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Scvhost In Svcd Directory

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#1 Whammer


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Posted 03 February 2008 - 10:43 AM

I have a PC that has numerous pop-ups running when I lauch IE. I have AVG running and it finds ntload.sys everytime I log in, but never deletes it or moves it to the Chest when I ask it it to. I just ran Adware it that founds C:\windows\system32\svcd directory, but cant delete it. In that folder is a file svchost, that too cannot be deleted/renamed/moved. Pop-ups also ask to download Malware Alarm. It's becoming frustrating and have run out of ideas on what to do. Any assistance would be greatly appreciated. If this is not the correct forum, I apologize, please let me know where this post should go. Thank you.

Edited by Whammer, 03 February 2008 - 10:45 AM.

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#2 quietman7


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Posted 03 February 2008 - 01:56 PM

Welcome to BC Whammer

One or more of the identified infections is related to a nasty rootkit componet. Rootkits are very dangerous because they use advanced techniques as a means of accessing a computer system that bypasses security mechanisms and steal sensitive information which they send back to the hacker. Many rootkits can hook into the Windows 32-bit kernel, and patch several APIs to hide new registry keys and files they install. Remote attackers use backdoor Trojans and rootkits as part of an exploit to to gain unauthorized access to a computer and take control of it without your knowledge.

If your computer was used for online banking, has credit card information or other sensitive data on it, you should immediately disconnect from the Internet until your system is cleaned. All passwords should be changed immediately to include those used for banking, email, eBay, paypal and online forums. You should consider them to be compromised. They should be changed by using a different computer and not the infected one. If not, an attacker may get the new passwords and transaction information. Banking and credit card institutions should be notified of the possible security breach.

Although the rootkit has been identified and may be removed, your PC has likely been compromised and there is no way to be sure the computer can ever be trusted again. It is dangerous and incorrect to assume that because the rootkit has been removed the computer is now secure. Many experts in the security community believe that once infected with this type of malware, the best course of action is to reformat and reinstall the OS. Please read "When should I re-format?" and "Reformatting the computer or troubleshooting; which is best?".

Should you decide not to follow that advice, we will do our best to help clean the computer of any infections but we cannot guarantee it to be trustworthy or that the removal will be successful. If you wish to proceed, please do the following.

Please download SDFix by AndyManchesta and save it to your desktop.
alternate zipped version
When using this tool, you must use the Administrator's account or an account with "Administrative rights"
  • Very Important! Temporarily disable your anti-virus, script blocking and any anti-malware real-time protection before performing a scan. They can interfere with SDFix or remove some of its embedded files which may cause "unpredictable results".
  • Click on this link to see a list of programs that should be disabled. The list is not all inclusive.
  • Disconnect from the Internet before running SDFix.
  • Double click SDFix.exe and it will extract the files to %systemdrive%
  • (this is the drive that contains the Windows Directory, typically C:\SDFix).
  • DO NOT use it just yet.
Reboot your computer in "Safe Mode" using the F8 method. To do this, restart your computer and after hearing your computer beep once during startup (but before the Windows icon appears) press the F8 key repeatedly. A menu will appear with several options. Use the arrow keys to navigate and select the option to run Windows in "Safe Mode".

Open the SDFix folder and double click RunThis.bat to start the script.
  • Type Y to begin the cleanup process.
  • It will remove any Trojan Services or Registry Entries found then prompt you to press any key to Reboot.
  • Press any Key and it will restart the PC.
  • When the PC restarts, the Fixtool will run again and complete the removal process then display Finished, press any key to end the script and load your desktop icons.
  • Once the desktop icons load, the SDFix report will open on screen and also save a copy into the SDFix folder as Report.txt.
  • Copy and paste the contents of Report.txt in your next reply.
  • Be sure to re-enable your anti-virus and other security programs before connecting to the Internet.
-- If this error message is displayed when running SDFix: "The command prompt has been disabled by your administrator. Press any key to continue..."
Please go to Start Menu > Run > and copy/paste the following line:
%systemdrive%\SDFix\apps\swreg IMPORT %systemdrive%\SDFix\apps\Enable_Command_Prompt.reg
Press Ok and then run SDFix again.

-- If the Command Prompt window flashes on then off again on XP or Win 2000, please go to Start Menu > Run > and copy/paste the following line:
%systemdrive%\SDFix\apps\FixPath.exe /Q
Reboot and then run SDFix again.

-- If SDFix still does not run, check the %comspec% variable. Right-click My Computer > click Properties > Advanced > Environment Variables and check that the ComSpec variable points to cmd.exe.

