A new bootlocker called UselessDisk has been discovered that overwrites the MBR of a victim’s computer and then displays a ransom screen on reboot instead of booting into Windows. Boeing computers at Boeing have allegedly been infected with the WannaCry Ransomware. The Boeing Twitter account later stated that this malware disruption was overstated. Overall, though, it has been a slow week. It was mostly small variants released this week. We did have a new Cryptomix variant released.
Source: https://www.bleepingcomputer.com/news/security/the-week-in-ransomware-march-30th-2018-mostly-small-variants/