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Svchost Virus, How do I remove it?


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#1 JakeCWolf

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Posted 31 August 2011 - 04:43 PM

Greetings,

I'm new to the forums so forgive me if for some reason this is in the wrong place but I'm having trouble with Scvhost, I'm nearly 100% certain a virus or the like is running from it, and has been for sometime.

Many months ago I started seeing that my CPU was at 100%, and was slowing everything else down considerably. I paid no mind to it for the longest time, that is until I learned malware can run hidden within Scvhost, and cause many, many problems with it.

The Svchost instance in question takes up almost all of my available CPU, and does so often, when I forcefully end the process it simply restarts a few minutes later, rinse repeat, not working evidently.

I went of CNET and downloaded a little program called "Svchost Process Analyzer", it listed all of the Svchost running and told me what they where doing, it even flagged four of them as suspicious, and two of the four refused to display and information about them, including where they where, citing "I wasn't the administrator", I'm the only active account on my PC, and should have full Admin rights.

At this point I'm probably sounded like a broken record, as I'm sure I'm about the one millionth newb to ask this here, but I just need to make sure I know what I have to do to fix this mess.

I've heard people say the best thing to do is to download Combofix and let it run and find the malware and delete it, but experience has taught me to only believe a piece of anything I see on the internet.

Getting to the point of this post, can some direct me to a step by step guide as to how to rid myself of the Svchost virus and keep it gone for good. I’ve had to reinstall my Operating System to fix a very bad attack years ago, and would like to avoid doing it again (It caused some problems of its own, asking me to choose which OS to boot every time I fire up my PC, but that’s a another post in and of itself.)

For those interested I have a stock Dell E310, and run Windows XP Home Service Package 3.

Thank you in advance for any help that can be rendered,

Regards,

Jake

EDIT: On a possibly related note, I for some reason have no sound now... It says I have no Sound Device, I'm not sure if this is related or not...

Edited by JakeCWolf, 31 August 2011 - 05:27 PM.
Moved from XP to Am I Infected.


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#2 Broni

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Posted 31 August 2011 - 11:29 PM

Welcome aboard Posted Image

Download Security Check from HERE, and save it to your Desktop.

* Double-click SecurityCheck.exe
* Follow the onscreen instructions inside of the black box.
* A Notepad document should open automatically called checkup.txt; please post the contents of that document.

=============================================================================

Please download MiniToolBox and run it.

Checkmark following boxes:
  • Report IE Proxy Settings
  • Report FF Proxy Settings
  • List content of Hosts
  • List IP configuration
  • List last 10 Event Viewer log
  • List Installed Programs
  • List Users, Partitions and Memory size
Click Go and post the result.

=============================================================================

Download Malwarebytes' Anti-Malware (aka MBAM): https://www.bleepingcomputer.com/download/malwarebytes-anti-malware/ to your desktop.

* Double-click mbam-setup.exe and follow the prompts to install the program.
* At the end, be sure a checkmark is placed next to Update Malwarebytes' Anti-Malware and Launch Malwarebytes' Anti-Malware, then click Finish.
* 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.
* When the scan is complete, click OK, then Show Results to view the results.
* Be sure that everything is checked, and click Remove Selected.
* When completed, a log will open in Notepad.
* Post the log back here.

Be sure to restart the computer.

The log can also be found here:
C:\Documents and Settings\Username\Application Data\Malwarebytes\Malwarebytes' Anti-Malware\Logs\log-date.txt
Or at C:\Program Files\Malwarebytes' Anti-Malware\Logs\log-date.txt

=============================================================================

Please download GMER from one of the following locations and save it to your desktop:
  • Main Mirror
    This version will download a randomly named file (Recommended)
  • Zipped Mirror
    This version will download a zip file you will need to extract first. If you use this mirror, please extract the zip file to your desktop.
  • Disconnect from the Internet and close all running programs.
  • Temporarily disable any real-time active protection so your security programs will not conflict with gmer's driver.
  • Double-click on the randomly named GMER file (i.e. n7gmo46c.exe) and allow the gmer.sys driver to load if asked.
  • Note: If you downloaded the zipped version, extract the file to its own folder such as C:\gmer and then double-click on gmer.exe.

    Posted Image
  • GMER will open to the Rootkit/Malware tab and perform an automatic quick scan when first run. (do not use the computer while the scan is in progress)
  • If you receive a WARNING!!! about rootkit activity and are asked to fully scan your system...click NO.
  • Now click the Scan button. If you see a rootkit warning window, click OK.
  • When the scan is finished, click the Save... button to save the scan results to your Desktop. Save the file as gmer.log.
  • Click the Copy button and paste the results into your next reply.
  • Exit GMER and be sure to re-enable your anti-virus, Firewall and any other security programs you had disabled.

IMPORTANT! If for some reason GMER refuses to run, try again.
If it still fails, try to UN-check "Devices" in right pane.
If still no joy, try to run it from Safe Mode.

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#3 JakeCWolf

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Posted 01 September 2011 - 06:47 PM

Thank you for your help, but I don't feel like I can trust you, your doing nothing to reassure me, just asking me to download programs from people I don't trust, I'd rather format my PC than download and run things I don't trust...

#4 Jayson201

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Posted 01 September 2011 - 07:09 PM

Thank you for your help, but I don't feel like I can trust you, your doing nothing to reassure me, just asking me to download programs from people I don't trust, I'd rather format my PC than download and run things I don't trust...



Jake, Every link, every program that you are asked to click on or use is 100% safe and reliable. As for your sound not working, restart your computer.
Your best bet to find a virus in you computer is to follow the directions given here. I can vouch for Malwarebytes Anti Malware all the way, if that helps you any, if at all. Many occasions MBAM has saved my ass, and earned me a bag of doritos (Used it to clean up my Aunt's friends computer, got payed with food.)

If you don't want to download any programs, at least get Malwarebytes Anti Malware and do a quick or full scan with it. Otherwise we can't help you. Formatting wont help you either.

#5 Broni

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Posted 01 September 2011 - 09:19 PM

Thank you for your help, but I don't feel like I can trust you, your doing nothing to reassure me, just asking me to download programs from people I don't trust, I'd rather format my PC than download and run things I don't trust...

It's your computer and surely it's your choice.
Without seeing some scan results it's impossible to advice.

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