我的电脑这两天老提示说有病毒，可是全面杀毒，什么也没有？好像是有个什么a4.exe的文件多。请问高手们，这是怎么回事呀，谢谢了！！！

启动项目
注册表
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]
<ctfmon.exe><C:\WINDOWS\system32\ctfmon.exe> [(Verified)Microsoft Corporation]
<swg><; :C:\Program Files\Google\GoogleToolbarNotifier\1.0.720.3640\GoogleToolbarNotifier.exe> [N/A]
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
<AtiPTA><atiptaxx.exe> [ATI Technologies, Inc.]
<WebThunder><C:\Program Files\Thunder Network\WebThunder\WebThunder.exe> [深圳市迅雷网络技术有限公司]
<RavTask><"C:\Program Files\Rising\Rav\RavTask.exe" -system> [Beijing Rising Technology Co., Ltd.]
<KernelFaultCheck><%systemroot%\system32\dumprep 0 -k> [N/A]
<WinVNC><"c:\winsock\winvnc\winvnc.exe" -servicehelper> [N/A]
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon]
<shell><Explorer.exe> [(Verified)Microsoft Corporation]
<Userinit><C:\WINDOWS\system32\userinit.exe,> [(Verified)Microsoft Corporation]
<UIHost><logonui.exe> [Microsoft Corporation]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellExecuteHooks]
<{AEB6717E-7E19-11d0-97EE-00C04FD91972}><shell32.dll> [(Verified)Microsoft Corporation]
<{32CD708B-60A7-4C00-9377-D73EAA495F0F}><C:\WINDOWS\system32\RavExt.dll> [Beijing Rising Technology Co., Ltd.]
<{08315C1A-9BA9-4B7C-A432-26885F78DF28}><C:\Program Files\Common Files\Microsoft Shared\MSINFO\SysInfo.wmp> [N/A]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad]
<PostBootReminder><%SystemRoot%\system32\SHELL32.dll> [(Verified)Microsoft Corporation]
<CDBurn><%SystemRoot%\system32\SHELL32.dll> [(Verified)Microsoft Corporation]
<WebCheck><%SystemRoot%\system32\webcheck.dll> [(Verified)Microsoft Corporation]
<SysTray><C:\WINDOWS\system32\stobject.dll> [(Verified)Microsoft Corporation]
<QQHelper><C:\WINDOWS\Downloaded Program Files\jvm.dll> [N/A]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\crypt32chain]
<WinlogonNotify: crypt32chain><crypt32.dll> [(Verified)Microsoft Corporation]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\cryptnet]
<WinlogonNotify: cryptnet><cryptnet.dll> [(Verified)Microsoft Corporation]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\cscdll]
<WinlogonNotify: cscdll><cscdll.dll> [(Verified)Microsoft Corporation]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\ScCertProp]
<WinlogonNotify: ScCertProp><wlnotify.dll> [(Verified)Microsoft Corporation]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\Schedule]
<WinlogonNotify: Schedule><wlnotify.dll> [(Verified)Microsoft Corporation]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\SensLogn]
<WinlogonNotify: SensLogn><WlNotify.dll> [(Verified)Microsoft Corporation]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\wlballoon]
<WinlogonNotify: wlballoon><wlnotify.dll> [(Verified)Microsoft Corporation]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\SharedTaskScheduler]
<{438755C2-A8BA-11D1-B96B-00A0C90312E1}><%SystemRoot%\system32\browseui.dll> [(Verified)Microsoft Corporation]
<{8C7461EF-2B13-11d2-BE35-3078302C2030}><%SystemRoot%\system32\browseui.dll> [(Verified)Microsoft Corporation]

启动文件夹
N/A

==================================
服务
[Ati HotKey Poller / Ati HotKey Poller]
<C:\WINDOWS\system32\Ati2evxx.exe><ATI Technologies Inc.>
[ATI Smart / ATI Smart]
<C:\WINDOWS\system32\ati2sgag.exe><>
[Event Service / AtWork]
<C:\WINDOWS\System32\svchost.exe -k netsvcs-->C:\WINDOWS\system32\mmvrbb51.dll><Microsoft Corporation>
[Human Interface Device Access / HidServ]
<C:\WINDOWS\System32\svchost.exe -k netsvcs-->%SystemRoot%\System32\hidserv.dll><N/A>
[Rising Process Communication Center / RsCCenter]
<"C:\Program Files\Rising\Rav\CCenter.exe"><Beijing Rising Technology Co., Ltd.>
[RsRavMon Service / RsRavMon]
