Jaff Ransomware is a critical malware that encrypts certain files on targeted computer. Once this virus is run on the system, it immediately infects files and appends the extension with .Jaff. Ransomware hunters claim that this malware is very much identical to infamous Locky Ransomware in so many ways. However, Jaff may have a slightly different code and was written in C and uses a custom packer to conceals its presence. In addition, Jaff demands huge sum of money before one can regain access to their files. A whooping 2 Bitcoins or around 3,800 US Dollars is demanded from its victims.
To inform user about the attack, Jaff will place HTML file, Text file, and Image file that serves as a notice. ReadMe.htm, ReadMe.txt, and ReadMe.bmp contains instructions, contact email address, and payment amount. Here are some excerpts:
Jaff Decryptor System
Files are encrypted!
To decrypt files you need to obtain private key.
The only copy of the private key, which will allow you to decrypt your files is located on a secret server in the internet…
As you can see, this attack was made solely to generate money by making your precious files unusable. You must pay the attacker before you can restore the files to its original form. With recent similar attacks, it is evident that cyber criminals are demanding huge amount of money. In the case of Jaff, ransom amount is unspecified. Attackers demand will be based on how soon the victim will contact them.
First discovered and Tweeted by @Siri_urz, Jaff Ransomware, also changes the wallpaper as shown in the image above. Sadly, there is still no decryption key for this type of virus.
How to Remove Jaff Ransomware
Ransomware files are placed deeply into the system and on various locations, thus, thorough scanning is vital to totally remove Jaff Ransomware virus. Aside from our suggested tool, you may also run your own security program.
Though affected files may be impossible to decrypt due to complexity of the encryption, you can still try recovery method like Shadow Explorer or Previous Version as described below.
Stage 1: Scan the Computer with ESET Rogue Application Remover (ERAR)
1. Download the free scanner called ESET Rogue Application Remover.
Download Link for ERAR (this will open a new window)
2. Choose appropriate version for your Windows System. Save the file to a convenient location, preferably on Desktop.
3. After downloading the file, Windows will prompt that download has completed. Click Run to start the program. Another option is to browse the location folder and double click on the file ERARemover_.exe.
4. On ESET Rogue Application Remover SOFTWARE LICENSE TERMS, click Accept to continue.
5. The tool will start scanning the computer. It will prompt when it finds Jaff Ransomware virus and other malicious entities. Follow the prompt to proceed with the removal.
Stage 2: Double-check for Jaff Ransomware’s leftover with Microsoft’s Malicious Software Removal Tool
1. Download the free scanner called Malicious Software Removal Tool.
Malicious Software Removal Tool Download Link (this will open a new window)
2. The tool automatically checks the operating system and suggest appropriate download version. Click on Download button to begin. Save the file to a convenient location, preferably on Desktop.
3. After downloading the file, Windows will prompt that download has completed. Click Run to start scanning for Jaff Ransomware. Another option is to browse the location folder and double click on the file to run.
4. The tool will display Welcome screen, click Next. Please note the message “This tool is not a replacement for an antivirus product.” You must understand that this program is made specifically to find and remove malware, viruses, Trojans, and other harmful elements on the computer. It was not designed to protect the computer.
5. Next, you will see Scan Type. Please choose Full Scan to ensure that all Jaff Ransomware virus entities and other harmful files left on the computer will be found and removed. For advanced computer user, you can opt for Customized Scan, if there are other drives or folders you wanted to include in this scan.
6. Full scan may take a while, please wait for Malicious Software Removal Tool to complete the tasks. However, you may cancel the scan anytime by clicking on the Cancel button.
7. After scanning, the tool will reveal all identified threats. There may be other threats that our first scan fails to detect. Please remove/delete all detected items.
8. When removal procedure is complete, you may now close Malicious Software Removal Tool. We hope that Jaff Ransomware have been completely deleted from the computer. Please restart Windows to proceed with the normal operation.
Stage 3 : Unlocking files with Jaff Decryptor
Tools that may decrypt files infected by Jaff is not yet available at this time. We will update this section once the tool is on hand. In the meantime, please try the options below.
Option 1: Windows Previous Version Tool
Windows Vista and Windows 7 have a feature called Previous Versions. However, this tool is only usable if restore point was made prior to Jaff Ransomware virus infection. To use this tool and recover files affected by the virus, please follow these steps:
1. Open My Computer or Windows Explorer.
2. Right-click on the affected files or folders. From the drop-down list, please click on Restore previous versions.
3. New window will open display all backup copy of files and folders you wanted to recover. Choose the appropriate file and click on Open, Copy, or Restore. Restoring selected files overwrites the current encrypted files on the computer.
Option 2: Use ShadowExplorer to restore files encrypted by Jaff Ransomware
Just like Previous Version tool, ShadowExplorer is taking advantage of shadow copy created by Windows. This tool allows you to retrieve older version of files before it was encrypted by Jaff Ransomware.
1. Download ShadowExplorer from the official web site.
2. Install the program with the default settings.
3. The program should run automatically after installation. If not, double-click on ShadowExplorer icon.
4. You can see the drop-down list on top of the console. Please select proper drive and the most recent point-in-time shadow copies of files you wish to restore prior to Jaff Ransomware infection.
5. Right-click on the Drive, Folder, or File you wish to restore and click Export…
6. Lastly, ShadowExplorer will prompt for location where you want to save the copy of recovered files.
