我的机器中了backdoor Pcshare.y，ybtlproh.dll，ybtlproh.d1l,ybtlproh.dl1这三个文件无法删除，而且从regedit中也无法删除。各位大虾，怎么才能把他们干掉？谢了。

用procexp查看那个进程使用dll，关闭进程，再把dll文件删掉

工具使用参考http://forum.ikaka.com/topic.asp?board=28&artid=7318038

按照你的方法还是搞不定，头都大了。只好再发个日志让斑斑给看看了。
HijackThis_zww汉化版扫描日志 V1.99.1
保存于      18:09:58, 日期 2005-11-07
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：         
D:\WINNT\System32\smss.exe
D:\WINNT\system32\winlogon.exe
D:\WINNT\system32\services.exe
D:\WINNT\system32\lsass.exe
D:\WINNT\System32\termsrv.exe
d:\program files\rising\rfw\rfwsrv.exe
D:\WINNT\system32\svchost.exe
D:\Program Files\Internet Explorer\iexplore.exe
D:\WINNT\system32\spoolsv.exe
D:\WINNT\System32\msdtc.exe
D:\WINNT\system32\Dfssvc.exe
D:\WINNT\System32\svchost.exe
D:\WINNT\System32\ismserv.exe
D:\WINNT\System32\llssrv.exe
D:\PROGRA~1\MICROS~3\MSSQL\binn\sqlservr.exe
D:\WINNT\system32\ntfrs.exe
D:\WINNT\system32\regsvc.exe
D:\WINNT\System32\locator.exe
D:\WINNT\system32\MSTask.exe
D:\WINNT\System32\WBEM\WinMgmt.exe
D:\WINNT\system32\svchost.exe
D:\WINNT\System32\inetsrv\inetinfo.exe
D:\Program Files\Common Files\System\MSSearch\Bin\mssearch.exe
D:\WINNT\System32\svchost.exe
D:\WINNT\EXPLORER.EXE
d:\program files\rising\rfw\RfwMain.exe
D:\WINNT\System32\igfxtray.exe
D:\WINNT\System32\hkcmd.exe
D:\Program Files\Common Files\Real\Update_OB\realsched.exe
D:\WINNT\system32\internat.exe
D:\Program Files\Microsoft SQL Server\80\Tools\Binn\sqlmangr.exe
D:\WINNT\system32\meadll.exe
D:\WINNT\system32\wuauclt.exe
D:\Documents and Settings\Administrator\桌面\4483172005624221516\HijackThis1991zww.exe

