Ransomware decryption tool: Victims of MegaCortex can now unlock their files for free

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Victims of MegaCortex ransomware attacks can now decrypt their files without giving into the ransom demands of cyber criminals, thanks to a free decryption tool that’s been released following collaboration between cybersecurity researchers and police. 

The MegaCortex ransomware decryptor was built by cybersecurity analysts at Bitdefender in cooperation with Europol, the No More Ransom Project, the Zürich Public Prosecutor’s Office, and the Zürich Cantonal Police. 

The decryption tool, which should work with all variants of MegaCortex ransomware, is available to download from Bitdefender and via No More Ransom’s decryption tools portal

MegaCortex ransomware has plagued organizations across the world for several years, with cyber criminals infiltrating computer networks, gaining access privileges, using that opening to install and trigger file-encrypting malware attacks, and then demanding a ransom payment for the decryption key. The ransom demands have often amounted to millions of dollars — requested in Bitcoin.  

Also: Ransomware: Why it’s still a big threat, and where the gangs are going next

Some of the MegaCortex ransomware attacks have reportedly hit critical infrastructure and other high-profile targets — with attackers using a variety of methods to gain access to networks, including buying access to systems compromised with trojan malware, or stealing usernames and passwords

“MegaCortex is operated by a complex team — some of the team members specialize in identifying and exploiting known vulnerabilities in exposed infrastructure, or by leveraging a pre-existing infection on the network — such as Emotet or Qakbot,” Bogdan Botezatu, director

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