In this article, you will find more information about Chaos ransomware as well as a step-by-step guide on how to remove malicious files from the infected system and how to potentially recover encrypted files.
Chaos Ransomware Virus
All your valuable files are locked and renamed with strange extensions consisting of four random alphanumerical combinations? Your PC has been infected by a strain of Ryuk ransomware. As a typical data locker, Chaos ransomware interferes with essential system settings, encrypts personal files, and extorts a ransom fee from its victims. Currently, the threat may be lurking across the web in active spread test campaigns. Its malicious payload file may land on PCs as a fake software update, torrent file, software package, email attachment, advertisement, or link on social media post. The latest news reveals that the malware could be set to operate as a data wiper.
Chaos Virus Summary
| Name | Chaos also known as Generic.Ransom.HydraCrypt.F940D4B4, Trojan.TR/ATRAPS.Gen, HEUR:Trojan.MSIL.Fsysna.gen |
| Type | Ransomware, Cryptovirus |
| Malicious Extension | Random different suffix of four alpha-numeric symbols for each encrypted file. |
| Ransom Note | read_it.txt |
| Short Description | A data locker ransomware designed to damage computer systems and encrypt valuable personal fles. |
| Symptoms | Important files are locked and a ransom message insists on a payment for their recovery. |
| Distribution Method | Spam Emails, Email Attachments, Softtware Packages |
| Detection Tool |
See If Your System Has Been Affected by malware
Download
Malware Removal Tool
|
Chaos Malware – Update
Chaos is a newly developed malware that is expected to be massively released into the wild soon. Iterations of the threat had been probably released in a test campaign against a small group of people. Chaos malware is still under construction. It is noteworthy that the threat is advertised as ransomware but analysis shows it’s closer to the characteristics of a wiper.
Chaos Ransomware – Distribution and Impact
The so-called Chaos ransomware is a newly discovered cryptovirus, strain of the infamous RYUK ransomware. Similar to other Ryuk variants this threat can be released in campaigns that aim to deliver it on target devices with the help of shady mechanisms. Malspam, malvertising, freeware installers, fake software update notifications, and corrupted web pages may be utilized. The most preferred spread method is believed to be malspam as it could spread the threat on a large scale. Massive email spam campaigns are likely to be targeting computer users worldwide.
The greedy and heartless criminals behind Ryuk Ransomware have been reported to launch campaigns against hospitals even when such organizations are extremely busy since the Coronavirus pandemic emerged. The virus has even received an important update in March. It was equipped with a new work-like capability that allows the ransomware to spread across compromised networks.
What happens when the Chaos ransomware runs on a computer system is a complex attack of a few stages. By executing a long sequence of malicious processes, the ransomware evades detection, misuses main system functionalities, and eventually encodes valuable personal files.
As a part of the RYUK ransomware family, the Chaos virus encrypts target files by utilizing a biult-in cipher module that is programmed to transform target files with a sophisticated algorithm. The Chaos Ryuk virus is likely to target the most common user data:
- Documents;
- Databases;
- Multimedia Files;
- Archives;
- Backups;
- Restore Points & System Data.
Due to changes applied to files’ original code, encoded files remain inaccessible until their code is reverted back to its original state. This version of the ransomware appends a different extension on each encrypted file. It adds a string of a few random characters to the names of all encrypted files.
Cybercriminals who stand behind Chaos ransomware attacks aim to blackmail victims into paying a ransom fee for a decryption tool. Their demands are presented by a ransom note (read_it.txt) which states the following:
—-> Chaos is multi language ransomware. Translate your note to any language <---- All of your files have been encrypted Your computer was infected with a ransomware virus. Your files have been encrypted and you won't be able to decrypt them without our help.What can I do to get my files back?You can buy our special decryption software, this software will allow you to recover all of your data and remove the ransomware from your computer.The price for the software is $1,500. Payment can be made in Bitcoin only. How do I pay, where do I get Bitcoin? Purchasing Bitcoin varies from country to country, you are best advised to do a quick google search yourself to find out how to buy Bitcoin. Many of our customers have reported these sites to be fast and reliable: Coinmama - hxxps://www.coinmama.com Bitpanda - hxxps://www.bitpanda.com Payment informationAmount: 0.1473766 BTC Bitcoin Address: bc1qw0ll8p9m8uezhqhyd7z459ajrk722yn8c5j4fg
Files encrypted by Chaos ransomware are impossible to decrypt without the right decryption software. That tool costs $1,500 (or 0.1473766 BTC). Money transfers are accepted in Bitcoin only. If you pay the ransom and then start waiting for the decryption software that will encrypt your files, you can wait forever. There is never a guarantee that hackers will act as promised. That’s why we recommend that you refrain from transferring money to cybercriminals’ wallets.
For the sake of your security, it is advisable to uninstall Chaos ransomware from the operating system and consider the help of alternative data recovery methods.
Remove Chaos Virus (Ryuk Ransomware)
The so-called Chaos ransomware virus is a threat with highly complex code that heavily damages both essential system settings and valuable data. So the only way to use your infected system securely again is to remove all malicious files and objects created by the ransomware. For this purpose, you could follow our step-by-step removal guide.
In the event that you want to attempt to restore encrypted files with the help of alternative data recovery methods, do check step four – Try to Restore files encrypted by Chaos virus. We remind you to back up all encrypted files to an external drive before the recovery process.
Gergana Ivanova
Highly motivated writer with 5+ years of experience writing for ransomware, malware, adware, PUPs, and other cybersecurity-related issues. As a writer, I strive to create content that is based on thorough technical research. I find joy in the process of creating articles that are easy to understand, informative, and useful. Follow me on Twitter (@IRGergana) for the latest in the field of computer, mobile, and online security.
Follow Me:
- Step 1
- Step 2
- Step 3
- Step 4
- Step 5
Step 1: Scan for Chaos Virus with SpyHunter Anti-Malware Tool
Ransomware Automatic Removal - Video Guide
Step 2: Uninstall Chaos Virus 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:
Follow the instructions above and you will successfully delete most unwanted and malicious programs.
Step 3: Clean any registries, created by Chaos Virus 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 Chaos Virus there. This can happen by following the steps underneath:
Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.
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 Chaos Virus
Step 5: Try to Restore Files Encrypted by Chaos Virus.
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 Chaos Virus 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.
Chaos Virus-FAQ
What is Chaos Virus Ransomware?
Chaos Virus 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 Chaos Virus 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 Chaos Virus Infect?
Via several ways.Chaos Virus 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 Chaos Virus 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 .Chaos Virus files?
You can't without a decryptor. At this point, the .Chaos Virus 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 .Chaos Virus files successfully, then do not despair, because this virus is still new.
Can I Restore ".Chaos Virus" Files?
Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .Chaos Virus 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 Chaos Virus 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 Chaos Virus ransomware and then remove it without causing any additional harm to your important .Chaos Virus 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 Chaos Virus 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 Chaos Virus Research
The content we publish on SensorsTechForum.com, this Chaos Virus 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 Chaos Virus 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.