F2 - REG:system.ini: Shell=EXPLORER.EXE
O2 - BHO: QQIEHelper - {54EBD53A-9BC1-480B-966A-843A333CA162} - E:\Program Files\Tencent\QQ\QQIEHelper.dll
O2 - BHO: ShowBarObject Class - {850B69E4-90DB-4F45-8621-891BF35A5B53} - D:\WINNT\system32\alitb\bar.dll (file missing)
O2 - BHO: NTIECatcher Class - {C56CB6B0-0D96-11D6-8C65-B2868B609932} - D:\Program Files\Xi\NetTransport 2\NTIEHelper.dll
O2 - BHO: IE - {D157330A-9EF3-49F8-9A67-4141AC41ADD4} - (no file)
O2 - BHO: AlxTB BHO - {F1FABE79-25FC-46de-8C5A-2C6DB9D64333} - D:\WINNT\system32\AlxTB1.dll (file missing)
O3 - IE工具栏增项: 电台(&R) - {8E718888-423F-11D2-876E-00A0C9082467} - D:\WINNT\system32\msdxm.ocx
O3 - IE工具栏增项: BitCometBar - {3F1ABCDB-A875-46c1-8345-B72A4567E486} - f:\Program Files\BitComet\BitCometBar\BitCometBar0.2.dll
O4 - 启动项HKLM\\Run: [IgfxTray] D:\WINNT\System32\igfxtray.exe
O4 - 启动项HKLM\\Run: [HotKeysCmds] D:\WINNT\System32\hkcmd.exe
O4 - 启动项HKLM\\Run: [TkBellExe] "D:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - 启动项HKLM\\Run: [RfwMain] "D:\Program Files\Rising\Rfw\rfwmain.exe" -Startup
O4 - 启动项HKLM\\Run: [NbFloatBar] D:\Program Files\Netease\NeteaseBar\NbStart.exe
O4 - 启动项HKLM\\Run: [startkey] D:\WINNT\system32\server.exe
O4 - 启动项HKLM\\Run: [NTdhcp] D:\WINNT\system32\meadll.exe
O4 - HKCU\..\Run: [Internat.exe] internat.exe
O4 - HKCU\..\Run: [msnmsgr] "D:\Program Files\MSN Messenger\msnmsgr.exe" /background
O4 - Global Startup: Adobe Gamma Loader.lnk = D:\Program Files\Common Files\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: Microsoft Office.lnk = E:\Program Files\Microsoft Office\Office\OSA9.EXE
O4 - Global Startup: 服务管理器.lnk = D:\Program Files\Microsoft SQL Server\80\Tools\Binn\sqlmangr.exe
O8 - IE右键菜单中的新增项目: Mail to a Friend... - http://client.alexa.com/holiday/script/actions/mailto.htm
O8 - IE右键菜单中的新增项目: 使用影音传送带下载 - D:\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 - D:\Program Files\Xi\NetTransport 2\NTAddList.html
O8 - IE右键菜单中的新增项目: 添加到QQ自定义面板 - E:\Program Files\Tencent\QQ\AddPanel.htm
O8 - IE右键菜单中的新增项目: 添加到QQ表情 - E:\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 - E:\Program Files\Tencent\QQ\SendMMS.htm
O9 - 浏览器额外的按钮: 手机短信 - {00000000-0000-0001-0001-596BAEDD1289} - http://sms.3721.com/ie/index.htm (file missing)
O9 - 浏览器额外的按钮: 商机直通车 - {13b0c05c-ef05-4bf6-b0ea-f6111af25544} - D:\WINNT\system32\alitb\bar.dll (file missing)
O9 - 浏览器额外的按钮: Yahoo 1G电邮 - {507F9113-CD77-4866-BA92-0E86DA3D0B97} - http://cn.mail.yahoo.com/promo/rd1 (file missing)
O9 - 浏览器额外的按钮: 寻宝乐趣多 - {59BC54A2-56B3-44a0-93E5-432D58746E26} - http://hot.3721.com/rd/shop_btn.htm (file missing)
O9 - 浏览器额外的按钮: 上网助手 - {5D73EE86-05F1-49ed-B850-E423120EC338} - http://assistant.3721.com/index.htm?fb=Cns (file missing)
O9 - 浏览器额外的按钮: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - D:\WINNT\web\related.htm
O9 - 浏览器额外的“工具”菜单项: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - D:\WINNT\web\related.htm
O9 - 浏览器额外的按钮: QQ - {c95fe080-8f5d-11d2-a20b-00aa003c157b} - E:\Program Files\Tencent\QQ\QQ.EXE
O9 - 浏览器额外的“工具”菜单项: 腾讯QQ - {c95fe080-8f5d-11d2-a20b-00aa003c157b} - E:\Program Files\Tencent\QQ\QQ.EXE
O9 - 浏览器额外的按钮: (no name) - {DEDEB80D-FA35-45d9-9460-4983E5A8AFE6} - E:\Program Files\Tencent\QQ\QQIEHelper.dll
