National Cyber Warfare Foundation (NCWF)

OysterLoader Evasion Tactics Exposed: Advanced Obfuscation and Rhysida Ransomware Ties Uncovered


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2026-02-13 08:17:28
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Red Team (CNA)

OysterLoader, also tracked as Broomstick and CleanUp, is a multi‑stage loader malware written in C++ and actively leveraged in campaigns linked to the Rhysida ransomware group. First highlighted in mid‑2024 during malvertising and SEO‑poisoning campaigns abusing trojanized installers for popular IT tools such as PuTTY, WinSCP, and Google Authenticator, OysterLoader masquerades as legitimate software download […]


The post OysterLoader Evasion Tactics Exposed: Advanced Obfuscation and Rhysida Ransomware Ties Uncovered appeared first on GBHackers Security | #1 Globally Trusted Cyber Security News Platform.



Mayura Kathir

Source: gbHackers
Source Link: https://gbhackers.com/oysterloader-evasion-tactics/


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