Remove PC Security 2011 (Uninstall Guide)

  • February 7, 2011

PC Security 2011 is a fake rogue anti-spyware program from the same family as Win7 AV. This rogue utilizes web pages that host exploit kits that attempt to exploit vulnerabilities in your Windows operating system or in programs that may be installed on your computer in order to install PC Security 2011 on to your computer without your permission. Once the rogue is installed it will be configured to start automatically when Windows starts. Once started it will scan your computer and display numerous infections, but will state that you first need to purchase the program before you can remove any of them. As these scan results are all fake, you should not purchase this program based on anything that is displayed.

  • PC Security 2011 screen shot
  • Scanning screen
  • Scan summary
  • Adware detected alert
  • Fake Windows Defender alert
  • Identity Theft Alert
  • Runtime Protection Alert
  • Security Warning
  • Spyware warning

In order to protect itself PC Security 2011 will also terminate many programs when you launch them. It does this in order to protect itself from security programs that you may attempt to run in order to remove this infection. When it terminates a program it will display the following alerts that states the program is infected or has crashed:

PC Security 2011 - Runtime protection
PC Security 2011 has blocked spyware activity for this program.
iexplore.exe is probably infected with Conficker.B virus. This worm attempts to send your personal information to remote host through iexplore.exe.

Windows TaskManager has encountered a problem and needs to close. We are sorry for the inconvenience.

Just like the fake scan results, these infection messages are just another tactic to protect itself and scare you into thinking your infected.

While running, PC Security 2011 will also display a continuous stream of security alerts and nag screens that contain messages that state your computer is severely infected or that applications are sending private information to a remote computer. The text of some of these alerts, including their spelling and grammatical errors, include:

Warning! Adware Detected!
Netsky.Q.adware has been detected on your PC. A is a spyware program that may perform opening of a number of website popup's and ad's.

Windows Defender Warning
Review harmful of potetnially unwanted software
Windows defender detected programs that might compromise your private or damage your computer.
Name: Conficker.B virus
Alert Level: Severe

Warning! Identity theft attempt detected
Hidden connection to IP: <ip address>
Target: Microsoft Corporation keys

In order to ensure that your Windows system has highest level of protection, you should update your security software regulary.

Spyware Warning
Sality.AM virus Spyware detected.
Spyware try to hide associated malicious programs.

All of these alerts should be ignored when you see them as they are just trying to scare you into purchasing the program.

Without a doubt, PC Security 2011 was created for one reason; to scare you into thinking your computer is infected so that you will then purchase the program. It goes without saying that you should absolutely not purchase this program, and if you already have, you should contact your credit card company or payment company and dispute the purchase stating that the program is a computer virus and a scam. Finally, to remove this infection and related malware, please use the removal guide below.

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 will 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. Now we must first end the processes that belong to PC Security 2011 and clean up some Registry settings so they do 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, scroll down and click on the click on the link labeled eXplorer.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 eXplorer.exe icon in order to automatically attempt to stop any processes associated with PC Security 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 PC Security 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 PC Security 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-1878.1878-3.0.6.1469.exe. 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 this infection also changes your Windows HOSTS file, we want to replace this file with the default version for your operating system. Please note that if you or your company has added custom entries to your HOSTS file then you will need to add them again after restoring the default HOSTS file. In order to protect itself, PC Security 2011 changes the permissions of the HOSTS file so you can't edit or delete it. To fix these permissions please download the following batch file and save it to your desktop:
    hosts-perm.bat Download Link
    When the file has finished downloading, double-click on the hosts-perm.bat file that is now on your desktop. If Windows asks if you if you are sure you want to run it, please allow it to run. Once it starts you will see a small black window that opens and then quickly goes away. This is normal and is nothing to be worried about. You should now be able to access your HOSTS file.

  14. We now need to delete the C:\Windows\System32\Drivers\etc\HOSTS file. Once it is deleted, download the following HOSTS file that corresponds to your version of Windows and save it in the C:\Windows\System32\Drivers\etc folder. If the contents of the HOSTS file opens in your browser when you click on a link below then right-click on the appropriate link and select Save Target As..., if in Internet Explorer, or Save Link As.., if in Firefox, to download the file.
    Windows XP HOSTS File Download Link
    Windows Vista HOSTS File Download Link
    Windows 2003 Server HOSTS File Download Link
    Windows 2008 Server HOSTS File Download Link
    Windows 7 HOSTS File Download Link
    Your Windows HOSTS file should now be back to the default one from when Windows was first installed.