O9 - 浏览器额外的“工具”菜单项: QQ炫彩工具条设置 - {DEDEB80D-FA35-45d9-9460-4983E5A8AFE6} - E:\Program Files\Tencent\QQ\QQIEHelper.dll
O9 - 浏览器额外的按钮: 情景聊天 - {E5D12C4E-7B4F-11D3-B5C9-0050045C3C96} - http://cn.rd.yahoo.com/home/messenger/bjk/clientbtn/?http://cn.messenger.yahoo.com/ (file missing)
O9 - 浏览器额外的按钮: (no name) - {ECF2E268-F28C-48d2-9AB7-8F69C11CCB71} - http://assistant.3721.com/security1.htm?fb=Cns (file missing)
O9 - 浏览器额外的“工具”菜单项: 修复浏览器 - {ECF2E268-F28C-48d2-9AB7-8F69C11CCB71} - http://assistant.3721.com/security1.htm?fb=Cns (file missing)
O9 - 浏览器额外的按钮: (no name) - {FD00D911-7529-4084-9946-A29F1BDF4FE5} - http://assistant.3721.com/clean1.htm?fb=Cns (file missing)
O9 - 浏览器额外的“工具”菜单项: 清理上网记录 - {FD00D911-7529-4084-9946-A29F1BDF4FE5} - http://assistant.3721.com/clean1.htm?fb=Cns (file missing)
O11 - Options group: [!CNS]  上网助手-地址栏搜索
O16 - DPF: {11111111-1111-1111-1111-111111111123} - ms-its:mhtml:file://c:\yun.mht!http://www.65173.com/2//helpyou.CHM::/test.exe
O16 - DPF: {19501AB3-1F57-4C04-B04F-A3B3A961AA9E} (ShowContent Control) - http://webmail.tyvhost.com/TideTxt.ocx
O16 - DPF: {3D8F74EE-8692-4F8F-B8D2-7522E732519E} (WebActivater Control) - http://game.qq.com/QQGame2.cab
O16 - DPF: {B38870E4-7ECB-40DA-8C6A-595F0A5519FF} (MsnMessengerSetupDownloadControl Class) - http://messenger.msn.com/download/msnmessengersetupdownloader.cab
O16 - DPF: {BC207F7D-3E63-4ACA-99B5-FB5F8428200C} - http://bar.baidu.com/update/IESearch.cab
O17 - HKLM\System\CCS\Services\Tcpip\Parameters: Domain = zgxzw.com
O17 - HKLM\System\CCS\Services\Tcpip\..\{0B345E21-8DDB-456A-A1D3-62DADD786C6A}: NameServer = 192.168.8.1
O17 - HKLM\System\CS1\Services\Tcpip\Parameters: Domain = zgxzw.com
O17 - HKLM\System\CS1\Services\Tcpip\..\{0B345E21-8DDB-456A-A1D3-62DADD786C6A}: NameServer = 192.168.8.1
O17 - HKLM\System\CS2\Services\Tcpip\Parameters: Domain = zgxzw.com
O17 - HKLM\System\CS2\Services\Tcpip\..\{0B345E21-8DDB-456A-A1D3-62DADD786C6A}: NameServer = 192.168.8.1
O17 - HKLM\System\CS3\Services\Tcpip\Parameters: Domain = zgxzw.com
O17 - HKLM\System\CS3\Services\Tcpip\..\{0B345E21-8DDB-456A-A1D3-62DADD786C6A}: NameServer = 192.168.8.1
O18 - 列举现有的协议: ms-help - {314111C7-A502-11D2-BBCA-00C04F8EC294} - D:\Program Files\Common Files\Microsoft Shared\Help\hxds.dll
O20 - Winlogon Notify: igfxcui - D:\WINNT\SYSTEM32\igfxsrvc.dll
O23 - NT 服务: Logical Disk Manager Administrative Service (dmadmin) - VERITAS Software Corp. - D:\WINNT\System32\dmadmin.exe
O23 - NT 服务: Macromedia Licensing Service - Unknown owner - D:\Program Files\Common Files\Macromedia Shared\Service\Macromedia Licensing.exe
O23 - NT 服务: Rising Personal Firewall Service (RfwService) - Beijing Rising Technology Corporation Limited - d:\program files\rising\rfw\rfwsrv.exe
O23 - NT 服务: Windows Network Management (WinMgnt) - Unknown owner - D:\WINNT\SYSTEM\SERVICES.EXE

日志中的meadll.exe杀不掉，每次启动的时候都会重新生成。

D:\WINNT\SYSTEM\SERVICES.EXE也删不掉。

用procexp从进程中找到杀进程，删文件

要不
用Autoruns保存一个日志发上来
日志保存方法:选择File->Save菜单项
保存日志时注意选择Options->Hide Microsoft Entries菜单项

工具使用参考http://forum.ikaka.com/topic.asp?board=28&artid=7318038

用优化大师等禁止启动！不行吗？

O4 - 启动项HKLM\\Run: [startkey] D:\WINNT\system32\server.exe
O4 - 启动项HKLM\\Run: [NTdhcp] D:\WINNT\system32\meadll.exe

O23 - NT 服务: Windows Network Management (WinMgnt) - Unknown owner - D:\WINNT\SYSTEM\SERVICES.EXE