Attackers Use Microsoft Teams IT Support Scams to Deploy Malware and Ransomware

Threat actors are using Microsoft Teams' external chat creation feature to run impersonation scams and deliver malware, according to cybersecurity researchers. They identified a recurring social engineering pattern across hundreds of cases, involving the same throwaway tenants and 'IT support' lures. The attacks aim to trick users into installing malicious software, potentially leading to ransomware deployment.