Threat actors are infiltrating the increasingly popular collaboration app to attach malicious files to chat threads that drop system-hijacking malware.
https://threatpost.com/microsoft-teams-targeted-takeover-trojans/178497/
Some security researchers say it’s actually Cobalt Strike and not a SmokeLoader variant, but BioBright says in-depth testing shows it’s for real a scary morphic malware that changes its parts and recompiles itself.
https://threatpost.com/shape-shifting-tardigrade-malware-hits-vaccine-makers/176601/