Disclosure context

About yurei

Yurei is an emerging ransomware group first observed in September 2025, operating with apparent financial motivations based on their targeting patterns and victim selection. The group's origin and potential affiliations remain unclear due to limited public documentation, though their diverse geographical targeting across Switzerland, Sri Lanka, and Nigeria suggests either opportunistic attacks or access to varied initial compromise vectors. Given the recent emergence and limited intelligence available, their attack methodology, specific tools, and encryption techniques have not been extensively documented by major security firms or government agencies. The group appears to focus on energy sector targets where data is available, though their small victim count of three documented cases suggests they are either highly selective, newly operational, or operating below the radar of major threat intelligence providers. Yurei remains active as of their recent emergence, though the limited public intelligence makes it difficult to assess their operational tempo, sophistication level, or long-term persistence in the ransomware landscape. The group has been linked to 3 public disclosures across our corpus. First observed on a leak site on September 5, 2025; most recent post September 9, 2025. The operation is currently inactive.

Timeline of this disclosure

September 8, 2025www.thepromisenig.com listed by yureion the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Not Found sector, which has 4,859 disclosures indexed across all operators we track. Geographically, www.thepromisenig.com is reported in NG, a country with 3 ransomware disclosures in our corpus.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.

Ransomware victim disclosure

← All victims

The Promise Nigeria Ltd

listed as www.thepromisenig.com · Claimed by yurei · listed 8 months ago

Age

since listed · data leaked

Status timeline

Listed
Sep 8, 2025
Data leaked

At a glance

Group: yurei
Status: Data leaked
Country: NG
Sector: Not Found
Listed on leak site: Sep 8, 2025

About the victim

AI dossier — public-source company profile

The Promise Nigeria Ltd is a fast-food and catering company based in Port Harcourt, Nigeria, established in 2000 and incorporated in 2003. The company offers freshly prepared meals and large-scale corporate catering solutions, and is described as a leading brand in Nigeria's quick service dining sector. It has built a strong reputation across Port Harcourt and surrounding regions.

Industry: Fast Food & Catering Services
Address: Port Harcourt, Nigeria
Founded: 2000

Attack summary

Severity: medium — Data has been published (disclosed status: data_published), indicating confirmed exfiltration, but no specific sensitive regulated data categories (e.g. medical, financial, government) or scale of PII are confirmed from the available post content.

The Yurei ransomware group claims to have attacked The Promise Nigeria Ltd, with the disclosure status listed as data_published, indicating exfiltration and/or publication of company data. No ransom amount or specific data size was stated in the post.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Company business data
Potentially customer records
Potentially corporate catering client information

What the group claims

The Promise Nigeria Ltd is a leading brand in Nigeria’s fast-food and catering industry, renowned for its dedication to quality, freshness, and customer satisfaction. Established in 2000 and incorporated in 2003, the company has steadily expanded its presence, earning a strong reputation as one of the most trusted names in quick service dining and integrated catering solutions. From freshly prepared meals to large-scale corporate catering, The Promise has become a household name across Port Harcourt and beyond.

Sources

Source

Indexed 8 months ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.