最近一开机就很慢，任务管理器中发现一个SVCHOST.EXE占用CPU100%，结束进程后就没问题了，但以后开机又出现同样问题，什么原因，求高手支招。

8成进病毒了。。。。。。。。。。。。。。

Logfile of HijackThis v1.99.1
Scan saved at 21:47:20, on 2006-9-23
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
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
E:\rising\Rav\CCenter.exe
E:\rising\Rav\Ravmond.exe
C:\WINDOWS\system32\spoolsv.exe
E:\rising\Rav\RavStub.exe
C:\WINDOWS\Explorer.EXE
E:\rising\Rav\RavTask.exe
E:\rising\Rav\Ravmon.exe
C:\WINDOWS\system32\wscntfy.exe
C:\WINDOWS\system32\ctfmon.exe
E:\rising\Rav\Rav.exe
C:\WINDOWS\system32\wuauclt.exe
E:\rising\Rav\RsAgent.exe
C:\WINDOWS\msagent\AgentSvr.exe
E:\rising\Rav\ScanBD.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\WINDOWS\system32\wuauclt.exe
E:\FlashGet\flashget.exe
D:\Downloads\ha_hijackthis_1991\HijackThis.exe
C:\WINDOWS\NOTEPAD.EXE

R3 - URLSearchHook: YOK Search Class - {88351CEF-BAC0-4A9B-8380-31A173E2926F} - C:\PROGRA~1\YOK.com\SUPERS~1\YOK_SuperSearch.dll (file missing)
O2 - BHO: (no name) - {75FE2B5A-D3A4-4EFA-AC11-ADC9C9459688} - (no file)
O2 - BHO: IeCatch2 Class - {A5366673-E8CA-11D3-9CD9-0090271D075B} - E:\FlashGet\jccatch.dll
O3 - Toolbar: (no name) - {F869BB38-FFEF-4589-B986-610B7AD0ADA2} - (no file)
O4 - HKLM\..\Run: [RavTask] "E:\rising\Rav\RavTask.exe" -system
O4 - HKLM\..\Run: [YOKAssiant] Rundll32.exe C:\PROGRA~1\YOK.com\SUPERS~1\YOK_SuperSearch.dll,YOKAssiant
O4 - HKLM\..\Run: [IMSCMig] C:\PROGRA~1\COMMON~1\MICROS~1\IME\IMSC40A\IMSCMIG.EXE /Preload
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O8 - Extra context menu item: 使用网际快车下载 - E:\FlashGet\jc_link.htm
O8 - Extra context menu item: 使用网际快车下载全部链接 - E:\FlashGet\jc_all.htm
O8 - Extra context menu item: 导出到 Microsoft Office Excel(&X) - res://E:\MICROS~1\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: 信息检索 - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - E:\MICROS~1\OFFICE11\REFIEBAR.DLL
O9 - Extra button: FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - E:\FlashGet\flashget.exe
O9 - Extra 'Tools' menuitem: &FlashGet - {D6E814A0-E0C5-11d4-8D29-0050BA6940E3} - E:\FlashGet\flashget.exe
O14 - IERESET.INF: START_PAGE_URL=http://www.microsoft.com/
O18 - Protocol: about - {3050F406-98B5-11CF-BB82-00AA00BDCE0B} - C:\WINDOWS\system32\mshtml.dll
O18 - Protocol: cdl - {3DD53D40-7B8B-11D0-B013-00AA0059CE02} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: dvd - {12D51199-0DB5-46FE-A120-47A3D7D937CC} - C:\WINDOWS\system32\msvidctl.dll
O18 - Protocol: file - {79EAC9E7-BAF9-11CE-8C82-00AA004BA90B} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: ftp - {79EAC9E3-BAF9-11CE-8C82-00AA004BA90B} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: gopher - {79EAC9E4-BAF9-11CE-8C82-00AA004BA90B} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: http - {79EAC9E2-BAF9-11CE-8C82-00AA004BA90B} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: https - {79EAC9E5-BAF9-11CE-8C82-00AA004BA90B} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: ipp - (no CLSID) - (no file)
O18 - Protocol: its - {9D148291-B9C8-11D0-A4CC-0000F80149F6} - C:\WINDOWS\system32\itss.dll
O18 - Protocol: javascript - {3050F3B2-98B5-11CF-BB82-00AA00BDCE0B} - C:\WINDOWS\system32\mshtml.dll
O18 - Protocol: local - {79EAC9E7-BAF9-11CE-8C82-00AA004BA90B} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: mailto - {3050F3DA-98B5-11CF-BB82-00AA00BDCE0B} - C:\WINDOWS\system32\mshtml.dll
O18 - Protocol: mhtml - {05300401-BCBC-11D0-85E3-00C04FD85AB4} - C:\WINDOWS\system32\inetcomm.dll
O18 - Protocol: mk - {79EAC9E6-BAF9-11CE-8C82-00AA004BA90B} - C:\WINDOWS\system32\urlmon.dll
O18 - Protocol: ms-its - {9D148291-B9C8-11D0-A4CC-0000F80149F6} - C:\WINDOWS\system32\itss.dll
O18 - Protocol: msdaipp - (no CLSID) - (no file)
O18 - Protocol: mso-offdap11 - {32505114-5902-49B2-880A-1F7738E5A384} - C:\PROGRA~1\COMMON~1\MICROS~1\WEBCOM~1\11\OWC11.DLL
O18 - Protocol: res - {3050F3BC-98B5-11CF-BB82-00AA00BDCE0B} - C:\WINDOWS\system32\mshtml.dll
O18 - Protocol: sysimage - {76E67A63-06E9-11D2-A840-006008059382} - C:\WINDOWS\system32\mshtml.dll
O18 - Protocol: tv - {CBD30858-AF45-11D2-B6D6-00C04FBBDE6E} - C:\WINDOWS\system32\msvidctl.dll
O18 - Protocol: vbscript - {3050F3B2-98B5-11CF-BB82-00AA00BDCE0B} - C:\WINDOWS\system32\mshtml.dll
O18 - Protocol: wia - {13F3EA8B-91D7-4F0A-AD76-D2853AC8BECE} - C:\WINDOWS\system32\wiascr.dll
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINDOWS\system32\WPDShServiceObj.dll
O23 - Service: Rising Process Communication Center (RsCCenter) - Beijing Rising Technology Co., Ltd. - E:\rising\Rav\CCenter.exe
O23 - Service: RsRavMon Service (RsRavMon) - Beijing Rising Technology Co., Ltd. - E:\rising\Rav\Ravmond.exe

