Remove Security Essentials 2011 (Uninstall Guide)

  • November 4, 2010

Security Essentials 2011 is a rogue anti-spyware program from the same family as Internet Security 2010. This rogue is installed by malware that impersonates Flash updates or video codecs that are required to watch an online video. When you install these Trojans, instead of allowing you to watch the video they will instead download and install Security Essentials 2011 onto your computer without your permission or knowledge. Once Security Essentials 2011 is installed, it will be configured to start automatically when you log into Windows. Once started it will scan your computer, and when done, state that there are numerous infections on your computer, but will not allow you to remove any of them until you purchase the program. As the infections it shows are all fake, and as this program is a scam, you should definitely not purchase it. Also note that many of the files it states are infections are legitimate Windows files that if deleted could cause your computer to not operate correctly. Therefore, do not manually delete any of the files it states are infections.

  • Security Essentials 2011 screen shot
  • Scanning screen
  • Scan summary
  • Fake critical error
  • Fake system warning

While running, Security Essentials will protect itself by not allowing you to run any executables on your computer. When you attempt to run an executable it will display a message that states the executable is infected and then terminate the program. The message that you will see is:

Critical Error
Running of application is impossible!
A problem has been detected and the application has been shut down to prevent changes to your computer. Running of the <process name> is impossible due to the Net-Worm.Win32.Mytob.t activity. Perform the full system scan without delay to solve the issue.

This alert is fake and should be ignored as your programs are not infected. It is only performing this action this so that you cannot launch any programs that will allow you to remove it from your computer.

While the program is running you will also see a constant barrage of security alerts appear on your desktop. These alerts may be pop-up windows or little balloon alerts from your Windows taskbar that state active infections have been found, that private and personal data is at risk, or that your computer is under attack. Some of the messages that you may see are:

System warning!
Continue working in unprotected mode is very dangerous. Viruses can damage your confidential data and work on your computer. Click here to protect your computer.

Critical Warning!
Critical System Warning! Your system is probably infected with a version of Trojan-Spy.HTML.Visafraud.a. This may result in website access passwords being stolen from Interner Explorer, Mozilla Firefox, Outlook etc. Click Yes to scan and remove threats. (recommended)

As you can see, Security Essentials 2011 does its best to scare you into thinking that your computer has a security problem so that you will purchase the program.

Without a doubt, this program was created to scare you into thinking you are infected so that you will be scammed into purchasing the program. With that said, you should definitely not purchase it, and if you have, you should contact your credit card company and dispute the charges stating that the program is a computer infection. Finally, to remove Security Essentials 2011 and any related malware please use the removal guide below.

Security Essentials 2011 Removal Options

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

  2. 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.

  3. Before we can do anything we must first end the processes that belong to Security Essentials 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.

  4. Once it is downloaded, double-click on the iExplore.exe icon in order to automatically attempt to stop any processes associated with Security Essentials 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 Security Essentials 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 Security Essentials 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. 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.

  5. At this point you should download Malwarebytes Anti-Malware, or MBAM, to scan your computer for any any infections or adware that may be present. Please download Malwarebytes from the following location and save it to your desktop:

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

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

  7. Double-click on the icon on your desktop named mb3-setup-1878.1878- This will start the installation of MBAM onto your computer.

  8. 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.

  9. 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. If there is an update available for Malwarebytes it will automatically download and install it before performing the scan.

  10. MBAM will now start scanning your computer for malware. This process can take quite a while, so we suggest you do something else and periodically check on the status of the scan to see when it is finished.

    Malwarebytes Anti-Malware

  11. 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 Remove Selected button to remove all the seleted 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.

  12. You can now exit the MBAM program.

  13. 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 Security Essentials 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.

View Associated Security Essentials 2011 Files

%UserProfile%\Application Data\Microsoft\Internet Explorer\Quick Launch\Security Essentials 2011.lnk %UserProfile%\Application Data\Security Essentials 2011\ %UserProfile%\Application Data\Security Essentials 2011\SE2010.exe %UserProfile%\Application Data\Security Essentials 2011\sejgdls\ %UserProfile%\Application Data\Security Essentials 2011\sejgdls\semblgbls.cfg %UserProfile%\Desktop\Security Essentials 2011.lnk %UserProfile%\Start Menu\Security Essentials 2011.lnk c:\Program Files\Securityessentials2010\

File Location Notes:

%UserProfile% refers to the current user's profile folder. By default, this is C:\Documents and Settings\<Current User> for Windows 2000/XP, C:\Users\<Current User> for Windows Vista/7/8, and c:\winnt\profiles\<Current User> for Windows NT.

View Associated Security Essentials 2011 Registry Information

HKEY_CURRENT_USER\Software\SE2010 HKEY_CLASSES_ROOT\CLSID\{3F2BBC05-40DF-11D2-9455-00104BC936FF} HKEY_CLASSES_ROOT\SE2010.DocHostUIHandler HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "updatesst" HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Winlogon "Shell" = "%UserProfile%\Application Data\Security Essentials 2011\SE2010.exe" /hide"

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