Nexcorium Mirai Variant Weaponises TBK DVR Vulnerability in Fresh IoT Botnet Push

Nexcorium is a Mirai-family IoT botnet actively exploiting CVE-2024-3721 in TBK DVRs (and leveraging CVE-2017-17215 and default-password Telnet brute-force) to deliver a multi-architecture payload that establishes persistence and receives commands to execute diverse, large-scale DDoS attacks; FortiGuard Labs observed a distinctive "X-Hacked-By:Nexus Team – Exploited By Erratic" HTTP header linking the activity to a suspected Nexus Team actor.