 服务: VMware Virtual Mount Manager Extended (vmount2) - VMware, Inc. - C:\Program Files\Common Files\VMware\VMware Virtual Image Editing\vmount2.exe
O23 - NT 服务: VMware NAT Service - VMware, Inc. - C:\WINNT\system32\vmnat.exe


解决方法

O23 - NT 服务: host Service For Windows (mshost) - Unknown owner - C:\WINNT\mshost.exe
灰鸽子..安全模式...打开注册表编辑器，展开：HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
搜索mshost删除...
删除
C:\WINNT\mshost.exe

请注意以后看到3721就干掉它……更不要再安装它了……

全删了，谢谢各位，还是好人多啊

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\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:\WINDOWS\system32\Ati2evxx.exe
c:\program files\rising\rfw\rfwsrv.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Rising\Rav\RavStub.exe
c:\program files\rising\rfw\RfwMain.exe
C:\Program Files\Rising\Rav\RavTask.exe
C:\Program Files\Rising\Rav\Ravmon.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\WINDOWS\system32\ctfmon.exe
G:\2005珊瑚版\qq\QQ.exe
G:\2005珊瑚版\qq\TMDlls\TIMPlatform.exe
C:\WINDOWS\system32\conime.exe
C:\WINDOWS\mshost.exe
E:\奇迹\Musky3.6\MUSky.exe
E:\奇迹\MU1_02e_full(Chs)\main.exe
G:\2005珊瑚版\qq\QQ.exe
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\WINDOWS\system32\PYINTAU.EXE
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\WINDOWS\system32\NOTEPAD.EXE
C:\Documents and Settings\new\桌面\Hijackthis1991zww\HijackThis1991zww.exe

F2 - REG:system.ini: UserInit=C:\WINDOWS\system32\Userinit.exe
O2 - BHO: (no name) - {4BBC1A4D-DD20-4980-A645-2E13F6FC286D} - C:\WINDOWS\system32\3721.1.dll (file missing)
O2 - BHO: ThunderBHO - {889D2FEB-5411-4565-8998-1DD2C5261283} - C:\Program Files\Thunder Network\Thunder\ComDlls\XunLeiBHO_001.dll
O2 - BHO: (no name) - {A9930D97-9CF0-42A0-A10D-4F28836579D5} - C:\PROGRA~1\KuGoo3\KUGOO3~1.OCX
O4 - 启动项HKLM\\Run: [RavTask] "C:\Program Files\Rising\Rav\RavTask.exe" -system
O4 - 启动项HKLM\\Run: [RfwMain] "C:\Program Files\Rising\Rfw\rfwmain.exe" -Startup
O4 - 启动项HKLM\\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe"  -osboot
O4 - 启动项HKLM\\RunOnce: [RavStub] "C:\Program Files\Rising\Rav\ravstub.exe" /RUNONCE
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O8 - IE右键菜单中的新增项目: &使用迅雷下载 - C:\Program Files\Thunder Network\Thunder\Program\GetUrl.htm
O8 - IE右键菜单中的新增项目: &使用迅雷下载全部链接 - C:\Program Files\Thunder Network\Thunder\Program\GetAllUrl.htm
O8 - IE右键菜单中的新增项目: 上传到QQ网络硬盘 - G:\2005珊瑚版\qq\AddToNetDisk.htm
O8 - IE右键菜单中的新增项目: 使用KuGoo3下载(&K) - C:\Program Files\KuGoo3\KuGoo3DownX.htm
O8 - IE右键菜单中的新增项目: 使用影音传送带下载 - C:\Program Files\Xi\NetTransport 2\NTAddLink.html
O8 - IE右键菜单中的新增项目: 使用影音传送带下载全部链接 - C:\Program Files\Xi\NetTransport 2\NTAddList.html
O8 - IE右键菜单中的新增项目: 导出到 Microsoft Office Excel(&X) - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O8 - IE右键菜单中的新增项目: 添加到QQ自定义面板 - G:\2005珊瑚版\qq\AddPanel.htm
O8 - IE右键菜单中的新增项目: 添加到QQ表情 - G:\2005珊瑚版\qq\AddEmotion.htm
O8 - IE右键菜单中的新增项目: 用QQ彩信发送该图片 - G:\2005珊瑚版\qq\SendMMS.htm
O9 - 浏览器额外的按钮: 微软 - {6096E38F-5AC1-4391-8EC4-75DFA92FB32F} - http://www.microsoft.com/china/index.htm (file missing)
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O17 - HKLM\System\CCS\Services\Tcpip\..\{A19BBEFA-367A-4CC0-9860-0014293303B4}: NameServer = 202.103.224.68 202.103.225.68
O17 - HKLM\System\CCS\Services\Tcpip\..\{EAAC1827-1928-44DF-BAE1-8005B51E4F53}: NameServer = 202.103.224.68,202.103.225.68
O23 - NT 服务: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - NT 服务: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - NT 服务: host Service For Windows (mshost) - Unknown owner - C:\WINDOWS\mshost.exe
O23 - NT 服务: Rising Proxy  Service (RfwProxySrv) - Beijing Rising Technology Co., Ltd. - c:\program files\rising\rfw\rfwproxy.exe
O23 - NT 服务: Rising Personal Firewall Service (RfwService) - Beijing Rising Technology Co., Ltd. - c:\program files\rising\rfw\rfwsrv.exe
O23 - NT 服务: Rising Process Communication Center (RsCCenter) - Beijing Rising Technology Co., Ltd. - C:\Program Files\Rising\Rav\CCenter.exe
O23 - NT 服务: RsRavMon Service (RsRavMon) - Beijing Rising Technology Co., Ltd. - C:\Program Files\Rising\Rav\Ravmond.exe

帮下
谢谢