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Ransomware group

Yurei ransomware

3 victims listed on the Yurei leak site across 3 countries. Most recent disclosure .

Victims
3
0% of all tracked
Countries
3
Most: Switzerland
Sectors
3
Most: Energy
First seen
Sep 2025
In this database

ThreatAI analysis

Compiled from the ransomware.live profile for Yurei and from this database. Figures and technique mappings are quoted from the source data, not inferred.

Who Yurei is

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.

Recorded activity

Disclosures attributed to Yurei in this database run from September 2025 to September 2025, totalling 3 victims — 0% of everything tracked here. Yurei has listed victims in 3 countries in this database, most often Switzerland, followed by Nigeria and Sri Lanka. The sectors appearing most in its listings are Energy, Consumer Services, Agriculture and Food Production.

Tooling observed in Yurei operations

  • Everything.exe
  • SoftPerfect NetScan
  • PsExec
  • SDelete
  • Invoke-TheHash
  • NetExec
  • Rubeus
  • WinPEAS
  • AnyDesk

Software reported in use by Yurei. Most are legitimate administration or transfer utilities; their presence in an environment is a signal to investigate, not proof of compromise.

YARA detection rules

yurei.yar 
/*
yurei ransomware
*/

rule yurei_Ransomnote
{
    meta:
        author = "ransomware.live"
        family = "ransomware.yurei"
        description = "Detects yurei ransomware ransom note or artifact"
        date = "2026-05-04"
        severity = 7
        score = 70

    strings:
        $name1 = "yurei" ascii nocase
        $name2 = "YUREI" ascii
        $onion  = "yurei.onion" ascii nocase

    condition:
        any of them
}

Community-contributed rules for Yurei, reproduced as published. Test them against your own corpus before relying on them: rule quality and false-positive behaviour vary by author.

Threat actor analysis

Yurei has disclosed 3 victims on its leak site, 0% of all ransomware listings tracked in this database. Its earliest disclosure here dates to September 2025.

The group has listed organisations in 3 countries, most often in Switzerland (1 victims), followed by Nigeria, Sri Lanka.

By industry, its listings concentrate in Energy, Consumer Services, Agriculture and Food Production — sectors that hold sensitive data or cannot tolerate long outages, both of which raise the pressure to pay.

Like most current ransomware operations, Yurei is likely to use double extortion: data is stolen before files are encrypted, and organisations that refuse to pay are named on the leak site with the stolen data as leverage.

Generated from public leak-site disclosures aggregated via the ransomware.live API and updated automatically.

Yurei victims 3

Organization Disclosed
noblecorp.net
CHSwitzerland
www.thepromisenig.com
NGNigeria
www.midcity.lk
LKSri Lanka

Frequently asked questions

What is Yurei ransomware?

Yurei is a ransomware threat group that has claimed 3 victims since its first known activity in September 2025. The group operates by infiltrating target networks, exfiltrating data, encrypting files, and threatening to publish stolen data on a dark web leak site if the ransom is not paid.

How many victims has Yurei attacked?

Yurei has claimed 3 victims in our database, representing 0% of all tracked ransomware attacks. The most targeted countries are Switzerland, Nigeria, Sri Lanka.

Which countries does Yurei target?

Yurei has attacked organizations in 3 countries. The top targeted countries are: Switzerland, Nigeria, Sri Lanka.

Which industries does Yurei target?

Yurei most frequently targets the Energy, Consumer Services, Agriculture and Food Production sectors based on victim disclosures in our database.

Is Yurei still active?

Yurei's most recent victim disclosure in our database was on September 9, 2025. Ransomware groups frequently rebrand or go dormant; monitor this page and our ransomware map for the latest activity.