Ransomware-as-a-service operators distribute cryptolocking software that extort victims into paying in cryptocurrency for the promise of a decryption key. “GandCrab has been particularly aggressive throughout 2018,” chief scientist at McAfee, Raj Samani, recently told me. An independent malware researcher known as Valthek released a free decryptor for GandCrab ransomware versions 5.0 to 5.3, although he says it also potentially works with version 5.4.0.3.”]
Source: https://www.cuinfosecurity.com/blogs/gandcrab-ransomware-cat-and-mouse-game-continues-p-2684