Yurei
Since Sep 5, 2025, Yurei has listed 3 organizations on its leak site.
Listings per month
- Total listings
- 3
- First listing
- Sep 5, 2025
- Latest listing
- Sep 9, 2025
- MITRE ATT&CK techniques
- 0
Yurei is a ransomware group first observed in September 2025 whose payload is a minimally modified fork of the open-source Prince-Ransomware, using ChaCha20 encryption and propagating across SMB shares, primarily targeting food manufacturing, transportation, and IT sectors in Sri Lanka and Nigeria.
It posted no listings in the last 12 months.
Most targeted country: Nigeria, with 1 listings (33% of the total).
Most targeted sector: Energy & Utilities, with 1 listings (33% of the total).
Targeted countries
Showing 3 of 3 results
What does a ransomware group do?
Ransomware groups break into corporate networks, move data out and encrypt systems. If the ransom is not paid, they list the organization on a leak site and threaten to publish the data.
What should you do if your organization is listed on a leak site?
- Record the listing and any published sample files; do not visit the leak site from the corporate network.
- Isolate affected systems and preserve logs without deleting them.
- Determine which data left the organization; if personal data is involved, review notification obligations with your legal team.
- Make any decision about the ransom demand together with legal, management and incident response.
- Do not bring systems back online before the attacker’s entry point is closed.
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