Obrona Cleaner Removal Guide

  • March 11, 2015

Obrona Cleaner states that it is a system optimziation program that scans your computer for improper configuration settings and performance issues. In reality, though, this program is nothing more than scareware that states harmless configuration settings are problems in order to scare you into purchasing it. When first run, Obrona Cleaner will issue a loud siren noise and then start supposedly scanning your computer for system issues. While running for the first time it will state that it will not show you the report until you submit an email. It is unknown at this time what they use the email address for so we strongly suggest that you do not enter a legitimate one into the program. Instead click on the X in the email request window and you will be shown a report that states numerous harmless, if not beneficial, configuration settings are harmful to your computer. It then prompts you to purchase the program before you can buy it. It goes without saying that you should not believe anything this program displays and you should definitely not purchase the program.

  • Obrona Cleaner Screen Shot
  • Email Prompt
  • Scanning
  • Scan Results

Obrona Cleaner also creates tasks in the Windows Task Scheduler in order to bypass Windows UAC, or User Account Control, prompts. When installed the program will create a task called ObronaCleanerUacSkip and Startup Time Check that are used to launch the program without displaying UAC prompts. It is unknown why they do this, but for a program to attempt to bypass Windows security notifications is a cause of concern.

Without a doubt, Obrona Cleaner is not a program that you want on your computer as it was designed to scare you into purchasing it. Please use this guide to remove all remnants of this program and any other associated adware.

Self Help Guide

This guide contains advanced information, but has been written in such a way so that anyone can follow it. Please ensure your data is backed up before proceeding.

If you are uncomfortable making changes to your computer or following these steps, do not worry! Instead you can get free one-on-one help by asking in the forums.
  1. This removal process may appear overwhelming due to the amount of the steps and the various programs used. Please do not be concerned as it is only written this way to give you clear and easy instructions so that anyone can use this guide. Before using this guide, you should print out these instructions and close any open programs and files as your web browser will need to be closed and your computer rebooted later in this fix.
  2. As Obrona Cleaner sometimes has a usable Uninstall entry that can be used to remove the program, we want to try that first. To do this, click on the Start button and then select Control Panel.
  3. When in the Control Panel, double-click on one of the options below depending on your version of Windows
    1. For Windows XP double-click on the Add or Remove Programs icon.
    2. For Windows Vista, Windows 7, Windows 8, and Windows 10 double-click on the Uninstall Program option.
  4. When the Add or Remove Programs or the Uninstall Program screen is displayed, please scroll through the list of programs and double-click on each of the entries listed in bold below to uninstall them.
    OBRONA Cleaner
    When you double-click on each of the above entries to uninstall them, please follow the default prompts and allow it to remove all files and all configuration information related to this program. If any of the programs ask you to reboot your computer, do not allow it to reboot until you have uninstalled all of the programs listed above.
  5. When you are done, you can close the Control Panel screens.

  6. Now we want to terminate any other adware or malware processes that may be running by downloading and running Rkill. Rkill will search your computer for active malware processes and attempt to terminate them so that they wont interfere with the removal process. 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.
  7. Once it is downloaded, double-click on the iExplore.exe icon in order to automatically attempt to stop any processes associated with Obrona Cleaner 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 Obrona Cleaner 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 Obrona Cleaner . 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. If you continue having problems running RKill, you can download the other renamed versions of RKill from the rkill download page. All of the 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.

    Do not reboot your computer after running RKill as the malware programs will start again.

  8. When Rkill has finished, you now need to download AdwCleaner and save it to your desktop. AdwCleaner will scan your computer for adware programs that may have been installed on your computer without your knowledge. You can download AdwCleaner from the following URL:

  9. When AdwCleaner has finished downloading, please double-click on the AdwCleaner.exe icon that now appears on your desktop. Once you double-click on the icon the AdwCleaner program will open and you will be presented with its start screen as shown below. If Windows prompts you as to whether or not you wish to run AdwCleaner, please allow it to run.

