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Your computer has been locked Ransomware Removal Guide

By on June 14, 2013 @ 10:09 AM | Read 85,541 times.
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The Your computer has been locked Ransomware is computer infection that prevents you from accessing your Windows desktop, files, or applications until you pay a $300 ransom to the malware developers. This ransomware pretends to be a lock screen placed on your computer by the Department of Justice, Department of Homeland Security, and the FBI that states child pornography was detected on your computer. It then proceeds to state that you will face a $250,000 fine imprisonment from 4 to 30 years unless you pay a fine in the amount of $300. In reality, this is just a computer infection and not a legitimate government message, so you should ignore anything that it requests you to do.

As explained in this great blog article and site, this infection will also check your web browser history to see if you accessed certain sites. If you have, it will include the list of matched web sites in the lock screen to further scare you into thinking that your activities have been monitored. Once again, this is just the infection accessing your browser history and you do not have to be concerned about it.

 

Your computer has been locked Ransomware
Your computer has been locked Ransomware
For more screen shots of this infection click on the image above.
There are a total of 1 images you can view.

 

The text of the Your computer has been locked Ransomware lock screen screen is:

Your computer has been locked!

Your computer has been locked due to suspicion of illegal content downloading and distribution.

Mentioned illegal content (414Mb of video files) was automatically classified as child pornographic materials. Such actions, in whole or in part, violate following U.S. Federal Laws:
18 U.S.C. 2251 - Sexual Exploitation of Children (Production of child pornography)
18 U.S.C. 2252 - Certain activities relating to material involving the sexual exploitation of minors (Possession, distribution and receipt of child pornography)
18 U.S.C. 2252A - certain activities relating to material constituting or containing child pornography.

Any individual who violates, or attempts to violate, or conspires to violate mentioned laws shall be sentenced to a mandatory term of imprisonment from 4 to 30 years and shall be fined up to $250.000.

Technical details:
Involved IP address: <ip address>
Involved host name: <computer's host name>
Source or intermediary sites:

All suspicious files from your computer were transmitted to a special server and shall be used as evidences. Don't try to corrupt any data or unblock your account in an unauthorized way.

Your can be classified as occasional/unmotivated, according to title 17 (U.S. Code) 512. Thus is may be closed without prosecution. Your computer will be unblocked automatically.

In order to resolve situation in an above-mentioned way you should pay a fine of $300.

Without a doubt, this is a computer infection and not a legitimate message from any USA government agency. Therefore, ignore anything it displays and instead use the removal guide below to remove this ransomware from your computer.

 

Threat Classification:

 

Advanced information:

View Your computer has been locked Ransomware files.
View Your computer has been locked Ransomware Registry Information.

 

Tools Needed for this fix:

 

Symptoms that may be in a HijackThis Log:

O4 - HKCU\..\Run: [KB8456137] "%LocalAppData%\KB8456137\KB8456137.exe"

 

Guide Updates:

06/14/13 - Initial guide creation

 


Automated Removal Instructions for Your computer has been locked Ransomware using HitmanPro.Kickstart:

 

  1. Please print out these instructions as we will need to perform most of these steps on the infected computer. You will also need a USB drive, which will have all of its data erased and will then be formatted. Therefore, only use a USB drive that does not contain any data that you need. This USB drive must also have a size of at least 32 MB.

  2. As the Your computer has been locked Ransomware infection locks you out of your computer, you will need to create a bootable USB drive that contains the HitmanPro.Kickstart program. We will then boot your computer using this bootable USB drive and use it to clean the infection so that you are able to access Windows normally again.

    In order to do this please download HitmanPro from the following link and save it to your Windows desktop.

    http://www.bleepingcomputer.com/download/hitmanpro/

    When you visit the above page, please download the version that corresponds to the bit-type of the Windows version you will be using to create the Kickstart USB drive.

