Crypto24 is a ransomware group that emerged in July 2024, operating under a Ransomware-as-a-Service model with a focus on financial gain through data encryption and extortion. Known for its use of legitimate IT tools combined with custom malware, the group conducts stealthy, multi-stage attacks and primarily targets organizations during off-peak hours to evade detection.
Key insights
•Utilizes phishing and exploited RDP services for initial access.
•Employs proprietary ransomware that appends a '.crypto24' extension to encrypted files.
•Implements a double extortion scheme, threatening to leak stolen data if ransom is not paid.
•Uses legitimate administrative tools like PSExec and AnyDesk for lateral movement.
•Targets various sectors including manufacturing, healthcare, and legal services.