ComboFix

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K@rdinaller_Lordu

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Feb 9, 2010, 3:34:35 AM2/9/10
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http://rapidshare.com/files/348084282/ComboFix.exe

Size: 3851 KB

Bir malware temizleme yazılımı olan Combofix flashdisk ve nadir de olsa dikkatsiz yazılan CD'lerden bulaşan amvo.exe adlı zararlı autorun dosyasını başarılı bir şekilde bilgisayarınızdan siliyor.

Amvo.exe Nedir?
Popüler antivirüs yazılımlarının neredeyse hiçbirinin tam çözüm sunmadığı bu zararlı uygulama kendini system32 klasörünün altına atıyor. En tehlikeli özelliği ise sisteminize bulaştıktan sonra kendini kopyalaması ve gizlemesi.

Amvo.exe'nin Zararları Nedir?
Yerleştiği sistemin performansını fazlasıyla düşüren bu zararlı uygulama aynı zamanda "Gizli" durumda olan klasörlere erişilmesini engelliyor, yazılım bulaştıktan sonra "Klasör Seçenekleri > Görünüm" bölümünden tüm klasörleri görünür yapsanızda sonuç değişmiyor.

Amvo.exe'den Nasıl Kurtulurum?
ComboFix'i bilgisayarınıza indirin ve masaüstüne aldıktan sonra çalıştırın (Vista kullnıcıları programın üzerine sağ tuş ile tıkladıktan sonra "Yönetici Olarak Çalıştır" seçeneğini kullanmalıdır). Eğer bilgisayarınız "Güvenli Kip"te değilse aktif olan tüm güvenlik yazılımlarını ve pencereleri kapatın. Karşınıza çıkan yönergelere "Evet/Yes" diyerek ilerleyin, hızlı bir taramadan sonra ComboFix gerekeni yapacak ve sonuçları C:'nin içerisine attığı log dosyasında size bildirecektir.

Tavsiye: Autorun şeklindeki bu tip zararlı yazılımlardan kısmen de olsa korunmak için bilgisayarınıza taktığınız flashdisk ve CD'leri Otomatik Başlangıç Seçeneğinden değil "Bilgisayarım"dan ilgili sürücünün üzerine sağ tuş ile tıklayıp "Araştır sekmesinden açmanızda fayda var.
  Önemli Notlar: • Deneyimsiz kullanıcıların programı kullanmasını tavsiye etmemekteyiz.
• Bazı antivirüs programları virüs uyarısı verebilmektedir fakat program zararlı içerik taşımamaktadır fakat yine de kullanması riskli bir programdır.

Using ComboFix

If you need help with malware removal, then please create a topic at one of the forums listed later in the guide and ask for help. Please note that each forum has different policies, so please be sure to read any pinned topics and rules for the particular forum about how you should go about receiving help. If a ComboFix log has been requested by a helper then please create one by following the instructions below.

The first thing you should do is print out this guide, as we will close all the open windows and programs, including your web browser, before starting the ComboFix program.

Next you should download ComboFix from one of the following URLs:

To download ComboFix, simply left-click on one of the links above and you will see a prompt similar to the figure below.

 

Download ComboFix Screenshot
Download ComboFix Prompt

 

Click on the Save button, and when it asks you where to save it, make sure you save it directly to your Windows Desktop. An image showing this is below.

 

Downloading ComboFix to the Desktop
Downloading ComboFix to the Desktop

 

When you have the Save as screen configured to save ComboFix.exe to the Desktop, click on the Save button. ComboFix will now start downloading to your computer. If you are on a dialup, this may take a few minutes. When ComboFix has finished downloading you will now see an icon on your desktop similar to the one below.

 

ComboFix Icon
ComboFix Icon

We are almost ready to start ComboFix, but before we do so, we need to take some preventative measures so that there are no conflicts with other programs when running ComboFix. At this point you should do the following:

  • Close all open Windows including this one.
  • Close or disable all running Antivirus, Antispyware, and Firewall programs as they may interfere with the proper running of ComboFix. Instructions on disabling these type of programs can be found in this topic.

Once these two steps have been completed, double-click on the ComboFix icon found on your desktop. Please note, that once you start ComboFix you should not click anywhere on the ComboFix window as it can cause the program to stall. In fact, when ComboFix is running, do not touch your computer at all. The scan could take a while, so please be patient.

Once you double-click on the icon, you may see a screen similar to the one below.

 

Windows Open File Security Warning
Windows Open File Security Warning

 

Windows is issuing this prompt because ComboFix does not have a digital signature. This is perfectly normal and safe and you can click on the Run button to continue. If you are using Windows Vista, and receive UAC prompt asking if you would like to continue running the program, you should press the Continue button.

