New file encryption malware named Dr.Jimbo has been spotted to encode user data adding the .encrypted file extension to the encoded files. The ransomware uses a sophisticated encryption algorithm which changes the hex code of the files, making them inaccessible. It is not likely that Dr. Jimbo ransomware will spread on a massive scale in the future. But in case you have been infected with this ransom virus, we strongly advise you to read this article to learn how to remove this virus and try restoring your files without having to pay 2 BTC, which is demanded by the cyber-criminals of Dr.Jimbo.
Threat Summary
| Name | Dr.Jimbo |
| Type | Ransomware |
| Short Description | The ransomware encrypts files with an immensely strong cipher and asks a ransom payment for decryption. |
| Symptoms | Files are enciphered and become inaccessible. A text file with ransom instructions is added. |
| 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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| User Experience | Join our forum to discuss Jimbo 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. |
Dr.Jimbo – How Does It Infect Users
To confirm a successful infection, Dr.Jimbo Ransomware has to successfully connect to the malicious server of the cyber-criminals. To do this, it may use a malicious executable dropped by a Trojan.Downloader, which can be masked as an:
- E-mail attachment.
- Fake setups of programs.
- Fake game cracks or key generators.
In addition to that other types of attacks may be used, in correlation with malicious URLs being posted online or in spam messages:
- Exploit kit attacks.
- JavaScript attacks.
Dr.Jimbo – More About The Ransomware
After it slips past the defenses of the victim PC, most likely via using obfuscators, Dr.Jimbo may create malicious files in some of the following Windows folders:
- %AppData%
- %Roaming%
- %Desktop%
- %Temp%
- %User’s Profile%
After creating the malicious files, Dr.Jimbo ransomware might as well create registry entries in order to make one or more files run every time Windows has started and change the wallpaper of the infected computer to one with a ransom note. Here are some of the probably targeted registry keys by Dr.Jimbo:
→ 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
The encryption process used by Dr.Jimbo may be taken from other ransomware viruses. As soon as it is activated the ransomware may start scanning the computer for different file types of commonly used files, for example:
Encrypted files are no longer accessible and the file extension .encrypted is added to them. This very file extension has been reported to be seen with other ransomware viruses, like Crypren and Apocalypse viruses.
The encrypted files with such extension added to them may look like the following example:
The encryption cipher(algorithm) used to encrypt those files may be one of the following:
- RSA
- AES
- XOR
After encryption, the ransomware drops the following file so that the user can see it:
The file states the following ransom message:
All your data was Encrypted!
If you wanna get it back contact via email:
Dr.jimbo@bk.ru
WARNING: If you don’t contact next 48 hours, then all DATA will be damaged unrecoverably!! !
The domain of the malicious e-mail address strongly suggests that there may be Romanian involvement in the development or the usage of this virus to make a profit at the user’s expense. However, it may be a trick by the cyber-criminals to simply mask their real identity.
The demanded payoff amount by Dr.Jimbo ransomware is reported to be in the range of 2 to 3 BitCoins – a hefty sum.
Also, even though it is not confirmed, Dr.Jimbo ransomware may delete backups and file history from your computer, using the vssadmin command with one of its following parameters:
Specifies the volume for which the shadow copy is to be deleted.
/oldest – Deletes the first shadow records.
/all – Eradicates all copies of a volume, for example, C:
/shadow={ID} – Removes shadow copy by identification.
/quiet – A mode allowing it to run unnoticed.
Source: technet.microsoft.com
Remove Dr.Jimbo Ransomware and Try to Restore Encrypted Files
To delete Dr.Jimbo Ransomware, we suggest you follow the step by step instructions which we have provided for you after this article. Since the ransomware may create different files and various malicious registry entries, experts advise eradicating it automatically with an advanced anti-malware program for maximum effectiveness.
To try and restore your files, direct decryption will not work. You can, however, try some of the methods we have prepared in step “3.Restore Files Encrypted by Dr.Jimbo” below. They are not 100 percent effective but if you are lucky, haven’t reinstalled Windows or have backups, you may restore some of your files.
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.
Follow Me:
- Guide 1: How to Remove Dr.Jimbo from Windows.
- Guide 2: Get rid of Dr.Jimbo on Mac OS X.
- Guide 3: Remove Dr.Jimbo in Google Chrome.
- Guide 4: Erase Dr.Jimbo from Mozilla Firefox.
- Guide 5: Uninstall Dr.Jimbo from Microsoft Edge.
- Guide 6: Remove Dr.Jimbo from Safari.
- Guide 7: Eliminate Dr.Jimbo from Internet Explorer.
- Guide 8: Disable Dr.Jimbo Push Notifications in Your Browsers.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups
How to Remove Dr.Jimbo from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove Dr.Jimbo
Step 2: Uninstall Dr.Jimbo 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:
Follow the instructions above and you will successfully uninstall most programs.
Step 3: Clean any registries, created by Dr.Jimbo 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 Dr.Jimbo 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.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups
Get rid of Dr.Jimbo from Mac OS X.
Step 1: Uninstall Dr.Jimbo and remove related files and objects
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
- 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 Dr.Jimbo 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:
You can repeat the same procedure with the following other Library directories:
→ ~/Library/LaunchAgents
/Library/LaunchDaemons
Tip: ~ is there on purpose, because it leads to more LaunchAgents.
Step 2: Scan for and remove Dr.Jimbo files from your Mac
When you are facing problems on your Mac as a result of unwanted scripts and programs such as Dr.Jimbo, 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.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups
Remove Dr.Jimbo 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 Dr.Jimbo 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 Dr.Jimbo 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 Dr.Jimbo 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".
Step 4: After that, select the 'Extensions' Tab.
Step 5: Click once on the extension you want to remove.
Step 6: Click 'Uninstall'.
A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the Dr.Jimbo will be removed.
Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups
Eliminate Dr.Jimbo 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 Dr.Jimbo 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”:
Step 3: Click “Content Settings”:
Step 4: Open “Notifications”:
Step 5: Click the three dots and choose Block, Edit or Remove options:
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”
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.
Step 3: Open Notifications:
Step 4: Do the same as you did with Google Chrome (explained below):
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".