  15. 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 PC Security 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 PC Security 2011 Files

%UserProfile%\Application Data\.csrss %UserProfile%\Application Data\<random>.exe %UserProfile%\Application Data\413A.C81 %UserProfile%\Application Data\<random>.exe %UserProfile%\Application Data\<random>.exe %UserProfile%\Application Data\dwm.exe %UserProfile%\Application Data\Microsoft\conhost.exe %UserProfile%\Application Data\PC Security 2011\ %UserProfile%\Application Data\PC Security 2011\_001.png %UserProfile%\Application Data\PC Security 2011\_002.png %UserProfile%\Application Data\PC Security 2011\_005.png %UserProfile%\Application Data\PC Security 2011\_006.png %UserProfile%\Application Data\PC Security 2011\_007.png %UserProfile%\Application Data\PC Security 2011\_ico1.png %UserProfile%\Application Data\PC Security 2011\_ico2.png %UserProfile%\Application Data\PC Security 2011\_ico3.png %UserProfile%\Application Data\PC Security 2011\activate_01.png %UserProfile%\Application Data\PC Security 2011\activate_02.png %UserProfile%\Application Data\PC Security 2011\activate_03.png %UserProfile%\Application Data\PC Security 2011\activate_hdr_1.png %UserProfile%\Application Data\PC Security 2011\activate_hdr_2.png %UserProfile%\Application Data\PC Security 2011\activate_hdr_bg.png %UserProfile%\Application Data\PC Security 2011\at.png %UserProfile%\Application Data\PC Security 2011\balloon_174.png %UserProfile%\Application Data\PC Security 2011\balloon_201.png %UserProfile%\Application Data\PC Security 2011\bg_button_a.png %UserProfile%\Application Data\PC Security 2011\bg_button_span.png %UserProfile%\Application Data\PC Security 2011\blank.gif %UserProfile%\Application Data\PC Security 2011\block_p_01.png %UserProfile%\Application Data\PC Security 2011\block_p_03.png %UserProfile%\Application Data\PC Security 2011\blue.png %UserProfile%\Application Data\PC Security 2011\critical_202.png %UserProfile%\Application Data\PC Security 2011\defender_001.png %UserProfile%\Application Data\PC Security 2011\defender_002.png %UserProfile%\Application Data\PC Security 2011\defender_003.png %UserProfile%\Application Data\PC Security 2011\defender_004.png %UserProfile%\Application Data\PC Security 2011\defender_005.png %UserProfile%\Application Data\PC Security 2011\defender_006.png %UserProfile%\Application Data\PC Security 2011\defender_007.png %UserProfile%\Application Data\PC Security 2011\defender_008.png %UserProfile%\Application Data\PC Security 2011\filder.png %UserProfile%\Application Data\PC Security 2011\header.png %UserProfile%\Application Data\PC Security 2011\i_1.png %UserProfile%\Application Data\PC Security 2011\i_2.png %UserProfile%\Application Data\PC Security 2011\i_3.png %UserProfile%\Application Data\PC Security 2011\level.png %UserProfile%\Application Data\PC Security 2011\loading.gif %UserProfile%\Application Data\PC Security 2011\logo.png %UserProfile%\Application Data\PC Security 2011\m.png %UserProfile%\Application Data\PC Security 2011\off.png %UserProfile%\Application Data\PC Security 2011\on.png %UserProfile%\Application Data\PC Security 2011\progressbar.gif %UserProfile%\Application Data\PC Security 2011\progressbar_bg_1.gif %UserProfile%\Application Data\PC Security 2011\prot.png %UserProfile%\Application Data\PC Security 2011\scan_res_icon.png %UserProfile%\Application Data\PC Security 2011\t01.png %UserProfile%\Application Data\PC Security 2011\t02.png %UserProfile%\Application Data\PC Security 2011\update.png %UserProfile%\Application Data\PC Security 2011\w1.png %UserProfile%\Application Data\PC Security 2011\w2.png %UserProfile%\Application Data\PC Security 2011\w3.png %UserProfile%\Application Data\PC Security 2011\w4.png %UserProfile%\Application Data\PC Security 2011\w5.png %UserProfile%\Application Data\PC Security 2011\warning_popup_072.png %UserProfile%\Application Data\PC Security 2011\warning_popup_200.png %UserProfile%\Application Data\Uninstall_Security\ %UserProfile%\Application Data\Uninstall_Security\uninstall_security.lnk %Temp%\1.tmp %Temp%\1.tmp.exe %Temp%\4.tmp %Temp%\csrss.exe %UserProfile%\Start Menu\Programs\PC Security 2011\ %UserProfile%\Start Menu\Programs\PC Security 2011\PC Security 2011.lnk %UserProfile%\Start Menu\Programs\Startup\PC2011.lnk c:\Program Files\PC Security 2011\ c:\Program Files\PC Security 2011\PC2011.exe

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.

%Temp% refers to the Windows Temp folder. By default, this is C:\Windows\Temp for Windows 95/98/ME, C:\DOCUMENTS AND SETTINGS\<Current User>\LOCAL SETTINGS\Temp for Windows 2000/XP, and C:\Users\<Current User>\AppData\Local\Temp in Windows Vista, Windows 7, and Windows 8.

View Associated PC Security 2011 Registry Information

HKEY_CURRENT_USER\Software\PC Security 2011 HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings "ProxyServer" = 'http=127.0.0.1:53495' HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "conhost" = '%UserProfile%\Application Data\Microsoft\conhost.exe' HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings "ProxyEnable" = '1' HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows "load" = '%Temp%\csrss.exe'

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.

Login

Remember Me
Sign in anonymously