Also known as MarsJoke ransomware, this malware is everything but a joke. It uses a strong AES-256 encryption algorithm to encode the files of an infected computer. The virus is deemed to be widespread and very dangerous, primarily because of the encryption algorithm which would take years to directly crack. Malware researchers however are constantly working on discovering flaws in the virus code by reverse engineering ransomware viruses. This is why instead of paying the ransom money of 0.7 or 1.1 BTC to the cyber-criminals who encrypted them and get your files back, it is strongly suggested to focus on removing the virus yourself instructions for which you can find below and trying to restore the files using alternative solutions while a decryptor is released.
Threat Summary
| Name | JokeFromMars |
| Type | Ransomware |
| Short Description | The ransomware encrypts files with AES-256 encryption cipher and asks a ransom payment of either 0.7 or 1.1 BTC for decryption. |
| Symptoms | Files are encrypted with either the .a19 or .ap19 file extensions and become inaccessible. A ransom note with instructions for paying the ransom is displayed. |
| Distribution Method | Spam Emails, Email Attachments, File Sharing Networks. |
| Detection Tool |
See If Your System Has Been Affected by malware
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Malware Removal Tool
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| Data Recovery Tool | Windows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive. |
JokeFromMars Ransomware – Spreading Capabilities
This virus is very specific, because it does not limit itself to targeting the average home user. The ones who created JokeFromMars ransomware must have a lot of bravery in them, because this virus targets government branches and facilities as well as educational facilities and may even target police building. Most of the attacks were reported on government buildings in the USA. Not only this, but there were also other organizations that were targeted by JokeFromMars, even though the infection of those type of organizations was much less than law enforcement and other important government branches – hospitals, telecommunication branches, insurance offices, production offices and others.
These type of targets may mean that the creators of JokeFromMars may have not limited themselves to only one method of spreading malware. The group behind this virus may have monitored the security of those organizations to target them using a tailor-made hacking technique consisting of different techniques and methods to slither malware – meaning that the organization of this group is very strict.
One method that may have been used to target organizations is the hands-on approach. Similar to the TV series,Mr. Robot, the attackers may drop a flash drive on a parking lot or anywhere where the employees of the organization may discover it. Everything else does it’s job as a consequence of the curiosity of the one who finds the flash drive. The flash drive may hack the computer of the employee and obtain privilege over important credentials, such as the working e-mail address username and password. Then, the attackers may use this e-mail and other network information to penetrate the inner network of the organization and send malicious files to other computers on the building. Depending on how good the attacker is at performing infections, he may send malicious e-mail attachments from the e-mail of the initially infected victim, increasing the credibility of the contents of the address. However, the attackers behind JokeFromMars may do the dirty job themselves by personally infecting all of the computers of the orginzation as a result of infecting a central server which gives them access to all the computers in the network as well as read and write permission.
Of course, there are many scenarios by which these attacks may have been conducted, but fact of the matter is that JokeFromMars ransomware is a very serious threat and all of the systems in the organization should be scanned for other malware as well, before being put into usage.
JokeFromMars Ransomware – More Information
As soon as it has infected a given system, JokeFromMars may drop multiple files, including an encryption module in several key Windows folders. The files may contain different names, for example:
Malware researchers at ProofPoint have detected the JokeFromMars virus to drop an executable, named sysmonitor.exe in one situation.
Once the files are dropped, the JokeFromMars virus may modify the Windows Registry Editor adding custom registry values that run the malicious executable when Windows boots uninterrupted. The following keys may b6e targeted:
→ 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\
After this is done, JokeFromMars may cause a system restart and display a fake error message. But what is particularly interesting is that upon system restart, the virus scans for and encrypts widely used types of files, like:
- Adobe documents.
- Microsoft Office documents.
- Images.
- Audio files.
- Videos.
- Other widely used file types.
Malware researchers at ESG report that the JokeFromMars virus has been pre-programmed to target the following file extensions for encryption:
→ .3gp, .7z, .apk, .avi, .bmp, .cdr, .cer, .chm, conf, .css, .csv, .dat, .db, .dbf, .djvu, .dbx, .docm, ,doc, .epub, .docx .fb2, .flv, .gif, .gz, .iso .ibooks,.jpeg, .jpg, .key, .mdb .md2, .mdf, .mht, .mobi .mhtm, .mkv, .mov, .mp3, .mp4, .mpg .mpeg, .pict, .pdf, .pps, .pkg, .png, .ppt .pptx, .ppsx, .psd, .rar, .rtf, .scr, .swf, .sav, .tiff, .tif, .tbl, .torrent, .txt, .vsd,.wmv, .xls, .xlsx, .xps, .xml, .ckp, zip, .java, .py, .asm, .c, .cpp, .cs, .js, .php, .dacpac, .rbw, .rb, .mrg, .dcx, .db3, .sql, .sqlite3, .sqlite, .sqlitedb, .psd, .psp, .pdb, .dxf, .dwg, .drw, .casb, .ccp, .cal, .cmx, .cr2.
