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ESET: MythicRatatoskr: An Yggdrasil-enabled backdoor deployed in a UAC-0099-Sandworm collaboration https://www.welivesecurity.com/en/eset-research/mythicratatoskr-yggdrasil-enabled-backdoor-deployed-uac0099-sandworm-collaboration/ @ESETresearch #infosec #malware #threatresearch #cyberattack