VERY IMPORTANT

In late February 2019, Unit 42 discovered Mirai samples compiled for new processors/architectures not previously seen before. Despite the source code being publicly released In October of 2016, the malware has, until now, only been found targeting a fixed set of processors/architectures. Unit 42 has found the newly discovered samples are compiled for Altera Nios II, OpenRISC, Tensilica Xtensa, and Xilinx MicroBlaze processors. This is not the first time Mirai has been expanded for new processor architectures, samples targeting ARC CPUs were discovered in January 2018. Yet this development shows that Mirai developers continue to actively innovate, targeting a growing array of IoT devices.