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Leak-site post naming Master Manufacturing Co., Inc., captured by ThreatCluster

Master Manufacturing Co., Inc.

dark project

Ransomware leak-site victim intelligence

Data size
36 GB Data Analyzed
Files
61,469
Views
5,123
Posted
Sep 7, 2026
Country
United States
Industry
Manufacturing

Summary

Written by ThreatClusterfrom site fields, file listing, victim profile, leak post, screenshot

Dark project claims 1 TB of data across 116,438 files was taken from Ruhrpumpen, including personal information and financial information. The leak page identifies Ruhrpumpen (ruhrpumpen.com) as the victim—a Mexico-based manufacturing company with about $350 million in revenue. The leak post is published.

Describes what the group claims on its leak site. A listing is not confirmation that a breach occurred.

What was taken

Master Manufacturing Co specializing in custom metal stamping and production services has fallen victim to a significant cyberattack. Hackers reportedly exfiltrated 36 gigabytes of sensitive data from the company’s servers. The stolen information includes SQL databases containing personal data, as well as technical plans and schematics for custom metal parts. The breach raises serious concerns regarding intellectual property theft and potential privacy violations for employees and clients.

Data categories
personal dataplans and schematicsintellectual property

Also stated on the leak page

Fields this group publishes that do not map to a standard column. Labels are the site's own.

TOX_ID
243AAD0D1875CA4D48034E799785F2C9EA225E4466C87FA9B9297F7BEADC694478C7DE0A7639

Leak-site images (2)

Images from the victim's leak listing. Thumbnails scraped from the onion page are blurred by default — click a thumbnail to view.

ThreatCluster capture
Photograph of a check made out to Genesis Engineering Group, LLC for $20,000, with details including a date and signatures.
onion leak page662 KB

Negotiation

Tox 243AAD0D1875CA4D48034E799785F2C9EA225E4466C87FA9B9297F7BEADC694478C7DE0A7639