疑問 - 有關lsass.exe

[s8321414]

請問這個是系統檔還是病毒?
如果是系統檔，那它又是作什麼用的呢.....謝謝........

[runonetime]

作者: s8321414

請問這個是系統檔還是病毒?
如果是系統檔，那它又是作什麼用的呢.....謝謝........

http://support.microsoft.com/kb/842382/zh-tw

[s8321414]

作者: runonetime

http://support.microsoft.com/kb/842382/zh-tw

看不懂它在說啥........................

[plunderer]

簡單判斷法:
若在 C:\WINDOWS\system32 目錄內, 就是正常的系統檔
若在其他目錄內, 肯定是病毒

[flyd]

這是系統程式,與網路功能相關

[Pichumax]

是一種系統檔案,也是一種病毒
會透過隨身裝置感染(手機、隨身碟、磁碟片...etc)
殺傷力很強...
不太好清理

[s8321414]

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 下午 05:55:49, on 2008/2/13
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16574)
Boot mode: Normal

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\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\McAfee\Common Framework\FrameworkService.exe
C:\Program Files\McAfee\VirusScan Enterprise\Mcshield.exe
C:\Program Files\McAfee\VirusScan Enterprise\VsTskMgr.exe
C:\WINDOWS\SOUNDMAN.EXE
C:\Program Files\ATI Technologies\ATI.ACE\cli.exe
C:\Program Files\McAfee\Common Framework\UdaterUI.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\McAfee\Common Framework\McTray.exe
C:\Program Files\Steganos Internet Anonym 2006\SIA2006.exe
C:\PROGRA~1\Yahoo!\MESSEN~1\ymsgr_tray.exe
C:\WINDOWS\system32\wuauclt.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\ATI Technologies\ATI.ACE\cli.exe
C:\Program Files\ATI Technologies\ATI.ACE\cli.exe
C:\WINDOWS\system32\wuauclt.exe
C:\Documents and Settings\user\桌面\HiJackThis.exe

R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\PROGRA~1\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: &Yahoo! Toolbar Helper - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\PROGRA~1\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: scriptproxy - {7DB2D5A0-7241-4E79-B68D-6309F01C5231} - C:\Program Files\McAfee\VirusScan Enterprise\scriptcl.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\PROGRA~1\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: Steganos Internet Anonym - {00000000-5736-4205-0008-f7ed0776fb27} - c:\program files\steganos internet anonym 2006\sia2006iep.dll
O4 - HKLM\..\Run: [IMJPMIG8.1] "C:\WINDOWS\IME\imjp8_1\IMJPMIG.EXE" /Spoil /RemAdvDef /Migration32
O4 - HKLM\..\Run: [run40] d:\40\BIT.EXE /R
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [run31] d:\31\BIT.EXE /R
O4 - HKLM\..\Run: [kpower] d:\31\kpower.exe
O4 - HKLM\..\Run: [SiS Windows KeyHook] C:\WINDOWS\System32\keyhook.exe
O4 - HKLM\..\Run: [PHIMETIPSYNC] C:\Program Files\Common Files\Microsoft Shared\IME\IMTC65\Phonetic\TINTLCFG.EXE /PHIMETIPSync
O4 - HKLM\..\Run: [SiSPower] Rundll32.exe SiSPower.dll,ModeAgent
O4 - HKLM\..\Run: [ATICCC] "C:\Program Files\ATI Technologies\ATI.ACE\cli.exe" runtime -Delay
O4 - HKLM\..\Run: [ShStatEXE] "C:\Program Files\McAfee\VirusScan Enterprise\SHSTAT.EXE" /STANDALONE
O4 - HKLM\..\Run: [McAfeeUpdaterUI] "C:\Program Files\McAfee\Common Framework\UdaterUI.exe" /StartedFromRunKey
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [Yahoo! Pager] "C:\PROGRA~1\Yahoo!\MESSEN~1\YAHOOM~1.EXE" -quiet
O4 - HKCU\..\Run: [Yahoo!Mini] "C:\Program Files\Yahoo!\Mini\YMiniUpdat2.exe" -c
O4 - HKCU\..\Run: [SIA2006] "C:\Program Files\Steganos Internet Anonym 2006\SIA2006.exe" -boot
O4 - HKUS\S-1-5-19\..\Run: [ctfmon.exe] ctfmon.exe (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-19\..\RunOnce: [SIA2006] "C:\Program Files\Steganos Internet Anonym 2006\SIA2006.exe" -firstboot (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-20\..\Run: [ctfmon.exe] ctfmon.exe (User 'NETWORK SERVICE')
O4 - HKUS\S-1-5-20\..\RunOnce: [SIA2006] "C:\Program Files\Steganos Internet Anonym 2006\SIA2006.exe" -firstboot (User 'NETWORK SERVICE')
O4 - HKUS\S-1-5-18\..\Run: [ctfmon.exe] ctfmon.exe (User 'SYSTEM')
O4 - HKUS\S-1-5-18\..\RunOnce: [SIA2006] "C:\Program Files\Steganos Internet Anonym 2006\SIA2006.exe" -firstboot (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [ctfmon.exe] ctfmon.exe (User 'Default user')
O4 - HKUS\.DEFAULT\..\RunOnce: [SIA2006] "C:\Program Files\Steganos Internet Anonym 2006\SIA2006.exe" -firstboot (User 'Default user')
O8 - Extra context menu item: 匯出至 Microsoft Office Excel(&X) - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: 及時添加轉換用語 - res://C:\WINDOWS\system32\tcscconv.dll/wnaddindex
O8 - Extra context menu item: 更新用語轉碼檔案 - res://C:\WINDOWS\system32\tcscconv.dll/update
O8 - Extra context menu item: 龍之旅簡轉繁體(&T) - res://C:\WINDOWS\system32\tcscconv.dll/totrad
O8 - Extra context menu item: 龍之旅繁轉簡體(&S) - res://C:\WINDOWS\system32\tcscconv.dll/tosimp
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
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
O14 - IERESET.INF: START_PAGE_URL=Http://www.synnex.com.tw/
O15 - Trusted Zone: http://www.whnews.cn
O15 - ESC Trusted Zone: http://*.update.microsoft.com
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Program Files\Yahoo!\Common\yinsthelper.dll
O17 - HKLM\System\CCS\Services\Tcpip\..\{A8D01C71-DF5B-463B-A694-D63DF2893384}: NameServer = 168.95.192.1 168.95.1.1
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: McAfee Framework Service (McAfeeFramework) - McAfee, Inc. - C:\Program Files\McAfee\Common Framework\FrameworkService.exe
O23 - Service: McAfee McShield (McShield) - McAfee, Inc. - C:\Program Files\McAfee\VirusScan Enterprise\Mcshield.exe
O23 - Service: McAfee Task Manager (McTaskManager) - McAfee, Inc. - C:\Program Files\McAfee\VirusScan Enterprise\VsTskMgr.exe

--
End of file - 6141 bytes
這是我用HiJackThis掃出來的log
請幫我看看該檔案是否為病毒
其他檔案也順便幫我看一下
謝謝