Another Addition to the DJVU Family: Qual Ransomware

What is Qual Ransomware?

Qual Ransomware is a malicious software variant identified as part of the Djvu ransomware family. Qual Ransomware exhibits typical characteristics of this notorious group of cyber threats. When activated, it encrypts the victim's files, renaming them by appending a ".qual" extension. For instance, a file originally named "picture.png" becomes "picture.png.qual", and so on. Upon completion of the encryption process, a ransom note is dropped in a text file named "_readme.txt."

The Ransom Note and Its Demands

The ransom note left by Qual Ransomware informs victims that their essential files, including databases, documents, and pictures, have been encrypted. To recover the encrypted data, victims are instructed to purchase a decryption program and key from the attackers. Victims are allowed to test the decryption process by sending a single encrypted file to the cybercriminals. The attackers demand $999 for the decryption tools, but if contacted within 72 hours, the ransom is reduced to $499. The note explicitly warns against seeking help from third parties.

Here's the text of the note:

ATTENTION!

Don't worry, you can return all your files!
All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key.
The only method of recovering files is to purchase decrypt tool and unique key for you.
This software will decrypt all your encrypted files.
What guarantees you have?
You can send one of your encrypted file from your PC and we decrypt it for free.
But we can decrypt only 1 file for free. File must not contain valuable information.
Do not ask assistants from youtube and recovery data sites for help in recovering your data.
They can use your free decryption quota and scam you.
Our contact is emails in this text document only.
You can get and look video overview decrypt tool.
Price of private key and decrypt software is $999.
Discount 50% available if you contact us first 72 hours, that's price for you is $499.
Please note that you'll never restore your data without payment.
Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours.

To get this software you need write on our e-mail:
support@freshingmail.top

Reserve e-mail address to contact us:
datarestorehelpyou@airmail.cc

Your personal ID:

How Ransomware Programs Operate

Ransomware programs like Qual primarily aim to extort money from victims by encrypting their data and demanding a ransom for its release. Belonging to the Djvu family, Qual Ransomware employs multi-stage infection chains to infiltrate devices. It uses several shell codes before the final payload, which is the data encryption stage. These ransomware programs also use mechanisms such as looping to extend their runtime and dynamic API resolution to access critical tools. Another technique, process hollowing, allows the malware to disguise itself as a benign process, reducing the chances of detection.

The Challenge of Decryption

Decrypting files affected by ransomware like Qual without the attackers' decryption key is typically impossible. Decryption occurs only in rare cases involving severely flawed ransomware programs without the attackers' intervention. Even then, paying the ransom does not guarantee file recovery, as cybercriminals often fail to provide the promised decryption keys or software even after payment is made. Experts strongly advise against paying the ransom, as it supports and encourages criminal activity.

Preventing Further Damage

To prevent further data encryption by Qual Ransomware, removing the malware from the operating system is crucial. However, removing the ransomware will not restore already encrypted files. The only solution at hand is to recover them from a backup, provided it was made before the infection and stored separately from the infected system. Maintaining backups in multiple secure locations, such as remote servers or unplugged storage devices, is the best practice to ensure data safety.

Common Ransomware Distribution Methods

Ransomware like Qual spreads primarily through phishing and social engineering techniques. It often masquerades as or is bundled with legitimate software or media files. These files come in various formats, including archives (ZIP, RAR), executables (.exe, .run), documents (PDF, Microsoft Office, Microsoft OneNote), and JavaScript. Common distribution methods include backdoor or loader-type trojans, drive-by downloads, malicious attachments or links in spam emails, malvertising, online scams, dubious download channels, illegal software activation tools, and fake updates.

Vigilance and Safe Practices

To protect against ransomware, it is essential to exercise caution when browsing online and handling incoming emails and messages. Suspicious or irrelevant mail, especially those with attachments or links, should be avoided, as they can be harmful or infectious. All downloads should be performed from official and verified sources, and programs should be activated and updated using legitimate tools. Acquiring software from third-party sources increases the risk of malware infection.

Final Thoughts

Qual ransomware is a significant threat that highlights the dangers posed by the Djvu ransomware family. It encrypts critical data and demands a ransom, placing victims in a difficult position. However, paying the ransom is not advisable due to cybercriminals' unreliability. Prevention through vigilance, safe browsing practices, and regular backups stored in secure locations is the best defense against such ransomware threats.

How To Automatically Stop & Remove QUAL Ransomware To Stop File Encryption