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Lanset Virus Removal Guide (+Decode .lanset files) – Djvu Ransomware

Lanset – Ransomware

The Lanset mean a ransomware-type infection. The virus comes from the Djvu ransomware family. Lanset was elaborated particularly to encrypt all major file types. When the file is encrypted people are not able to use them. Lanset adds the “.lanset” extension for each file encrypted by it. For example, the file “myphoto.jpg“, when encrypted by Lanset, will be renamed into “myphoto.jpg.lanset“. As quickly as the encryption is finished, Lanset places a special text file into every folder containing the encrypted data.

The message given by Lanset text file requesting the ransom is absolutely the same as the statements given by other ransomware representatives coming from the Djvu type. It actually points out that the information is encrypted and that the only way to restore it is to use a an unique decryption key. Regretfully, this is absolutely true. The kind of cryptography mechanism applied by Lanset is still not properly examined. Still, it is absolutely particular that each victim may be given the specific decryption key, which is absolutely unique. It is impossible to restore the files without the key available.

Another trick of Lanset is that the victims cannot gain access to the key. The key is stored on a particular server run by the frauds connected with Lanset ransomware. To get the key and recover the important information people need to pay the ransom, which totals up to $980. To acquire the payment details users are instructed to contact the frauds through email or telegram. The alert also suggests that the users need to contact the Lanset developers within 72 hours after the encryption occurred. The message says that doing so users will get a 50% discount, so the ransom amount will drop down to $490.

Nonetheless, regardless of the asked for quantity, people must stay away from paying the ransom. Cyber frauds are unfair, so they tend to completely disregard what their victims feel about the problem, even when the payment reaches their pockets. This is why paying the ransom normally does not give any positive outcome and people just lose their money for absolutely nothing.

We highly recommend that you do not contact these crooks and definitely do not transfer money into their accounts. It is said to admit that there are no utilities able to crack Lanset ransomware and to recover the data data totally free. Thus, the only best decision is to recover the lost information from the available backup.

Virus Summary

Name Lanset Ransomware
File Extension .lanset
Type Ransomware
Family Djvu
Short Description The ransomware encrypts all the data stored on your system and requires a ransom to be paid on your part supposedly to recover your important files.
Symptoms File encryption by the ransomware is performed by means of the AES and RSA encryption algorithms. Once the encryption is completed, the ransomware adds its special lanset extension to all the files modified by it.
Distribution Method Spam Emails, Email Attachments
Similar Infections Redmat, Stone, Doples
Removal Tool   GridinSoft Anti-Malware

Keep in mind that the internet is now overwhelmed with threats that look similar to Lanset ransomware. It is similar Redmat and many other ransomware-type threats. Destructive programs of such kind are usually elaborated to encrypt important information and to set forth the need prior to the user to pay the ransom. The peculiarity of all such ransomware threats is that all apply a comparable algorithm to create the special decryption key for files decryption.

Therefore, as long as the ransomware is still being developed or has some hidden bugs, by hand recovering the information is merely not feasible. The only method to avoid the loss of your essential files is to regularly create backups of your important information.

Keep in mind that even if you create such backups, they should be put into a special storage utility not connect to your main computer. You may use the USB Memory Stick or external hard disk drive for this purpose, or refer to the help of the cloud storage. If you store your backup files on your common system they may be encrypted together with other files, so it’s certainly not a good storage place.

How did ransomware infect my computer?

There are several methods used by online frauds to distribute Lanset ransomware. Despite the fact that it doubts how exactly Lanset injects your PC, there are some leaks through which it may infiltrate the system:

  • integration with third-party software application, especially freeware;
  • spam emails from unidentified senders;
  • websites rendering free hosting services;
  • pirated peer-to-peer (P2P) downloads.

Often Lanset ransomware might exist as some genuine software application, for example, in the pop-ups instructing users to carry out some crucial software updates. This is the common trick used by online frauds to persuade people into downloading and installing Lanset infection manually, by ways of their direct participation in the installation process.

