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Trojan Horse Dropper Generic HCN


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#1
sam-my

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AVG 7.5 (which superseeded EWIDO) is detecting a Trojan (Dropper Generic HCN) in the file
C:\WINDOWS\scvhost.exe.
I scaned my PC using NOD32, Spysweeper, eTrust AV, SpyBot with no findings.
AVG 7.5 put this file within the "Vault" (Quarantine) but I had to release it since this file is needed.
AVG is continually sending a window for a Virus detection (in the above file).

I am attaching here my HijackThis log for your review.
Your assistance will be very appreciated

Logfile of HijackThis v1.99.1
Scan saved at 11:52:22 PM, on 12/17/2006
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
C:\Program Files\Windows Defender\MsMpEng.exe
C:\windows\System32\svchost.exe
C:\windows\system32\spoolsv.exe
C:\PROGRA~1\Grisoft\AVG7\avgamsvr.exe
C:\PROGRA~1\Grisoft\AVG7\avgupsvc.exe
C:\Program Files\Eset\nod32krn.exe
C:\windows\system32\nvsvc32.exe
C:\Program Files\Sygate\SPF\smc.exe
C:\windows\system32\svchost.exe
C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe
C:\windows\Explorer.EXE
C:\Program Files\Eset\nod32kui.exe
C:\Program Files\Webroot\Spy Sweeper\SpySweeperUI.exe
C:\PROGRA~1\Grisoft\AVG7\avgcc.exe
C:\windows\system32\ctfmon.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Webroot\Spy Sweeper\SSU.EXE
C:\Documents and Settings\SAMY\Desktop\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://runonce.msn.com/?v=msgrv75
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: SpywareGuardDLBLOCK.CBrowserHelper - {4A368E80-174F-4872-96B5-0B27DDD11DB2} - C:\Program Files\SpywareGuard\dlprotect.dll
O4 - HKLM\..\Run: [nod32kui] "C:\Program Files\Eset\nod32kui.exe" /WAITSERVICE
O4 - HKLM\..\Run: [SmcService] "C:\PROGRA~1\Sygate\SPF\smc.exe" -startgui
O4 - HKLM\..\Run: [SpySweeper] "C:\Program Files\Webroot\Spy Sweeper\SpySweeperUI.exe" /startintray
O4 - HKLM\..\Run: [NvCplDaemon] "RUNDLL32.EXE" C:\windows\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [Hotfix] C:\windows\scvhost.exe
O4 - HKLM\..\Run: [AVG7_CC] "C:\PROGRA~1\Grisoft\AVG7\avgcc.exe" /STARTUP
O4 - HKLM\..\RunServices: [Hotfix] C:\windows\scvhost.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\windows\system32\ctfmon.exe
O8 - Extra context menu item: Translate with &Babylon - res://C:\Program Files\Babylon\Babylon-Pro\Utils\BabylonIEPI.dll/Translate.htm
O9 - Extra button: ICQ Pro - {6224f700-cba3-4071-b251-47cb894244cd} - C:\PROGRA~1\ICQ\ICQ.exe
O9 - Extra 'Tools' menuitem: ICQ - {6224f700-cba3-4071-b251-47cb894244cd} - C:\PROGRA~1\ICQ\ICQ.exe
O9 - Extra button: (no name) - {85d1f590-48f4-11d9-9669-0800200c9a66} - %windir%\bdoscandel.exe (file missing)
O9 - Extra 'Tools' menuitem: Uninstall BitDefender Online Scanner v8 - {85d1f590-48f4-11d9-9669-0800200c9a66} - %windir%\bdoscandel.exe (file missing)
O9 - Extra button: ICQ Lite - {B863453A-26C3-4e1f-A54D-A2CD196348E9} - C:\Program Files\ICQLite\ICQLite.exe
O9 - Extra 'Tools' menuitem: ICQ Lite - {B863453A-26C3-4e1f-A54D-A2CD196348E9} - C:\Program Files\ICQLite\ICQLite.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
O16 - DPF: {04E214E5-63AF-4236-83C6-A7ADCBF9BD02} (HouseCall Control) - http://housecall60.t...all/xscan60.cab
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} (BDSCANONLINE Control) - http://download.bitd...can8/oscan8.cab
O16 - DPF: {7B297BFD-85E4-4092-B2AF-16A91B2EA103} (WScanCtl Class) - http://www3.ca.com/s...nfo/webscan.cab
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://acs.pandasoft...free/asinst.cab
O16 - DPF: {C4925E65-7A1E-11D2-8BB4-00A0C9CC72C3} (Virtools WebPlayer Class) - http://a532.g.akamai...5/Installer.exe
O16 - DPF: {D79B6F43-F214-4E7A-9ECB-CCC8771F2416} - http://www.tapuz.co....in/launcher.cab
O16 - DPF: {F59AB0C4-3443-4551-A78F-C101F9DE0215} (LauncherV1 Class) - http://irc.nana.co.i.../launcher39.cab
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O20 - AppInit_DLLs: MsgPlusLoader.dll
O20 - Winlogon Notify: WgaLogon - C:\windows\SYSTEM32\WgaLogon.dll
O20 - Winlogon Notify: WRNotifier - C:\windows\SYSTEM32\WRLogonNTF.dll
O23 - Service: AVG7 Alert Manager Server (Avg7Alrt) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgamsvr.exe
O23 - Service: AVG7 Update Service (Avg7UpdSvc) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgupsvc.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPodService - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: NOD32 Kernel Service (NOD32krn) - Eset - C:\Program Files\Eset\nod32krn.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\windows\system32\nvsvc32.exe
O23 - Service: Sygate Personal Firewall Pro (SmcService) - Sygate Technologies, Inc. - C:\Program Files\Sygate\SPF\smc.exe
O23 - Service: TuneUp WinStyler Theme Service (TUWinStylerThemeSvc) - TuneUp Software GmbH - C:\Program Files\TuneUp Utilities 2006\WinStylerThemeSvc.exe
O23 - Service: Webroot Spy Sweeper Engine (WebrootSpySweeperService) - Webroot Software, Inc. - C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe
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#2
MFDnSC

