Additional Features of OtterCookie Malware Used by WaterPlum

NTT Security Japan

WaterPlum (also called as Famous Chollima or PurpleBravo) is reportedly a North Korea-linked attack group that targeting financial institutions, cryptocurrency operators and FinTech companies worldwide. They have been using malware called BeaverTail or InvisibleFerret in Contagious Interview campaign since around 2023, they started using new malware since September 2024.