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Free Decryptors Launched for BianLian, MegaCortex Ransomware

By Ionut Arghire on January 17, 2023

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Avast and Bitdefender have launched decryptors to assist victims of BianLian and MegaCortex ransomware recuperate their knowledge without spending a dime.

Written in Golang, BianLian emerged in August 2022 and has been utilized in focused assaults in opposition to leisure, healthcare, media, and manufacturing organizations.

As soon as it has been executed on a sufferer’s machine, the malware identifies all accessible drives to search out recordsdata and encrypt them.

BianLian targets a complete of 1,013 file extensions and includes a specific encryption routine: it doesn’t encrypt knowledge at first of a file, nor knowledge at its finish.

Recognized for its quick encryption capabilities, the ransomware appends the “.bianlian” extension to the affected recordsdata and drops a ransom notice named “Take a look at this instruction.txt” in every folder on the machine. As soon as the encryption course of has been accomplished, the malware deletes itself.

Avast warns that its decryption instrument solely works with recordsdata encrypted with a identified variant of BianLian and that victims of more moderen variations of the ransomware would possibly want to offer a malware binary to have the ability to recuperate their knowledge without spending a dime.

The BianLian decryptor (direct obtain) is obtainable on Avast’s web site. The cybersecurity agency additionally gives detailed directions on how the instrument ought to be used.

The MegaCortex ransomware initially emerged in January 2019, however didn’t rise to fame till Might that yr, when it was utilized in a worldwide assault marketing campaign.

The malware was utilized by the identical cybercriminals who additionally distributed the Dharma and LockerGoga ransomware, and who’re believed to have contaminated roughly 1,800 victims, largely firms.

In 2020, MegaCortex was talked about in a FireEye report as being one of many six ransomware households to make use of a ‘course of kill record’ concentrating on over 1,000 processes, together with industrial software program.

In October 2021, Europol and Norwegian Police introduced the arrest of 12 people believed to have been a part of the cybercrime ring.

Earlier this month, Bitdefender introduced the supply of a free decryption instrument for the MegaCortex victims, in-built cooperation with the NoMoreRansom Undertaking, Europol, and Swiss legislation enforcement. The decryptor is obtainable on Bitdefender’s web site (direct obtain) and the corporate additionally gives a step-by-step information to utilizing the instrument.

Associated: Free Decryptor Obtainable for LockerGoga Ransomware Victims

Associated: Free Decryptors Launched for AstraLocker Ransomware

Associated: Can Encryption Key Intercepts Resolve The Ransomware Epidemic?

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