Yurei is a ransomware operation that encrypts victim files and leverages data exfiltration to pressure payment (double extortion).
Yurei is a ransomware operation that encrypts victim files and leverages data exfiltration to pressure payment (double extortion). Recent analyses highlight a Go-based ransomware payload with a documented encryption structure, an explicit operational model, and multiple data-transfer methods for exfiltration, signaling rising sophistication and adaptability to defenses.
The Yurei ransomware group, identified in early September 2025, employs a typical ransomware operational model. This includes infiltrating corporate networks, encrypting data, deleting backups, and demanding ransom for…
The Yurei ransomware group, identified in early September 2025, employs a typical ransomware model that infiltrates corporate networks, encrypts data, deletes backups, and demands ransom for stolen information. The…