Threats
BlackBasta-Linked Actors Deploy New A0Backdoor via Microsoft Teams Social Engineering With DNS MX-Based C2
Threat actors linked to the dissolved BlackBasta ransomware operation are targeting employees at financial and healthcare organizations through Microsoft Teams social engineering to deploy a previously undocumented backdoor called A0Backdoor that hides its command-and-control communications inside DNS MX record queries. The campaign, disclosed by BlueVoyant, has confirmed targets including a