<"C:\Program Files\Rising\Rav\Ravmond.exe"><Beijing Rising Technology Co., Ltd.>
[Serv-U FTP 服务器 / Serv-U]
<C:\Documents and Settings\Administrator\桌面\Serv-U6301\ServUDaemon.exe><Rhino Software, Inc. +1(262) 560-9627>
[Security Machine Manager / SoSCAR]
<C:\WINDOWS\SYSTEM32\RUN32.EXE C:\WINDOWS\SYSTEM32\WBEM\MRPBLT32.DLL,Export 1087><N/A>
[VNC Server / winvnc]
<"c:\winsock\winvnc\winvnc.exe" -service><N/A>
[Portable Media Serial Number Service / WmdmPmSN]
<C:\WINDOWS\System32\svchost.exe -k netsvcs-->C:\WINDOWS\system32\mspmsnsv.dll><Microsoft Corporation>

==================================
驱动程序
[Apaidi / Apaidi]
<\??\C:\WINDOWS\system32\drivers\Apaidi.sys><N/A>
[ati2mtag / ati2mtag]
<system32\DRIVERS\ati2mtag.sys><ATI Technologies Inc.>
[atitray / atitray]
<\??\C:\PROGRA~1\NGOATI~1.3\ATT\atitray.sys><N/A>
[Broadcom 570x Gigabit Integrated Controller / b57w2k]
<system32\DRIVERS\b57xp32.sys><Broadcom Corporation>
[Rising TDI Base Driver / BaseTDI]
<System32\DRIVERS\BaseTDI.SYS><Beijing Rising Technology Co., Ltd.>
[ExpScaner / ExpScaner]
<\??\C:\Program Files\Rising\Rav\ExpScan.sys><>
[HOOKAPI / HOOKAPI]
<\??\C:\PROGRAM FILES\RISING\RAV\HookApi.Sys><瑞星软件有限公司>
[HookCont / HookCont]
<\??\C:\Program Files\Rising\Rav\HOOKCONT.sys><Rising tech Co. ltd>
[HookReg / HookReg]
<\??\C:\Program Files\Rising\Rav\HookReg.sys><>
[HookSys / HookSys]
<\??\C:\Program Files\Rising\Rav\HookSys.sys><Rising>
[MEMSCAN / MEMSCAN]
<\??\C:\Program Files\Rising\Rav\MEMSCAN.sys><瑞星软件有限公司>
[Netgroup Packet Filter / NPF]
<system32\DRIVERS\npf.sys><CACE Technologies>
[paraudio / paraudio]
<\??\C:\WINDOWS\system32\drivers\paraudio.sys><Microsoft Corporation>
[Direct Parallel Link Driver / Ptilink]
<system32\DRIVERS\ptilink.sys><Parallel Technologies, Inc.>
[Secdrv / Secdrv]
<system32\DRIVERS\secdrv.sys><N/A>
[Audio Driver (WDM) - SigmaTel CODEC / STAC97]
<system32\drivers\stac97.sys><SigmaTel, Inc.>
[Microcode Update Driver / Update]
<system32\DRIVERS\update.sys><Microsoft Corporation>

浏览器加载项
[WebThunder Browser Helper]
{00000AAA-A363-466E-BEF5-9BB68697AA7F} <C:\Program Files\Thunder Network\WebThunder\WebThunderBHO_015.dll, Thunder Networking Technologies,LTD>
[启动Web迅雷]
{962EFB8E-2683-42d4-AC74-AAA4C759B9C6} <http://my.xunlei.com, N/A>
[全能助手广告拦截专家]
{ED51E9A3-16C5-4236-99E0-9F093B021433} <C:\Program Files\TweakAssist\AssistIEBar.dll, 全能助手工作室>
[WebThunder Browser Helper]
{00000AAA-A363-466E-BEF5-9BB68697AA7F} <C:\Program Files\Thunder Network\WebThunder\WebThunderBHO_015.dll, Thunder Networking Technologies,LTD>
[全能助手广告拦截专家]
{ED51E9A3-16C5-4236-99E0-9F093B021433} <C:\Program Files\TweakAssist\AssistIEBar.dll, 全能助手工作室>
[使用Web迅雷下载]
<C:\Program Files\Thunder Network\WebThunder\GetUrl.htm, N/A>
[使用Web迅雷下载全部链接]
<C:\Program Files\Thunder Network\WebThunder\GetAllUrl.htm, N/A>
[导出到 Microsoft Office Excel(&X)]
<res://C:\PROGRA~1\MICROS~1\OFFICE11\EXCEL.EXE/3000, N/A>
[添加到广告杀手]
<C:\Program Files\TweakAssist\AdKiller.htm, N/A>

==================================
正在运行的进程
[PID: 544][\SystemRoot\System32\smss.exe] [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 600][\??\C:\WINDOWS\system32\csrss.exe] [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 624][\??\C:\WINDOWS\system32\winlogon.exe] [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[C:\WINDOWS\system32\Ati2evxx.dll] [ATI Technologies Inc., 6.14.10.4129]
[PID: 668][C:\WINDOWS\system32\services.exe] [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 680][C:\WINDOWS\system32\lsass.exe] [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 820][C:\WINDOWS\system32\Ati2evxx.exe] [ATI Technologies Inc., 6.14.10.4129]
[C:\WINDOWS\system32\Ati2edxx.dll] [ATI Technologies, Inc., 6, 14, 10, 2500]