Furthermore, the criminals might describe various e-mail spam methods to inject malicious codes into PC. So, they may refer to to sending unsolicited spam e-mails with tricky notices promoting users to download the attachments or click on certain download links, for example, the ones motivating users to open some video, documents, tax reports or invoices.

Needless to mention, opening such files or clicking on such dangerous links may significantly damage the PC. Fictitious Adobe Flash Player update informs may result in Lanset virus injection. As for the cracked applications, these illegally downloaded programs may likewise include harmful codes resulting in Lanset secret installation. Lastly, injection of Lanset may take place by ways of Trojans that privately get injected into the system and install harmful tools without the user’s consent.

Is there any method to prevent the injection of Lanset ransom virus?

Despite the fact that there is no 100% guarantee to avoid your system from getting infected, there are some pieces of suggestions we want to share with with you. First off, be really careful when you surf the web and particularly while downloading totally free apps. Stay away from opening suspicious email attachments, especially when the sender of the email is not familiar to you.

Keep in mind that some freeware installers may consist of other unwanted utilities in the bundle, so they may be malicious. Ensure that your current anti-virus and your entire OS is always duly updated.

Obviously, downloading pirated software is prohibited and may result in necessary damage to be made for your system. For this reason, stay away from downloading cracked software. You are also highly recommended to reconsider your existing security software and potentially change to another security solution that can render far better services of protecting your PC.

Screenshot of files with “.lanset” extension added by the ransomware:
Lanset Ransomware - encrypt files with .lanset extension

Use GridinSoft Anti-Malware to remove Lanset ransomware from your computer

1.Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

  GridinSoft Anti-Malware

2. Double-click on the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-ag.exe file to install GridinSoft Anti-Malware on your computer.
GridinSoft Anti-Malware
An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.
GridinSoft Anti-Malware Setup

3. Press Install button for run GridinSoft Anti-Malware.

GridinSoft Anti-Malware Install

3.Once installed, GridinSoft Anti-Malware will automatically run.

GridinSoft Anti-Malware  Start

4. Wait for the GridinSoft Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your computer for Win Speedup 2018 and other malicious programs. This process can take a 20-30 minutes, so we suggest you periodically check on the status of the scan process.
GridinSoft Anti-Malware Scan

5. Click on “Clean Now”.

When the scan has completed, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.
GridinSoft Anti-Malware Scan Result

[Total: 1    Average: 5/5]

About Daniel Zimmermann

Daniel Zimmermann has been writing on security and malware subjects for many years and has been working in the security industry for over 10 years. Daniel was educated at the Saarland University in Saarbrücken, Germany and currently lives in New York.

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  1. need decryp my files .lanset

  2. Hello I formatting my pc before I know this virus
    Now my files is .lanset
    Please how I decrypt it

  3. Hello

    My computer is affected by .lanset ransomware and I get this message when trying to decrypt affected files.
    Please help me in this regard.

    Unidentified ID: QgC60uky34vJDGj48uoW8s92fvSPX9sR3SIhvj6f
    Unidentified ID: faLqfTl9yJBMMKsPhAv8WKbIdsFgqRtco70kHSt1
    MACs: 5E:08:7E:9F:96:8C, C4:E9:84:16:70:DA, 6C:F0:49:4F:78:09
    STOPDecrypter v2.1.0.9
    OS Microsoft Windows NT 6.1.7601 Service Pack 1, .NET Framework Version 4.0.30319.42000

    No key for ID: QgC60uky34vJDGj48uoW8s92fvSPX9sR3SIhvj6f (.lanset )
    Unidentified ID: QgC60uky34vJDGj48uoW8s92fvSPX9sR3SIhvj6f (.lanset )
    MACs: 5E:08:7E:9F:96:8C, C4:E9:84:16:70:DA, 6C:F0:49:4F:78:09
    Decrypted 0 files, skipped 35

  4. First at all, you need to clean your PC from viruses. I recommend to use GridinSoft Anti-malware. Link:


    After cleaning, try to unzip and run STOPDecrypter tool for decode your .dotmap files. Here is direct link for download:


  5. Seyed Alireza Ghasemi nezhad


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