A variant of the Mirai botnet, composed at lease of 13,000 compromised IoT devices was used to launch a series of DDoS attacks against financial sector businesses. The latest attacks observed by Recorded Future took place between Jan. 27 through 28, the experts spotted three different attacks. The first DDoS attack implemented a DNS amplification technique and peaked at 30 Gbps. The botnet used in the first company attack was composed of 80 percent of compromised MikroTik routers and 20% of various IoT devices.”]
Source: https://securityaffairs.co/wordpress/71127/malware/mirai-botnet-financial.html