An infection with the dangerous .leon Virus leads to serious security issues. Victims can restore and protect their computers by following our complete removal guide.
Remove .leon Virus and Restore PC
Manual Removal Guide
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Distribution of .leon Virus
The .leon Virus is a new virus which has been sighted in attack campaign. At the moment the security researchers cannot determine the primary infection strategy. We presume that the most widely used tactics are going to be employed.
Among them are the email messages created in an automated way and sent to large lists of potential victims. The .leon Virus can be directly attached to the messages. This is one of the easiest way for the criminals to attempt the infection. However a lot of email hosting providers usually capture the signatures of the virus and as such discard such messages or label them as dangerous or spam. Other infection methods related to this one is the option of inserting hyperlinks in the body content of the messages. The links are usually labelled as leading to a familiar website or a file of user interest. Redirects can redirect to hacker-controlled sites, infected payloads or other instances that can lead to an .leon Virus infection.
The computer criminals behind the malware can create malicious sites or download portals which distribute malware of different kinds, including the .leon Virus. A popular option is the use of infected documents which may be of different types ‒ spreadsheets, rich text documents, presentations and databases. They are modified to initiate the virus once the built-in scripts are run. Usually when the files are opened a notification will ask the users to run the macros (scripts). If this is done the infection follows.
The hacker-controlled sites are specialist portals that have been created either manually or automatically by the criminals behind the .leon Virus. They can either directly distribute the threat by initiating various scripts or automated operations or link to such instances. Redirects are usually caused by email interaction, ad networks or other browsing activity. However one of the main sources is the availability of browser hijackers. They are malicious addons made for the most popular web browsers ‒ Mozilla Firefox, Google Chrome, Internet Explorer, Opera, Microsoft Edge and Safari. Once installed they not only infect the users with the malware, but also redirect the victims to a hacker-controlled site. Depending on the configuration the browser hijackers can also steal sensitive information such as any stored passwords, account credentials, history, bookmarks, form data and settings.
Impact of .leon Virus
The .leon virus is a malware strain that originates from the Blind ransomware family. This is one of the most recent malwaer families that have started to spawn customized strains. One of the first versions of it were detected back in September 2017. So far there have been two major iterations, the .leon virus seems to be based on the older code.
The early samples do not contain many advanced features however they were found to perform system alterations. They are generally related to stealth protection techniques that hide the malware code from discovery. This can be achieved by gathering information about the compromised hosts including the installed anti-virus software. This is used to bypass their detection engines. Advanced forms can be used to act against sandbox and debugging environments as well as virtual machine instances. In cases when this is not possible the .leon virus can automatically delete itself.
Further malware behavior includes the following processes:
- Information Gathering — The .leon virus can be used to extract sensitive information from the victims. Usually it is categorized as either personally-identifiable data or anonymous metrics.
- Malware Delivery — in certin situations the .leon virus can be used as a payload delivery mechanism to introduce other threats to the target computers.
- Trojan Component — They are used to take over control of the victim computers. Advanced versions of this module can be used to record the mouse movement and kestrokes of the victims, as well as execute arbitrary code.
- System Modification — The KNCTR virus is used to institute various changes to the computers such as Windows registry values, boot up modifications and etc. The victims can experience performance issues, application failure and the find that certain Windows services will fail.
Once all prerequisite conditions have been met the ransomware engine is started. It uses a built-in list of target file type extensions that constitute the most widely used data: backups, archives, images, music, videos, documents, databases and etc. A strong cipher is used to process them data which is then renamed with the .leon virus extension. The ransomware note is created in a How_Decrypt_Files.hta file which reads the following:
All your files have been encrypted!
All your files have been encrypted due to a security problem with your PC. If you want to restore them, write us to the e-mail [email protected]
You have to pay for decryption in Bitcoins. The price depends on how fast you write to us. After payment we will send you the decryption tool that will decrypt all your files.
Free decryption as guarantee
Before paying you can send us up to 3 files for free decryption. The total size of files must be less than 1Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.)
