The .KRONOS virus is a ransomware that is currently set against target end users on a global scale. There is no information available about the hacking group behind it. It is believed to be a new iteration of the famous ransomware family. This is one of the reasons why we believe that the hackers are experienced.
Once the .KRONOS virus has started it will execute its built-in sequence of dangerous commands. Depending on local conditions or the specific hacker instructions various actions will take place. The file encryption will begin after them — the encrypting component will use a built-in list of target file type extensions. In the end the victim files will be renamed with the .KRONOS extension.
|The ransomware encrypts files on your computer machine and demands a ransom to be paid to allegedly restore them.
|The ransomware will blackmail the victims to pay them a decryption fee. Sensitive user data may be encrypted by the ransomware code.
|Spam Emails, Email Attachments
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March 2020 marks the beginning of a new string of attacks for Ouroboros Ransomware variants and .Kronos is one of these variants. As new versions like .vash Virus keep popping up it shows that there is activity related to the ransomware.
In December 2019 a new release of this virus has been detected bearing a whole new ransom note. Not a lot of information is known about the hacking group behind it. It is very possible that the new configuration is made by a new hacking group that is not related to the original one.
Details about the new release were posted before the massive worldwide attack happened. This shows that virus has been tested in a limited campaign against only a certain group of users. The available information shows that the virus sample has the ability to process a wide range of files in different locations, not necessarily only during the encryption phase. This is related to components and functions of the virus which can make it very difficult to easily recover the computers.
A common malicious action which is executed by such ransomware is to detect and remove sensitive data — these are files which are not to be encrypted, but to be directly removed. Most of them are backups and Shadow Volume Copies. The consequences are that this is done in order to make it much more difficult to effectively remove the threats.
Like the previous versions this threat will also launch an extensive data gathering component which can hijack both personal information and machine data. All values will be processed by a special algorithm that will generate an unique ID that is to be assigned to every infected computer. When the encryption is run the target user files will be processed following the already well-known built-in list of target file type extensions. However the formula for renaming of the victim files will be the following: Unlockme501@protonmail.ch.ID.KRONOS. To differentiate from the previous versions a new ransom note will be displayed under the form of a lockscreen.
.KRONOS Virus – Spread and Impact
What’s dangerous about the .KRONOS virus is that it can run a multitude of malware modules. Depending on the local conditions or the hacker instructions they can change. Common examples are the following:
- Information Gathering — This is a dangerous module which can be programmed to hijack a lot of data including personal information and machine metrics. The created profile can be used to conduct various crimes including financial abuse and identity theft. This module is also responsible for the creation of a complete profile based on the hardware parts. This profile can then be used by an algorithm that will generate an unique ID just for this host.
- Security Apps Bypass — Using the extracted information the criminals can scan the system for any security applications and services that can block the proper execution of the malware. This includes the likes of anti-virus programs, sandbox environments, firewalls, virtual machine hosts and etc.
- Persistent Installation — The .KRONOS virus can be installed as a persistent threat which is done by modifying the boot options and Windows Registry entries. Once this is done the virus will start automatically when the computer is started. It can also disable access to the recovery options which are commonly used in manual recovery guides.
- Windows Registry Changes — The main virus engine can edit existing values in the Windows Registry or create new ones specific for the malware. This can result in the inability to run certain applications, services or processes properly. Other consequences include performance issues, errors and other problems.
The .KRONOS virus can be spread using various techniques. One of the main ones relies on utilizing various phishing techniques which can include the creation of email messages and special web sites. They are usually hosted on similar sounding domain names in order to manipulate them into believing that they are accessing safe content.
The sites can be of all popular types: landing pages, login prompts, home pages and etc. When they interact with the shown contents the virus can be directly relayed via scripts or the users can download malware payloads. They can take many forms, for example one of the common ones is the creation of infected documents. They can be of all popular formats and once opened by the users a prompt will be displayed to them. If they allow the scripts to be run the virus will be deployed. The other popular method is to embed the installation instructions into application installers of popular software. They are commonly downloaded by end users and the criminals choose appropriate software:
- Productivity and Office Apps
- Creativity Suites
- System Utilities
- Computer Games
All of the malware files can be distributed over file-sharing networks and apps including BitTorrent. They are popular for spreading both pirate and legitimate files.
.KRONOS Virus – What Does It Do?
.KRONOS Virus could spread its infection in various ways. A payload dropper which initiates the malicious script for this ransomware is being spread around the Internet. .KRONOS Virus might also distribute its payload file on social media and file-sharing services. Freeware which is found on the Web can be presented as helpful also be hiding the malicious script for the cryptovirus. Read the tips for ransomware prevention from our forum.
.KRONOS Virus is a cryptovirus that encrypts your files and shows a window with instructions on your computer screen. The extortionists want you to pay a ransom for the alleged restoration of your files. The main engine could make entries in the Windows Registry to achieve persistence, and interfere with processes in Windows.
The .KRONOS Virus is a crypto virus programmed to encrypt user data. As soon as all modules have finished running in their prescribed order the lockscreen will launch an application frame which will prevent the users from interacting with their computers. It will display the ransomware note to the victims.
You should NOT under any circumstances pay any ransom sum. Your files may not get recovered, and nobody could give you a guarantee for that.
The .KRONOS Virus cryptovirus could be set to erase all the Shadow Volume Copies from the Windows operating system with the help of the following command:
→vssadmin.exe delete shadows /all /Quiet
If your computer device was infected with this ransomware and your files are locked, read on through to find out how you could potentially restore your files back to normal.
Remove .KRONOS Virus
If your computer system got infected with the .KRONOS Files ransomware virus, you should have a bit of experience in removing malware. You should get rid of this ransomware as quickly as possible before it can have the chance to spread further and infect other computers. You should remove the ransomware and follow the step-by-step instructions guide provided below.
What is KRONOS virus Ransomware?
KRONOS 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 KRONOS 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 KRONOS virus Infect?
Via several ways.KRONOS 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 KRONOS 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 .KRONOS virus files?
You can't without a decryptor. At this point, the .KRONOS 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 .KRONOS virus files successfully, then do not despair, because this virus is still new.
Can I Restore ".KRONOS virus" Files?
Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .KRONOS 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 KRONOS 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 KRONOS virus ransomware and then remove it without causing any additional harm to your important .KRONOS 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 KRONOS 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.
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 KRONOS virus Research
The content we publish on SensorsTechForum.com, this KRONOS 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.
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.
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