Malicious URL Blocked - SVC Host

Viruses and worms
1

Hi everyone,

I am getting bombarded with pop-up notifications from Avast informing me that a malicious url has been blocked, all referencing SVC Host. MalwareBytes seems to clean it each time I run it, but everytime I reboot, I receive a message from MB that ‘a malicious program has attempted to launch.’ I quarantine it, but it just won’t seem to go away completely. I have run the steps in the sticky at the top of this topic through the OTL scan, and I have attached all of the logs below. I thought about running MB in safe mode to see if it can completely clean the infection, but I thought I would ask for some assistance here.

Thank you for any assistance you can provide!

2

A malware removal specialist has been informed of your topic.

3

Hi there I think I will go straight for the jugular on this one

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 copy and paste its contents on your next reply.

THEN

Run a fresh OTL scan please

4

Thank you for your help! I downloaded the TDSSKiller tool, and it identified three items. I was able to select ‘Cure’ for one of them. After rebooting, I also re-ran the OTL tool. The TDSSKiller report text, the image from the TDSSKiller Results, and the revised OTL report are attached below.

TDSSKiller Report:

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

13:30:31.0582 4408 TDSS rootkit removing tool 2.8.15.0 Oct 31 2012 21:47:35
13:30:31.0957 4408 ============================================================
13:30:31.0957 4408 Current date / time: 2012/11/11 13:30:31.0957
13:30:31.0957 4408 SystemInfo:
13:30:31.0957 4408
13:30:31.0957 4408 OS Version: 6.1.7601 ServicePack: 1.0
13:30:31.0957 4408 Product type: Workstation
13:30:31.0957 4408 ComputerName: MIKE-XPS17
13:30:31.0957 4408 UserName: Mike
13:30:31.0957 4408 Windows directory: C:\Windows
13:30:31.0957 4408 System windows directory: C:\Windows
13:30:31.0957 4408 Running under WOW64
13:30:31.0957 4408 Processor architecture: Intel x64
13:30:31.0957 4408 Number of processors: 8
13:30:31.0957 4408 Page size: 0x1000
13:30:31.0957 4408 Boot type: Normal boot
13:30:31.0957 4408 ============================================================
13:30:32.0986 4408 BG loaded
13:30:33.0330 4408 Drive \Device\Harddisk0\DR0 - Size: 0x3B9E656000 (238.47 Gb), SectorSize: 0x200, Cylinders: 0x799A, SectorsPerTrack: 0x3F, TracksPerCylinder: 0xFF, Type ‘K0’, Flags 0x00000040
13:30:34.0453 4408 Drive \Device\Harddisk1\DR1 - Size: 0x950B056000 (596.17 Gb), SectorSize: 0x200, Cylinders: 0x13001, SectorsPerTrack: 0x3F, TracksPerCylinder: 0xFF, Type ‘K0’, Flags 0x00000040
13:30:34.0468 4408 ============================================================
13:30:34.0468 4408 \Device\Harddisk0\DR0:
13:30:34.0468 4408 MBR partitions:
13:30:34.0468 4408 \Device\Harddisk0\DR0\Partition1: MBR, Type 0x7, StartLBA 0x139C5, BlocksNum 0x1D4C000
13:30:34.0468 4408 \Device\Harddisk0\DR0\Partition2: MBR, Type 0x7, StartLBA 0x1D5F9C5, BlocksNum 0x1BF930EB
13:30:34.0468 4408 \Device\Harddisk1\DR1:
13:30:34.0468 4408 MBR partitions:
13:30:34.0468 4408 \Device\Harddisk1\DR1\Partition1: MBR, Type 0x7, StartLBA 0x800, BlocksNum 0x4A857000
13:30:34.0468 4408 ============================================================
13:30:34.0468 4408 C: ↔ \Device\Harddisk0\DR0\Partition2
13:30:34.0484 4408 D: ↔ \Device\Harddisk1\DR1\Partition1
13:30:34.0484 4408 ============================================================
13:30:34.0484 4408 Initialize success
13:30:34.0484 4408 ============================================================

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

Thanks again!

5

OK re-run TDSSKiller with the same parameters
When this appears select delete

\Device\Harddisk0\DR0 ( TDSS File System )

Avast will alert when the files are moved

THEN

Download and Install Combofix

Download ComboFix from one of the following locations:
Link 1
Link 2

VERY IMPORTANT !!! Save ComboFix.exe to your Desktop

  • IMPORTANT - Disable your AntiVirus and AntiSpyware applications, usually via a right click on the System Tray icon. They may otherwise interfere with our tools. If you have difficulty properly disabling your protective programs, refer to this link here

[*]Double click on ComboFix.exe & follow the prompts.
[*]Accept the disclaimer and allow to update if it asks

http://img.photobucket.com/albums/v706/ried7/NSIS_disclaimer_ENG.png

http://img.photobucket.com/albums/v706/ried7/NSIS_extraction.png

[*]When finished, it shall produce a log for you.
[*]Please include the C:\ComboFix.txt in your next reply.