How to obtain Bitcoins
The easiest way to buy bitcoins is LocalBitcoins site. You have to register, click ‘Buy bitcoins’, and select the seller by payment method and price.
https://localbitcoins.com/buy_bitcoins
Also you can find other places to buy Bitcoins and beginners guide here:
http://www.coindesk.com/information/how-can-i-buy-bitcoins/
Your personal identification number:
3D1841ED0059EFAD0392443421FF6*****
The security analysts report that the .leon virus propagates through the host and burrows itself deep into the system components.
Remove .leon Virus and Restore PC
WARNING! Manual removal of the .leon Virus requires being familiar with system files and registries. Removing important data accidentally can lead to permanent system damage. If you don’t feel comfortable with manual instructions, download a powerful anti-malware tool that will scan your system for malware and clean it safely for you.
SpyHunter anti-malware tool will diagnose all current threats on the computer. By purchasing the full version, you will be able to remove all malware threats instantly. Additional information about SpyHunter / Help to uninstall SpyHunter
.leon Virus – Manual Removal Steps
Start the PC in Safe Mode with Network
This will isolate all files and objects created by the ransomware so they will be removed efficiently. The steps bellow are applicable to all Windows versions.
1. Hit the WIN Key + R
2. A Run window will appear. In it, write msconfig and then press Enter
3. A Configuration box shall appear. In it Choose the tab named Boot
4. Mark Safe Boot option and then go to Network under it to tick it too
5. Apply -> OK
Remove .leon from Windows
Here’s a way to remove the program. This method will work regardless if you’re on Windows 10, 8, 7, Vista or XP. Simply selecting the program and pressing delete won’t work, as it’ll leave a lot of small files. That’s bad because these leftovers can linger on and cause all sorts of problems. The best way to delete a program is to uninstall it. Here’s how you can do that:
1. Hold the “Windows” button (It’s between CTRL and Alt on most keyboards) and press “R”. You’ll see a pop-up window.
2. In the textbox, type “appwiz.cpl”, then press“ Enter ”.
3. The “Programs and features” menu should now appear. It’s a list of all the programs installed on the PC. Here you can find the program, select it, and press “Uninstall“.
Remove .leon Virus From Your Browser
Before resetting your browser’s settings, you should know that this action will wipe out all your recorded usernames, passwords, and other types of data. Make sure to save them in some way.
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1. Start Mozilla Firefox. In the upper right corner, click on the Open menu icon and select “Add-ons“.
2. Inside the Add-ons Manager select “Extensions“. Search the list of extensions for suspicious entries. If you find any, select them and click “Remove“.
3. Click again on the Open menu icon, then click “Options“.
4. In the Options window, under “General” tab, click “Restore to Default“.
5. Select “Search” in the left menu, mark the unknown search engine and press “Remove”.
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1. Start Google Chrome. On the upper-right corner, there a “Customize and Control” menu icon. Click on it, then click on “Settings“.
2. Click “Extensions” in the left menu. Then click on the trash bin icon to remove the suspicious extension.
3. Again in the left menu, under Chrome, Click on “Settings“. Go under “On Startup” and set a new page.
4. Afterward, scroll down to “Search“, click on “Manage search engines“.
5. In the default search settings list, find the unknown search engine and click on “X“. Then select your search engine of choice and click “Make default“. When you are ready click “Done” button in the right bottom corner.
2. In the “Manage add-ons” window, bellow “Add-on Types“, select “Toolbars and Extensions“. If you see a suspicious toolbar, select it and click “Remove“.
3. Then again in the “Manage Add-ons” window, in “Add-on Types“, Select “Search Providers“. Chose a search engine and click “Set as default“. Select the unknown search engine and click “Remove and Close”.
4. Open the Tools menu, select “Internet Options”.
5. In the “General” tab, in “Home page”, enter your preferred page. Click “Apply” and “OK”.
Repair Windows Registry
1. Again type simultaneously the WIN Key + R key combination
2. In the box, write regedit and hit Enter
3. Type the CTRL+ F and then write the malicious name in the search type field to locate the malicious executable
4. In case you have discovered registry keys and values related to the name, you should delete them, but be careful not to delete legitimate keys
Click for more information about Windows Registry and further repair help
