Is an Explorer.EXE a virus?And ... possible MBR infection?!

You need to double your RAM:
Общо физическа памет 512,00 МБ
Свободна физическа памет 172,45 МБ

Yes, you need to let explorer.exe run!! You already know that if you stop it, your system will crash.

What is this:
C:\!!!!!!!!!!!!!!

I strongly advise you to cleanup your Desktop. Remove everything but links to run programs. Do not download and save programs here and definitely do not use it for long term storage. You need to keep ComboFix.exe here for now as we need it, but we will be removing it when we are finished with your cleanup. A cluttered Desktop is malware's playground and it can also cause performance degradation especially when you start saving large files here like you are doing.

Please disable all anti-virus and anti-spyware programs while we do the following (re-enable when you are finished):

Run C:\MGtools\analyse.exe by double clicking on it (Note: if using Vista, don't double click, use right click and select Run As Administrator). This is really HijackThis (select Do a system scan only) and select the following lines but DO NOT CLICK FIX until you exit all browser sessions including the one you are reading in right now:

After clicking Fix, exit HJT.

Now Copy the bold text below to notepad. Save it as fixME.reg to your desktop. Be sure the "Save as" type is set to "all files" Once you have saved it double click it and allow it to merge with the registry.

Make sure that you tell me if you receive a success message about adding the above
to the registry. If you do not get a success message, it definitely did not work.

Now use windows explorer to find and delete:
C:\WINDOWS\cgminivw.ini

Now run the C:\MGtools\GetLogs.bat file by double clicking on it (Note: if using Vista, don't double click, use right click and select Run As Administrator).

Then attach the below logs:

* C:\MGlogs.zip

Make sure you tell me how things are working now!

 

Let's have you do this:

Please disable all anti-virus and anti-spyware programs while we do the following (re-enable when you are finished):

* Make sure that combofix.exe that you downloaded while doing the READ & RUN ME is on your Desktop but Do not run it!
If it is not on your Desktop, the below will not work.
* Also make sure you have shut down all protection software (antivirus, antispyware...etc) or they may get in the way of allowing ComboFix to run properly.
* If ComboFix tells you it needs to update to a new version, make sure you allow it to update.
* Open Notepad and copy/paste the text in the below code box into it (make sure you scroll all the way down in the code box to get all lines selected ):

Code:

KILLALL::

Folder::
C:\Documents and Settings\pc_\Desktop\Virus Removal Tool

Registry::
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupfolder\C:^Documents and Settings^pc_^Start Menu^Programs^Startup^is-17RIG.lnk]
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\MSConfig\startupfolder\C:^Documents and Settings^pc_^Start Menu^Programs^Startup^is-EPQHP.lnk]

* Save the above as CFscript.txt and make sure you save it to the same location (should be on your Desktop) as ComboFix.exe
* At this point, you MUST EXIT ALL BROWSERS NOW before continuing!
* You should have both the ComboFix.exe and CFScript.txt icons on your Desktop.
If it asks you to overide the prvevious file with the same name, click YES.
* Now use your mouse to drag CFscript.txt on top of ComboFix.exe
http://img.photobucket.com/albums/v666/sUBs/CFScriptB-4.gif
* Follow the prompts.
* When it finishes, a log will be produced named c:\combofix.txt
* I will ask for this log below

Note:

Do not mouseclick combofix's window while it is running. That may cause it to stall.

Yes you do have a Master Boot Record (MBR) infection that needs to be removed which we will get to below. You will need to boot to the Recovery Console that you have installed (perhaps when you installed ComboFix) to remove this infection.

Now boot to the Recovery Console and run the fixmbr to clear a Master Boot Record infection that you have.

You can read the below to help you do this:

http://support.microsoft.com/kb/307654


Then boot back into normal mode.

Now re-run ComboFix and also run the C:\MGtools\GetLogs.bat file by double clicking on it (Note: if using Vista, don't double click, use right click and select Run As Administrator).

Then attach the below logs:

* C:\ComboFix.txt
* C:\MGlogs.zip

 

I can only check the rootkit problem if you would at least get me a new MGLogs.zip.

You can do this for the registry fix:

Please disable all anti-virus and anti-spyware programs while we do the following (re-enable when you are finished):

Now Copy the bold text below to notepad. Save it as fixME.reg to your desktop. Be sure the "Save as" type is set to "all files" Once you have saved it double click it and allow it to merge with the registry.

Make sure that you tell me if you receive a success message about adding the above
to the registry. If you do not get a success message, it definitely did not work.

It is very possible that Combo is wrong. But we will recheck.

As to your link to the host files, what are you asking? They are giving examples for you and if you want to reset your host file you can use this:
Download HostsXpert and then follow the below steps.

