UNC1549UNC1549

UNC1549 is an Iranian threat actor linked to Tortoiseshell and potentially the IRGC. They have been active since at least June 2022, targeting entities worldwide with a focus on the Middle East. UNC1549 uses spear-phishing and credential harvesting for initial access, deploying custom malware like MINIBIKE and MINIBUS backdoors. They have also been observed using evasion techniques and a tunneler named LIGHTRAIL in their operations.