Win32:malware-gen Win32:Downloader-PKU (Trj)

system · July 25, 2012, 9:44am

Hello,
I keep getting pop-ups about these two malwares being detected and moved to the recycle bin.
I’m attaching the logs as said in the guide.
Thanks

system · July 25, 2012, 9:46am

Malwarebytes Anti-Malware 1.62.0.1300
www.malwarebytes.org

Versione database: v2012.07.24.07

Windows 7 Service Pack 1 x64 NTFS
Internet Explorer 8.0.7601.17514
Giulia :: GIULIA-PC [amministratore]

24/07/2012 18:50:31
mbam-log-2012-07-24 (18-50-31).txt

Processi rilevati in memoria: 0
(non sono stati rilevati elementi nocivi)

Moduli di memoria rilevati: 0
(non sono stati rilevati elementi nocivi)

Chiavi di registro rilevate: 1
HKCU\SOFTWARE\Trymedia Systems (Adware.TryMedia) → Spostato in quarantena ed eliminato con successo.

Valori di registro rilevati: 0
(non sono stati rilevati elementi nocivi)

Voci rilevate nei dati di registro: 0
(non sono stati rilevati elementi nocivi)

Cartelle rilevate: 0
(non sono stati rilevati elementi nocivi)

File rilevati: 1
C:\Windows\Installer{145cf821-83fa-7cd4-4508-5eaff23fb6bd}\U\00000008.@ (Trojan.Dropper.BCMiner) → Spostato in quarantena ed eliminato con successo.

(fine)

system · July 25, 2012, 9:51am

Otl logs

system · July 25, 2012, 9:52am

Please do not make any further changes to your machine now that you have provided the logs.

Also, please let us know what browser you are using when you get these pop-ups. Do they happen in more than one browser?
Now that you ran MBAM, is your machine acting differently?
How is your machine acting otherwise?

system · July 25, 2012, 9:58am

I am going to refer you to our Certified Malware expert, named Essexboy. He will also review your logs and give you further instructions, however he comes on the forum late UK time. He will respond to you in this thread, so remember to check this thread daily.

IMPORTANT: If you are on a home network, disconnect the affected machine from the network. Do not share a USB/flash drive with this affected machine. Do not use this machine unless Essexboy or another malware removal specialist instructs you do to malware removal instructions; use a different machine to check email, sync your phone or other devices.

Let us know if you have any questions. Thank you.

system · July 25, 2012, 10:02am

At the moment i’m using chrome but the pop-ups appear also using firefox. The machine is not acting differently and even after i ran malwarebytes and spybot i keep getting pop-ups

system · July 25, 2012, 10:08am

I have all the logs I need at the moment. I have already notified the malware removal specialist (Essexboy) and he will give you further instructions. You have a rootkit along with other problems, so please do not use your machine.

But please answer the questions I asked in my previous post as this will help Essexboy.

system · July 25, 2012, 11:39am

I’m using chrome but the same pop-ups appear with firefox too
2.even after running mbam and spybot the problem persists
The machine is acting as usual. Nothing wrong apart from the pop-ups

essexboy · July 25, 2012, 2:04pm

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

:Files ipconfig /flushdns /c C:\Windows\assembly\GAC_32\Desktop.ini C:\Windows\assembly\GAC_64\Desktop.ini C:\Windows\Installer\{145cf821-83fa-7cd4-4508-5eaff23fb6bd}
:Commands
[purity]
[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:

Do not mouse-click Combofix’s window while it is running. That may cause it to stall.
Do not “re-run” Combofix. If you have a problem, reply back for further instructions.
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

system · July 25, 2012, 4:34pm

i’m sending you the log created by otl immediately after reboot, the one created after the quickscan and the one created by combofix.

thanks

essexboy · July 25, 2012, 6:44pm

On completion of this can you let me know what problems remain

Close any open browsers.
Close/disable all anti virus and anti malware programs so they do not interfere with the running of ComboFix.
Open notepad and copy/paste the text in the quotebox below into it:

FCopy: C:\Windows\winsxs\amd64_microsoft-windows-s..s-servicecontroller_31bf3856ad364e35_6.1.7600.16385_none_2b54b20ee6fa07b1\services.exe|c:\windows\system32\Services.exe

Save this as [b]CFScript.txt[/b], in the same location as ComboFix.exe

http://img.photobucket.com/albums/v666/sUBs/CFScriptB-4.gif

Refering to the picture above, drag CFScript into ComboFix.exeWhen finished, it shall produce a log for you at C:\ComboFix.txt which I will require in your next reply.

Notes:

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

system · July 25, 2012, 10:49pm

Here is the last log!

essexboy · July 26, 2012, 3:24pm

OK that did not work either… Meanwhile lets do something different

First download the MS fixit here to your desktop http://support.microsoft.com/kb/822798
Then run … we will need to run it a second time later

Then click the Globe under my Avatar
That will take you to my Skydrive
There is a services.exe file there
Download that and save it to your C drive i.e. C:\services.exe

Close any open browsers.
Close/disable all anti virus and anti malware programs so they do not interfere with the running of ComboFix.
Open notepad and copy/paste the text in the quotebox below into it:

FCopy:: C:\services.exe|c:\windows\system32\Services.exe

Save this as [b]CFScript.txt[/b], in the same location as ComboFix.exe

http://img.photobucket.com/albums/v666/sUBs/CFScriptB-4.gif

Refering to the picture above, drag CFScript into ComboFix.exeWhen finished, it shall produce a log for you at C:\ComboFix.txt which I will require in your next reply.

Notes:

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

THEN

Re-run the MSFixit

system · July 26, 2012, 6:34pm

The pop-ups stopped!

Should i run the procedure even if i’m not having any pop-up from avast?

essexboy · July 26, 2012, 6:53pm

Yes please as there are a few repairs that need doing

system · July 26, 2012, 7:58pm

Ok, here is the last log.

essexboy · July 26, 2012, 8:01pm

How is the system behaving now ?

system · July 26, 2012, 8:08pm

At the moment there are no pop-ups!

Is it fixed?

essexboy · July 26, 2012, 10:03pm

Subject to no further problems

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

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

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

[*]Go to control panel
[*]Select folder options (Appearance > Folder options in category view)
[*]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.

SPRING CLEAN

To manually create a new Restore Point

[*]Go to Control Panel and select System
[*]Select System
[*]On the left select System Protection and accept the warning if you get one
[*]Select System Protection Tab
[*]Select Create at the bottom
[*]Type in a name i.e. Clean
[*]Select Create

Now we can purge the infected ones

[*]GoStart > All programs > Accessories > system tools
[*]Right click Disc cleanup and select run as administrator
[*]Select Your main drive and accept the warning if you get one
[*]For a few moments the system will make some calculations
[*]Select the More Options tab
[*]In the System Restore and Shadow Backups select Clean up
[*]Select Delete on the pop up
[]Select OK
[]Select Delete

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

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

system · July 27, 2012, 8:52am

Thank you very much!!!

So, now i’ll do some cleaning!

I’ll let you know if i’m having any other problem.

Win32:malware-gen Win32:Downloader-PKU (Trj)

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