This talk presents a piece of malware that had previously gone unnoticed and that seems to have been operational since at least 2015. Among the remarkable traits of RadRAT are its remote access capabilities, which include unfettered control of the compromised computer, lateral movement across the organization, and rootkit-like detection-evasion mechanisms. Powered by a vast array of features, this RAT can be used in targeted attacks aimed at exfiltrating information or monitoring victims in large networked organizations.