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Remove Antivirii 2011 (Uninstall Guide)

By on December 11, 2011 @ 09:22 PM | Read 12,074 times.
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Antivirii 2011 is a new variant of the Antivirus Clean 2011 rogue family. This rogue is promoted through online advertisements that pretend to be online anti-malware scanners. When the advertisement is finished, it will automatically state that your computer is infected and then prompt you to download and install the Antivirii 2011 program onto your computer. Once the program is installed, it will be configured to start automatically when you login into Windows. Once running, it will pretend to scan your computer for infections and when finished will falsely state that your computer is infected with a variety of malware. If you attempt to use the program to remove any of these infections, though, it will state that before you can remove anything you first need to purchase the program. It goes without saying that you should ignore any of these scan results and not purchase the program.

 

Antivirii 2011 Screen shot
Antivirii 2011 Screen shot
For more screen shots of this infection click on the image above.
There are a total of 3 images you can view.

 

As a protection method, Antivirii 2011 will also add a Windows Registry setting so that you are not able to launch the Windows Task Manager. The rogue will also display fake security alerts on the infected computer. The text of these alerts are:

Your computer is in danger!
Antivirii 2011 has detected some serious threats to your computer!
These viruses need to be eliminated immedeately <sic>! Please click this icon to remove threats.

Your system is infected!
Your computer is compromised by hackers, adware, malware and worms!
Antivirii 2011 can remove this infection. Please click this icon to remove threats.

Just like the fake scan results, these security alerts are designed to scare you into thinking your computer is infected and should be ignored.

Without a doubt, Antivirii 2011 is a scam that was designed to scare you into thinking your computer has a security problem so that you will then purchase the program. Therefore, do not purchase Antivirii 2011 for any reason, and if you already have, please contact your credit card company and state that the program is a computer infection and a scam and that you would like to dispute the charge. To remove this infection and related malware, please follow the steps in the guide below.

 

Threat Classification:

 

Advanced information:

View Antivirii 2011 files.
View Antivirii 2011 Registry Information.

 

Tools Needed for this fix:

 

Symptoms that may be in a HijackThis Log:

O4 - HKLM\..\Run: [Security] %WinDir%\<random>.exe

 

Guide Updates:

12/11/11 - Initial guide creation.

 


Automated Removal Instructions for Antivirii 2011 using Malwarebytes Anti-Malware:

 

  1. Print out these instructions as we may need to close every window that is open later in the fix.

  2. Reboot your computer into Safe Mode with Networking. To do this, turn your computer off and then back on and immediately when you see anything on the screen, start tapping the F8 key on your keyboard. Eventually you will be brought to a menu similar to the one below:


    MalwareBytes Anti-Malware Screen

    Using the arrow keys on your keyboard, select Safe Mode with Networking and press Enter on your keyboard. If you are having trouble entering safe mode, then please use the following tutorial: How to start Windows in Safe Mode

    Windows will now boot into safe mode with networking and prompt you to login as a user. Please login as the same user you were previously logged in with in the normal Windows mode. Then proceed with the rest of the steps.

  3. It is possible that the infection you are trying to remove will not allow you to download files on the infected computer. If this is the case, then you will need to download the files requested in this guide on another computer and then transfer them to the infected computer. You can transfer the files via a CD/DVD, external drive, or USB flash drive.

  4. Before we can do anything we must first end the processes that belong to Antivirii 2011 so that it does not interfere with the cleaning procedure. To do this, please download RKill to your desktop from the following link.

    RKill Download Link - (Download page will open in a new tab or browser window.)

    When at the download page, click on the Download Now button labeled iExplore.exe download link. When you are prompted where to save it, please save it on your desktop.

