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Leak-site post naming Cassias MG Government, captured by ThreatCluster

Cassias MG Government

emperador

Ransomware leak-site victim intelligence · PT

Data size
720.0 MB
Files
7
Views
28,568
Posted
Sep 19, 2026
Country
Brazil
Industry
government

Summary

Written by ThreatClusterfrom file listing, victim profile, leak post, screenshot, ransom note, our reporting

Emperador claims to have exfiltrated 720.0 MB of data from Cassias MG Government (cassia.mg.gov.br) in Brazil, across 6 files. The data categories claimed include personal data, medical (SUS), RG/CIN, birth certificate, and CPF (Brazilian identity numbers), with sample filenames such as Banco do Brasil.pdf and cassias_mg_gov_br.zip. The leak post is published, and the ransom note states a deadline to negotiate and that the data originate from Cassias MG Government departments.

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

Victim profile

Domains
cassia.mg.gov.br

What was taken

network commitment, from government credentials to justice panels, such as access to the financial sector, police, personal data, medical (SUS), RG(CIN), BIRTH CERTIFICATE, CPF (identity number in Brazil) among other data from CASSIAS.MG.GOV departments, we will give you a deadline to negotiate with us!

Data categories
personal datamedical (SUS)RG(CIN)BIRTH CERTIFICATECPF (identity number in Brazil)financial data
File types seen
pdf × 6zip × 1
Sample files (6)
Banco do Brasil.pdf
UBS TIPO I CÁSSIA-UBS 1 CÁSSIA.pdf
Débitos Agrupados por Origem de Lançamento_2026-09-04_17_02_47 (1).pdf
Investimento FUNDEB mes 11.pdf
extrato bancario.pdf
CNH Prefeito.pdf

Ransom note

Published by the group on their leak site, reproduced verbatim.

network commitment, from government credentials to justice panels, such as access to the financial sector, police, personal data, medical (SUS), RG(CIN), BIRTH CERTIFICATE, CPF (identity number in Brazil) among other data from CASSIAS.MG.GOV departments, we will give you a deadline to negotiate with us!

Also stated on the leak page

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

To Publish
cassias_mg_gov_br.zip (720.0 MB)
gallery_images
3

Leak-site images (5)

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

ThreatCluster capture
The image features a stylized red logo with angular shapes resembling a mask or a face, set against a white background.
onion leak page1.2 MB
Screenshot of a software interface displaying a list of workstations with columns for Name, Description, and Status.
onion leak page449 KB
Screenshot of a terminal displaying a PostgreSQL database listing with tables and materialized views.
onion leak page122 KB
The image shows a computer screen with a blue background featuring health-related icons, alongside a window displaying a detailed report with various data fields.
onion leak page567 KB

Negotiation

deadline to negotiate