Danger level:  
  (99/100)

Jaff ransomware. How to delete? (Removal tutorial)

removal by Alice Woods - - | Type: Ransomware
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Jaff malware strikes again with a more attractive design

Jaff virus operates as a file-encrypting threat capable of encoding data with the combination of AES and AES ciphers. After the encryption process is finished, the files are marked with .jaff file extensions. The malware does not constrain itself simply by spreading through phishing emails; it targets users by disguising as PDF file attachments. In order for a victim to see the hidden content of the attachment, perpetrators suggest enabling macro settings. Once users allow the command, the malware starts its mission to encode files. It is capable of encrypting more than 424 different file formats. Recent analysis reveals that the felons launched a second malware campaign. The latest versions reflect modifications in its visual design. No drastic changes in the source code were implemented. Now it also appends .wlu file extensions and presents a new design. Previous versions left ReadMe.bmp, ReadMe.txt, ReadMe.html file or Jaff Decryption System notifications with instructions, but the latest edition presents its unique graphic user interface (GUI) – Jaff Decryptor. The former file informs the user about the desperate situation they are in and urges them purchasing 2 bitcoins (≈£3600). The malware has been active in the cyber space for a while already which implies that felons chose successful distribution and hacking strategies. Though this malware certainly should be treated with care, we recommend performing Jaff removal immediately. Reimage or Malwarebytes Anti Malware may be of service.The picture illustrating Jaff malware

The racketeers of this malware surely made use from such well-known cyber menaces as Locky or Dridex. They have borrowed some ideas and successfully adopted them in their hacking strategy. Thus Jaff malware employs macro settings’ technique to gain more effectiveness. Furthermore, it actively exploits Necurs botnet which sends out malware samples disguised in DOCM files which are wrapped in PDF file attachments. Since the threat is devised for Windows OS, it will automatically open a dialogue box asking to ‘Enable content.’ After granting the permission, hidden VBS script activates the download process of the main payload. Such command also sends inquiries for a remote Command and Control server to inform the perpetrators. Furthermore, within minutes, the encryption process begins. By combining AES and RSA ciphering technique, a unique private key is created. It is directly interrelated with the public key which was used for data encryption. Acquiring private key would guarantee that all of the affected data would be successfully decrypted. However, now there are various programs which help users retrieve their lost and damaged personal files. Those, which employ shadow volume copies, provide higher data decryption guarantees. Nonetheless, Jaff felons thought it over thoroughly and set the command for the malware to delete these copies during the data decryption process.The screenshot of Jaff ransomware virus

After completing the encryption stage, the ransom notifications are placed in every folder containing encrypted files. Jaff ransomware only evades altering system files. When GUI program opens, it displays victims’ ID and links to payment sites accessible only via Tor browser. Speaking of the payment interface, it instructs users how to purchase bitcoins. The first versions of the malware demanded approximately 1.82 BTC, but now the cyber villains raised the benchmark up to 3600 pounds. Indeed, the malware remains one of the most troublesome cyber issues, but it would be unwise to remit the payment. Driven by hopes to retrieve files and paying ransoms, users only encourage racketeers to continue the illegal business. To sum up, there are enough reasons to remove Jaff rather than follow the demands.

Transmission preferences

The key factor which predetermines the success of the malware is its usage of multiple channels and particularly botnets. In order for Jaff hijack process to complete successfully, Necurs botnet monitors the traffic of this malware. It plays a key role in sending malicious spam emails with corrupted nm.pdf attachments. Recently, the virus has been detected disguising under Copy of Invoice 99483713 or Invoice(58-0710) invoices. Note that the identification numbers differ depending on the recipient. Invoices and tax reports dominate among spam email subject topics. The fraudsters may also employ other techniques to trigger targetted users‘ curiosity and persuade them into opening attachments. Though this method still contains flaws which allow users to evade this cyber misfortune, if users have older versions of Adobe Reader, they risk facilitating the hacking process sooner. In short, older versions enable DOCM content automatically. Personal vigilance plays a significant role in ransomware prevention as in some cases anti-virus tools may fail to detect fraudulent files while only your sense of cautiousness might save from the troublesome outcomes of the malware.

Malspam is not the only way how a file-encrypting threat may occupy a device. Some ransomware developers prefer employing exploit kits, placed in torrent sharing networks, malicious scripts, video links or social network messages, and browser extensions in their malware distribution campaign. In that case, mere vigilance and cautiousness will not be sufficient in ceasing the attack. Thus, it is vital to install several security applications and keep them updated.

Jaff Decryption System elimination guide

Whether older or newer version has settled on the system, we offer one elimination method. Manual Jaff removal is not the option since the malware spreads its files throughout the entire operating system physical effort may not be fruitful. Time is of crucial importance when dealing with ransomware. Therefore, run the scan with malware elimination tool to remove Jaff virus. In case you cannot run the program, take a look at the below instructions. They instruct how to launch the computer in Safe Mode. This mode provides limited access, but it bypasses malware intervention and attempts to shut down the tool. There is also a second option if the first method fails to recover access.

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What to do if failed?
If you failed to remove infection using Reimage, submit a question to our support team and provide as much details as possible.
Computer security experts recommend using Reimage to uninstall Jaff ransomware. Reimage scans the entire computer system and checks whether it is infected with spyware/malware or not. If you want to remove computer threats and secure your computer system, you should consider buying the licensed version of Reimage.

You can find more details about this program in Reimage review.

You can find more details about this program in Reimage review.
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Manual Jaff Virus Removal Instructions:

Eliminate Jaff using Safe Mode with Networking

You can detect malware using Reimage.
You need to purchase a licensed version of it to remove threats.
More details about Reimage.

  • Step 1: Restart your computer in Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Go to Start Shutdown Restart OK.
    2. As soon as your computer starts, start pressing F8 key repeatedly before the Windows logo shows up.
    3. Choose Safe Mode with Networking from the list Choose 'Safe Mode with Networking' option

    Windows 10 / Windows 8
    1. Click on the Power button at the Windows login screen, and then press and hold Shift key on your keyboard. Then click Restart.
    2. Then select Troubleshoot Advanced options Startup Settings and click Restart.
    3. Once your computer starts, select Enable Safe Mode with Networking from the list of options in Startup Settings. Choose 'Enable Safe Mode with Networking' option
  • Step 2: Remove Jaff

    Sign in to your account and launch any Internet browser. Download a legitimate anti-malware software, for instance, Reimage. Make sure you update it to the latest version and then run a full system scan with it to detect and eliminate all malicious components of the ransomware to remove Jaff completely.

If your ransomware does not allow you to access Safe Mode with Networking, please follow the instructions provided below.

Eliminate Jaff using System Restore

You can detect malware using Reimage.
You need to purchase a licensed version of it to remove threats.
More details about Reimage.

Since Jaff ransomware operates as a full-fledged file-encrypting threat, it may meddle with an anti-virus launch process.

  • Step 1: Restart your computer in Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Go to Start Shutdown Restart OK.
    2. As soon as your computer starts, start pressing F8 key repeatedly before the Windows logo shows up.
    3. Choose Command Prompt from the list Choose 'Safe Mode with Command Prompt' option

    Windows 10 / Windows 8
    1. Click on the Power button at the Windows login screen, and then press and hold Shift key on your keyboard. Then click Restart.
    2. Then select Troubleshoot Advanced options Startup Settings and click Restart.
    3. Once your computer starts, select Enable Safe Mode with Command Prompt from the list of options in Startup Settings. Choose 'Enable Safe Mode with Command Prompt' option
  • Step 2: Perform a system restore to recover files and settings
    1. When the Command Prompt window appears, type in cd restore and press Enter. Type 'cd restore' without quotes and hit 'Enter'
    2. Then type rstrui.exe and hit Enter.. Type 'rstrui.exe' without quotes and hit 'Enter'
    3. In a new window that shows up, click the Next button and choose a restore point that was created before the infiltration of Jaff and then click on the Next button again. When 'System Restore' wizard comes up, click 'Next'. Choose a preferable restore point and click 'Next'
    4. To start system restore, click Yes. Hit 'Yes' and start system restore
    After restoring the computer system to an antecedent date, install and check your computer with Reimage to uncover any remains of Jaff.

Bonus: Restore your files

Using the tutorial provided above you should be able to eliminate Jaff from the infected device. novirus.uk team has also prepared an in-depth data recovery guide which you will also find above.

If you have created backups a while ago, they may be your only chance to restore all files.

There are a couple of methods you can apply to recover data encrypted by Jaff:

Does Data Recovery Pro restore files affected by Jaff virus?

It has been devised to recover corrupted, damaged, deleted and some of the encrypted files. The developers also promote its capability to restore lost od damaged email messages.

  • Download Data Recovery Pro (https://novirus.uk/download/data-recovery-pro-setup.exe);
  • Install Data Recovery on your computer following the steps indicated in the software’s Setup;
  • Run the program to scan your device for the data encrypted by Jaff ransomware;
  • Recover the data.

Windows Previous Versions option

In case System Restore was previously activated, you may benefit from this method. However, this method requires more time as you have to manually go through affected file and apply following steps.

  • Right-click on the encrypted document you want to recover;
  • Click “Properties” and navigate to “Previous versions” tab;
  • In the “Folder versions” section look for the available file copies. Choose the desired version and press “Restore”.

Jeff Decryptor

At the moment, no official decryption software is available.

It is strongly recommended to take precautions and secure your computer from malware attacks. To protect your PC from Jaff and other dangerous viruses, you should install and keep a powerful malware removal tool, for instance, Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware.

About the author

Alice Woods
Alice Woods

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Source: https://www.2-spyware.com/remove-jaff-ransomware-virus.html

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