  5. Once it is downloaded, double-click on the iExplore.exe icon in order to automatically attempt to stop any processes associated with Antivirii 2011 and other Rogue programs. Please be patient while the program looks for various malware programs and ends them. When it has finished, the black window will automatically close and you can continue with the next step. If you get a message that RKill is an infection, do not be concerned. This message is just a fake warning given by Antivirii 2011 when it terminates programs that may potentially remove it. If you run into these infections warnings that close RKill, a trick is to leave the warning on the screen and then run RKill again. By not closing the warning, this typically will allow you to bypass the malware trying to protect itself so that RKill can terminate Antivirii 2011 . So, please try running RKill until the malware is no longer running. You will then be able to proceed with the rest of the guide. Do not reboot your computer after running RKill as the malware programs will start again.

    If you continue having problems running RKill, you can download the other renamed versions of RKill from the RKill download page. Both of these files are renamed copies of RKill, which you can try instead. Please note that the download page will open in a new browser window or tab.

  6. Now you should now download Malwarebytes Anti-Malware, or MBAM, from the following location and save it to your desktop:

    Malwarebytes Anti-Malware Download Link (Download page will open in a new window)

  7. Once downloaded, close all programs and Windows on your computer, including this one.

  8. Double-click on the icon on your desktop named mbam-setup.exe. This will start the installation of MBAM onto your computer.

  9. When the installation begins, keep following the prompts in order to continue with the installation process. Do not make any changes to default settings and when the program has finished installing, make sure you leave Launch Malwarebytes Anti-Malware checked. Then click on the Finish button. If MalwareBytes prompts you to reboot, please do not do so.

  10. MBAM will now start and you will be at the main screen as shown below.


    Malwarebytes Anti-Malware

    Please click on the Scan Now button to start the scan.

  11. If there is an update available for Malwarebytes, the program will prompt you as shown in the image below.



    Update Prompt


    Please click on the Update Now button to update the programs definitions before you perform a scan. When the update has finished, Malwarebytes will automatically start to scan your computer.

  12. MBAM will now start scanning your computer for malware. This process can take quite a while, so we suggest you go and do something else and periodically check on the status of the scan. When MBAM is finished scanning it will display a screen that displays any malware that it has detected. Please note that the infections found may be different than what is shown in the image below due to the guide being updated for newer versions of MBAM.


    MalwareBytes Scan Results


    You should now click on the Apply Actions button to remove all the listed malware. MBAM will now delete all of the files and registry keys and add them to the programs quarantine. When removing the files, MBAM may require a reboot in order to remove some of them. If it displays a message stating that it needs to reboot, please allow it to do so. Once your computer has rebooted, and you are logged in, please continue with the rest of the steps.

  13. You can now exit the MBAM program. If Malwarebytes did not prompt you to reboot your computer, please do so that you are back in normal mode.

  14. As many rogues and other malware are installed through vulnerabilities found in out-dated and insecure programs, it is strongly suggested that you use Secunia PSI to scan for vulnerable programs on your computer. A tutorial on how to use Secunia PSI to scan for vulnerable programs can be found here:

    How to detect vulnerable and out-dated programs using Secunia Personal Software Inspector

 

Your computer should now be free of the Antivirii 2011 program. If your current anti-virus solution let this infection through, you may want to consider purchasing the PRO version of Malwarebytes Anti-Malware to protect against these types of threats in the future.

If you are still having problems with your computer after completing these instructions, then please follow the steps outlined in the topic linked below:

Preparation Guide For Use Before Using Malware Removal Tools and Requesting Help

 


 

Associated Antivirii 2011 Files:

%WinDir%\antivirii.exe
%WinDir%\<random>.exe

File Location Notes:

%Windir% refers to the Windows installation folder. By default, this is C:\Windows for Windows 95/98/ME/XP/Vista/7/8 or C:\Winnt for Windows NT/2000.

 

Associated Antivirii 2011 Windows Registry Information:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "Security"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskmgr.exe "Debugger"

 


 

This is a self-help guide. Use at your own risk.

BleepingComputer.com can not be held responsible for problems that may occur by using this information. If you would like help with any of these fixes, you can ask for malware removal assistance in our Virus, Trojan, Spyware, and Malware Removal Logs forum.

If you have any questions about this self-help guide then please post those questions in our Am I infected? What do I do? and someone will help you.


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