  3. Once HitmanPro has been downloaded, please insert the USB key that you would like to erase and use for the installation of HitmanPro.Kickstart.

  4. Once the USB drive is attached to your computer, double-click on the file named HitmanPro.exe (for 32-bit versions of Windows) or HitmanPro_x64.exe (for 64-bit versions of Windows). When the program starts you will be presented with the start screen as shown below.


    HitmanPro Start Screen


    Now click on the little picture of the person performing a kick as indicated by the red arrow above.

  5. This will open a screen where you will see some information on how to create the Kickstart USB drive.



    HitmanPro.Kickstart creation screen


    You should also a see a list of all USB drives that are currently attached to your computer as indicated by the blue arrow in the picture above. Select the USB drive that you would like to use and then click on the Install Kickstart button. Please note that this process will erase all of the data on the selected USB drive, so be sure to first backup any data that may be stored on it.

  6. You will now be presented with an alert stating that the USB flash drive will be erased. If you wish to proceed, click on the Yes button. Otherwise, click on the No button to cancel this process. Once you click on the Yes button, the program will begin to download the necessary files and will then install them on the USB Drive. When it has finished you can then click on the Close button to close the HitmanPro program.

  7. Now remove the Kickstart USB drive and insert it into the infected computer.

  8. Once it is inserted, turn off the infected computer and then turn it on. As soon as you power it on, look for text on the screen that tells you how to access the boot menu. This text will typically contain a key that they want you to press on your keyboard in order select the device you wish to use to boot your computer. The keys that are commonly associated with enabling the boot menu are F8, F11 or F12. You can see a screen shot of various screens that show you what key to press below.



    Various boot menu screens
    Screenshot courtesy of SurfRite.


    Once you determine the proper key that you need to press to access the Boot Menu, restart your computer again and start immediately tapping that key. Once the boot menu appears, you can select the device you wish to boot your computer from. Please select the USB drive that you have installed HitmanPro.Kickstart on and that is inserted into the infected computer.

  9. Your computer will now boot from the USB drive and automatically load the HitmanPro.Kickstart program. As it loads you will be presented with a screen asking you to select the USB boot options you wish to use.



    Kickstart USB Boot Options


    At this screen, please press 1 on your keyboard and you will see that Windows begins to start normally.

  10. When Windows starts, you should login as normal and you will once again see the screen locker for the ransomware. After about 15-20 seconds, the HitmanPro window will appear on top of the screen locker as shown in the image below.



    HitmanPro Kickstart overlayed on top of the ransomware screen


    When you see this screen, please click on the Next button to start the cleaning process.

  11. You will now be at the HitmanPro setup screen where you should make sure the option No, I only want to perform a one-time scan to check this computer..



    Kickstart Setup Options


    Once it is selected, please click on the Next button.

  12. HitmanPro will now begin to scan your computer for infections. When it has finished it will display a list of all the malware that the program found as shown in the image below. Please note that the infections found may be different than what is shown in the image.


    MalwareBytes Scan Results


    You should now click on the Next button to have HitmanPro remove the detected infections. When it is done you will be shown a Removal Results screen that shows the status of the various infections that were removed. At this screen you should click on the Next button and then on the next screen click on the Reboot button.

  13. HitmanPro will now reboot your computer and Windows should start normally. Once it has started, you should login as normal and you will find that the ransomware is no longer active and you can now access your Windows desktop.

  14. As many malware and unwanted programs 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 Your computer has been locked infection. If your current anti-virus solution let this infection through, you may want to consider purchasing the licensed version of HitmanPro 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 Your computer has been locked Ransomware Files:

%LocalAppData%\KB8456137\
%LocalAppData%\KB8456137\KB8456137.exe

File Location Notes:

%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.

 

Associated Your computer has been locked Ransomware Windows Registry Information:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run\KB8456137 = "%LocalAppData%\KB8456137\KB8456137.exe"
HKCU\Software\Win_32\

 


 

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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