An anonymous reader quotes The Stack
Search engine Shodan has announced a tool to help businesses hunt out and block traffic from malware command-and-control servers. The new Malware Hunter service, which has been designed in a collaborative project with threat intelligence company Recorded Future, continuously scans the internet to locate control panels for different remote access Trojans, including Gh0st RAT, Dark Comet, njRAT, XtremeRAT, Net Bus and Poison Ivy. The internet crawler identifies botnet C2 servers by connecting to public IP addresses and sending traffic which mimics that of an infected device. If the receiver computer sends back a response, that server is flagged.
The article reports that Shodan's Malware Hunter tool
has already traced over 5,700 RAT servers -- more than 4,000 of them based in the United States.