Not long after a new strain of the Akuma malware was discovered targeting ZyXEL devices with a new series of login/password attacks, FortiGuard Labs last week also began detecting strange scanning activities on uncommon TCP ports 52869 and 37215. We and other threat research teams quickly began to suspect that these were tied together, and that there was a new botnet out there.
Article Link: https://blog.fortinet.com/2017/12/12/rise-of-one-more-mirai-worm-variant