You will now see the first ComboFix screen as shown below.

 

ComboFix is Preparing to Run
ComboFix is Preparing to Run

 

ComboFix is now preparing to run and when it has finished you will see a screen showing the authorized locations to download Combofix. On this screen please press the OK button and you will be shown the Disclaimer screen shown below.

 

ComboFix Disclaimer
ComboFix Disclaimer

 

If you do not agree to the disclaimer, then click on the No button to exit the program. Otherwise, to continue you should press the Yes button to continue. If you decided to continue, then ComboFix will create a System Restore point so that if any problems occur while using the program you can restore back to your previous configuration. When ComboFix has finished creating the restore point, it will then backup your Windows Registry as shown in the image below.

 

ComboFix is backing up the Windows Registry
ComboFix is backing up the Windows Registry

 

Once the Windows Registry has finished being backed up, ComboFix will attempt to detect if you have the Windows Recovery Console installed. If you already have it installed, you can skip to this section and continue reading. Otherwise you will see the following message as shown below:

 

ComboFix Recovery Console
ComboFix Recovery Console

 

At the above message box, please click on the Yes button in order for ComboFix to continue. Please follow the steps and instructions given by ComboFix in order to finish the installation of the Recovery Console. Once it has finished installing, you will be presented with the screen shown below.

 

ComboFix Recovery Console Finished
ComboFix Recovery Console Finished

 

You should now press the Yes button to continue. If at any time during the Recovery Console installation you receive a message stating that it failed to install, please allow ComboFix to continue with the scan of your computer. When it is done, and a log has been created, you can then perform the manual install of the Recovery Console using the steps found in the Manually installing the Windows Recovery Console section.

ComboFix will now disconnect your computer from the Internet, so do not be surprised or concerned if you receive any warnings stating that you are no longer on the Internet. When ComboFix has finished it will automatically restore your Internet connection.

ComboFix will now start scanning your computer for known infections. This procedure can take some time, so please be patient.

 

ComboFix is scanning the computer for infections
ComboFix is scanning the computer for infections

 

While the program is scanning your computer, it will change your clock format, so do not be concerned when you see this happen. When ComboFix is finished it will restore your clock settings to their previous settings. You will also see the text in the ComboFix window being updated as it goes through the various stages of its scan. An example of this can be seen below.

 

Stages of the ComboFix AutoScan
Stages of the ComboFix AutoScan

 

At the time of this writing there are a total of 50 stages as shown in the image below, so please be patient. The amount of stages will go up as time goes on, so if the amount of stages is different when you run it, please do not be concerned.

 

34th Stage of the ComboFix AutoScan
34th Stage of the ComboFix AutoScan

 

When ComboFix has finished running, you will see a screen stating that it is preparing the log report as shown below.

 

ComboFix is preparing the log report
ComboFix is preparing the log report

 

This can take a while, so please be patient. If you see your Windows desktop disappear, do not worry. This is normal and ComboFix will restore your desktop before it is finished. Eventually you will see a new screen that states the program is almost finished and telling you the programs log file, or report, will be located at C:\ComboFix.txt. This can be seen in the image below.

 

ComboFix is almost done!
ComboFix is almost done!

 

When ComboFix has finished, it will automatically close the program and change your clock back to its original format. It will then display the log file automatically for you as shown below.

 

ComboFix Log File
ComboFix Log File

 

You should now post this log as a reply to the topic where you were asked to run combofix. Your helper will now analyze this log and let you know what they would like you to do next. If you having problems connecting to the Internet after running Combofix, then please read the Manually restoring the Internet connection section.

It is possible that ComboFix, even on its first run, may have fixed the problems you are having. We strongly suggest that you still post your log into the topic that you are receiving help as you most likely will have infections left over that your helper will need to analyze further.

Forums to receive help analyzing ComboFix logs

Below is a list of forums where there are authorized helpers who understand and can analyze ComboFix logs. We have categorized the forums by language as ComboFix is used internationally.

