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svchost.exe virus!


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16 replies to this topic

#1 DonutSpanker

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Posted 11 January 2013 - 06:31 PM

I keep getting svchost.exe detected on my malwarebytes and i quarantine it and then delete it... but it is not gone because my cpu usage meter still drops, then sky rockets back up. So I found Combofix, which actually worked... it would delete it and without having anything running I would go to my normal 00%-03% usage on my cpu meter.... until I turned off my computer and rebooted it. Then, again malwarebytes would detect it and it would be back in bogging my computer and giving me bluescreens from time to time. Since I have been lazy and not contacted you guys first, my combofix has "expired" and I cannot get the virus away, lucky enough my computer isn't bluescreening, so i can get it fixed with help. Please respond ASAP, thank you so much!

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#2 CatByte

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Posted 11 January 2013 - 07:22 PM

what operating system are you using and please post the ComboFix log

(it will be located at C:\ComboFix.txt)

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#3 DonutSpanker

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Posted 11 January 2013 - 08:15 PM

I have Windows 7 Home Premium

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#4 CatByte

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Posted 11 January 2013 - 09:05 PM

Please run the following:

Please download TDSSKiller.zip
  • Extract it to your desktop
  • Double click TDSSKiller.exe
  • when the window opens, click on Change Parameters
  • under ”Additional options”, put a check mark in the box next to “Detect TDLFS File System”
  • click OK
  • Press Start Scan
    • If Malicious objects are found then ensure Cure is selected
    • If TDLFS File System/TDSS File system is found then ensure Cure is selected (if cure is not available, choose skip)
    • Then click Continue > Reboot now
  • Copy and paste the log in your next reply
    • A copy of the log will be saved automatically to the root of the drive (typically C:\)

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#5 DonutSpanker

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Posted 11 January 2013 - 09:28 PM

Malwarebytes popped up again later on after reboot and i put it in quarantine and deleted it, not sure if its there or not but its definatley odd.

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#6 CatByte

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Posted 11 January 2013 - 09:40 PM

it appears that our tools are having a difficult time with this particular variant, so we'll approach if from a different angle

Please do the following:

Download the appropriate version for your system of the Farbar Recovery Scan Tool and save it to a flash drive.


Plug the flashdrive into the infected PC.

Enter System Recovery Options.

To enter System Recovery Options from the Advanced Boot Options:
  • Restart the computer.
  • As soon as the BIOS is loaded begin tapping the F8 key until Advanced Boot Options appears.
  • Use the arrow keys to select the Repair your computer menu item.
  • Choose your language settings, and then click Next.
  • Select the operating system you want to repair, and then click Next.
  • Select your user account and click Next.
To enter System Recovery Options by using Windows installation disc:
  • Insert the installation disc.
  • Restart your computer.
  • If prompted, press any key to start Windows from the installation disc. If your computer is not configured to start from a CD or DVD, check your BIOS settings.
  • Click Repair your computer.
  • Choose your language settings, and then click Next.
  • Select the operating system you want to repair, and then click Next.
  • Select your user account an click Next.
On the System Recovery Options menu you will get the following options:
Startup Repair
System Restore
Windows Complete PC Restore
Windows Memory Diagnostic Tool
Command Prompt
[*]Select Command Prompt
[*]In the command window type in notepad and press Enter.
[*]The notepad opens. Under File menu select Open.
[*]Select "Computer" and find your flash drive letter and close the notepad.
[*]In the command window type e:\frst.exe (for x64 bit version type e:\frst64) and press Enter
Note: Replace letter e with the drive letter of your flash drive.
[*]The tool will start to run.
[*]When the tool opens click Yes to the disclaimer.
[*]Place a check next to List Drivers MD5 as well as the default check marks that are already there
[*]Press Scan button.
[*]type exit and reboot the computer normally
[*]FRST will make a log (FRST.txt) on the flash drive, please copy and paste the log in your reply.[/list]

