The initial version of GandCrab had a critical bug in the code that left the decryption key in the memory of the infected computer, so an anti-malware company, working together with Europol and the Romanian Police, quickly developed a decryptor and offered it for free download on. lock, or a combination of random 5 to 10 letters. Depending on which version of the malware has infected the computer, these file extensions could be. A characteristic feature of all GandCrab cases is that this ransomware adds specific extensions to the encrypted files.
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GandCrab is mostly distributed through spam emails, exploit kits, fake updates, and cracked legit software. The amount of the required ransom has also been raised. The original version has checked for files to encrypt against a specific list of file extensions, whereas the second and all subsequent GandCrab versions have an exclusion list instead, and encrypt all other files that do not appear on that list. The pattern for choosing which files to encrypt has evolved as well. Malware researchers believe that this is done mostly for speed reasons as the Salsa20 cipher is much quicker. The features and encryption mechanisms of this ransomware have evolved since its first appearance - while the initial three versions have used RSA and AES encryption algorithms to lock up data on the infected device, version 4 and above employ additional and more sophisticated cipher like Salsa20. The latest version was identified just about a month ago in September 2018. That cryptovirus appeared for the first time at the end of January this year, and since then researchers have identified several different versions of GandCrab, among which GDCB, GandCrab v2, GandCrab v3, GandCrab v4, and GandCrab v5. GandCrab ransomware is a malware threat that encrypts data on affected computers and demands the payment of ransom in exchange for a decryption tool.
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