Ransomware actors have taken a page from the playbooks of tech support scammers of yore by guiding victims to download malware using persuasion over the phone. Microsoft calls the campaign “BazaCall” The technique was first spotted in February, according to Palo Alto Networks’ Unit 41 research unit. Microsoft: Attacks emanating from the BazaCall threat could move quickly within a network, conduct extensive data exfiltration and credential theft, and distribute ransomware within 48 hours of the initial compromise.”]
Source: https://www.govinfosecurity.com/ransomware-actors-set-up-call-center-to-lure-victims-a-17203