最近在MSN上收了一条消息，就类似QQ小尾巴之类的病毒，但是中了之后，无法上网，经常无故死机，任务管理器也打不开。。。请问是什么病毒，是公司的电脑，不能上网很头痛啊。。。

这是我刚扫描的结果，大家看看啊~~~
Logfile of HijackThis v1.99.1
Scan saved at 15:38:04, on 2005-10-17
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

运行进程:           
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
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\KAV2005\KWatch.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\KAV2005\KPfwSvc.EXE
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\hkcmd.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\KAV2005\KAVStart.exe
C:\WINDOWS\system32\rundll32.exe
E:\PROGRA~1\ALIBABA\TRADEM~1\TradeManager.exe
C:\WINDOWS\system32\ctfmon.exe
C:\KAV2005\KMailMon.EXE
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\Yahoo!\Messenger\ypager.exe
C:\KAV2005\Update.EXE
E:\Powerword 2006\xdict.exe
E:\Powerword 2006\update.exe
C:\Program Files\Internet Explorer\iexplore.exe
c:\windows\system32\alitb\__new\update.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\KAV2005\KAV32.EXE
C:\WINDOWS\system32\taskmgr.exe
C:\Program Files\Internet Explorer\iexplore.exe
G:\20050222151158931\HijackThis v1.99.1 汉化版\HijackThis.exe

