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TRAILBLAZE is an in-memory dropper used to deploy the passive backdoor BRUSHFIRE. First reported in March 2025, TRAILBLAZE has been observed in operations attributed to People's Republic of China (PRC) state-sponsored affiliated actors, including UNC5221 and SYLVANITE. (Citation: Dragos SYLVANITE MuddyWater Electrum March 2026)(Citation: Google UNC5221 Ivanti April 2025)(Citation: Picus Security UNC5221 Ivanti May 2025)