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You may want to print this or save it to notepad as we will go to safe mode.

Fix these with HiJackThis – mark them, close IE, click fix checked

O4 - HKLM\..\Run: [Hotfix] C:\windows\scvhost.exe

O4 - HKLM\..\RunServices: [Hotfix] C:\windows\scvhost.exe

DownLoad http://www.downloads...org/KillBox.zip or
http://www.thespykil...les/killbox.exe

Restart your computer into safe mode now. (Tapping F8 at the first black screen) Perform the following steps in safe mode:

Double-click on Killbox.exe to run it. Now put a tick by Standard File Kill. In the "Full Path of File to Delete" box, copy and paste each of the following lines one at a time then click on the button that has the red circle with the X in the middle after you enter each file. It will ask for confimation to delete the file. Click Yes. Continue with that same procedure until you have copied and pasted all of these in the "Paste Full Path of File to Delete" box.

C:\windows\scvhost.exe

Note: It is possible that Killbox will tell you that one or more files do not exist. If that happens, just continue on with all the files. Be sure you don't miss any.

START – RUN – type in %temp% - OK - Edit – Select all – File – Delete

Delete everything in the C:\Windows\Temp folder or C:\WINNT\temp

Not all temp files will delete and that is normal
Empty the recycle bin
Boot and post a new log from normal NOT safe mode

Please give feedback on what worked/didn’t work and the current status of your system
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#3
sam-my

sam-my

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MFDnSC
Thanks a lot for your so prompt answer. I really very appreciate it.

Please, if I understood correctly:
- the "Fix" in the HijackThis is to be done in "Normal Mode"
- "....copy and paste each of the following lines one at a time ..."
in my case I have only one line : " C:\windows\scvhost.exe"

Is it correct?

Thanks for your kind assistance
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#4
sam-my

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I ran HijackThis in order to delete the two lines as per above instructions,
but was surprised not to found them.
After a short check I found out that AVG 7.5 sent the file "C:\windows\scvhost.exe" to the Vault (quarantine).

1. Do I have to restore the file from the Vault in order to proceed as per your instructions?
Or do I have to leave it there.
2. I checked the folder "C:\windows\" and didn't found the file "scvhost" (i.e. "C:\windows\scvhost.exe.")
Do I need this file?

Thanks for your assistance.

As follows HijackThis log without any deletion:

Logfile of HijackThis v1.99.1
Scan saved at 8:48:00 PM, on 12/18/2006
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
C:\Program Files\Windows Defender\MsMpEng.exe
C:\windows\System32\svchost.exe
C:\windows\system32\spoolsv.exe
C:\PROGRA~1\Grisoft\AVG7\avgamsvr.exe
C:\PROGRA~1\Grisoft\AVG7\avgupsvc.exe
C:\Program Files\Eset\nod32krn.exe
C:\windows\system32\nvsvc32.exe
C:\Program Files\Sygate\SPF\smc.exe
C:\windows\system32\svchost.exe
C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe
C:\windows\Explorer.EXE
C:\Program Files\Eset\nod32kui.exe
C:\Program Files\Webroot\Spy Sweeper\SpySweeperUI.exe
C:\PROGRA~1\Grisoft\AVG7\avgcc.exe
C:\windows\system32\ctfmon.exe
C:\Program Files\Webroot\Spy Sweeper\SSU.EXE
C:\Program Files\Mozilla Firefox\firefox.exe
C:\PROGRA~1\Grisoft\AVG7\avgvv.exe
C:\Documents and Settings\SAMY\Desktop\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://runonce.msn.com/?v=msgrv75
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: SpywareGuardDLBLOCK.CBrowserHelper - {4A368E80-174F-4872-96B5-0B27DDD11DB2} - C:\Program Files\SpywareGuard\dlprotect.dll
O4 - HKLM\..\Run: [nod32kui] "C:\Program Files\Eset\nod32kui.exe" /WAITSERVICE
O4 - HKLM\..\Run: [SmcService] "C:\PROGRA~1\Sygate\SPF\smc.exe" -startgui
O4 - HKLM\..\Run: [SpySweeper] "C:\Program Files\Webroot\Spy Sweeper\SpySweeperUI.exe" /startintray
O4 - HKLM\..\Run: [NvCplDaemon] "RUNDLL32.EXE" C:\windows\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [AVG7_CC] "C:\PROGRA~1\Grisoft\AVG7\avgcc.exe" /STARTUP
O4 - HKCU\..\Run: [CTFMON.EXE] C:\windows\system32\ctfmon.exe
O8 - Extra context menu item: Translate with &Babylon - res://C:\Program Files\Babylon\Babylon-Pro\Utils\BabylonIEPI.dll/Translate.htm
O9 - Extra button: ICQ Pro - {6224f700-cba3-4071-b251-47cb894244cd} - C:\PROGRA~1\ICQ\ICQ.exe
O9 - Extra 'Tools' menuitem: ICQ - {6224f700-cba3-4071-b251-47cb894244cd} - C:\PROGRA~1\ICQ\ICQ.exe
O9 - Extra button: (no name) - {85d1f590-48f4-11d9-9669-0800200c9a66} - %windir%\bdoscandel.exe (file missing)
O9 - Extra 'Tools' menuitem: Uninstall BitDefender Online Scanner v8 - {85d1f590-48f4-11d9-9669-0800200c9a66} - %windir%\bdoscandel.exe (file missing)
O9 - Extra button: ICQ Lite - {B863453A-26C3-4e1f-A54D-A2CD196348E9} - C:\Program Files\ICQLite\ICQLite.exe
O9 - Extra 'Tools' menuitem: ICQ Lite - {B863453A-26C3-4e1f-A54D-A2CD196348E9} - C:\Program Files\ICQLite\ICQLite.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
O16 - DPF: {04E214E5-63AF-4236-83C6-A7ADCBF9BD02} (HouseCall Control) - http://housecall60.t...all/xscan60.cab
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} (BDSCANONLINE Control) - http://download.bitd...can8/oscan8.cab
O16 - DPF: {7B297BFD-85E4-4092-B2AF-16A91B2EA103} (WScanCtl Class) - http://www3.ca.com/s...nfo/webscan.cab
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://acs.pandasoft...free/asinst.cab
O16 - DPF: {C4925E65-7A1E-11D2-8BB4-00A0C9CC72C3} (Virtools WebPlayer Class) - http://a532.g.akamai...5/Installer.exe
O16 - DPF: {D79B6F43-F214-4E7A-9ECB-CCC8771F2416} - http://www.tapuz.co....in/launcher.cab
O16 - DPF: {F59AB0C4-3443-4551-A78F-C101F9DE0215} (LauncherV1 Class) - http://irc.nana.co.i.../launcher39.cab
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O20 - AppInit_DLLs: MsgPlusLoader.dll
O20 - Winlogon Notify: WgaLogon - C:\windows\SYSTEM32\WgaLogon.dll
O20 - Winlogon Notify: WRNotifier - C:\windows\SYSTEM32\WRLogonNTF.dll
O23 - Service: AVG7 Alert Manager Server (Avg7Alrt) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgamsvr.exe
O23 - Service: AVG7 Update Service (Avg7UpdSvc) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgupsvc.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPodService - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: NOD32 Kernel Service (NOD32krn) - Eset - C:\Program Files\Eset\nod32krn.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\windows\system32\nvsvc32.exe
O23 - Service: Sygate Personal Firewall Pro (SmcService) - Sygate Technologies, Inc. - C:\Program Files\Sygate\SPF\smc.exe
O23 - Service: TuneUp WinStyler Theme Service (TUWinStylerThemeSvc) - TuneUp Software GmbH - C:\Program Files\TuneUp Utilities 2006\WinStylerThemeSvc.exe
O23 - Service: Webroot Spy Sweeper Engine (WebrootSpySweeperService) - Webroot Software, Inc. - C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe
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#5
MFDnSC

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Do nothing, except empty the virus vault

Clean Posted Image

Turn off restore points, boot, turn them back on – here’s how

http://service1.syma...src=sec_doc_nam
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