 

English Forums
   
Bleeping Computer Tech Support Forum
SpywareInfo GeeksToGo
Dell Community SpywareWarrior
DSLReports SpyKiller
WhatTheTech Safer-Networking
D-A-L Tech Support Guy
PCPitstop SpyWare BeWare
Security Forums CyberTechHelp
MalwareRemoval ThatComputerGuy
Newbie.org Webuser
Gladiator Security
Atribune
BFC Computer Help MajorGeeks
SpywareHammer Aumha
TeMerc Internet Countermeasures Security Cadets
Cexx  

 

Dutch Forums
German Forums
   
Blue Medicine HijackThis.de
AntiSpywareOffensief PCMasters
HijackThis.nl Trojaner-Board.de
   
Spanish Forums
Portuguese Forums
   
InfoSpyware Forum Clube do Hardware
   
French Forums
Danish
   
Malekal Spywarefri
Zebulon  
   
Finnish Forum
 
   
Virustorjunta  



Manually installing the Windows Recovery Console

In the event that the automatic install of Recovery Console was not possible, you should follow the steps listed here in order to manually install it. The Windows recovery console is a tool that will allow you to boot up into a special recovery mode that allows us to help you in the case that your computer has a problem after an attempted removal of malware. If you use Windows XP and have a Windows CD, then you can follow the instructions found in the tutorial listed below.

How to install and use the Windows XP Recovery Console

Windows Vista users can use their Windows DVD to boot up into the Vista Recovery Environment.

If you use Windows XP and do not have the Windows CD, ComboFix includes a method of installing the Windows Recovery console by downloading a file from Microsoft. To install the Windows Recovery Console when you do not have the Windows XP CD, please follow these instructions:

  1. Click on the following link to go to Microsoft's Web site:

    http://support.microsoft.com/kb/310994

  2. At that page, scroll down and click on the appropriate download for your version of Windows XP (Home or Professional) and the service pack level that you have installed. When you click on the link to download the file, make sure you save it directly to your desktop. If you are using Windows XP Service Pack 3 (SP3), then select the Service Pack 2 download. If you are using Windows XP Media Center, then you should select the Windows XP Pro Service Pack 2 download. If you are unsure what version of Windows you have and what Service Pack is installed, you can follow these instructions to gain that information.

    1. Click on the Start button.
    2. Click on the Run menu option.
    3. In the Open: field type the following: sysdm.cpl and then click on the OK button.
    4. A screen will appear showing information about your installation. Under the System: category you should see your Windows version and the installed Service Pack. When you are done determining this information continue with Step 2.

  3. Once the Microsoft file has finished downloading, you should drag it on top of the ComboFix icon and let your mouse button go. This is shown in the following image.






  4. ComboFix will now automatically install the Windows Recovery Console onto your computer, which will show up as a new option when booting up your computer. Do not select the Windows Recovery Console option when you start your computer unless requested to by a helper.

Once the Windows Recovery Console has finished installed, ComboFix will open a prompt stating that it was installed and asking if you would like to proceed with scanning your computer. If you wish to continue, then press the Yes button and continue reading the tutorial from here.

 

Manually restoring the Internet connection

If, by some chance, you no longer have access to your Internet connection after running ComboFix then the first thing to try is to reboot your computer. This step alone should fix the vast majority of issues with no Internet connection after running ComboFix. If you still do not have an Internet connection after rebooting then please perform the following steps:

  1. Click on the Start button.
  2. Click on the Settings menu option.
  3. Click on the Control Panel option.
  4. When the Control Panel opens, double-click on the Network Connections icon. If your Control Panel is set to Category View, then double-click on Network and Internet Connections and then click on Network Connections at the bottom.
  5. You will now see a list of available network connections. Locate the connection for your Wireless or Lan adapter and right-click on it.
  6. You will now see a menu similar to the image below. Simply click on the Repair menu option.


    Repair Internet Connection
    Repair Internet Connection


  7. Let the repair process perform its tasks and when it has finished, your Internet connection should be working again.

Alternatively, if your network icon also appears on the Windows taskbar, then you can repair it by right-clicking on the icon and selecting Repair as shown below.

Repair Internet connection via Tray Icon
Repair Internet connection via Tray Icon


If you still do not have an Internet connection after performing these two tasks, then you may want to ask for help in our forums.



--
\(¯`·.\(¯`·. K@rdinaller Lordu.·´¯\).·´¯\)
Fânîyim, fânî olanı istemem;
âcizim, âciz olanı istemem.
Ruhumu Rahmân'a teslim eyledim, gayrı istemem. İsterim, fakat bir yâr-ı bâkî isterim.
Zerreyim, fakat bir şems-i sermed isterim.
Hiç ender hiçim, fakat bu mevcûdâtı umumen isterim...


--
\(¯`·.\(¯`·. K@rdinaller Lordu.·´¯\).·´¯\)
Fânîyim, fânî olanı istemem;
âcizim, âciz olanı istemem.
Ruhumu Rahmân'a teslim eyledim, gayrı istemem. İsterim, fakat bir yâr-ı bâkî isterim.
Zerreyim, fakat bir şems-i sermed isterim.
Hiç ender hiçim, fakat bu mevcûdâtı umumen isterim...
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