A sophisticated malware loader called OysterLoader, a multi-stage downloader linked to ransomware intrusions and large-scale data theft. Also known as Broomstick and CleanUp, the malware has been active since mid-2024. It is now strongly associated with operations leading to Rhysida ransomware attacks. OysterLoader is written in C++ and primarily spreads via malicious websites that mimic […] The post Researchers Uncover OysterLoader, an Advanced Obfuscated Loader Powering Rhysida Attacks appeared first on Cyber Security News.