Trouble with 3, apparently difficult to remove, virus'

Viruses and worms
1

Hello,

My avast keeps blocking harmful malware attempts of late and asks me to do a boot-time scan, upon doing that recently I have found 3 different types of virus’ all of which avast deletes during the scan but still seem to persist. The virus’s are:

Java: cve-2012-5076-ab [expl]
Win64: sirefef-a [trj]
Win32: sirefef-ao [rtk]

Ive done a good deal of searching the web for solutions for these problems but most of which have people asking for logs of a scan before acting on fixing it so I was afraid to do anything without asking first.

I also couldn’t seem to find in the avast program where the logs might be, otherwise I would have posted them along with this thread.

Any help on this subject would be greatly appreciated. Thank you for your time.

2

Please attach your logs. (AdwCleaner, MBAM, OTL and aswMBR…!!)
Instructions: http://forum.avast.com/index.php?topic=53253.0

3

Ok the AdwCleaner, MBAM, OTL and aswMBR logs are attached, I still have quiet a few other logs that were generated from the other programs, let me know if you need those as well.

4

Nope that is sufficient to work from

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
DRV - File not found [Kernel | On_Demand | Stopped] -- system32\DRIVERS\SymIM.sys -- (SymIMMP)
DRV - File not found [Kernel | On_Demand | Stopped] -- system32\DRIVERS\SymIM.sys -- (SymIM)
FF - HKEY_CURRENT_USER\software\mozilla\Firefox\Extensions\\{33232784-CFE8-11E1-8270-B8AC6F996F26}: C:\Users\Brian\AppData\Local\{33232784-CFE8-11E1-8270-B8AC6F996F26}\ [2012/07/17 03:19:54 | 000,000,000 | ---D | M]
O2 - BHO: (no name) - {602ADB0E-4AFF-4217-8AA1-95DAC4DFA408} - No CLSID value found.
O3 - HKLM\..\Toolbar: (no name) - {7FEBEFE3-6B19-4349-98D2-FFB09D4B49CA} - No CLSID value found.

:Files
C:\Windows\Installer\{e7e42b40-471e-9ee5-121f-e349cd7a1ef5}
C:\Users\Brian\AppData\Local\{e7e42b40-471e-9ee5-121f-e349cd7a1ef5}

: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.

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

5

Check and Check, Computer is running fine however it was running fine before other then the avast warnings. Its difficult to tell if the problem is fixed because the warnings seemed to be very random, sometime it would do it a few times a day sometimes a week would go by without any warnings.

Logs are attached

6

Give it a few days and if you are happy let me know and I will remove the tools

7

Hi, sorry for not responding earlier I’ve been away for the passed few weeks. From what I can tell the problems been fixed. Is there anything else i need to do?

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:

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.

: 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:

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: