A newly discovered ransomware group called Yurei has emerged with sophisticated encryption capabilities, targeting organizations through double-extortion tactics while leveraging open-source code to rapidly scale operations. First observed on September 5, 2025, this Go-based ransomware employs the ChaCha20 encryption algorithm and PowerShell commands to compromise victim systems, marking another evolution in the ransomware-as-a-service ecosystem. Flow […] The post Yurei Ransomware Uses PowerShell to Deploy ChaCha20 File Encryption appeared first on GBHackers Security | #1 Globally Trusted Cyber Security News Platform.
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