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CatB Ransomware

February 23, 2023

CatB ransomware appeared on the threat landscape in late 2022 and requires victims to contact the threat actor by email only. The malware uses DLL sideloading to execute the payload and demands 50 Bitcoin to obtain the decryption key. The malicious software is packed using UPX and performs multiple system checks to confirm its not running on virtual machines/sandboxes.