MythicRatatoskr: An Yggdrasil-enabled backdoor deployed in a UAC-0099-Sandworm collaboration

ESET researchers have uncovered MythicRatatoskr, a previously unknown Go-based backdoor that hides its command-and-control server inside the Yggdrasil mesh network, WeLiveSecurity reports. The backdoor paved the way for a destructive attack against a Ukrainian grain firm, in a collaboration between UAC-0099 and Sandworm.