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#7 DonutSpanker

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Posted 11 January 2013 - 10:24 PM

So far the svchost.exe has not popped up from malwarebytes.. but I won't underestimate this demon of a virus yet lol.. here is the frst report

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  • Attached File  FRST.txt   45.64KB   3 downloads


#8 CatByte

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Posted 11 January 2013 - 10:32 PM

well, it appears as though TDSSKiller may have dealt with it on the last reboot as there are no obvious signs of anything in the FRST log

Please run the following:

Please download Junkware Removal Tool to your desktop.
  • Shutdown your antivirus to avoid any conflicts.
  • Right-mouse click JRT.exe and select Run as administrator
  • The tool will open and start scanning your system.
  • Please be patient as this can take a while to complete.
  • On completion, a log (JRT.txt) is saved to your desktop and will automatically open.
  • Post the contents of JRT.txt into your next message


NEXT


Download AdwCleaner from here and save it to your desktop.
  • Run AdwCleaner and select Delete
  • Once done it will ask to reboot, allow the reboot
  • On reboot a log will be produced, please attach the content of the log to your next reply


NEXT

  • Please open your MalwareBytes AntiMalware Program
  • Click the Update Tab and search for updates
  • If an update is found, it will download and install the latest version.
  • Once the program has loaded, select "Perform Quick Scan", then click Scan.
  • The scan may take some time to finish, so please be patient.
  • When the scan is complete, click OK, then Show Results to view the results.
  • Make sure that everything is checked, and click Remove Selected. <-- very important
  • When disinfection is completed, a log will open in Notepad and you may be prompted to Restart. (See Extra Note)
  • The log is automatically saved by MBAM and can be viewed by clicking the Logs tab in MBAM.
  • Copy&Paste the entire report in your next reply.

Extra Note:If MBAM encounters a file that is difficult to remove, you will be presented with 1 of 2 prompts, click OK to either and let MBAM proceed with the disinfection process, if asked to restart the computer, please do so immediately.



NEXT


Go here to run an online scanner from ESET.
  • Turn off the real time scanner of any existing antivirus program while performing the online scan
  • Tick the box next to YES, I accept the Terms of Use.
  • Click Start
  • When asked, allow the activeX control to install
  • Click Start
  • Make sure that the option Remove found threats is unticked and the Scan Archives option is ticked.
  • Click on Advanced Settings, ensure the options Scan for potentially unwanted applications, Scan for potentially unsafe applications, and Enable Anti-Stealth Technology are ticked.
  • Click Scan
  • Wait for the scan to finish
  • When the scan completes, press the LIST OF THREATS FOUND button
  • Press EXPORT TO TEXT FILE , name the file ESETSCAN and save it to your desktop
  • Include the contents of this report in your next reply.
  • Press the BACK button.
  • Press Finish

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#9 DonutSpanker

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Posted 12 January 2013 - 06:56 AM

yikes..looks like it found 6 threats on the ESET scan, but maby there harmless? By the way I won't be home most of this afternoon, but respond back anyway.. thanks :)

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Edited by DonutSpanker, 12 January 2013 - 07:56 AM.


#10 CatByte

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Posted 12 January 2013 - 09:08 AM

Please run the following:

  • Very Important! Temporarily disable your anti-virus, script blocking and any anti-malware real-time protection before following the steps below.
  • They can interfere with ComboFix or remove some of its embedded files which may cause "unpredictable results".
Copy/paste the text inside the Codebox below into notepad:

Here's how to do that:
Press the WinKey + R to open a run box, type Notepad > click OK.
This will open an empty notepad file:

Copy all the text inside of the code box - Press Ctrl+C (or right click on the highlighted section and choose 'copy')

File::
C:\Users\Marlane\AppData\Local\Google\Chrome\User Data\Default\Default\aadcddgddgdggcdadfdgdhgfdedgdadb\background.html	
C:\Users\Marlane\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\8\f919d48-622250dc	
C:\Users\Marlane\Downloads\GraboidVideoSetup-3.26.exe.dap	
C:\Windows\System32\config\systemprofile\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\53\3f15c435-3d991a55	
C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\53\3f15c435-3d991a55	

ClearJavaCache::

Now paste the copied text into the open notepad - press CTRL+V (or right click and choose 'paste')

Save this file to your desktop, Save this as "CFScript"


Here's how to do that:

1.Click File;
2.Click Save As... Change the directory to your desktop;
3.Change the Save as type to "All Files";
4.Type in the file name: CFScript
5.Click Save ...