[PID: 848][C:\WINDOWS\system32\svchost.exe] [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 928][C:\WINDOWS\system32\svchost.exe] [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 1044][C:\Program Files\Rising\Rav\CCenter.exe] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 3]
[PID: 1076][C:\WINDOWS\System32\svchost.exe] [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 1204][C:\Program Files\Rising\Rav\Ravmond.exe] [Beijing Rising Technology Co., Ltd., 18, 0, 1, 35]
[C:\Program Files\Rising\Rav\BWList.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 19]
[C:\Program Files\Rising\Rav\RsCommX.dll] [rising, 18, 0, 0, 1]
[C:\Program Files\Rising\Rav\RSAPPMGR.DLL] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 2]
[C:\Program Files\Rising\Rav\CfgDll.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 11]
[C:\Program Files\Rising\Rav\RSCOMMON.DLL] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 4]
[C:\Program Files\Rising\Rav\RsLog.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 20]
[C:\Program Files\Rising\Rav\HOOKSYS.dll] [Beijing Rising Technology Co., Ltd., 18, 1, 0, 11]
[C:\Program Files\Rising\Rav\Scanner.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 32]
[C:\Program Files\Rising\Rav\libload.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 10]
[C:\Program Files\Rising\Rav\VirusLib.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 12]
[C:\Program Files\Rising\Rav\regmon.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 6]
[C:\Program Files\Rising\Rav\HookWeb.dll] [rising, 18, 0, 0, 2]
[C:\Program Files\Rising\Rav\MemMon.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 10]
[C:\Program Files\Rising\Rav\expscan.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 4]
[C:\Program Files\Rising\Rav\mPorts.dll] [Beijing Rising Technology Co., Ltd., 4, 0, 0, 3]
[C:\Program Files\Rising\Rav\MailMon.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 5]
[C:\Program Files\Rising\Rav\SpamEng.dll] [N/A, 18, 0, 0, 6]
[C:\Program Files\Rising\Rav\engine.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 34]
[C:\Program Files\Rising\Rav\PostTrt.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 17]
[C:\Program Files\Rising\Rav\UnExe.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 11]
[C:\Program Files\Rising\Rav\ScanExec.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 15]
[C:\Program Files\Rising\Rav\ScanEx.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 30]
[C:\Program Files\Rising\Rav\RSUnpack.dll] [Beijing Rising Technology Co., Ltd., 1, 0, 0, 18]
[C:\Program Files\Rising\Rav\NvFile.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 7]
[C:\Program Files\Rising\Rav\ScanMac.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 10]
[C:\Program Files\Rising\Rav\ScanSct.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 19]
[C:\Program Files\Rising\Rav\Unpacker.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 5]
[PID: 1340][C:\WINDOWS\system32\Ati2evxx.exe] [ATI Technologies Inc., 6.14.10.4129]
[C:\WINDOWS\system32\Ati2edxx.dll] [ATI Technologies, Inc., 6, 14, 10, 2500]
[PID: 1392][C:\WINDOWS\Explorer.EXE] [Microsoft Corporation, 6.00.2900.2180 (xpsp_sp2_rtm.040803-2158)]
[C:\WINDOWS\Downloaded Program Files\jar1.4.2.dll] [N/A, N/A]
[D:\Nero7.2.0.3b\NeroDigitalExt.dll] [Nero AG, 2, 0, 0, 8]
[C:\WINDOWS\system32\RavExt.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 21]
[PID: 1476][C:\WINDOWS\system32\spoolsv.exe] [Microsoft Corporation, 5.1.2600.2696 (xpsp_sp2_gdr.050610-1519)]
[PID: 1724][C:\Program Files\Rising\Rav\RavStub.exe] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 16]
[C:\Program Files\Rising\Rav\RsCommX.dll] [rising, 18, 0, 0, 1]
