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Analysis of Encryption Structure of Yurei Ransomware Go

Asec.Ahnlab •ATCP • November 10, 2025

The Yurei ransomware group is a new group that was first publicly identified in early September 2025. This group adopts a typical ransomware operation model that infiltrates corporate networks, encrypts data, deletes backups, and then demands a ransom for the stolen information. While there is no clear evidence of their involvement in Ransomware as a […]

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Yurei Ransomware Group Emerges with Data Encryption and Exfiltration Tactics 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 stolen information, indicating a significant threat to organizations. 3 sources 65

Analysis of Encryption Structure of Yurei Ransomware Go

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Extracted Entities

Attack Types (1)

Ransomware Groups (1)