Ransomware victim disclosure

Ueno Fine Chemicals Industry

Claimed by nightspire · listed 7 days ago

Age

since listed · data leaked

Status timeline

Listed
May 24, 2026
Data leaked

At a glance

Group: nightspire
Status: Data leaked
Country: TH
Sector: Manufacturing
Listed on leak site: May 24, 2026

About the victim

AI dossier — public-source company profile

Ueno Fine Chemicals Industry is a Japanese manufacturer specializing in chemical products and LCP (Liquid Crystal Polymer) resins. The company operates two core business divisions focused on research, development, and production of specialty chemicals and advanced materials, including parabens and functional polymers.

Industry: Fine Chemicals Manufacturing

Attack summary

Severity: high — Confirmed exfiltration and publication of sensitive business data including financial records, HR data, and commercial information from a manufacturing company. No regulated personal data confirmed, but financial and HR records represent significant business sensitivity.

The nightspire group claims to have exfiltrated financial & accounting records, human resources data, and sales & marketing information from Ueno Fine Chemicals Industry. The group has published data from this breach.

high

Data the group says was taken

AI dossier — extracted from the leak post

Financial & Accounting Records
Human Resources Data
Sales & Marketing Information

What the group claims

- Financial & Accounting Records- Human Resources- Sales & Marketing

Sources

Victim sitewww.ueno-fc.co.jp/english

Source

Indexed 7 days 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.

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Disclosure context

About nightspire

Nightspire is a ransomware group that first emerged in March 2025 and appears to be primarily financially motivated, having targeted over 215 victims in a relatively short operational timeframe. The group's origin and affiliations remain unclear due to limited public documentation from major cybersecurity organizations, though their targeting patterns suggest a broad opportunistic approach rather than nation-state backing. Based on available victim data, Nightspire appears to employ common ransomware attack vectors targeting organizations across multiple sectors, with a particular focus on manufacturing, technology, healthcare, and construction industries, while demonstrating a geographic preference for victims in the United States, India, Taiwan, France, and Hong Kong. The group's rapid victim acquisition rate since their March 2025 emergence suggests an active and potentially effective operational capability, though specific technical details about their attack methodology, encryption techniques, or extortion tactics have not been publicly documented by major threat intelligence firms. Given the recent emergence of this group and limited public reporting from established cybersecurity organizations like CISA, FBI, or Mandiant, Nightspire remains an active threat with insufficient public documentation to fully assess their operational sophistication or organizational structure. The group has been linked to 275 public disclosures across our corpus. First observed on a leak site on March 12, 2025; most recent post May 26, 2026. The operation is currently active.

Timeline of this disclosure

May 24, 2026Ueno Fine Chemicals Industry listed by nightspireon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 2,458 disclosures indexed across all operators we track. Geographically, Ueno Fine Chemicals Industry is reported in TH, a country with 45 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.