US-CERT, the Department of Homeland Security team responsible for analyzing cybersecurity threats, has posted a warning about cyber attacks by the North Korean government, which it collectively refers to as “Hidden Cobra.” The technical alert from the FBI and Department of Homeland Security says a remote administration tool (RAT) called FALLCHILL has been deployed by Hidden Cobra since 2016 to target the aerospace, telecommunications and finance industries. FALLCHILL allows Hidden Cobra to issue commands to a victim’s server by dual proxies, which means it can potentially perform actions like retrieving information about all installed disks, accessing files, modifying file or directory timestamps and deleting evidence that it’s been on the infected server.

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