Cuba Ransomware On A Roll

At the end of 2020, our team made up of SecurityJoes and Profero incident responders, led an investigation into a complex attack in which hundreds of machines were encrypted, knocking the victim company offline completely. The threat actors behind the attack deployed the Cuba ransomware across the corporate network, using a mixture of PowerShell scripts, SystemBC, and Cobalt Strike to propagate it. Cuba Ransomware utilizes the symmetric ChaCha20 algorithm for encrypting files, and the asymmetric RSA algorithm for encrypting key information. As a result, the files could not be decrypted without the threat actor’s private RSA key... READ MORE