China-linked UnsolicitedBooker APT used new backdoor MarsSnake in recent attacks

China-linked UnsolicitedBooker used a new backdoor, MarsSnake, to target an international organization in Saudi Arabia. ESET researchers revealed that a China-linked APT, tracked as UnsolicitedBooker, targeted an international organization in Saudi Arabia using a new backdoor called MarsSnake. The experts uncovered the attacks in March 2023 and again in 2024, noting that the group used […]

May 20, 2025
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Russia-linked ColdRiver used LostKeys malware in recent attacks

Since early 2025, Russia-linked ColdRiver has used LostKeys malware to steal files in espionage attacks on Western governments and organizations. Google’s Threat Intelligence Group discovered LOSTKEYS, a new malware used by Russia-linked APT COLDRIVER, in recent attacks to steal files and gather system info. The ColdRiver APT (aka “Seaborgium“, “Callisto”, “Star Blizzard”, “TA446”) is a Russian cyberespionage group […]

May 9, 2025
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