Hackers likely working for Russian intelligence services have been attacking organizations involved in the research and development of a vaccine against the new coronavirus. The activity is ongoing, attributed to the APT29 threat group, also tracked as Cozy Bear, The Dukes, and Yttrium. Targets are in the government, healthcare, diplomatic, think-tank, and energy sectors. The full advisory (PDF) includes rules and indicators of compromise (IOC) that organizations can use to detect malicious activity.
Source: https://www.bleepingcomputer.com/news/security/russian-hackers-target-covid-19-vaccine-research-with-custom-malware/