With Mirai Comes Miori: IoT Botnet Delivered via ThinkPHP Remote Code Execution Exploit

We analyzed another Mirai variant called “Miori,” which is being spread through a Remote Code Execution (RCE) vulnerability in the PHP framework, ThinkPHP. Aside from Miori, several known Mirai variants like IZ1H9 and APEP were also spotted using the same RCE exploit for their arrival method. The aforementioned variants all use factory default credentials via Telnet to brute force their way in and spread to other devices.