In this article we descrbe third generation of STOP Ransomware, previous two versions were described by our team earlier. This variation was actively spreaded in August and September, 2018. Virus already attacked users from 25 countries including Brazil, Chile, Vietnam, USA, United Arab Emirates, Egypt, Algeria, Indonesia, India, Iran, Poland, Belarus, Ukraine. This variation uses uses symmetric and asymmetric cryptography and adds .KEYPASS, .WHY or .SAVEfiles extensions to the files after encryption. Intruders demand $300 ransom for decryption. They offer to decrypt up to 3 random files for free, to prove that decryption is possible. Hackers also warn, that if amount is not paid within 72 hours data restoration will be impossible.