This week has been brutal, not because of many new ransomware variants released but due to a single ransomware campaign that affected thousands of people at once. Nitro Ransomware demanded Discord Nitro gift code rather than cryptocurrency to decrypt files. Qlocker ransomware attack began exploiting vulnerabilities in QNAP NAS storage devices to encrypt device’s files with the 7zip program. This attack is the largest one this year that has affected the most people at one, ranging from business owners to consumers using their NAS devices to store family photos and movies.
Source: https://www.bleepingcomputer.com/news/security/the-week-in-ransomware-april-23rd-2021-a-brutal-week/