Understanding Vook Ransomware

Vook ransomware, a variant of the Djvu ransomware family, is a severe form of malware. It encrypts files and modifies their names by appending a “.vook” extension. For instance, the image file “1.jpg” becomes “1.jpg.vook”.

The ransomware also generates a ransom note in a text file named “_README.txt”. Cybercriminals often use data-stealing malware before encrypting files.

Vook ransomware encrypted files

The Ransom Demand

The ransom note informs victims that all their files have been encrypted using strong encryption and a unique key. It states that the only way to recover these files is by purchasing a decryption tool and a unique key.

The ransom amount is typically $999, with a 50% discount offered if victims contact the attackers within 72 hours. The note strenuously emphasizes that data cannot be restored without payment.

The Mechanics of Ransomware

Ransomware, like Vook, executes malicious operations through multi-stage shellcodes, culminating in the final payload responsible for encrypting files. It begins its operation by loading a library named msim32.dll, whose function is unclear.

To avoid detection, ransomware uses loops that prolong execution time, complicating identification by security systems. It also dynamically resolves APIs and creates a duplicate of itself, a tactic known as process hollowing, to increase resilience against interception.

Ransomware Distribution Methods

Threat actors distribute Djvu ransomware via pirated software, cracking tools, and key generators. Fake websites offering YouTube video downloads are also used to trick users into activating Djvu ransomware.

Ransomware also spreads through malicious files or links sent via email, peer-to-peer (P2P) networks, deceptive software updates, third-party downloaders, malicious ads, drive-by downloads, infected USB drives, and exploiting vulnerabilities in outdated software.

Name Vook virus
Threat Type Ransomware, Crypto Virus, Files locker
Encrypted Files Extension .vook
Ransom Demanding Message _README.txt
Free Decryptor Available? Partial (more information below)
Ransom Amount $490/$980
Cyber Criminal Contact support@freshingmail.top, datarestorehelpyou@airmail.cc

Protecting Yourself from Ransomware

To prevent ransomware infections, avoid clicking on suspicious links or ads and downloading content from questionable sources. Always get software from trusted sources and be cautious with email attachments and links from unfamiliar senders.

Keep your operating system and applications updated and use reputable antivirus software. Conduct routine system scans to detect and remove malware effectively. If your computer is infected with Vook, consider using SpyHunter for Windows to eliminate the ransomware.

Vook Ransomware Removal

To eliminate possible malware infections, scan your computer with legitimate antivirus software. We recommend using SpyHunter.

Recommended Solution:

Try SpyHunter

SpyHunter is a powerful tool that is able to keep your Windows clean. It would automatically search out and delete all elements related to malware. It is not only the easiest way to eliminate malware but also the safest and most assuring one. The full version of SpyHunter costs $42 (you get 6 months of subscription). By clicking the button, you agree to EULA and Privacy Policy. Downloading will start automatically.

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Try Stellar Data Recovery

Stellar Data Recovery is one of the most effective tools that can recover lost and corrupted files — documents, emails, pictures, videos, audio files, and more — on any Windows device. The powerful scan engine can detect compromised files and finally save them to specified destination. Despite its advancedness, it’s very concise and simple so that even the most inexperienced user can figure it out.

Download Stellar Data Recovery

Try MailWasher

Email security is the first line of defense against ransomware viruses. To do this, we recommend that you use MailWasher. MailWasher blocks ransomware viruses coming through spam and phishing, and automatically detects malicious attachments and URLs. In addition, malicious messages can be blocked even before the recipient opens them. Since the main source of the spread of ransomware viruses are infected emails, antispam significantly reduces the risk of a virus appearing on your computer.

Download MailWasher

Reporting Ransomware to Authorities

Victims of ransomware attacks are advised to report these incidents to authorities to help track cybercrime and potentially assist in the prosecution of the attackers.

Here’s a list of authorities where you should report a ransomware attack:

  • USA – Internet Crime Complaint Centre IC3
  • United Kingdom – Action Fraud
  • Spain – Policía Nacional
  • France – Ministère de l’Intérieur
  • Germany – Polizei
  • Italy – Polizia di Stato
  • The Netherlands – Politie
  • Poland – Policja
  • Portugal – Polícia Judiciária

Isolating the Infected Device

Ransomware can spread throughout the entire local network. Therefore, it’s crucial to isolate the infected device as soon as possible.

  1. Disconnect from the internet
  2. Unplug all storage devices
  3. Log-out of cloud storage accounts

Identifying the Ransomware Infection

Properly handling an infection requires identifying it. Ransomware infections usually generate messages with different file names. Therefore, using the name of a ransom message may be one way to identify the infection.

Another way to identify a ransomware infection is to check the file extension appended to each encrypted file. A reliable way to identify a ransomware infection is to use the ID Ransomware website.

Data Backup and Recovery

Creating regular up-to-date backups is essential for data security. We recommend using Microsoft OneDrive for backing up your files.

Frequently Asked Questions

Here are some common questions about Vook ransomware and their answers:

How was my computer hacked and how did hackers encrypt my files?

Threat actors employ diverse methods to breach systems, distributing ransomware via email (links or attachments), malicious ads, compromised websites, drive-by downloads, infected USB drives, P2P networks, etc. Djvu ransomware is frequently disseminated through cracked software or platforms promising YouTube video downloads.

How can I decrypt “.vook” files for free?

Typically, Djvu ransomware utilizes an online key for file encryption, making decryption challenging without help from developers or distributors. However, if an offline key is employed, data recovery becomes possible with Emsisoft’s Djvu decryption software.

Should I pay a ransom?

Paying a ransom is strongly discouraged since there are no guarantees that it will lead to receiving a decryption tool.

Will SpyHunter help me remove Vook ransomware?

SpyHunter will conduct a scan to eliminate ransomware from your system, which is the crucial first step in addressing the issue. However, it is important to note that while security tools like SpyHunter can remove ransomware, they do not have the capability to decrypt files.

Download SpyHunter

The fight against ransomware is ongoing, but with the right knowledge and tools, you can protect your data and recover from an attack. Stay vigilant, keep your software updated, and always maintain a backup of your important files.

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