External Teams Chats Anchor 15-Minute Malware Delivery

A social engineering campaign is currently underway, potentially linked to the Black Basta ransomware gang, and involves the use of external teams chats. This campaign appears to be part of a larger effort to deliver malware. The scope of the campaign is wide-scale and ongoing. The malware delivery process is reportedly rapid, taking approximately 15 minutes. The campaign's tactics are being referred to as a new take on traditional phishing methods, dubbed main bombing.