China-linked APT group UnsolicitedBooker used a new backdoor named MarsSnake to target an international organization in Saudi Arabia.
The group employed spear-phishing emails with fake flight ticket lures to infiltrate systems and has a history of targeting government organizations in Asia, Africa, and the Middle East.
UnsolicitedBooker's arsenal includes backdoors like Chinoxy, DeedRAT, Poison Ivy, and BeRAT, commonly seen in Chinese APT groups, indicating espionage and data theft motives.
The repeated attacks on the Saudi organization in 2023, 2024, and 2025 show a persistent interest from UnsolicitedBooker in the specific target.