Disclosure context

About medusalocker

MedusaLocker is a ransomware group that emerged in November 2022, operating with primarily financial motivations and targeting organizations across multiple sectors including technology, energy, healthcare, and manufacturing. The group's origin and specific affiliations remain largely undocumented in public threat intelligence reports, though their operational patterns suggest they may operate as part of the broader ransomware-as-a-service ecosystem that has proliferated in recent years. With 51 documented victims primarily concentrated in the United States, United Arab Emirates, Germany, Canada, and Antigua and Barbuda, MedusaLocker appears to focus on opportunistic targeting rather than specific geographic or sectoral specialization. The group's attack methodology and specific technical capabilities have not been extensively documented by major threat intelligence organizations, though their targeting of critical infrastructure sectors including healthcare and energy suggests they likely employ common ransomware tactics such as network encryption and potential data exfiltration. No major high-profile attacks or significant law enforcement disruptions against MedusaLocker have been publicly reported by CISA, FBI, or other major security agencies. The current operational status of MedusaLocker remains unclear due to limited public documentation, though the relatively recent emergence date suggests the group may still be active or have transitioned to other operations. The group has been linked to 67 public disclosures across our corpus. First observed on a leak site on November 15, 2022; most recent post May 5, 2026. The operation is currently active.

Timeline of this disclosure

May 5, 2026CEAGESP / Netfeirasp listed by medusalockeron the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Agriculture and Food Production sector, which has 536 disclosures indexed across all operators we track. Geographically, CEAGESP / Netfeirasp is reported in BR, a country with 189 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

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CEAGESP / Netfeirasp

Claimed by medusalocker · listed 15 days ago

15d

Age

since listed · data leaked

Status timeline

Listed
May 5, 2026
Data leaked

At a glance

Group: medusalocker
Status: Data leaked
Country: BR
Sector: Agriculture and Food Production
Listed on leak site: May 5, 2026

About the victim

AI dossier — public-source company profile

CEAGESP (Companhia de Entrepostos e Armazéns Gerais de São Paulo) is a Brazilian state-owned company operating one of the largest wholesale produce distribution and warehousing networks in Latin America, headquartered in São Paulo. Netfeirasp is its digital platform for managing wholesale market transactions and participants. The company facilitates the distribution of fresh produce, grains, and food commodities across Brazil.

Industry: Wholesale Produce & Agricultural Distribution
Address: Av. Dr. Gastão Vidigal, 1946 - Vila Leopoldina, São Paulo - SP, 05699-900, Brazil
Employees: 501-1000
Founded: 1969

Attack summary

Severity: high — Data has been published (disclosed status: data_published) from a state-linked critical food infrastructure operator handling large-scale agricultural commerce; credential and account data exposure from a major public wholesale market network constitutes significant business and potentially regulated data exposure.

The Medusa Locker group claims to have compromised CEAGESP/Netfeirasp and published data, with the disclosed status indicating data has been released. The post references domain-level access to netfeirasp.ceagesp and associated accounts including demarchibrasil.com.br.

high

Data the group says was taken

AI dossier — extracted from the leak post

Domain account credentials (netfeirasp.ceagesp)
User accounts (demarchibrasil.com.br)
Wholesale market participant records
Internal network data

What the group claims

Brazilian produce wholesale market network. Domain netfeirasp.ceagesp (CEAGESP). Also demarchibrasil.com.br accounts.

The leak post

captured from the group's site

File Manager File Manager home page BARAAAI Data is being prepared for publication. BAPAMAI Data is being prepared for publication. BAUARAI Data is being prepared for publication. BAVADAI Data is being prepared for publication. BAVACAI Data is being prepared for publication. BAVAQAI Data is being prepared for publication. Raycolighting DEMO 3137 S Alameda Street, Los Angeles, CA 90058, USA $10 000 Organization with 2 emails extracted. Domain: raycolighting.com baralai Data is being prepared for publication. CEAGESP / Netfeirasp DEMO São Paulo, Brazil $20 000 Brazilian produce wholesale market network. Domain netfeirasp.ceagesp (CEAGESP). Also demarchibrasil.com.br accounts. Colegio María Inmaculada (CMI) DEMO Moravia, San José, Costa Rica $50000 Catholic school in Moravia, Costa Rica. Domain cmi.local / mariainmaculada.ed.cr. Servers: CMI-DC01, CMI-APP, CMI-HTTP2, main-server1/2. Académie de Montpellier / CSJM DEMO Béziers, Occitanie, France $15000 French public school network. Domain CSJM.BEZIERS, part of Académie de Montpellier (ac-montpellier.fr). Occitanie region (laregion.fr). Teacher and admin staff credentials. Palmers Relocations DEMO Victoria, Australia $63 000 Australian …

Sources

Victim sitenetfeirasp.ceagesp
Leak posthttp://t33zoj4qwv455fog7qnb2azi5xcdxkixughmmduzbw2rtdgryqfbh6id.onion/company/bajarai/

Source

Indexed 15 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.