Millenium RAT version 4.* exposes a compact but potent evolution: the malware has migrated from .NET to native C++, while retaining a stealthy Telegram-based command-and-control (C2) model that requires no bespoke server infrastructure. The sample set and telemetry analyzed by Group-IB show the RAT embeds its entire configuration inside an RCDATA resource, masks that configuration […]

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Mayura Kathir

Source: gbHackers
Source Link: https://gbhackers.com/millenium-rat-uses-base64-and-xor/