The Vook virus belongs to the STOP/Djvu ransomware group and targets Windows computers. It works by encrypting the files on these computers, changing them into files with a “.Vook” extension, and then leaving a ransom note named “readme.txt” in each folder it affects.
Known as one of the most powerful types of malware, the Vook virus successfully blocks many different ways that might be used to recover encrypted files.
In this post, I’ll walk you through the events following a Vook virus attack and guide you on removing the malware from your system. You’ll also discover multiple file recovery methods post-attack.
Understanding the Vook Virus
The Vook ransomware, a malicious software targeting user files, encrypts them using a robust Salsa20 cipher, incapacitates antivirus programs, and erases backups. It modifies every document – whether a Word file, Excel spreadsheet, or photo – by appending a Vook file extension. For instance, “photo.jpg” becomes “photo.jpg.vook”. It then creates a ransom note called _readme.txt and places it in each folder containing encrypted files on your desktop, which details the ransom payment instructions as follows:
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Sharing habits with most STOP/Djvu ransomware variants, the Vook ransomware represents over 70% of individual ransomware attacks since its 2018 inception. It introduced many features now common across ransomware targeting individuals, such as ransom demands, notification methods, and backup prevention measures.
Vook Ransomware
STOP/Djvu ransomware, including the Vook variant, spreads through similar channels, namely software cracks, unlicensed programs, and dubious internet tools. Specifically, it leverages single-use websites that offer trending items like new movies or software cracks. These sites often pushed to the top of search results through spam techniques, host malicious links that deliver ransomware.
Initially, cybercriminals inject downloader malware that paves the way for the ransomware by disabling security defenses, such as Windows Defender, and implementing changes to hinder antivirus programs from blocking or removing the ransomware.
The Vook Virus Encryption Process
Upon entry, the Vook ransomware disables common backup methods and blocks access to potential recovery solutions. It then systematically encrypts files, connecting to its server for an encryption key before starting the encryption process, which it repeats until all target files are encrypted.
To ensure persistence, Vook ransomware clones its executable file into obscure directories, avoiding detection by most antivirus software.
Removing Vook and Safeguarding Against Ransomware
Given its sophistication, detecting and removing ransomware demands the utmost care. The Vook virus, known for hindering security software execution, requires you to bypass these restrictions for successful removal and system recovery.
Loaris Trojan Remover stands out as the premier choice for eradicating the ransomware threat and restoring your system. It boasts an advanced scanning engine that detects ransomware in all forms and allows for targeted scans with its Custom Scan feature.
To navigate around the ransomware’s execution blocks, boot your PC in Safe Mode with Networking. This can be done through the Troubleshooting panel by restarting your PC while holding the Shift key, navigating to Startup Settings, and selecting Windows 10 Safe Mode with Networking.
In Safe Mode, launch the Loaris installer, follow the installation prompts, and activate the free trial for full functionality.
Conduct a full scan, review the list of detected threats, and proceed with the recommended removal actions.
Decrypting Vook Files
Decrypting files affected by Vook ransomware might seem daunting, but not all hope is lost. The malware uses two key types – online and offline – with the latter offering a ray of hope for decryption.
Emsisoft’s free tool for STOP/Djvu decryption leverages collected keys to offer victims a chance at recovering their files.
Decryption with Emsisoft Decryptor for STOP Djvu
Install the Emsisoft Decryptor for STOP Djvu from the official website, set it up by specifying target folders, and initiate the decryption process.
If Emsisoft’s tool cannot decrypt your files, consider file recovery tools as an alternative. For example, PhotoRec, a free tool, can recover files deleted by ransomware by searching for residual data left on the disk.
Recovering .Vook Files with PhotoRec
Download PhotoRec, specify the disk or partition and desired file formats for recovery and start the recovery process to salvage your encrypted data.
Frequently Asked Questions
🤔Can I decrypt the online key ID by myself?
Deciphering the online ID used by Vook ransomware is currently beyond the reach of modern computing, potentially taking millions of years due to its complexity. The most effective alternative is employing file recovery tools, as detailed above.
🤔Can Trojan Remover decrypt files?
While Trojan Remover excels at eliminating Vook ransomware and repairing the aftermath on your PC, it doesn’t decrypt files. For decryption attempts, please use the recommended tools.
🤔Are encrypted Vook files a threat to my system?
This files remain as they were before encryption, except for the altered file header, which prevents your system from recognizing and reading them. They’re not infectious or harmful to your computer’s health. Keeping them on your system poses no security risk, allowing you to focus on recovery options without worry.