Notes:

  1. Do not mouse-click Combofix’s window while it is running. That may cause it to stall.
  2. Do not “re-run” Combofix. If you have a problem, reply back for further instructions.
  3. If after the reboot you get errors about programmes being marked for deletion then reboot, that will cure it.

Please make sure you include the combo fix log in your next reply as well as describe how your computer is running now

6

My PC seems to be running fine after re-running the TDSSKiller and downloading and running ComboFix. I did get a ‘Rootkit Blocked’ pop-up from Avast when proceeding with a delete action on the entry you specified (\Device\Harddisk0\DR0 (TDSS File System)). I did not get prompted to reboot after either the second run of TDSSKiller or the ComboFix. I have pasted the TDSS Report below and attached the C:\Combofix.txt.

Thanks for your persistence on helping me get rid of this infection!

=============================
21:11:46.0923 1364 TDSS rootkit removing tool 2.8.15.0 Oct 31 2012 21:47:35
21:11:47.0220 1364 ============================================================
21:11:47.0220 1364 Current date / time: 2012/11/11 21:11:47.0220
21:11:47.0220 1364 SystemInfo:
21:11:47.0220 1364
21:11:47.0220 1364 OS Version: 6.1.7601 ServicePack: 1.0
21:11:47.0220 1364 Product type: Workstation
21:11:47.0220 1364 ComputerName: MIKE-XPS17
21:11:47.0220 1364 UserName: Mike
21:11:47.0220 1364 Windows directory: C:\Windows
21:11:47.0220 1364 System windows directory: C:\Windows
21:11:47.0220 1364 Running under WOW64
21:11:47.0220 1364 Processor architecture: Intel x64
21:11:47.0220 1364 Number of processors: 8
21:11:47.0220 1364 Page size: 0x1000
21:11:47.0220 1364 Boot type: Normal boot
21:11:47.0220 1364 ============================================================
21:11:47.0267 1364 BG loaded
21:11:47.0501 1364 Drive \Device\Harddisk0\DR0 - Size: 0x3B9E656000 (238.47 Gb), SectorSize: 0x200, Cylinders: 0x799A, SectorsPerTrack: 0x3F, TracksPerCylinder: 0xFF, Type ‘K0’, Flags 0x00000040
21:11:47.0501 1364 Drive \Device\Harddisk1\DR1 - Size: 0x950B056000 (596.17 Gb), SectorSize: 0x200, Cylinders: 0x13001, SectorsPerTrack: 0x3F, TracksPerCylinder: 0xFF, Type ‘K0’, Flags 0x00000040
21:11:47.0516 1364 ============================================================
21:11:47.0516 1364 \Device\Harddisk0\DR0:
21:11:47.0516 1364 MBR partitions:
21:11:47.0516 1364 \Device\Harddisk0\DR0\Partition1: MBR, Type 0x7, StartLBA 0x139C5, BlocksNum 0x1D4C000
21:11:47.0516 1364 \Device\Harddisk0\DR0\Partition2: MBR, Type 0x7, StartLBA 0x1D5F9C5, BlocksNum 0x1BF930EB
21:11:47.0516 1364 \Device\Harddisk1\DR1:
21:11:47.0516 1364 MBR partitions:
21:11:47.0516 1364 \Device\Harddisk1\DR1\Partition1: MBR, Type 0x7, StartLBA 0x800, BlocksNum 0x4A857000
21:11:47.0516 1364 ============================================================
21:11:47.0516 1364 C: ↔ \Device\Harddisk0\DR0\Partition2
21:11:47.0516 1364 D: ↔ \Device\Harddisk1\DR1\Partition1
21:11:47.0516 1364 ============================================================
21:11:47.0516 1364 Initialize success
21:11:47.0516 1364 ============================================================

7

Any outstanding problems ?

8

So far, so good. Everything is running well and no sign of the notifications. Thanks so much!!

9

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:

Remove ComboFix
[*]Hold down the Windows key + R on your keyboard. This will display the Run dialogue box
[*]In the Run box, type in ComboFix /Uninstall
(Notice the space between the “x” and “/”)
then click OK

http://i1224.photobucket.com/albums/ee362/Essexboy3/Misc%20screen%20shots/CF_Uninstall-1.jpg

[]Follow the prompts on the screen
[]A message should appear confirming that ComboFix was uninstalled

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: