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Virus causing computer to freeze


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7 replies to this topic

#1 Thom29

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Posted 30 May 2013 - 03:59 AM

Hi everyone, no doubt this has come up before but thought I'd just start a new post.

Firstly I'm not a complete computer expert so if you could keep your answers as simple as possible that would be greatly appreciated!

Basically I've got a virus on my laptop. I've worked out that its called backdoor.rustock.b and basically it's causing my computer to act ridiculously slow and freeze up during scans.

I've tried norton 360 (which is completely useless) mcafee, spyhunter 4 and iobit advanced system care all with the same results.

Obviously this is quite annoying. I've thought of maybe restoring the laptop to its original factory settings but to do this I'd lose a lot of files and photos that haven't been backed up and the computer won't let me write these files to a disc or USB stick so ideally I don't want to have to do this.

Any help on this would be greatly appreciated. The computer is less than 2 years old and I simply can't afford a new one at the minute so need this one up and running again.

Thanks.

 

Mod Edit: Moved topic from Windows 7 to a more appropriate forum. ~bloopie


Edited by bloopie, 30 May 2013 - 09:34 AM.


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#2 Broni

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Posted 30 May 2013 - 06:55 PM

Welcome aboard p22002758.gif

 

p22002970.gif Download Security Check from here or 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.

NOTE 1. If one of your security applications (e.g., third-party firewall) requests permission to allow DIG.EXE access the Internet, allow it to do so.
NOTE 2 SecurityCheck may produce some false warning(s), so leave the results reading to me.

p22002970.gif Please download Farbar Service Scanner (FSS) and run it on the computer with the issue.
  • Make sure the following options are checked:
    • Internet Services
    • Windows Firewall
    • System Restore
    • Security Center/Action Center
    • Windows Update
    • Windows Defender
    • Other Services
  • Press "Scan".
  • It will create a log (FSS.txt) in the same directory the tool is run.
  • Please copy and paste the log to your reply.


p22002970.gif 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 Winsock Entries
  • List last 10 Event Viewer log
  • List Installed Programs
  • List Devices (do NOT change any settings here)
  • List Users, Partitions and Memory size

Click Go and post the result.

p22002970.gif 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

p22002970.gifDownload Malwarebytes Anti-Rootkit from HERE to your Desktop.
  • Unzip downloaded file.
  • Open the folder where the contents were unzipped and run mbar.exe
  • Follow the instructions in the wizard to update and allow the program to scan your computer for threats.
  • DO NOT click on the Cleanup button. Simply exit the program.
  • When done, please post the two logs produced they will be in the MBAR folder..... mbar-log-xxxxx.txt and system-log.txt


p22002970.gif Please download Rkill (courtesy of BleepingComputer.com) to your desktop.
There are 2 different versions. If one of them won't run then download and try to run the other one.
You only need to get one of these to run, not all of them. You may get warnings from your antivirus about this tool, ignore them or shutdown your antivirus.

rKill.exe: http://www.bleepingcomputer.com/download/rkill/dl/10/
iExplore.exe (renamed rKill.exe): http://www.bleepingcomputer.com/download/rkill/dl/11/

  • Double-click on the Rkill desktop icon to run the tool.
  • If using Vista or Windows 7 right-click on it and choose Run As Administrator.
  • A black DOS box will briefly flash and then disappear. This is normal and indicates the tool ran successfully.
  • If not, delete the file, then download and use the one provided in Link 2.
  • Do not reboot until instructed.
  • If the tool does not run from any of the links provided, please let me know.


If normal mode still doesn't work, run the tool from safe mode.

When the scan is done Notepad will open with rKill log.
Post it in your next reply.

NOTE. rKill.txt log will also be present on your desktop.

NOTE Do NOT wrap your logs in "quote" or "code" brackets.


My Website

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My help doesn't cost a penny, but if you'd like to consider a donation, click p22001735.gif


 


#3 Thom29

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Posted 05 June 2013 - 10:08 AM

Thanks for this. If I could access my computer I'd try it! J fortunately when powering up my laptop all I'm now getting is a white screen and I'm unable to do anything! Any tips or is my laptop simply dead?

#4 Broni

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Posted 05 June 2013 - 05:11 PM

I see...

 

I'll report this topic to appropriate helpers.

Hold on there....


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#5 JSntgRvr

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Posted 05 June 2013 - 07:25 PM

Hi and welcome.

Please download Farbar Recovery Scan Tool and save it to a flash drive.

Note: You need to run the version compatible with your system. If you are not sure which version applies to your system download both of them and try to run them. Only one of them will run on your system, that will be the right version.

Plug the flash drive into the infected PC.

  • If you are using Windows 8 consult How to use the Windows 8 System Recovery Environment Command Prompt to enter System Recovery Command prompt.

    If you are using Vista or Windows 7 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.
  • Select US as the keyboard 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.
  • Note: In case you can not enter System Recovery Options by using F8 method, you can use Windows installation disc, or make a repair disc. Any Windows installation disc or a repair disc made on another computer can be used.
    To make a repair disk on Windows 7 consult: http://www.sevenforums.com/tutorials/2083-system-repair-disc-create.html



    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.
  • Select US as the keyboard 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.
  • 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

    Once in the 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 (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 disclaimer.
  • Press Scan button.
  • It will make a log (FRST.txt) on the flash drive. Please copy and paste it to your reply.

 

 

 


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#6 boopme

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Posted 05 June 2013 - 09:15 PM

Hello, just letting you know your topic was moved to here in the Virus, Trojan, Spyware, and Malware Removal Logs forum where it will stay.


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#7 HelpBot

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Posted 05 June 2013 - 09:20 PM

Are you still with us?


Edited by JSntgRvr, 06 June 2013 - 11:05 AM.


#8 HelpBot

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Posted 10 June 2013 - 09:25 PM

Hello again!

I haven't heard from you in 5 days. Therefore, I am going to assume that you no longer need our help, and close this topic.

If you do still need help, please send a Private Message to any Moderator within the next five days. Be sure to include a link to your topic in your Private Message.

Thank you for using Bleeping Computer, and have a great day!




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