https://www.bleepingcomputer.com/news/security/winter-vivern-apt-hackers-use-fake-antivirus-scans-to-install-malware/

An advanced hacking group named 'Winter Vivern' targets European government organizations and telecommunication service providers to conduct espionage.

The group's activities align with the interests of the Russian and Belarusian governments, so it is believed that this is a pro-Russian APT (advanced persistent threat) group.