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Discussion Starter · #1 ·
i am using AVG Free edition, updated very frequently and recently, approximately once a day randomly, AVG's resident shield comes up and tells me that the worm/nachi.B virus has been found in C:\windows\system32\drivers\svchost.exe, i run AVG and it says it has healed the virus but for some reason it keeps coming back, ive also deleted the svchost file from that directory and still no help.

using win xp sp1, vaio p4 2.4ghz, 512mb

how can i make this thing go away!!!!???
 

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Discussion Starter · #3 ·
here ya go, hope it helps

Logfile of HijackThis v1.97.7
Scan saved at 11:29:44 PM, on 4/7/2004
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

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
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\System32\gearsec.exe
C:\Program Files\Common Files\Microsoft Shared\VS7Debug\mdm.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\LTSMMSG.exe
C:\WINDOWS\AGRSMMSG.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Program Files\AIM\aim.exe
C:\Program Files\Sony\VAIO Action Setup\VAServ.exe
C:\Program Files\MSN\MSNCoreFiles\msn.exe
C:\Program Files\MSN\MSNIA\msniasvc.exe
C:\Program Files\Kazaa Lite K++\KazaaLite.kpp
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\Documents and Settings\Family\Desktop\hijackthis\HijackThis.exe

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.sony.com/vaiopeople
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
O2 - BHO: (no name) - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\adobe\acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: (no name) - {EFF80427-F837-4B74-8834-BAF18E0553FD} - C:\PROGRA~1\KAZAAL~1\kabh1.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE NvQTwk,NvCplDaemon initialize
O4 - HKLM\..\Run: [SiSUSBRG] C:\WINDOWS\SiSUSBrg.exe
O4 - HKLM\..\Run: [LTSMMSG] LTSMMSG.exe
O4 - HKLM\..\Run: [ezShieldProtector for Px] C:\WINDOWS\System32\ezSP_Px.exe
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM\..\Run: [AVG_CC] C:\PROGRA~1\Grisoft\AVG6\avgcc32.exe /startup
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [AIM] C:\Program Files\AIM\aim.exe -cnetwait.odl
O4 - Global Startup: VAIO Action Setup (Server).lnk = ?
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~3\Office10\EXCEL.EXE/3000
O9 - Extra button: AIM (HKLM)
O9 - Extra button: @C:\Program Files\Messenger\Msgslang.dll,-61144 (HKLM)
O9 - Extra 'Tools' menuitem: @C:\Program Files\Messenger\Msgslang.dll,-61144 (HKLM)
O12 - Plugin for .spop: C:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O14 - IERESET.INF: START_PAGE_URL=http://www.sony.com/vaiopeople
O16 - DPF: {166B1BCA-3F9C-11CF-8075-444553540000} (Shockwave ActiveX Control) - http://active.macromedia.com/director/cabs/sw.cab
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537/2004033001/housecall.antivirus.com/housecall/xscan53.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab
O16 - DPF: {D719897A-B07A-4C0C-AEA9-9B663A28DFCB} (iTunesDetector Class) - http://ax.phobos.apple.com.edgesuite.net/detection/ITDetector.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{14B9665F-2C47-4E04-A7E4-C577675B3489}: NameServer = 198.6.1.218 198.6.100.218
 

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hi all, i have same problem with nachi b virus in synhost as markshark09!!! ran vgv virus on it heals it but keeps crawling bacjk!"
help. i follow next step an d sen u the hijack this list oki. thanxx 4 ya time and energy. <3
 

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I'm not sure if anyone reading this has had any success in removing this virus completely, but the problem i'm having is the same as these two. The thing is, simply deleting the files will not cause the virus to dissapear, because it enters through open ports. I've found that with this virus, much like it's sister-virus Blaster, if you are using windows XP, you can turn on the Internet Connection Firewall in the connection settings for your internet connection. This will block whichever port the virus is using to crawl back in. However, i'm pretty pissed off because I'm using dialup, and there should be no need for me to be using an internet firewall - i notice that things run slower, like network connections on IRC. Anyway, this will solve your problem untill this damn thing internally combusts in June 2004, so let's all wait and see, shall we?

If you aren't using Windows XP, you might think about buying a firewall program such as ZoneAlarm. I would also assume hardware firewalls contained in internet routers will work as well.

I also recommend downloading and running Stinger, which will remove not only the virus files for Blaster and this varient, but the some of the other registry stetings it may have changed, etc etc.
 

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hey i have avg free versoin and it has found the nachi.B worm and said it has healed it but it keeps coming back. I followed your previous advice to others and downloaded hijackthis and here is the log as requested:

Logfile of HijackThis v1.97.7
Scan saved at 6:15:21 PM, on 4/05/2004
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

