New A0Backdoor Linked to Teams Impersonation and Quick Assist Social Engineering
BlueVoyant Security Operations Center (SOC) and Threat Fusion Cell (TFC) continue to track an activity cluster that uses email bombing and IT-support impersonation over Microsoft Teams to obtain Quick Assist access, then pivot to a deeper attack. This research shows that once on the victim’s host, the actors sideload a malicious DLL to deliver a new backdoor BlueVoyant has dubbed the A0Backdoor.