[C:\Program Files\Rising\Rav\RSCOMMON.DLL] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 4]
[PID: 1856][C:\Documents and Settings\Administrator\桌面\Serv-U6301\ServUDaemon.exe] [Rhino Software, Inc. +1(262) 560-9627, 6, 3, 0, 1]
[C:\Documents and Settings\Administrator\桌面\Serv-U6301\RhinoNET.dll] [Rhino Software, Inc. +1(262) 560-9627, 1, 0, 0, 2]
[C:\Documents and Settings\Administrator\桌面\Serv-U6301\zlib1.dll] [N/A, 1.2.3]
[C:\Documents and Settings\Administrator\桌面\Serv-U6301\libeay32.DLL] [The OpenSSL Project, http://www.openssl.org/, 0.9.8d]
[C:\Documents and Settings\Administrator\桌面\Serv-U6301\ssleay32.DLL] [The OpenSSL Project, http://www.openssl.org/, 0.9.8d]
[PID: 1908][C:\Program Files\Thunder Network\WebThunder\WebThunder.exe] [深圳市迅雷网络技术有限公司, 1, 3, 0, 65]
[C:\Program Files\Thunder Network\WebThunder\taskmanage.dll] [Thunder Networking Technologies,LTD, 1, 4, 1, 66]
[C:\Program Files\Thunder Network\WebThunder\download_interface.dll] [Thunder Networking Technologies,LTD, 2, 0, 0, 3]
[C:\Program Files\Thunder Network\WebThunder\asyn_dns.dll] [N/A, N/A]
[C:\Program Files\Thunder Network\WebThunder\RegisterDll.dll] [Thunder Networking Technologies,LTD, 2, 2, 1, 34]
[C:\Program Files\Thunder Network\WebThunder\historyinfo_manage.dll] [Thunder Networking Technologies,LTD, 5, 3, 0, 228]
[C:\Program Files\Thunder Network\WebThunder\UpdateDownload.dll] [Thunder Networking Technologies,LTD, 1, 0, 1, 8]
[C:\Program Files\Thunder Network\WebThunder\UpdateExec.dll] [Thunder Networking Technologies,LTD, 1, 0, 1, 5]
[C:\Program Files\Thunder Network\WebThunder\iEmbedShell.dll] [　, 1, 0, 0, 12]
[C:\Program Files\Thunder Network\WebThunder\iEmbed05.dll] [　, 2, 3, 1, 41]
[C:\WINDOWS\system32\macromed\flash\flash.ocx] [Macromedia, Inc., 7,0,19,0]
[PID: 1924][C:\Program Files\Rising\Rav\RavTask.exe] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 22]
[C:\Program Files\Rising\Rav\RSCOMMON.DLL] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 4]
[C:\Program Files\Rising\Rav\RSAPPMGR.DLL] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 2]
[C:\Program Files\Rising\Rav\CfgDll.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 11]
[C:\Program Files\Rising\Rav\RsCommX.dll] [rising, 18, 0, 0, 1]
[PID: 1952][C:\Program Files\Rising\Rav\Ravmon.exe] [Beijing Rising Technology Co., Ltd., 18, 0, 1, 33]
[C:\Program Files\Rising\Rav\RsGuiLib.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 26]
[C:\Program Files\Rising\Rav\BWList.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 19]
[C:\Program Files\Rising\Rav\RSAPPMGR.DLL] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 2]
[C:\Program Files\Rising\Rav\CfgDll.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 11]
[C:\Program Files\Rising\Rav\RSCOMMON.DLL] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 4]
[C:\Program Files\Rising\Rav\RsCommX.dll] [rising, 18, 0, 0, 1]
[C:\Program Files\Rising\Rav\PngDll.dll] [Beijing Rising Technology Co., Ltd., 18, 0, 0, 5]
[PID: 1984][C:\WINDOWS\system32\svchost.exe] [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 2024][C:\WINDOWS\system32\ctfmon.exe] [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 1512][C:\WINDOWS\system32\wbem\wmiprvse.exe] [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]
[PID: 404][C:\Program Files\WinRAR\WinRAR.exe] [N/A, N/A]
[PID: 684][D:\Personal\Temp\Rar$EX00.695\SREng\SREng.exe] [Smallfrogs Studio, 2.2.6.605]
[PID: 436][C:\WINDOWS\system32\wuauclt.exe] [Microsoft Corporation, 5.8.0.2469 built by: lab01_n(wmbla)]
[PID: 1128][C:\WINDOWS\system32\wbem\wmiprvse.exe] [Microsoft Corporation, 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)]