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
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\PROGRA~1\Grisoft\AVG6\avgserv.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\PROGRA~1\YAHOO!\MESSEN~1\ypager.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Program Files\MSN Messenger\msnmsgr.exe
C:\Program Files\Internet Explorer\iexplore.exe
D:\PROGRA~1\WINZIP\winzip32.exe
C:\Documents and Settings\Cassie Brown\Local Settings\Temp\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = BigPond Dial-Up Residential Internet Explorer
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = C:\WINDOWS\SYSTEM\blank.htm
O2 - BHO: (no name) - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: (no name) - {DE614603-6320-4046-A7A7-6A69CEC26F14} - C:\WINDOWS\MSLAGENT\4B_1,0,0,6_MSLAGENT.DLL (file missing)
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: (no name) - {CC90CDA0-74A0-45b4-80EF-D89CA8C249B8} - (no file)
O4 - HKLM\..\Run: [SystemTray] SysTray.Exe
O4 - HKLM\..\Run: [Omnipage] C:\Program Files\ScanSoft\OmniPageSE\opware32.exe
O4 - HKLM\..\Run: [LabtecKB] C:\Program Files\Labtec\Labtec Keyboard-Desktop Software\DsiMmKbd.EXE
O4 - HKLM\..\Run: [FLMLABTECMOUSE] C:\Program Files\Labtec\Labtec Mouse Software\2.0\mouse32a.exe
O4 - HKLM\..\Run: [AVG_CC] C:\PROGRA~1\Grisoft\AVG6\avgcc32.exe /STARTUP
O4 - HKLM\..\Run: [SMSERIAL] sm56hlpr.exe
O4 - HKLM\..\Run: [Microsoft IIS] C:\WINDOWS\system32\syshost.exe
O4 - HKCU\..\Run: [Yahoo! Pager] C:\PROGRA~1\YAHOO!\MESSEN~1\ypager.exe -quiet
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\MSN Messenger\msnmsgr.exe" /background
O9 - Extra 'Tools' menuitem: Sun Java Console (HKLM)
O9 - Extra button: Yahoo! Messenger (HKLM)
O9 - Extra 'Tools' menuitem: Yahoo! Messenger (HKLM)
O12 - Plugin for .mp3: C:\PROGRA~1\INTERN~1\PLUGINS\npqtplugin3.dll
O12 - Plugin for .spop: C:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O16 - DPF: Win32 Classes -
O16 - DPF: Yahoo! Chess - http://download.games.yahoo.com/games/clients/y/ct1_x.cab
O16 - DPF: Yahoo! Pool 2 - http://download.games.yahoo.com/games/clients/y/potc_x.cab
O16 - DPF: {093F9CF8-0DE1-491C-95D5-5EC257BD4CA3} - http://akamai.downloadv3.com/binaries/IA/dtc32_EN.cab
O16 - DPF: {1D4DB7D2-6EC9-47A3-BD87-1E41684E07BB} - http://ak.imgfarm.com/images/nocache/funwebproducts/SmileyCentralInitialSetup1.0.0.6.cab
O16 - DPF: {30528230-99F7-4BB4-88D8-FA1D4F56A2AB} (YInstStarter Class) - http://us.dl1.yimg.com/download.yahoo.com/dl/installs/yinst0401.cab
O16 - DPF: {9F1C11AA-197B-4942-BA54-47A8489BB47F} (Update Class) - http://v4.windowsupdate.microsoft.com/CAB/x86/unicode/iuctl.CAB?38110.1515856481
O16 - DPF: {A02780C3-7F77-4E28-855B-28890F3CF37A} - http://akamai.downloadv3.com/binaries/DialHTML/EGCOMLIB_1034_pack.cab
O16 - DPF: {CA034DCC-A580-4333-B52F-15F98C42E04C} (Downloader Class) - https://www.stopzilla.com/_download/Auto_Installer/dwnldr.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab
O16 - DPF: {EF99BD32-C1FB-11D2-892F-0090271D4F88} - http://us.dl1.yimg.com/download.companion.yahoo.com/dl/toolbar/yiebio5_1_6_0.cab
O16 - DPF: {F04A8AE2-A59D-11D2-8792-00C04F8EF29D} (Hotmail Attachments Control) - http://sea1fd.sea1.hotmail.msn.com/activex/HMAtchmt.ocx
O16 - DPF: {F58E1CEF-A068-4C15-BA5E-587CAF3EE8C6} (MSN Chat Control 4.5) - http://chat.msn.com/bin/msnchat45.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{4EFE409E-59DF-4AE2-987E-337A5173A5CB}: NameServer = 203.49.70.92 139.134.2.190
O17 - HKLM\System\CS1\Services\Tcpip\..\{4EFE409E-59DF-4AE2-987E-337A5173A5CB}: NameServer = 203.49.70.92 139.134.2.190
 

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Remove these entries with HJT (make sure all IE windows are closed):

O2 - BHO: (no name) - {DE614603-6320-4046-A7A7-6A69CEC26F14} - C:\WINDOWS\MSLAGENT\4B_1,0,0,6_MSLAGENT.DLL (file missing)

O16 - DPF: {EF99BD32-C1FB-11D2-892F-0090271D4F88} - http://us.dl1.yimg.com/download.com...ebio5_1_6_0.cab

O16 - DPF: {1D4DB7D2-6EC9-47A3-BD87-1E41684E07BB} - http://ak.imgfarm.com/images/nocach...etup1.0.0.6.cab

O3 - Toolbar: (no name) - {CC90CDA0-74A0-45b4-80EF-D89CA8C249B8} - (no file)

R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = C:\WINDOWS\SYSTEM\blank.htm

O4 - HKLM\..\Run: [Microsoft IIS] C:\WINDOWS\system32\syshost.exe


Reboot to safe mode, enable viewing of hidden/system files (instructions below) and delete the following:
C:\WINDOWS\system32\syshost.exeNOTE THAT IT IS sYshost AND NOT sVchost
How to boot to safe mode - http://service1.symantec.com/SUPPORT/tsgeninfo.nsf/docid/2001052409420406
How to enable viewing of hidden/system files - http://www.xtra.co.nz/help/0,,4155-1916458,00.html

Reboot

Run onlive AV scan from the below site.
http://housecall.trendmicro.com/housecall/start_corp.asp

Post another HJT log.
 
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