What Is Lorenz Virus
Lorenz is the name of a dangerous ransomware infection, whose main purpose of the activity is to convince victims to pay ransom to get their files to work again. The main idea of this ransomware virus is to get users to pay ransom in the form of BitCoin to the cyber-criminals behind the virus. To do this, the Lorenz virus locks the files using an encryption algorithm which makes the decryption available only if you have a specific decryptor. The .Lorenz.sz40 file extension and the HELP_SECURITY_EVENT.html note are added after encryption is complete and they are created in order to extort victims to pay the ransom, providing them with instructions on how to do that.
Read this article to learn how to remove Lorenz virus from your computer and try to restore files encrypted by it.
Lorenz Summary
Name | Lorenz |
File Extension | .Lorenz.sz40 |
Type | Ransomware, Cryptovirus |
Short Description | The ransomware encrypts files on your computer system and demands a ransom to be paid to allegedly recover them. |
Symptoms | The ransomware will encrypt your files by appending the . extension to them. |
Ransom Demanding Note | HELP_SECURITY_EVENT.html |
Distribution Method | Spam Emails, Email Attachments |
Detection Tool |
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User Experience | Join Our Forum to Discuss Lorenz. |
Lorenz Virus – What We Know About It
Lorenz virus may infect your computer via several different methods, just like other ransomware viruses, such as F1 Virus, Hive virus and Douarix virus. One of the methods is if the ransomware is hidden as a seemingly legitimate file available for download from some site where you might have been searching for:
- Cracks for software.
- Software activation files.
- Key generators or keygens.
- Patches for games or software.
Lorenz virus may also get sent to you as some type of legitimate e-mail attachment that seems very important, but in fact contains the virus, for example:
- Flight or train tickets invoices.
- Documents that are important for you.
- Receipts for orders.
- Invoices for purchases you do not remember making.
Once it has infected your computer, the Lorenz virus may begin to modify your registry entries and add custom values with data, allowing it to run automatically on system boot:
- RunOnce
- Run
Lorenz virus may also drop its malware files on your computer and these files may exist in the following directories:
- %Local%
- %LocalLow%
- %AppData%
- %Temp%
- %Roaming%
Among the dropped files is the ransom note of this virus, called HELP_SECURITY_EVENT.html, that contains the following message:
.Lorenz.sz40 Files
The .Lorenz.sz40 files are encrypted and key data from the original files are replaced with data from the encryption algorithm used to make them unopenable. The virus scans for the files to encrypt them and may look for them based on their file extensions. The following files are endangered:
- Video file types.
- Document files.
- Backups of Windows.
- Audio file kinds.
- Database files
- Archive types of files.
- Image file types (.jpg, .bmp, .png).
After encryption, the files are no longer openable and appear like the following:
Image.jpg.Lorenz.sz40
Remove Lorenz Virus and Try to Restore Files
Lorenz Virus can be removed from your computer if you follow the removal instructions that have been created underneath this article. They are specifically designed to detect and delete this malware from your drive. Be advised that the most preferred method to remove Lorenz virus is to scan your computer using anti-malware software. Such a program has been created with the main idea to detect and remove all malware files automatically from your computer and protect it in the future as well.
- Step 1
- Step 2
- Step 3
- Step 4
- Step 5
Step 1: Scan for Lorenz with SpyHunter Anti-Malware Tool
Ransomware Automatic Removal - Video Guide
Step 2: Uninstall Lorenz and related malware from Windows
Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:
Step 3: Clean any registries, created by Lorenz on your computer.
The usually targeted registries of Windows machines are the following:
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
- HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
You can access them by opening the Windows registry editor and deleting any values, created by Lorenz there. This can happen by following the steps underneath:
Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.
Step 4: Boot Your PC In Safe Mode to isolate and remove Lorenz
Step 5: Try to Restore Files Encrypted by Lorenz.
Method 1: Use STOP Decrypter by Emsisoft.
Not all variants of this ransomware can be decrypted for free, but we have added the decryptor used by researchers that is often updated with the variants which become eventually decrypted. You can try and decrypt your files using the instructions below, but if they do not work, then unfortunately your variant of the ransomware virus is not decryptable.
Follow the instructions below to use the Emsisoft decrypter and decrypt your files for free. You can download the Emsisoft decryption tool linked here and then follow the steps provided below:
1 Right-click on the decrypter and click on Run as Administrator as shown below:
2. Agree with the license terms:
3. Click on "Add Folder" and then add the folders where you want files decrypted as shown underneath:
4. Click on "Decrypt" and wait for your files to be decoded.
Note: Credit for the decryptor goes to Emsisoft researchers who have made the breakthrough with this virus.
Method 2: Use data recovery software
Ransomware infections and Lorenz aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.
Simply click on the link and on the website menus on the top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.
Lorenz-FAQ
What is Lorenz Ransomware?
Lorenz is a ransomware infection - the malicious software that enters your computer silently and blocks either access to the computer itself or encrypt your files.
Many ransomware viruses use sophisticated encryption algorithms to make your files inaccessible. The goal of ransomware infections is to demand that you pay a ransom payment to get access to your files back.
