Win32:Malware-gen, Downloader-PKU, Etc...

Viruses and worms
1

Well, it looks like a rash of infections are hitting multiple people as of late, and I have just become one of them. I’ve tried everything, as usual. Even did 2 boot time scans in hopes of catching the virus before the system booted up. No avail. But thankfully I found this wonderful forum board. I hope you fine people can help.

As per the sticky, my logs are attached. Thanks everyone!

EsteBeatDown

P.S. Guess I should have clarified a little more. This is the same nasty virus that has been infecting many people as of late. It is picked up by AVAST over and over again and no amount of virus scans/deletion will get rid of it.

2

Hi I see you already have Combofix on the desktop

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 O2:64bit: - BHO: (no name) - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - No CLSID value found. 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) @Alternate Data Stream - 1102 bytes -> C:\Users\Esteban Ramos\AppData\Local\eWcXsz0Ly2DrXVq7u8yGVoXwScamw

:Files
ipconfig /flushdns /c
C:\Windows\assembly\GAC_32\Desktop.ini
C:\Windows\assembly\GAC_64\Desktop.ini
C:\Windows\Installer{2c5841a9-6e5b-d180-6d88-518bc47ed43a}
C:\Users\Esteban Ramos\AppData\Local{2c5841a9-6e5b-d180-6d88-518bc47ed43a}

: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:

  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

3

Wow. You all certainly work fast. Thank you so much for your assistance.

I use ComboFix in certain situations but only as a last resort and usually only with the guidance of experts such as yourself. I will run the fix now and update you with everything you have asked for. Again, thank you!

EsteBeatDown

4

A wise move, as if it goes wrong I know how to recover the situation

5

Okay, so the fix has been completed. My laptop has been running for about 30 minutes with no Virus Alerts from Avast. Computer is running good so far. I am going to run it for a while longer and see what happens. Here are the logs you asked for.

Thank you so much for your assistance. I will keep you posted on what happens in the next few hours. I’ll also run a virus scan and see if anything comes up.

6

Looks good let me know if there are any additional problems, an Avast scan will pick up the files that we have quarantined…

Let me know when you are happy and I will tidy up

7

Well it’s been over 2 hours and no sign of the virus anywhere. I ran a scan using Malwarebytes and it did find three infections (but I believe you said that was to be expected). Here is the log of that scan. I have not deleted the infections yet as I wanted to await orders from you before doing anything. You have the con captain.

8

Yep they are the quarantined files

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

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.

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

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 :wave:

9

Thank you again for all of your help. I have removed ComboFix, cleaned OTL, undated Java and deleted all but the most recent restore point. I’m also reviewing the information on protecting your computer. I am usually very good at avoiding viruses. In fact, this is the first virus I’ve ever allowed onto my computer. I’m still not even sure how it happened, as I have done nothing out of the ordinary in the past week.

In any case, everything looks good so far. I’ll keep you posted. Until then, thank you again!

10

My pleasure ;D