A new variant of the Xorist ransomware, dubbed L00KUPRU, has been discovered in the wild, posing a threat to unsuspecting users.

The L00KUPRU ransomware is known to encrypt user files, appending the .L00KUPRU extension to the affected files.

The attackers behind this malware have employed a sophisticated approach, dropping a ransom note as a text file titled “HOW TO DECRYPT FILES.txt.”

This note demands payment in Bitcoin cryptocurrency and displays a pop-up window on the victim’s desktop, providing the attackers’ contact details and the BTC wallet address for the ransom payment.

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Broadcom has published an article detailing its findings on the L00KUPRU ransomware.

The post includes technical details on the malware’s behavior, such as using encryption algorithms and command-and-control servers. 

Variant Details

A leading cybersecurity firm has identified several variants of the L00KUPRU ransomware, including:

1. Adaptive-based: ACM.Ps-RgPst!g1
2. File-based: Ransom.CryptoTorLocker, WS.Malware.1
3. Machine Learning-based: Heur.AdvML.B

These variants have been designed to evade detection and infiltrate systems, posing a significant threat to individuals and organizations.

The discovery of the L00KUPRU ransomware is a stark reminder of the ever-evolving landscape of cybersecurity threats.

Experts urge users to remain vigilant, keep their systems and software up-to-date, and implement robust backup strategies to mitigate the impact of such attacks.

Collaboration between security researchers, law enforcement, and the public is crucial in combating the rise of sophisticated ransomware variants like L00KUPRU.

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