Expert: Brian Benosky - 2/12/2008

Question
QUESTION: My pc is infected by malware name " packer.malware.NSAnti.k "...Im using Bit defender 2008 Total security presently and it has detected this malware a lot of times and it says that it cant be deleted but it has block this malware. Now after all scanning was complete, whenever i open my hard drives, it shows an "open with" option. But when i open them with window explorer i can easily access them. i dont know how to solve this problem. The same problem is coming in my laptop as the same malware has also affected it!

Im sending you the contents of the log files which u have requested as per your instructions.

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 1:47:58 AM, on 2/12/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.5730.0011)
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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Intel Audio Studio\IntelAudioStudio.exe
C:\Program Files\Bonjour\mDNSResponder.exe
C:\Program Files\Common Files\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\WINDOWS\system32\nvsvc32.exe
c:\Program Files\Common Files\Protexis\License Service\PsiService_2.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Common Files\BitDefender\BitDefender Communicator\xcommsvr.exe
C:\Program Files\Common Files\BitDefender\BitDefender Update Service\livesrv.exe
C:\Program Files\BitDefender\BitDefender 2008\vsserv.exe
C:\WINDOWS\system32\wscntfy.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\WINDOWS\system32\wuauclt.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\BitDefender\BitDefender 2008\bdagent.exe
C:\WINDOWS\system32\msiexec.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://us.rd.yahoo.com/customize/ie/defaults/sb/msgr8/*http://www.yahoo.com/ext/
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://us.rd.yahoo.com/customize/ie/defaults/sp/msgr8/*http://www.yahoo.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.yahoo.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.yahoo.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://us.rd.yahoo.com/customize/ie/defaults/su/msgr8/*http://www.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://us.rd.yahoo.com/customize/ie/defaults/sb/msgr8/*http://www.yahoo.com/ext/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://us.rd.yahoo.com/customize/ie/defaults/sp/msgr8/*http://www.yahoo.com
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.yahoo.com/
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://us.rd.yahoo.com/customize/ie/defaults/su/msgr8/*http://www.yahoo.com
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
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: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: Yahoo! IE Services Button - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\Program Files\Yahoo!\Common\yiesrvc.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0\bin\ssv.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\PROGRA~1\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: Veoh Browser Plug-in - {D0943516-5076-4020-A3B5-AEFAF26AB263} - C:\Program Files\Veoh Networks\Veoh\Plugins\reg\VeohToolbar.dll
O3 - Toolbar: BitDefender Toolbar - {381FFDE8-2394-4f90-B10D-FC6124A40F8C} - C:\Program Files\BitDefender\BitDefender 2008\IEToolbar.dll
O4 - HKLM\..\Run: [IntelAudioStudio] "C:\Program Files\Intel Audio Studio\IntelAudioStudio.exe" TRAY
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [SBCSTray] C:\Program Files\Sunbelt Software\CounterSpy\SBCSTray.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [Yahoo! Pager] "C:\Program Files\Yahoo!\Messenger\YahooMessenger.exe" -quiet
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0\bin\ssv.dll
O9 - Extra button: Yahoo! Services - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\Program Files\Yahoo!\Common\yiesrvc.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
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
O23 - Service: Autodesk Licensing Service - Autodesk - C:\Program Files\Common Files\Autodesk Shared\Service\AdskScSrv.exe
O23 - Service: Bonjour Service - Apple Computer, Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPod Service - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: BitDefender Desktop Update Service (LIVESRV) - BitDefender SRL - C:\Program Files\Common Files\BitDefender\BitDefender Update Service\livesrv.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: Protexis Licensing V2 (PSI_SVC_2) - Protexis Inc. - c:\Program Files\Common Files\Protexis\License Service\PsiService_2.exe
O23 - Service: Remote Packet Capture Protocol v.0 (experimental) (rpcapd) - CACE Technologies - C:\Program Files\WinPcap\rpcapd.exe
O23 - Service: Sunbelt CounterSpy Antispyware (SBCSSvc) - Sunbelt Software - C:\Program Files\Sunbelt Software\CounterSpy\SBCSSvc.exe
O23 - Service: BitDefender Virus Shield (VSSERV) - BitDefender S.R.L. - C:\Program Files\BitDefender\BitDefender 2008\vsserv.exe
O23 - Service: BitDefender Communicator (XCOMM) - BitDefender - C:\Program Files\Common Files\BitDefender\BitDefender Communicator\xcommsvr.exe

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End of file - 6387 bytes


ANSWER: Hello Anubhav

Your error is caused by the corruption of your autorun.inf file which was not cleaned by BitDefender.

To correct and solve this error, follow these steps:

1. Run Task Manager (Ctrl-Alt-Del or right click on Taskbar)
2. Stop wscript.exe process if available by highlighting the process name and clicking End Process.
3. Then terminate explorer.exe process.
4. In Task Manager, click on File -> New Task (Run…).
5. Type “cmd” (without quotes) into the Open text box and click OK.
6. Type the following command one by one followed by hitting Enter key:

del c:\autorun.* /f /s /q /a
del d:\autorun.* /f /s /q /a
del e:\autorun.* /f /s /q /a

c, d, e each represents drive letters on Windows system. If there are more drives or partitions available, continue to command by altering to other drive letter. Note that you must also clean the autorun files from USB flash drive or portable hard disk as the external drive may also be infected.
7. In Task Manager, click on File -> New Task (Run…).
8. Type “regedit” (without quotes) into the Open text box and click OK.
9. Navigate to the following registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

10. Check if the value name and value data for the key is correct (the value data of userint.exe include the path which may be different than C drive, which is also valid, note also the comma which is also needed):

“Userinit”=”C:\WINDOWS\system32\userinit.exe,”
If the value is incorrect, modify it to the valid value data.

Your HijackThis log file is fine, so by following the steps above, you will return your computer to normalcy.  I hope I have helped you with this problem.

Brian

---------- FOLLOW-UP ----------

QUESTION: Thanx for replying. IT helped. There is one more problem,   everytime i rename any file this error comes " if you change the file name extension, the file may become unsuable" ...can u tel me what could be the possible problem for this?

Answer
Hi Anubhav

The message you are getting isn't so much an error as it is a warning: Windows is asking if you are certain you want to change the file extension.  According to SmartComputing.com, "There are two ways to handle this situation. If you want Windows to display file extensions, note the extension whenever you rename a file and be sure to type it in. For example, if you rename a file called Old.txt, make sure you type New.txt and not just New. If you don't want to deal with extensions at all, configure Windows to hide them. Double-click My Computer, click Tools, and then click Folder Options. Now select the View tab and scroll down the list until you see an option that says Hide MS-DOS File Extensions For Known File Types (or simply Hide Extensions For Known File Types) and put a check in the box next to that entry. Click Apply and the extensions disappear from all of your files. Now you can rename anything without typing an extension, and Windows will automatically retain the extension that existed before you renamed the file".  If I have helped you here, please dont forget to leave feedback, as that is all that us volunteers have to go on.  If you have any further questions, please don't hesitate to ask.  Good luck.

Brian