D:\Downloads\ha_hijackthis_1991\HijackThis.exe
C:\WINDOWS\msagent\AgentSvr.exe
上面俩个有点问题，下面俩个可以关闭掉。。。。不用第一个是升级服务，第二是打印机。。。。
C:\WINDOWS\system32\wuauclt.exe
C:\WINDOWS\system32\spoolsv.exe

引用:

【不可再生的缘的贴子】D:\Downloads\ha_hijackthis_1991\HijackThis.exe C:\WINDOWS\msagent\AgentSvr.exe 上面俩个有点问题，下面俩个可以关闭掉。。。。不用第一个是升级服务，第二是打印机。。。。 C:\WINDOWS\system32\wuauclt.exe C:\WINDOWS\system32\spoolsv.exe ………………

D:\Downloads\ha_hijackthis_1991\HijackThis.exe
是扫描日志用的进程没问题的！

用HijackThis v1.99.1修复以下项
R3 - URLSearchHook: YOK Search Class - {88351CEF-BAC0-4A9B-8380-31A173E2926F} - C:\PROGRA~1\YOK.com\SUPERS~1\YOK_SuperSearch.dll (file missing)
O2 - BHO: (no name) - {75FE2B5A-D3A4-4EFA-AC11-ADC9C9459688} - (no file)
O3 - Toolbar: (no name) - {F869BB38-FFEF-4589-B986-610B7AD0ADA2} - (no file)
O4 - HKLM\..\Run: [YOKAssiant] Rundll32.exe C:\PROGRA~1\YOK.com\SUPERS~1\YOK_SuperSearch.dll,YOKAssiant

又是病毒在作怪

我也出现那种问题,可是用瑞星最新版查毒并没有查出病毒啊!!!!

把021项一起修复了，没什么用。

扫SREng日志到反病毒版