• Unzip HostsXpert.zip
• It will create a folder named HostsXpert in whatever folder you extract it to.
• Run HostsXpert.exe by double clicking on it.
• Click the Make Writeable? button. (if you only see a Make Read-Only selection, it is already writeable so skip this button).
• Click Restore Microsoft's Hosts File and then click OK.
• Click the X to exit the program

 

Your logs are clean. However, you need to clean out your temp files as they are a good place for malware to hide.

These should be deleted:

Please disable all anti-virus and anti-spyware programs while we do the following (re-enable when you are finished):

* Make sure that combofix.exe that you downloaded while doing the READ & RUN ME is on your Desktop but Do not run it!
If it is not on your Desktop, the below will not work.
* Also make sure you have shut down all protection software (antivirus, antispyware...etc) or they may get in the way of allowing ComboFix to run properly.
* If ComboFix tells you it needs to update to a new version, make sure you allow it to update.
* Open Notepad and copy/paste the text in the below code box into it (make sure you scroll all the way down in the code box to get all lines selected ):

Code:

KILLALL::

File::
C:\WINDOWS\temp\236636f1-6d5c-4647-8978-7a34f93c6bea.tmp
C:\Documents and Settings\pc_\Local Settings\temp\mus19.tmp
C:\Documents and Settings\pc_\Local Settings\temp\20b6e99a265a4dc3aa92b5f16884b13f.tmp
C:\Documents and Settings\pc_\Local Settings\temp\213c90e16e6040268f28e31bb2f5f341.tmp
C:\Documents and Settings\pc_\Local Settings\temp\5ba4151a8c714739b5fcb416359a6fc2.tmp
C:\Documents and Settings\pc_\Local Settings\temp\TempREA.cmd
C:\Documents and Settings\pc_\Local Settings\temp\jkos-pc_

* Save the above as CFscript.txt and make sure you save it to the same location (should be on your Desktop) as ComboFix.exe
* At this point, you MUST EXIT ALL BROWSERS NOW before continuing!
* You should have both the ComboFix.exe and CFScript.txt icons on your Desktop.
If it asks you to overide the prvevious file with the same name, click YES.
* Now use your mouse to drag CFscript.txt on top of ComboFix.exe
http://img.photobucket.com/albums/v666/sUBs/CFScriptB-4.gif
* Follow the prompts.
* When it finishes, a log will be produced named c:\combofix.txt
* I will ask for this log below

Note:

Do not mouseclick combofix's window while it is running. That may cause it to stall.

Attach the combo log and we should be ready to give you the final cleanup.

 

There was no evidence of a rootkit still existing in the MBR. Combo is throwing a false positive. PEV.exe is part of Combo, so if one of your AS or your AV program deleted it, that would be the reason for the error message.

I think you can go ahead an image your HHD.

If you are not having any other malware problems, it is time to do our final steps:

1. We recommend you keep SUPERAntiSpyware and Malwarebytes Anti-Malware for scanning/removal of malware. Unless you purchase them, they provide no real-time protection. They are useful as backup scanners.They do not use any significant amount of resources ( except a little disk space ) until you run a scan.
2. If we had you use ComboFix, uninstall ComboFix (This uninstall will only work as written if you installed ComboFix on your Desktop like we requested.)
   
   • Click START then RUN and enter the below into the run box and then click OK. Note the quotes are required
   • "%userprofile%\Desktop\combofix" /uninstall
     
     • Notes: The space between the combofix" and the /u, it must be there.
     • This will uninstall ComboFix and also reset hidden files and folders settings back to Windows defaults.
3. Any other miscellaneous tools we may have had you install or download can be uninstalled and deleted.
4. If we had you download any registry patches like fixme.reg or fixWLK.reg (or any others), you can delete these files now.
5. If running Vista, it is time to make sure you have reenabled UAC by double clicking on the C:\MGtools\enableUAC.reg file and allowing it to be added to the registry.
6. Go to add/remove programs and uninstall HijackThis.
7. Goto the C:\MGtools folder and find the MGclean.bat file. Double click on this file to run this cleanup program that will remove files and folders related to MGtools and some other items from our cleaning procedures.
8. If you are running Vista, Windows XP or Windows ME, do the below:
   
   • Refer to the cleaning procedures in step 3 the READ ME for your Window version and see the instructions to Disable System Restore which will flush your Restore Points.
   • Then reboot and Enable System Restore ato create a new clean Restore Point.
9. After doing the above, you should work thru the below link:
   
   • How to Protect yourself from malware!

 

I really can not explain why things have changed form lower to upper case. It could be an update for all I know. But you dont need to be concerned. Your system is clean.