Win32:Trojan-gen removal

Viruses and worms
1

Hi, Newbie here, trying to rid my PC (running windows XP) of a Win32:Trojan-gen that keeps rearing its ugly head. Found it twice (2 different scans), along with worms & malware generators in the Avast Free boot time scan. Avast moves it to the virus chest, but as soon as I connect to the internet it comes back. If I leave my computer UNPLUGGED from the internet it works fine. I have run the Avast Anti root kit and found 5 hidden registry items. I have also run Malware bytes, which has found nothing, and Malware bytes Anti rootkit, which found nothing. Not sure where to go from here, other than leaving the computer off line.
Any help / recommendations would be greatly appreciated.

2

Please follow this guide and attach logs: http://forum.avast.com/index.php?topic=53253.0

When done malware removers will be notified.

Under the Answer is an option Attachments and other options, you can use that to attach the logs. :wink:

3

Here are the 2 logs - hope Im posting this in the right place.

4

Re-run Adwcleaner and after it has scanned select clean

Then attach the remaining OTL\AswMBR logs

5

Ok, here are the logs after ran Adwcleaner and selected clean.

6

I will need an AswMBR scan please, also can you attach a screenshot of the alert

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


:Commands
[CREATERESTOREPOINT]

:OTL
O3 - HKCU\..\Toolbar\ShellBrowser: (no name) - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - No CLSID value found.
O3 - HKCU\..\Toolbar\WebBrowser: (no name) - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - No CLSID value found.
O4 - HKLM..\RunOnce: [ (A0)] C:\WINDOWS\System32\cmd.exe (Microsoft Corporation)
O33 - MountPoints2\{588ceafa-f7b8-11dd-be94-0020ed3f0bb5}\Shell\AutoRun\command - "" = C:\WINDOWS\system32\RunDLL32.EXE Shell32.DLL,ShellExec_RunDLL RUNdLl32.ExE .\RECYCLER\S-5-3-42-2819952290-8240758988-879315005-3665\jwgkvsq.vmx,ahaezedrn
[2013/10/18 09:50:00 | 000,000,576 | ---- | M] () -- C:\WINDOWS\tasks\John.job
[2013/10/18 09:49:01 | 000,000,578 | ---- | M] () -- C:\WINDOWS\tasks\John1.job

: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
[*]Open OTL again and click the Quick Scan button. Post the log it produces in your next reply.

THEN

Download aswMBR.exe ( 4.5mb ) to your desktop.
Double click the aswMBR.exe to run it Click the “Scan” button to start scan

https://dl.dropboxusercontent.com/u/73555776/AswMBR%20scan.JPG

On completion of the scan click save log, save it to your desktop and post in your next reply

7

here are the logs / screen shots.

8

one more screen shot

9

Can you save the aswar file on your desktop and attach via attachments and other options, its not that readable on your photo.

10

here it is

11

The avast antirootkit has not been updated for a while as AswMbr has replaced it

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

12

Everything seems to be running fine. Thanks a bunch, I’d buy you a beer if I could. :wink:

13

In that case methinks I will send you on your merry way :slight_smile:

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

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

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



:Commands
[CLEARALLRESTOREPOINTS] 
[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.

: Keep Java Updated :

WARNING: Java is the #1 exploited program at this time. The Department of Homeland Security recommends that computer users disable Java
See this article and this article.
I would recommend that you completely uninstall Java unless you need it to run an important software.
In that instance I would recommend that you disable Java in your browsers until you need it for that software and then enable it. (See How to diasble Java in your web browser and How to unplug Java from the browser)

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

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:

14

Removed both programs. Everything is working as it should, I cant thank you enough! Cheers!

15

My pleasure :slight_smile: