The China-aligned state-sponsored threat actor known as FamousSparrow has been observed deploying a previously unreported backdoor called SparroWocky in attacks targeting multiple countries in Latin America since at least August 2025.
“SparroWocky is a modular, C++ backdoor,” ESET security researchers Alexandre Côté Cyr and Romain Dumont said in a technical report shared with The Hacker News
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