R3 - URLSearchHook: 上网助手 - {BB936323-19FA-4521-BA29-ECA6A121BC78} - C:\PROGRA~1\3721\Assist\asbar.dll
F2 - REG:system.ini: UserInit=userinit.exe
O2 - BHO: KOSIE HelperInternet Explorer Web Content Guard  - {1B2F92A1-CDAF-4511-9382-91E3F5CE0880} - C:\Program Files\KOS\KOSIEBar.dll
O2 - BHO: ShowBarObject Class - {850B69E4-90DB-4F45-8621-891BF35A5B53} - c:\windows\system32\alitb\__new\bar.dll
O2 - BHO: AssistII - {BB936323-19FA-4521-BA29-ECA6A121BC78} - C:\PROGRA~1\3721\Assist\asbar.dll
O2 - BHO: IE - {D157330A-9EF3-49F8-9A67-4141AC41ADD4} - C:\WINDOWS\downlo~1\CnsHook.dll
O3 - Toolbar: (no name) - {E0E899AB-F487-11D5-8D29-0050BA6940E3} - (没有文件) 
O3 - Toolbar: 上网助手 - {BB936323-19FA-4521-BA29-ECA6A121BC78} - C:\PROGRA~1\3721\Assist\asbar.dll
O3 - Toolbar: 金山毒霸安全助手 - {EF72500A-C234-46C4-BF0A-9AA6913DDF34} - C:\Program Files\KOS\KOSIEBar.dll
O4 - HKLM\..\Run: [IMJPMIG8.1] "C:\WINDOWS\IME\imjp8_1\IMJPMIG.EXE" /Spoil /RemAdvDef /Migration32
O4 - HKLM\..\Run: [PHIME2002ASync] C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /SYNC
O4 - HKLM\..\Run: [PHIME2002A] C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /IMEName
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [StormCodec_Helper] "C:\Program Files\Ringz Studio\Storm Codec\StormSet.exe" /S /opti
O4 - HKLM\..\Run: [KavStart] "C:\KAV2005\KAVStart.exe" -startup
O4 - HKLM\..\Run: [helper.dll] C:\WINDOWS\system32\rundll32.exe C:\PROGRA~1\3721\helper.dll,Rundll32
O4 - HKLM\..\Run: [assistse] "C:\PROGRA~1\3721\assistse.exe"
O4 - HKLM\..\Run: [CnsMin] Rundll32.exe C:\WINDOWS\downlo~1\CnsMin.dll,Rundll32
O4 - HKLM\..\Run: [TradeManager] E:\PROGRA~1\ALIBABA\TRADEM~1\TradeManager -hideframe
O4 - HKLM\..\Run: [Alitalk] C:\PROGRA~1\阿里巴巴\贸易通\AliTalk.EXE -hideframe
O4 - HKLM\..\Run: [Install Alitalk] C:\WINDOWS\temp\alitalk\alitalk.exe -hideframe
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [KavPFW] "C:\KAV2005\KavPFW.exe"
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [Yahoo! Pager] "C:\Program Files\Yahoo!\Messenger\ypager.exe" -quiet
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [SonudMan] C:\WINDOWS\SonudMan.exe
O4 - Startup: 腾讯TM.lnk = C:\Program Files\Tencent\TM\TMShell.exe
O4 - Global Startup: 金山词霸 2006.lnk = E:\Powerword 2006\xdict.exe
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O8 - Extra context menu item: !搜一搜 - res://C:\WINDOWS\downlo~1\CnsMinEx.dll/1003
O8 - Extra context menu item: 导出到 Microsoft Office Excel(&X) - res://c:\PROGRA~1\MICROS~3\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: 添加到QQ自定义面板 - D:\My Documents\Program Files\QQ2004\AddPanel.htm
O8 - Extra context menu item: 添加到QQ表情 - D:\My Documents\Program Files\QQ2004\AddEmotion.htm
O8 - Extra context menu item: 用QQ彩信发送该图片 - D:\My Documents\Program Files\QQ2004\SendMMS.htm
O8 - Extra context menu item: 豪杰超级解霸V8实时播放 - C:\Herosoft\HeroV8\MPURLGET.HTM
O9 - Extra button: 手机短信 - {00000000-0000-0001-0001-596BAEDD1289} - http://sms.3721.com/ie/index.htm (文件故障)
O9 - Extra button: 商机直通车 - {13b0c05c-ef05-4bf6-b0ea-f6111af25544} - c:\windows\system32\alitb\__new\bar.dll
O9 - Extra button: 豪杰超级解霸V8 - {367E0A21-8601-4986-9C9A-153BF5ACA118} - C:\Herosoft\HeroV8\STHSDVD.EXE
O9 - Extra 'Tools' menuitem: 豪杰超级解霸V8 - {367E0A21-8601-4986-9C9A-153BF5ACA118} - C:\Herosoft\HeroV8\STHSDVD.EXE
O9 - Extra button: Yahoo 1G电邮 - {507F9113-CD77-4866-BA92-0E86DA3D0B97} - http://cn.mail.yahoo.com/promo/rd1 (文件故障)
O9 - Extra button: 寻宝乐趣多 - {59BC54A2-56B3-44a0-93E5-432D58746E26} - http://hot.3721.com/rd/shop_btn.htm (文件故障)
O9 - Extra button: 上网助手 - {5D73EE86-05F1-49ed-B850-E423120EC338} - http://assistant.3721.com/index.htm?fb=Cns (文件故障)
O9 - Extra button: Yahoo! Messenger - {E5D12C4E-7B4F-11D3-B5C9-0050045C3C96} - C:\PROGRA~1\YAHOO!\MESSEN~1\YPAGER.EXE
O9 - Extra 'Tools' menuitem: Yahoo! Messenger - {E5D12C4E-7B4F-11D3-B5C9-0050045C3C96} - C:\PROGRA~1\YAHOO!\MESSEN~1\YPAGER.EXE
O9 - Extra button: (no name) - {ECF2E268-F28C-48d2-9AB7-8F69C11CCB71} - http://assistant.3721.com/security1.htm?fb=Cns (文件故障)
O9 - Extra 'Tools' menuitem: 修复浏览器 - {ECF2E268-F28C-48d2-9AB7-8F69C11CCB71} - http://assistant.3721.com/security1.htm?fb=Cns (文件故障)
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra button: (no name) - {FD00D911-7529-4084-9946-A29F1BDF4FE5} - http://assistant.3721.com/clean1.htm?fb=Cns (文件故障)
O9 - Extra 'Tools' menuitem: 清理上网记录 - {FD00D911-7529-4084-9946-A29F1BDF4FE5} - http://assistant.3721.com/clean1.htm?fb=Cns (文件故障)
O11 - Options group: [!CNS]  上网助手-地址栏搜索
O16 - DPF: {0CA54D3F-CEAE-48AF-9A2B-31909CB9515D} (Edit Class) - https://www.sz1.cmbchina.com/download/CMBEdit.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/MsnMessengerSetupDownloader.cab
O16 - DPF: {F2EB8999-766E-4BF6-AAAD-188D398C0D0B} (PBActiveX40 Control) - http://www4.cmbchina.com/download/pb42.cab
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (文件故障)
O20 - Winlogon Notify: igfxcui - C:\WINDOWS\SYSTEM32\igfxsrvc.dll

不知道。。。扫描完了就这样的。。。MSN开了也一直无响应，强制结束进程也不行