How to remove LASAN ransomware and decrypt .lasan files

What is LASAN?

LASAN ransomware, also known as DRV ransomware, is the newest virus everyone can possibly face. It doesn’t belong to any already known family of file-encryption ransomware viruses. Attacks of LASAN ransomware are always unpredictable due to the ways it spreads. Often hackers inject the code of the virus into a regular file and send it by email. Once such a file is opened, the code is immediately executed. However, the most widely used one is the usage of installers. Such installers are shared by file free sharing services, torrent trackers or even by specially made websites. As the rule, malicious installers imitate ones issued by trustful companies. That’s why the most of users don’t even suppose, that the file is infected. Once the virus successfully gets into the system, it makes changes in the Registry and infects system processes. Then it searches for the files to encrypt. As the result, the files get new “.lasan” extension and unreadable for any software. Then the virus drops the note, called “READ_ME.txt”. Generally, by the means of such notes hackers promote the decryptors for the files, but in our case it left only the questionable message. Hackers don’t ask for any payment and don’t say that there is a decryptor. Still, we have a way out. For this purpose we’ve prepared the detailed guide on how to remove LASAN ransomware and decrypt.lasan files.


Files has been encrypted with DRV
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Article’s Guide

  1. How to remove LASAN Ransomware from your computer
  2. How to decrypt .lasan files
  3. Data Recovery
  4. Automated decryption tools
  5. Other software

How to remove LASAN Ransomware from your computer?

We strongly recommend you to use a powerful anti-malware program that has this threat in its database. It will mitigate the risks of the wrong installation, and will remove LASAN ransomware from your computer with all of its leftovers and register files.

Solution for Windows users: our choice is Norton 360 . Norton 360 scans your computer and detects various threats like LASAN, then removes it with all of the related malicious files, folders and registry keys.

Download Norton windows compatible

If you are Mac user, we advise you to use Combo Cleaner.

How to decrypt .lasan files?

Once you’ve removed the virus, you are probably thinking how to decrypt .lasan files or at least restore them. Let’s take a look at possible ways of decrypting your data.

Restore .lasan files with Data Recovery

Data Recovery

  1. Download and install Data Recovery
  2. Select drives and folders with your files, then click Scan.
  3. Choose all the files in a folder, then press on Restore button.
  4. Manage export location.

Download Stellar Data Recovery

The download is an evaluation version for recovering files. To unlock all features and tools, purchase is required ($49.99-299). By clicking the button you agree to EULA and Privacy Policy. Downloading will start automatically.

Decrypt .lasan files with other software

Unfortunately, due to the novelty of LASAN ransomware, there are no decryptors that can surely decrypt encrypted files. Still, there is no need to invest in the malicious scheme by paying a ransom. You are able to recover files manually.
You can try to use one of these methods in order to restore your encrypted data manually.

Decrypt .lasan files with Emsisoft decryptor

This software includes information about more than 100 viruses of STOP(DJVU) family and others. All that you need are two files or some luck. You can freely use it as it distributes free of charge. If it doesn’t work for you, you can use another method.

Restore .lasan files with Windows Previous Versions

This feature is working on Windows Vista (not Home version), Windows 7 and later versions. Windows keeps copies of files and folders which you can use to restore data on your computer. In order to restore data from Windows Backup, take the following steps:

  1. Open My Computer and search for the folders you want to restore;
  2. Right-click on the folder and choose Restore previous versions option;
  3. The option will show you the list of all the previous copies of the folder;
  4. Select restore date and the option you need: Open, Copy and Restore.

Restore .lasan files with System Restore

You can always try to use System Restore in order to roll back your system to its condition before infection infiltration. All the Windows versions include this option.

  1. Type restore in the Search tool;
  2. Click on the result;
  3. Choose restore point before the infection infiltration;
  4. Follow the on-screen instructions.

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