    AdwCleaner Start Screen
  10. Now click on the Scan button in AdwCleaner. The program will now start to search for known adware programs that may be installed on your computer. When it has finished it will display all of the items it has found in Results section of the screen above. Please look through the results and try to determine if the programs that are listed contain ones that you do not want installed. If you find programs that you need to keep, then uncheck the entries associated with them.

    For most people, the contents of the Results section may appear confusing or as gibberish. Unless you see a program name that you know should not be removed, please continue with the next step.
  11. To remove the adware programs that were detected in the previous step, please click on the Clean button on the AdwCleaner screen. AdwCleaner will now prompt you to save any open files or data as the program will need to reboot the computer. Please do so and then click on the OK button. AdwCleaner will now delete all detected adware from your computer. When it is done it will display an alert that explains what PUPs (Potentially Unwanted Programs) and Adware are. Please read through this information and then press the OK button. You will now be presented with an alert that states AdwCleaner needs to reboot your computer.

    AdwCleaner Reboot Prompt

    Please click on the OK button to let AdwCleaner reboot your computer.
  12. When your computer reboots and you are logged in, AdwCleaner will automatically open a log file that contains the files, registry keys, and programs that were removed from your computer.

    AdwCleaner Log

    Please review this log file and then close the Notepad Window.
  13. You should now download Emsisoft Anti-Malware, which will scan for and remove any other adware that may have been bundled with this adware. Please download and save the Emsisoft Anti-Malware setup program to your desktop from the link below:

    Emsisoft Anti-Malware Download Link

    The download is fairly large, so please be patient while it downloads.
  14. Once the file has been downloaded, double-click on the EmsisoftAntiMalwareSetup_bc.exe icon to start the program. If Windows Smart Screen issues an alert, please allow it to run anyway.

    If the setup program displays an alert about safe mode, please click on the Yes button to continue. You should now see a dialog asking you to agree to a license agreement. Please access the agreement and click on the Install button to continue with the installation.
  15. You will eventually get to a screen asking what type of license you wish to use with Emsisoft Anti-Malware.

    Select License Screen

    If you have an existing license key or want to buy a new license key, please select the appropriate option. Otherwise, select the Freeware or Test for 30 days, free option. If you receive an alert after clicking this button that your trial has expired, just click on the Yes button to enter freeware mode, which still allows the cleaning of infections.
  16. You will now be at a screen asking if you wish to join Emsisoft's Anti-Malware network. Read the descriptions and select your choice to continue.
  17. Emsisoft Anti-Malware will now begin to update it's virus detections.

    Downloading Updates

    Please be patient as it may take a few minutes for the updates to finish downloading.
  18. When the updates are completed, you will be at a screen asking if you wish to enable PUPs detection. We strongly suggest that you select Enable PUPs Detection to protect your computer from nuisance programs such as toolbars and adware.
  19. You will now be at a screen asking what type of scan you would like to perform.


    Scan selection screen

    Please select the Full Scan option to begin scanning your computer for infections. The Full Scan option will take the longest time to scan your computer, but will also be the most thorough. As you are here to clean infections, it is worth the wait to make sure your computer is properly scanned.
  20. Emsisoft Anti-Malware will now start to scan your computer for rootkits and malware. Please note that the detected infections in the image below may be different than what this guide is for.


    Scanning screen

    Please be patient while Emsisoft Anti-Malware scans your computer.
  21. When the scan has finished, the program will display the scan results that shows what infections where found. Please note, due to an updated version of Emsisoft Anti-Malware, the screenshot below may look different than the rest of the guide.

    Scan Results

    Now click on the Quarantine Selected button, which will remove the infections and place them in the program's quarantine. You will now be at the last screen of the Emsisoft Anti-Malware setup program, which you can close. If Emsisoft prompts you to reboot your computer to finish the clean up process, please allow it to do so. Otherwise you can close the program.
  22. As many rogues, adware, 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 Obrona Cleaner program. If your current anti-virus solution let this infection through, you may want to consider purchasing the PRO version of Emsisoft Anti-Malware to protect against these types of threats in the future.

