Avast blocking lots of malicious URL's every couple minutes

Viruses and worms
1

I am attempting to remove the viruses off a friends computer and these are a bit beyond my knowledge.

Avast has been popping up with notifications of Blocked malicious URL’s every couple minutes. However, the Avast scan came up clean.

I ran Malwarebytes and it found 3 infected files. It says that it deleted them successfully but when I load into Windows, Malwarebytes
is still telling me that it detected and blocked svchost.exe from running so I’m thinking there is still a problem.

I read through the logs post and have attached the first 3 logs . Let me know if I missed any that are needed.

Edit Forgot to add that after running Malwarebytes the Malicious URL messages are no longer popping up at all.

2

hey and welcome to the forum. thanks for attaching the necessary logs a malware expert will guide you from here.

3

Hi there

Download the latest version of TDSSKiller from here and save it to your Desktop.

[*]Doubleclick on TDSSKiller.exe to run the application

https://dl.dropbox.com/u/73555776/tdss%20start.JPG

[*]Then click on Change parameters.

https://dl.dropbox.com/u/73555776/tdss%20Change%20param.JPG

[*]Check the boxes beside Verify Driver Digital Signature and Detect TDLFS file system, then click OK.

[*]Click the Start Scan button.

[*]If a suspicious object is detected, the default action will be Skip, click on Continue.

https://dl.dropbox.com/u/73555776/tdss%20threat.JPG

[*]If malicious objects are found, they will show in the Scan results and offer three (3) options.
[*]Ensure Cure is selected, then click Continue => Reboot now to finish the cleaning process.

[*]Get the report by selecting Reports

https://dl.dropbox.com/u/73555776/tdss%20report.JPG

[*]Note: If Cure is not available, please choose Skip instead, do not choose Delete unless instructed.

Please attach its contents on your next reply. Log location C:\TDSSKiller date time

THEN

Warning This fix is only relevant for this system and no other, using on another computer may cause problems

Be advised that when the fix commences it will shut down all running processes and you may lose the desktop and icons, they will return on reboot

Run OTL

[*]Under the Custom Scans/Fixes box at the bottom, paste in the following

https://dl.dropbox.com/u/73555776/OTL_Fix.GIF


:OTL
FF - HKLM\Software\MozillaPlugins\@bestbuy.com/npBestBuyPcAppDetector,version=1.0: C:\ProgramData\Best Buy pc app\npBestBuyPcAppDetector.dll (Best Buy)
FF:64bit: - HKLM\Software\MozillaPlugins\@bestbuy.com/npBestBuyPcAppDetector,version=1.0: C:\ProgramData\Best Buy pc app\npBestBuyPcAppDetector.dll (Best Buy)
O4 - Startup: C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Best Buy pc app.lnk = C:\ProgramData\Best Buy pc app\ClickOnceSetup.exe (Microsoft)
O4 - Startup: C:\Users\Default User\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Best Buy pc app.lnk = C:\ProgramData\Best Buy pc app\ClickOnceSetup.exe (Microsoft)
[2012/11/11 07:44:18 | 000,020,480 | ---- | C] (Microsoft Corporation) -- C:\Windows\svchost.exe

:Commands
[resethosts]
[emptytemp]
[CREATERESTOREPOINT]
[Reboot]

[*]Then click the Run Fix button at the top
[*]Let the program run unhindered, reboot the PC when it is done
[*]Open OTL again and click the Quick Scan button. Post the log it produces in your next reply.

4

Hello and Thank you for the reply.

The Tdss killer seemed to run as you described it should.

When i ran the fixes with OTL as soon as it started a Windows notification popped up and said that it found a critical error and would
shut Windows down in 1 minute. Unfortunately it seemed like OTL was still working when windows shut itself down so I am not sure if
it completed as it was supposed to.

Logs are attached

5

essexboy will be back later (late) today, so be patient

6

Re-run TDSSKiller with the same parameters
When you see this element select delete :

\Device\Harddisk0\DR0 ( TDSS File System )

Avast will warn as the files are moved

Run Malwarebytes again it may find the final iteration of the svchost file, kill it

Once done let me know what problems remain

7

Ran Tdss killer and malwarebytes again and removed the files specified.
After using the computer for a bit all of the problems seem to be resolved and everything working as it should.

Thanks so much Essexboy for the walk through on removing these you were a huge help.

Also thanks Mikaelrask and Pondus for the updates.

You guys are awesome!

Thanks again.

8

Subject to no further problems :slight_smile:

I will remove my tools now and give some recommendations, but, I would like you to run for 24 hours or so and come back if you have any problems

Now the best part of the day ----- Your log now appears clean :thumbsup:

A good workman always cleans up after himself so…The following will implement some cleanup procedures as well as reset System Restore points:

Run OTL
[*]Under the Custom Scans/Fixes box at the bottom, paste in the following

:Commands [resethosts] [emptytemp] [Reboot]

[*]Then click the Run Fix button at the top
[*]Let the program run unhindered, reboot the PC when it is done

Run OTL and hit the cleanup button. It will remove all the programmes we have used plus itself.

We will now confirm that your hidden files are set to that, as some of the tools I use will change that
[*]Click Start.
[*]Open My Computer.
[*]Select the Tools menu and click Folder Options.
[*]Select the View Tab.
[*]Under the Hidden files and folders heading select Do not show hidden files and folders.
[]Click Yes to confirm.
[]Click OK.

http://users.telenet.be/bluepatchy/miekiemoes/images/javaicon.gif
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 of Java components and upgrade the application.

Upgrading Java:
[] Go to this site and click Do I have Java
[] It will check your current version and then offer to update to the latest version

Now that you are clean, to help protect your computer in the future I recommend that you get the following free programmes:

http://img233.imageshack.us/img233/7729/mbamicontw5.gif
Malwarebytes.

Update and run weekly to keep your system clean

Download and install FileHippo update checker and run it monthly it will show you which programmes on your system need updating and give a download link

If you use on-line banking then as an added layer of protection install Trusteer Rapport

It is critical to have both a firewall and anti virus to protect your system and to keep them updated. To keep your operating system up to date visit
[*]Microsoft Windows Update

To learn more about how to protect yourself while on the internet read our little guide How did I get infected in the first place ?Keep safe :wave: