Home > Ransomware > JokeFromMars Ransomware Remove and Restore .a19 .ap19 Files

JokeFromMars Ransomware Remove and Restore .a19 .ap19 Files

jokefrommars-files-encrypted-sensorstechforum-2-lockscreen-main-comAlso 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


Malware Removal Tool

User Experience Join our forum to Discuss JokeFromMars Ransomware.
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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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, adware-related problem, and restore your browser and computer system.

How did we conduct the research on JokeFromMars?

Please note that our research is based on independent investigation. We are in contact with independent security researchers, thanks to which we receive daily updates on the latest malware, adware, and browser hijacker definitions.
Furthermore, the research behind the JokeFromMars threat is backed with VirusTotal https://www.virustotal.com/gui/home/upload.
To better understand this online threat, please refer to the following articles which provide knowledgeable details.


1.Browser Redirect – What Is It?
2.Adware Is Malicious, and It Uses Advanced Techniques to Infect
3.The Thin Red Line Between Potentially Unwanted Programs and Malware
4.The Pay-Per-Install Affiliate Business – Making Millions out of Adware
5.Malicious Firefox Extensions Installed by 455,000 Users Blocked Updates

How to Remove JokeFromMars from Windows.

Step 1: Boot Your PC In Safe Mode to isolate and remove JokeFromMars


Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your PC with SpyHunter

Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter's malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria

1. Hold Windows key + R

2. The "Run" Window will appear. In it, type "msconfig" and click OK.

3. Go to the "Boot" tab. There select "Safe Boot" and then click "Apply" and "OK".
Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.

4. When prompted, click on "Restart" to go into Safe Mode.

5. You can recognise Safe Mode by the words written on the corners of your screen.

Step 2: Uninstall JokeFromMars and related software 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:

1. Hold the Windows Logo Button and "R" on your keyboard. A Pop-up window will appear.

2. In the field type in "appwiz.cpl" and press ENTER.

3. This will open a window with all the programs installed on the PC. Select the program that you want to remove, and press "Uninstall"
Follow the instructions above and you will successfully uninstall most 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:

1. Open the Run Window again, type "regedit" and click OK.

2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.

3. You can remove the value of the virus by right-clicking on it and removing it.

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: Scan for JokeFromMars with SpyHunter Anti-Malware Tool

1. Click on the "Download" button to proceed to SpyHunter's download page.

It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria.

2. After you have installed SpyHunter, wait for it to update automatically.


3. After the update process has finished, click on the 'Malware/PC Scan' tab. A new window will appear. Click on 'Start Scan'.


4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the 'Next' button.


If any threats have been removed, it is highly recommended to restart your PC.

Video Removal Guide for JokeFromMars (Windows).

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Get rid of JokeFromMars from Mac OS X.

Step 1: Uninstall JokeFromMars and remove related files and objects

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your Mac with SpyHunter for Mac
Keep in mind, that SpyHunter for Mac needs to purchased to remove the malware threats. Click on the corresponding links to check SpyHunter’s EULA and Privacy Policy

1.Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:

2. Find Activity Monitor and double-click it:

3.In the Activity Monitor look for any suspicious processes, belonging or related to JokeFromMars:

Tip: To quit a process completely, choose the “Force Quit” option.

4.Click on the "Go" button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.

5.In the Applications menu, look for any suspicious app or an app with a name, similar or identical to JokeFromMars. If you find it, right-click on the app and select “Move to Trash”.

6: Select Accounts, after which click on the Login Items preference.

Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to JokeFromMars. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.

7: Remove any left-over files that might be related to this threat manually by following the sub-steps below:

  • Go to Finder.
  • In the search bar type the name of the app that you want to remove.
  • Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
  • If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.

In case you cannot remove JokeFromMars via Step 1 above:

In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:

Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!

1: Click on "Go" and Then "Go to Folder" as shown underneath:

2: Type in "/Library/LauchAgents/" and click Ok:

3: Delete all of the virus files that have similar or the same name as JokeFromMars. If you believe there is no such file, do not delete anything.

You can repeat the same procedure with the following other Library directories:

→ ~/Library/LaunchAgents

Tip: ~ is there on purpose, because it leads to more LaunchAgents.

Step 2: Scan for and remove JokeFromMars files from your Mac

When you are facing problems on your Mac as a result of unwanted scripts and programs such as JokeFromMars, the recommended way of eliminating the threat is by using an anti-malware program. SpyHunter for Mac offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.

Click the button below below to download SpyHunter for Mac and scan for JokeFromMars:


SpyHunter for Mac

Video Removal Guide for JokeFromMars (Mac)

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Remove JokeFromMars from Google Chrome.

Step 1: Start Google Chrome and open the drop menu

Step 2:Move the cursor over "Tools" and then from the extended menu choose "Extensions"

Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.

Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Erase JokeFromMars from Mozilla Firefox.

Step 1: Start Mozilla Firefox. Open the menu window

Step 2: Select the "Add-ons" icon from the menu.

Step 3: Select the unwanted extension and click "Remove"

Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Uninstall JokeFromMars from Microsoft Edge.

Step 1: Start Edge browser.

Step 2: Open the drop menu by clicking on the icon at the top right corner.

Step 3: From the drop menu select "Extensions".

Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.

Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Remove JokeFromMars from Safari.

Step 1: Start the Safari app.

Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.

Step 3: From the menu, click on "Preferences".

stf-safari preferences

Step 4: After that, select the 'Extensions' Tab.


Step 5: Click once on the extension you want to remove.

Step 6: Click 'Uninstall'.

stf-safari uninstall

A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the JokeFromMars will be removed.

How to Reset Safari
IMPORTANT: Before resetting Safari make sure you back up all your saved passwords within the browser in case you forget them.

Start Safari and then click on the gear leaver icon.

Click the Reset Safari button and you will reset the browser.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Eliminate JokeFromMars from Internet Explorer.

Step 1: Start Internet Explorer.

Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'

Step 3: In the 'Manage Add-ons' window.

Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.

Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.

Remove Push Notifications caused by JokeFromMars from Your Browsers.

Turn Off Push Notifications from Google Chrome

To disable any Push Notices from Google Chrome browser, please follow the steps below:

Step 1: Go to Settings in Chrome.


Step 2: In Settings, select “Advanced Settings”:

advanced settings

Step 3: Click “Content Settings”:

Content Settings

Step 4: Open “Notifications”:


Step 5: Click the three dots and choose Block, Edit or Remove options:

Block, Edit or Remove

Remove Push Notifications on Firefox

Step 1: Go to Firefox Options.


Step 2: Go to “Settings”, type “notifications” in the search bar and click "Settings":


Step 3: Click “Remove” on any site you wish notifications gone and click “Save Changes”

remove push notifications firefox

Stop Push Notifications on Opera

Step 1: In Opera, press ALT+P to go to Settings.


Step 2: In Setting search, type “Content” to go to Content Settings.

content settings

Step 3: Open Notifications:


Step 4: Do the same as you did with Google Chrome (explained below):

three dots

Eliminate Push Notifications on Safari

Step 1: Open Safari Preferences.


Step 2: Choose the domain from where you like push pop-ups gone and change to "Deny" from "Allow".

JokeFromMars FAQ

What is JokeFromMars?

The JokeFromMars threat is adware or browser redirect virus. It may slow your computer down siginficantly and display advertisements. The main idea is for your information to likely get stolen or more ads to appear on your device.

The creators of such unwanted apps work with pay-per-click schemes to get your computer to visit risky or different types of websites that may generate them funds. This is why they do not even care what types of websites show up on the ads. This makes their unwanted software indirectly risky for your OS.

What are the symptoms of JokeFromMars?

There are several symptoms to look for when this particular threat and also unwanted apps in general are active:

Symptom #1: Your computer may become slow and has poor performance in general.

Symtpom #2: You have toolbars, add-ons or extensions on your web browsers that you don't remember adding.

Symptom #3: You see all types of ads, like ad-supported search results, pop-ups and redirects to randomly appear.

Symptom #4: You see installed apps on your Mac running automatically and you do not remember installing them.

Symptom #5: You see suspicious processes running in your Task Manager.

If you see one or more of those symptoms, then security experts reccomend that you check your computer for viruses.

What types of Unwanted Programs are there?

According to most malware researchers and cyber-security experts, the threats that can currently affect your Mac can be the following types:

  • Rogue Antivirus programs.
  • Adware.
  • Browser hijackers.
  • Clickers.
  • Fake optimizers.

What to do if I have a "virus" like JokeFromMars?

Do not panic! You can easily get rid of most adware or unwanted program threats by firstly isolating them and then removing them from your browser and computer. One reccomended way to do that is by using a reputable malware removal software that can take care of the removal automatically for you. There are many anti-malware apps out there that you can choose from. SpyHunter is one of the reccomended anti-malware apps, that can scan your computer for free and detect any viruses, tracking cookies and unwanted adware apps and eliminate them quickly. This saves time when compared to doing the removal manually.

How to secure my passwords and other data from JokeFromMars?

With few simple actions. First and foremost, it is imperative that you follow these steps:

Step 1: Find a safe computer and connect it to another network, not the one that your Mac was infected in.

Step 2: Change all of your passwords, starting from your e-mail passwords.

Step 3: Enable two-factor authentication for protection of your important accounts.

Step 4: Call your bank to change your credit card details (secret code, etc.) if you have saved your credit card for online shopping or have done online activiites with your card.

Step 5: Make sure to call your ISP (Internet provider or carrier) and ask them to change your IP address.

Step 6: Change your Wi-Fi password.

Step 7: (Optional): Make sure to scan all of the devices connected to your network for viruses and repeat these steps for them if they are affected.

Step 8: Install anti-malware software with real-time protection on every device you have.

Step 9: Try not to download software from sites you know nothing about and stay away from low-reputation websites in general.

If you follow these reccomendations, your network and all devices will become significantly more secure against any threats or information invasive software and be virus free and protected in the future too.

More tips you can find on our website, where you can also ask any questions and comment underneath the articles about your computer problems. We will try to respond as fast as possible.

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