Posted Image
  • Referring to the screenshot above, drag CFScript.txt into ComboFix.exe.
  • ComboFix may request an update; please allow it.
  • ComboFix will now run a scan on your system. It may reboot your system when it finishes. This is normal.
  • When finished, it shall produce a log for you.
  • Copy and paste the contents of the log in your next reply.

CAUTION: Do not mouse-click ComboFix's window while it is running. That may cause it to stall.



NEXT



Press the WinKey + R to open a run box, then copy/paste the bolded text below > press Enter. A text file will pop up, please post the contents of that file.


"C:\Qoobox\Add-Remove Programs.txt" > uninstall.txt& start uninstall.txt


NEXT


Please advise how the computer is running now and if there are any outstanding issues

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#11 DonutSpanker

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Posted 12 January 2013 - 09:34 AM

Seems like its running ok but RAM is running 45% so not sure..

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#12 CatByte

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Posted 12 January 2013 - 11:08 AM

Please run the following:


Please download Windows Repair (all in one) from here

Install the program then run it

Go to step 2 and allow it to run Disk check

Posted Image

Once that is done then go to step 3 and allow it to run SFC

Posted Image

On the the Start Repairs tab => Click the Start

Posted Image

Click on the select all check box and then click on Start

DON'T use the computer while each scan is in progress.

Restart may be needed to finish the repair procedure.


NEXT

Visit ADOBE and download the latest version of Acrobat Reader (version XI)
Having the latest updates ensures there are no security vulnerabilities in your system.

NEXT

Posted Image
Your Java is out of date. Older versions have vulnerabilities that malware can use to infect your system. Please follow these steps to remove older version Java components and update.
  • Download the latest version of Java Runtime Environment (JRE) 7 and Save it to your Desktop.
  • Scroll down to where it says Java SE 7u10
  • Click the Download button under JRE to the right.
  • Read the License Agreement then select Accept License Agreement
  • Click on the link to download Windows x86 Offline and save the file to your desktop.
  • Close any programs you may have running - especially your web browser.
  • Go to Start > Control Panel, double-click on Add or Remove Programs and remove all older versions of Java.
  • Check (highlight) any item with Java Runtime Environment (JRE or J2SE or Java™ 6) in the name.
  • Click the Remove or Change/Remove button.
  • Repeat as many times as necessary to remove each Java versions.
  • Reboot your computer once all Java components are removed.
  • Then from your desktop double-click on jre-7u10-windows-i586.exe to install the newest version.
  • After the install is complete, go into the Control Panel (using Classic View) and double-click the Java Icon. (looks like a coffee cup)
  • On the General tab, under Temporary Internet Files, click the Settings button.
  • Next, click on the Delete Files button
  • There are three options in the window to clear the cache - Leave these two Checked

    Trace and Log Files
    Cached Applications and Applets
  • Click OK on Delete Temporary Files Window
    Note: This deletes ALL the Downloaded Applications and Applets from the CACHE.
  • Click OK to leave the Temporary Files Window
  • Click OK to leave the Java Control Panel.
[/list]


NEXT


Please let me know if there are any outstanding issues

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#13 DonutSpanker

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Posted 12 January 2013 - 08:13 PM

I think you might have got it! but i have one problem.. i seem to be really slow with kbps on youtube and stuff compared to others on youtube... here is a screenshot of my chart i was given on the speed test, any ideas?

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#14 CatByte

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Posted 12 January 2013 - 10:36 PM

I would talk to your ISP about that issue. How old is your system?

It isn't malware related, so you might want to start a thread in the Win 7 forum and see if the techs have any ideas how to tweak your performance

In the mean time, we have some housekeeping to do:


Please do the following:


You can delete the TDSSKiller, JRT and the Farbar logs and programs from your desktop.


NEXT


Follow these steps to uninstall Combofix

  • Make sure your security programs are totally disabled.
  • Press the WinKey +R to open a run box
  • Now copy/paste Combofix /uninstall into the runbox and click OK. Note the space between the ..X and the /U, it needs to be there.

Posted Image


NEXT

  • Double click on adwcleaner.exe to run the tool.
  • Click on Uninstall.
  • Confirm with yes.


If there are any logs/tools remaining on your desktop > right click and delete them.


NEXT


Below I have included a number of recommendations for how to protect your computer against malware infections.

  • It is good security practice to change your passwords to all your online accounts on a fairly regular basis, this is especially true after an infection. Refer to this Microsoft article
    Strong passwords: How to create and use them
    Then consider a password keeper, to keep all your passwords safe. KeePass is a small utility that allows you to manage all your passwords.

  • Keep Windows updated by regularly checking their website at :
    http://windowsupdate.microsoft.com/
    This will ensure your computer has always the latest security updates available installed on your computer.

  • Make Internet Explorer more secure
    • Click Start > Run
    • Type Inetcpl.cpl & click OK
    • Click on the Security tab
    • Click Reset all zones to default level
    • Make sure the Internet Zone is selected & Click Custom level
    • In the ActiveX section, set the first two options ("Download signed and unsigned ActiveX controls) to "Prompt", and ("Initialize and Script ActiveX controls not marked as safe") to "Disable".
    • Next Click OK, then Apply button and then OK to exit the Internet Properties page.

  • Download TFC to your desktop
    • Close any open windows.
    • Double click the TFC icon to run the program
    • TFC will close all open programs itself in order to run,
    • Click the Start button to begin the process.
    • Allow TFC to run uninterrupted.
    • The program should not take long to finish it's job
    • Once its finished it should automatically reboot your machine,
    • if it doesn't, manually reboot to ensure a complete clean
    It's normal after running TFC cleaner that the PC will be slower to boot the first time.

  • WOT, Web of Trust, warns you about risky websites that try to scam visitors, deliver malware or send spam. Protect your computer against online threats by using WOT as your front-line layer of protection when browsing or searching in unfamiliar territory. WOT's color-coded icons show you ratings for 21 million websites, helping you avoid the dangerous sites:
    • Green to go
    • Yellow for caution
    • Red to stop
    WOT has an addon available for both Firefox and IE

  • Keep a backup of your important files - Now, more than ever, it's especially important to protect your digital files and memories. This article is full of good information on alternatives for home backup solutions.

  • ERUNT (Emergency Recovery Utility NT) allows you to keep a complete backup of your registry and restore it when needed. The standard registry backup options that come with Windows back up most of the registry but not all of it. ERUNT however creates a complete backup set, including the Security hive and user related sections. ERUNT is easy to use and since it creates a full backup, there are no options or choices other than to select the location of the backup files. The backup set includes a small executable that will launch the registry restore if needed.

  • In light of your recent issue, I'm sure you'd like to avoid any future infections. Please take a look at these well written articles:
    PC Safety and Security--What Do I Need?.
  • Simple and easy ways to keep your computer safe and secure on the Internet

Thank you for your patience, and performing all of the procedures requested.

Please respond one last time so we can consider the thread resolved and close it, thank-you.

Edited by CatByte, 12 January 2013 - 10:54 PM.

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#15 DonutSpanker

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Posted 12 January 2013 - 10:50 PM

well i will take my next issue to windows 7 board haha, Catbyte I can't thank you enough for all the help you are a lifesaver!!




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