What Does Lorenz Ransomware Do?
Ransomware in general is a malicious software that is designed to block access to your computer or files until a ransom is paid.
Ransomware viruses can also damage your system, corrupt data and delete files, resulting in the permanent loss of important files.
How Does Lorenz Infect?
Via several ways.Lorenz Ransomware infects computers by being sent via phishing emails, containing virus attachment. This attachment is usually masked as an important document, like an invoice, bank document or even a plane ticket and it looks very convincing to users.
Another way you may become a victim of Lorenz is if you download a fake installer, crack or patch from a low reputation website or if you click on a virus link. Many users report getting a ransomware infection by downloading torrents.
How to Open .Lorenz files?
You can't without a decryptor. At this point, the .Lorenz files are encrypted. You can only open them once they are decrypted using a specific decryption key for the particular algorithm.
What to Do If a Decryptor Does Not Work?
Do not panic, and backup the files. If a decryptor did not decrypt your .Lorenz files successfully, then do not despair, because this virus is still new.
Can I Restore ".Lorenz" Files?
Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .Lorenz files.
These methods are in no way 100% guaranteed that you will be able to get your files back. But if you have a backup, your chances of success are much greater.
How To Get Rid of Lorenz Virus?
The safest way and the most efficient one for the removal of this ransomware infection is the use a professional anti-malware program.
It will scan for and locate Lorenz ransomware and then remove it without causing any additional harm to your important .Lorenz files.
Can I Report Ransomware to Authorities?
In case your computer got infected with a ransomware infection, you can report it to the local Police departments. It can help authorities worldwide track and determine the perpetrators behind the virus that has infected your computer.
Below, we have prepared a list with government websites, where you can file a report in case you are a victim of a cybercrime:
Cyber-security authorities, responsible for handling ransomware attack reports in different regions all over the world:
Germany - Offizielles Portal der deutschen Polizei
United States - IC3 Internet Crime Complaint Centre
United Kingdom - Action Fraud Police
France - Ministère de l'Intérieur
Italy - Polizia Di Stato
Spain - Policía Nacional
Netherlands - Politie
Poland - Policja
Portugal - Polícia Judiciária
Greece - Cyber Crime Unit (Hellenic Police)
India - Mumbai Police - CyberCrime Investigation Cell
Australia - Australian High Tech Crime Center
Reports may be responded to in different timeframes, depending on your local authorities.
Can You Stop Ransomware from Encrypting Your Files?
Yes, you can prevent ransomware. The best way to do this is to ensure your computer system is updated with the latest security patches, use a reputable anti-malware program and firewall, backup your important files frequently, and avoid clicking on malicious links or downloading unknown files.
Can Lorenz Ransomware Steal Your Data?
Yes, in most cases ransomware will steal your information. It is a form of malware that steals data from a user's computer, encrypts it, and then demands a ransom in order to decrypt it.
In many cases, the malware authors or attackers will threaten to delete the data or publish it online unless the ransom is paid.
Can Ransomware Infect WiFi?
Yes, ransomware can infect WiFi networks, as malicious actors can use it to gain control of the network, steal confidential data, and lock out users. If a ransomware attack is successful, it could lead to a loss of service and/or data, and in some cases, financial losses.
Should I Pay Ransomware?
No, you should not pay ransomware extortionists. Paying them only encourages criminals and does not guarantee that the files or data will be restored. The better approach is to have a secure backup of important data and be vigilant about security in the first place.
What Happens If I Don't Pay Ransom?
If you don't pay the ransom, the hackers may still have access to your computer, data, or files and may continue to threaten to expose or delete them, or even use them to commit cybercrimes. In some cases, they may even continue to demand additional ransom payments.
Can a Ransomware Attack Be Detected?
Yes, ransomware can be detected. Anti-malware software and other advanced security tools can detect ransomware and alert the user when it is present on a machine.
It is important to stay up-to-date on the latest security measures and to keep security software updated to ensure ransomware can be detected and prevented.
Do Ransomware Criminals Get Caught?
Yes, ransomware criminals do get caught. Law enforcement agencies, such as the FBI, Interpol and others have been successful in tracking down and prosecuting ransomware criminals in the US and other countries. As ransomware threats continue to increase, so does the enforcement activity.
About the Lorenz Research
The content we publish on SensorsTechForum.com, this Lorenz how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific malware and restore your encrypted files.
How did we conduct the research on this ransomware?
Our research is based on an independent investigation. We are in contact with independent security researchers, and as such, we receive daily updates on the latest malware and ransomware definitions.
Furthermore, the research behind the Lorenz ransomware threat is backed with VirusTotal and the NoMoreRansom project.
To better understand the ransomware threat, please refer to the following articles which provide knowledgeable details.
As a site that has been dedicated to providing free removal instructions for ransomware and malware since 2014, SensorsTechForum’s recommendation is to only pay attention to trustworthy sources.
How to recognize trustworthy sources:
- Always check "About Us" web page.
- Profile of the content creator.
- Make sure that real people are behind the site and not fake names and profiles.
- Verify Facebook, LinkedIn and Twitter personal profiles.