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#3 Whammer

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Posted 03 February 2008 - 03:53 PM

Thanks for the welcome and your assistance. I'm going to give this a shot before reformatting the PC. Here is the log:

SDFix: Version 1.136

Run by Donna on Sun 02/03/2008 at 02:36 PM

Microsoft Windows XP [Version 5.1.2600]

Running From: C:\SDFix

Safe Mode:
Checking Services:

Restoring Windows Registry Values
Restoring Windows Default Hosts File


Normal Mode:
Checking Files:

Trojan Files Found:

C:\WINDOWS\mrofinu572.exe - Deleted
C:\WINDOWS\system32\CID - Deleted
C:\WINDOWS\system32\pac.txt - Deleted
C:\WINDOWS\system32\TmpX.exe - Deleted
C:\WINDOWS\system32\upds.log - Deleted
C:\WINDOWS\system32\url1 - Deleted
C:\WINDOWS\system32\url2 - Deleted
C:\WINDOWS\system32\url3 - Deleted
C:\WINDOWS\system32\winupdate.exe - Deleted
C:\WINDOWS\system32\wscmp.dll - Deleted
C:\WINDOWS\tk58.exe - Deleted

Could Not Remove C:\WINDOWS\system32\drivers\core.cache.dsk

Folder C:\Program Files\Temporary - Removed
Folder C:\Temp\tn3 - Removed

Removing Temp Files...

ADS Check:

Final Check:

catchme 0.3.1344.2 W2K/XP/Vista - rootkit/stealth malware detector by Gmer, http://www.gmer.net
Rootkit scan 2008-02-03 15:42:52
Windows 5.1.2600 Service Pack 2 NTFS

scanning hidden processes ...

scanning hidden services & system hive ...

scanning hidden registry entries ...

scanning hidden files ...

scan completed successfully
hidden processes: 0
hidden services: 0
hidden files: 0

Remaining Services:

Authorized Application Key Export:



Remaining Files:
C:\WINDOWS\system32\drivers\core.cache.dsk Found

File Backups: - C:\SDFix\backups\backups.zip

Files with Hidden Attributes:

Sun 27 Jan 2008 28,914 ..SH. --- "C:\WINDOWS\system32\xmhivzul.dllbox"
Mon 9 Apr 2007 8 A..H. --- "C:\Documents and Settings\Donna\Application Data\Gtek\GTUpdate\AUpdate\Channels\ch_u1\lock.tmp"
Mon 9 Apr 2007 8 A..H. --- "C:\Documents and Settings\Donna\Application Data\Gtek\GTUpdate\AUpdate\Channels\ch_u2\lock.tmp"
Mon 9 Apr 2007 8 A..H. --- "C:\Documents and Settings\Donna\Application Data\Gtek\GTUpdate\AUpdate\Channels\ch_u3\lock.tmp"
Mon 9 Apr 2007 8 A..H. --- "C:\Documents and Settings\Donna\Application Data\Gtek\GTUpdate\AUpdate\Channels\ch_u4\lock.tmp"
Sat 2 Feb 2008 8 A..H. --- "C:\Documents and Settings\Donna\Application Data\Gtek\GTUpdate\AUpdate\Channels\ch_u5\lock.tmp"


#4 quietman7


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Posted 03 February 2008 - 03:57 PM

The next step will require further investigation to identify the driver protecting core.cache.dsk and probably the use of more powerful tools than we recommend in this forum to remove it. Before that can be done you will need you to create and post a hijackthis log.

Please read the pinned topic titled "Preparation Guide For Use Before Posting A Hijackthis Log". In step #9 there are instructions for downloading HijackThis and creating a log. (This is a self-extracting version which will automatically install the current version of HJT in the proper location.) If using Windows Vista, be sure to Run As Administrator.

When you have done that, post your log in the HijackThis Logs and Malware Removal forum, NOT here, for assistance by the HJT Team Experts. A member of the Team will walk you through, step by step, on how to clean your computer. If you post your log back in this thread, the response from the HJT Team will be delayed because your post will have to be moved. This means it will fall in line behind any others posted that same day.

Start a new topic, give it a relevant title and post your log along with a brief description of your problem, a summary of any anti-malware tools you have used and a summary of any steps that you have performed on your own. Please include the top portion of the HijackThis log that lists version information. An expert will analyze your log and reply with instructions advising you what to fix. After doing this, we would appreciate if you post a link to your log back here so we know that your getting help from the HJT Team.

Please be patient. It may take a while to get a response because the HJT Team members are very busy working logs posted before yours. They are volunteers who will help you out as soon as possible. Once you have made your post and are waiting, please DO NOT "bump" your post or make another reply until it has been responded to by a member of the HJT Team. Generally the staff checks the forum for postings that have 0 replies as this makes it easier for them to identify those who have not been helped. If you post another response there will be 1 reply. A team member, looking for a new log to work may assume another HJT Team member is already assisting you and not open the thread to respond.
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