MegaCortex and RietSpoof - Keep an Eye out for Instant Messaging Spam Attacks
These are all related. Beware! Pretty Interesting Ransomware MegaCortex (cool name too) - looks like it is spreading through Skype Spam https://buzzsec.blogspot.com/2019/05/cpa-practice-adviser-wolters-kluwer-cch.html https://buzzsec.blogspot.com/2019/05/krebs-whats-behind-wolters-kluwer-tax.html https://www.zdnet.com/article/sudden-surge-of-megacortex-ransomware-infections-detected/ https://www.zdnet.com/article/rietspoof-malware-spreads-via-skype-spam/ https://blog.tekkersit.com/wolters-kluwer-hit-by-mega-cortex-ransomware