When it has detected the files, JokeFromMars encrypts their code using a strong AES-256 encryption algorithm. After encryption the files can no longer be opened and may have either the .a19 or .ap19 file extension added to them, for example:
- Photo.jpg.a19
- New Text Document.txt.ap19
The JokeFromMars ransomware also manages to drop files in widely opened folders, like %Program Files%, %Documents and Settings% and others.
In this frame of mind, it’s ransom note files and a .bat file for decryption are dropped in those folders:
- !!! For Decrypt !!!.txt
- !!! Readme For Decrypt !!!.txt
- ReadMeFilesDecrypt!!!.txt
The ransom note belonging to JokeFromMars is the following:
Your personal files are encrypted !!!
Your documents, photos, databases and other important files have been encrypted with strongest encryption algorithm AES-256 and unique key, generated for this computer.
Private decryption key is stored on a secret Internet server and nobody can decrypt your files until you pay and obtain the decryption key. If you see the main locker window follow the instructions on the locker. Otherwise, it’s seems that you or you antivirus deleted the locker program. Now you have the last chance to decrypt your files;
Open site hxxp://rd7v7mhidgrulwqg.onion.link or hxxp://rd7v7mhidgrulwqg.torlink.co or hxxp://rd7v7mhidgrulwqg.onion.to in your browser. They are public gates to the secret server.
If you have problems with gates, use direct connection:
1.Download Tor Browser from hxxp://torproject.org/
2.In the Tor Browser open the rd7v7mhidgrulwqg.onion
Note that this server is available via Tor Browser only. Retry in 1 hour if site is not reachable.
3.Copy and paste the following public key in the input form on server. Avoid misprints.
4.Follow the instructions on the server.
These instructions are also saved to the file named ReadMeFilesDecrypt!!!.txt in Documents folder. You can open it and use copy-paste for address and key.
Malware researchers feel convinced that whoever wrote this ransomware virus has had a lot of experience with such threats, since the ransom notes used, are not only reported to resemble the infamous CTB Locker ransomware but are also reported to be written in a very detailed manner with a very good quality as well.
Not only this, but the virus creates extra difficulty for users by displaying a screen-lock with the detailed instructions for decryption.
JokeFromMars Ransomware Conclusion, Removal and File Restoration Alternatives
As a bottom line, this is a very serious threat and it is not to be taken lightly. It is strongly advisable not to pay any ransom money to the cyber-criminals associated with this virus because it is no guarantee that you will get your files back.
To remove JokeFromMars ransomware it is strongly advisable that you follow the removal instructions we have prepared for you underneath. They are methodologically designed to help locate and delete the files manually. However, if you are having difficulties to go around the lock screen, we recommend booting your computer in safe mode and scanning it with an advanced anti-malware tool to help automatically get it rid of the JokeFromMars threat. For organizations, recommendations are to focus on the central server and scan for malware there after which to make your way through all the infected computers in the organization.
In case the JokeFromMars virus has caused damages to your organization, it is strongly advisable to immediately disconnect all devices between them and from the web to isolate this threat. Then it is recommended to backup the encrypted files, clean the devices of malware and try alternative methods to restore the files, like the ones in step “ 2.Restore files encrypted by JokeFromMars” below while a researchers come up with a free solution. We will be on the lookout in the meantime and update this article as soon as official free working decryptor is discovered.
Ventsislav Krastev
Ventsislav is a cybersecurity expert at SensorsTechForum since 2015. He has been researching, covering, helping victims with the latest malware infections plus testing and reviewing software and the newest tech developments. Having graduated Marketing as well, Ventsislav also has passion for learning new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management, Network Administration and Computer Administration of System Applications, he found his true calling within the cybersecrurity industry and is a strong believer in the education of every user towards online safety and security.
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Step 1: Scan for JokeFromMars with SpyHunter Anti-Malware Tool
Ransomware Automatic Removal - Video Guide
Step 2: Uninstall JokeFromMars 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 JokeFromMars 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 JokeFromMars 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 JokeFromMars
Step 5: Try to Restore Files Encrypted by JokeFromMars.
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 JokeFromMars 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.
JokeFromMars-FAQ
What is JokeFromMars Ransomware?
JokeFromMars 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 JokeFromMars 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 JokeFromMars Infect?
Via several ways.JokeFromMars 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 JokeFromMars 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 .JokeFromMars files?
You can't without a decryptor. At this point, the .JokeFromMars 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 .JokeFromMars files successfully, then do not despair, because this virus is still new.
Can I Restore ".JokeFromMars" Files?
Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .JokeFromMars 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 JokeFromMars 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 JokeFromMars ransomware and then remove it without causing any additional harm to your important .JokeFromMars 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 JokeFromMars 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 JokeFromMars Research
The content we publish on SensorsTechForum.com, this JokeFromMars 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 JokeFromMars 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.