Artemis Ransomware Virus
Artemis is the name given to a ransomware infection known to be using the .ultimate extension for files it encodes.
Unfortunately, if it hits your computer system, it will lock all of your valuable files and request a ransom payment for their recovery.
Infection with the Artemis ransomware virus leads to serious system damage because of the many changes that start to control the way your operating system works. The system security is disrupted which means it is extremely vulnerable to additional malware infections.
Find more information about Artemis virus as well as a step-by-step removal of its malicious files. The steps below will also show you how to potentially recover encrypted .ultimate files.
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Artemis Ransomware Summary
Name | Artemis |
Type | Ransomware, Cryptovirus |
Short Description | A data locker ransomware designed to corrupt computer operating systems, encrypt valuable personal fles and extort a ransom fee. |
Symptoms | All important files are locked and renamed with a string of extensions that ends with the extension .ultimate Ransom message popups on screen to request a ransom payment. |
Ransom Note | ReadMe-[victim’s_ID].txt |
Distribution Method | Spam Emails, Email Attachments, Corrupted Websites |
Detection Tool |
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Artemis Ransomware – Distribution and Impact
Artemis is a data locker ransomware developed to encrypt personal files stored on computers it infects and append the extension .ultimate to their names.
The threat has one main goal and it is to supports cybercriminals’ operations. That’s why the moment it finishes the attack it drops a ransom note that provides instructions on how victims are supposed to act if they want to get back their locked files.
The infection may be lurking in the wild by being disguised as a fake software installer, a spam email that features an attachment or form of a clickable link, a phishing page, a malicious advert, an online scam, etc.
As soon as the Artemis ransomware virus runs on a PC, it initiates various malicious operations that help it to evade active security measures and continue harming other system parts. When this cryptovirus obtains permanent access to the infected system, it starts misusing system functionalities to perform additional malicious operations like data harvesting, installation of more malicious apps, and encryption of target data.
.ultimate Virus Files
To encrypt personal files, Artemis virus launches a cipher module that scans predefined system locations for target types of files and then encodes them by using a strong cipher algorithm like AES.
Encrypted files are left completely inaccessible. They share similarities in the changes of their names. All files are marked with three strange suffixes – victim’s ID number, e-mail address used by hackers (UltimateHelp@techmail.info) and .ultimate extension.
Sadly, at this point hackers are the only ones who possess a decryption tool for .ultimate files. They try to blackmail victims to pay a ransom fee if they want to obtain the tool and decrypt corrupted files. Below you can see the content of the ransom message (ReadMe-[victim’s_ID].txt) that appears in the end of the infection process:
!!! All your files encrypted !!!
You Have to Pay For The Restore
To Decrypt (Restore) them send e-mail to this address: UltimateHelp@techmail.info
If we don’t answer in 24h., send e-mail to this address: UltimateHelp@keemail.me
Your Unique ID : –
We know that you need to restore encrypted files but we recommend that you refrain from transferring money to cybercriminals. Otherwise, you risk losing both your valuable files and money.
For the sake of your security, it is advisable to clean your infected computer from present malicious files and consider the help of alternative data recovery methods.
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Remove Artemis Ransomware Virus
The complex code of the so-called Artemis virus damages both essential system settings and valuable data. Hence, the only way to use your infected computer in a secure manner is to first remove all malicious files and objects created by the ransomware and then install a reliable anti-malware tool. If you want to speed up the removal process and ensure that the infected system is clean from any present malware, you can directly download and install the anti-malware tool presented in the guide below.
When trying to restore .ultimate files with the alternative methods we listed in the guide, do not forget to first create copies of the encoded files and store them on an external drive.
- Step 1
- Step 2
- Step 3
- Step 4
- Step 5
Step 1: Scan for Artemis Ransomware with SpyHunter Anti-Malware Tool
Ransomware Automatic Removal - Video Guide
Step 2: Uninstall Artemis Ransomware 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:
![delete ransomware from windows step 1](https://cdn.sensorstechforum.com/wp-content/uploads/2019/06/1-step-remove-virus-sensorstechforum-com.jpg)
![delete ransomware from windows step 2](https://cdn.sensorstechforum.com/wp-content/uploads/2020/10/Run-Remove-Uninstal-pop-up-adware-hijacker-virus-sensorstechforum-2.jpg)
![delete ransomware from windows step 3](https://cdn.sensorstechforum.com/wp-content/uploads/2020/10/Run-Remove-Uninstal-pop-up-adware-hijacker-virus-sensorstechforum-3.jpg)
Step 3: Clean any registries, created by Artemis Ransomware 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 Artemis Ransomware there. This can happen by following the steps underneath:
![delete ransomware virus registries step 1](https://cdn.sensorstechforum.com/wp-content/uploads/2019/06/5-step-remove-a-virus-sensorstechforum-com.jpg)
![delete ransomware virus registries step 2](https://cdn.sensorstechforum.com/wp-content/uploads/2019/06/6-step-remove-virus-sensorstechforum-com.jpg)
![delete ransomware virus registries step 3](https://cdn.sensorstechforum.com/wp-content/uploads/2019/06/7-step-remove-virus-sensorstechforum-com.jpg)
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 Artemis Ransomware
![remove ransomware in safe mode step 1](https://cdn.sensorstechforum.com/wp-content/uploads/2019/06/1-step-remove-virus-sensorstechforum-com.jpg)
![remove ransomware in safe mode step 2](https://cdn.sensorstechforum.com/wp-content/uploads/2019/06/2-step-remove-virus-sensorstechforum-com.jpg)
![remove ransomware in safe mode step 3](https://cdn.sensorstechforum.com/wp-content/uploads/2019/06/3-step-remove-virus-sensorstechforum-com.jpg)
![remove ransomware in safe mode step 4](https://cdn.sensorstechforum.com/wp-content/uploads/2019/06/4-step-remove-virus-sensorstechforum-com.jpg)
![remove ransomware in safe mode step 5](https://cdn.sensorstechforum.com/wp-content/uploads/2020/10/windows-safe-mode-running.jpg)
Step 5: Try to Restore Files Encrypted by Artemis Ransomware.
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 Artemis Ransomware 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.
Artemis Ransomware-FAQ
What is Artemis Ransomware Ransomware?
Artemis Ransomware 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 Artemis Ransomware 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 Artemis Ransomware Infect?
Via several ways.Artemis Ransomware 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 Artemis Ransomware 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 .Artemis Ransomware files?
You can't without a decryptor. At this point, the .Artemis Ransomware 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 .Artemis Ransomware files successfully, then do not despair, because this virus is still new.
Can I Restore ".Artemis Ransomware" Files?
Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .Artemis Ransomware 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 Artemis Ransomware 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 Artemis Ransomware ransomware and then remove it without causing any additional harm to your important .Artemis Ransomware 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 Artemis Ransomware 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 Artemis Ransomware Research
The content we publish on SensorsTechForum.com, this Artemis Ransomware 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 Artemis Ransomware 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.
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