Microsoft says that the volume of malicious attacks hasn’t increased but, instead, threat actors have repurposed infrastructure used in previous attacks and rethemed attack campaigns to exploit fears surrounding the COVID-19 pandemic. The US, China, and Russia have been the ones countries targeted by some type of pandemic-themed attacks. The Trickbot and Emotet malware families have been very active and making use of such lure to exploit the outbreak. Microsoft is sending notifications to dozens of hospitals affected by such attacks and about vulnerable exposed VPN devices.
Source: https://www.bleepingcomputer.com/news/security/microsoft-no-surge-in-malicious-attacks-only-more-covid-19-lures/