View Associated Obrona Cleaner Files

%Desktop%\OBRONA Cleaner.lnk %LocalAppData%\Obrona Cleaner\ %LocalAppData%\Obrona Cleaner\application.log %LocalAppData%\Obrona Cleaner\imageformats\ %LocalAppData%\Obrona Cleaner\imageformats\qgif.dll %LocalAppData%\Obrona Cleaner\imageformats\qico.dll %LocalAppData%\Obrona Cleaner\install.log %LocalAppData%\Obrona Cleaner\libeay32.dll %LocalAppData%\Obrona Cleaner\msvcp100.dll %LocalAppData%\Obrona Cleaner\msvcr100.dll %LocalAppData%\Obrona Cleaner\ObronaCleaner.exe %LocalAppData%\Obrona Cleaner\OpenHardwareMonitorConsole\ %LocalAppData%\Obrona Cleaner\OpenHardwareMonitorConsole\OpenHardwareMonitorConsole.exe %LocalAppData%\Obrona Cleaner\OpenHardwareMonitorConsole\OpenHardwareMonitorLib.dll %LocalAppData%\Obrona Cleaner\platforms\ %LocalAppData%\Obrona Cleaner\platforms\qwindows.dll %LocalAppData%\Obrona Cleaner\Qt5Core.dll %LocalAppData%\Obrona Cleaner\Qt5Gui.dll %LocalAppData%\Obrona Cleaner\Qt5Network.dll %LocalAppData%\Obrona Cleaner\Qt5Sql.dll %LocalAppData%\Obrona Cleaner\Qt5Widgets.dll %LocalAppData%\Obrona Cleaner\sigar-x86-winnt.dll %LocalAppData%\Obrona Cleaner\SkipUAC.exe %LocalAppData%\Obrona Cleaner\soundOnScanFinished.wav %LocalAppData%\Obrona Cleaner\ssleay32.dll %LocalAppData%\Obrona Cleaner\startupTime.exe %LocalAppData%\Obrona Cleaner\Uninstaller.exe %StartMenu%\Programs\OBRONA Cleaner\ %StartMenu%\Programs\OBRONA Cleaner\OBRONA Cleaner.lnk %System%\Tasks\ObronaCleanerUacSkip %System%\Tasks\Startup Time Check

File Location Notes:

%System% is a variable that refers to the Windows System folder. By default this is C:\Windows\System for Windows 95/98/ME, C:\Winnt\System32 for Windows NT/2000, or C:\Windows\System32 for Windows XP/Vista/7/8.

%Desktop% means that the file is located directly on your desktop. This is C:\DOCUMENTS AND SETTINGS\<Current User>\Desktop\ for Windows 2000/XP, and C:\Users\<Current User>\Desktop\ for Windows Vista, Windows 7, and Windows 8.

%LocalAppData% refers to the current users Local settings Application Data folder. By default, this is C:\Documents and Settings\<Current User>\Local Settings\Application Data for Windows 2000/XP. For Windows Vista, Windows 7, and Windows 8 it is C:\Users\<Current User>\AppData\Local.

%StartMenu% refers to the Windows Start Menu. For Windows 95/98/ME it refers to C:\windows\start menu\, for Windows XP, Vista, NT, 2000 and 2003 it refers to C:\Documents and Settings\<Current User>\Start Menu\, and for Windows Vista/7/8 it is C:\Users\<Current User>\AppData\Roaming\Microsoft\Windows\Start Menu.

View Associated Obrona Cleaner Registry Information

HKCU\Software\OBRONA HKCU\Software\OBRONA\Obrona Cleaner HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tasks\{E4131981-A8CD-48B6-A491-C62B3E6546D2} HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\ObronaCleanerUacSkip HKCU\Software\Microsoft\Windows\CurrentVersion\Uninstall\ObronaCleaner HKCU\Software\Microsoft\Windows\CurrentVersion\Run\Obrona Cleaner "%LocalAppData%\Obrona Cleaner\ObronaCleaner.exe" --autorun

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.

search guides


Remember Me
Sign in anonymously