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EcoPetróleo

Claimed by Medusa · listed 9 months ago

379 Employees
Records
9m
Age
since listed · data leaked

Status timeline

  1. ListedOct 14, 2025
  2. Data leakeddate unknown

At a glance

Group
Medusa
Status
Data leaked
Country
Brazil
Sector
Energy
Listed on leak site
Oct 14, 2025
Records
379 Employees

About the victim

AI dossier — public-source company profile

EcoPetróleo is a Brazilian company operating in the energy sector, likely involved in petroleum extraction, distribution, or related services based on its name. No public site content was available to confirm operational details, scale, or exact headquarters location.

Industry
Oil & Gas / Petroleum

Attack summary

Severity: high — Status is data_published, meaning Medusa has already released data from a petroleum/energy sector company in Brazil, which likely contains significant business and potentially operational data; critical infrastructure context elevates severity even without confirmed PII specifics.

The Medusa ransomware group claims to have attacked EcoPetróleo and has published data (disclosed status: data_published), though the specific nature of the exfiltrated or encrypted data cannot be confirmed from the available leak post content due to a CAPTCHA block.

high

What the group claims

EcoPetróleo is dedicated to providing petroleum products while actively engaging in environmental conservation initiatives in the Dominican Republic. The company emphasizes its commitment to corporate social responsibility through projects such as turtle nesting, beach clean-ups, and recycling programs. Their intended clients include individuals and organizations that value sustainable practices and eco-friendly services. With a focus on community and environmental welfare, EcoPetróleo strives to enhance the quality of life for all. company is headquartered in Avenida Rómulo Betancourt No. 527, El Renacimiento, Santo Domingo, Distrito Nacional, República Dominicana. 379 Employees

The leak post

captured from the group's site
Human Verify Human verification required We need to ensure you're a real person. Please solve the captcha below to continue. Verify

Sources

Source

Indexed 9 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.

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Disclosure context

About Medusa

Medusa, also known as MedusaLocker, is a financially motivated ransomware group that emerged in November 2022 and has since compromised 568 known victims across multiple countries. The group's origin and specific affiliations remain unclear from publicly available intelligence, though their operational patterns suggest they function as an independent ransomware operation rather than a documented Ransomware-as-a-Service model. Medusa primarily targets organizations in the United States, United Kingdom, Canada, Italy, and Australia, with a focus on business services, healthcare, manufacturing, and technology sectors, employing typical ransomware tactics including data encryption and likely exfiltration for double extortion purposes, though specific technical methodologies and initial access vectors have not been extensively documented in public threat intelligence reports. While the group has maintained a relatively high victim count since its emergence, detailed information about specific notable campaigns, high-profile victims, or major ransom demands has not been widely reported by major cybersecurity firms or law enforcement agencies. As of current intelligence assessments, Medusa appears to remain active in the threat landscape, continuing to target organizations across their established geographic and sectoral preferences. The group has been linked to 635 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.

Also tracked as: MedusaLocker, MEDUSA LOCKER.

Timeline of this disclosure

  • October 14, 2025EcoPetróleo listed by Medusaon the group's public leak site
Records
379 Employees

Other recent disclosures by Medusa

Medusa has been linked to 635 public victims on Darkfield. A sample of the most recent:

See the full Medusa dossier →

Sector and geography

This disclosure adds to ransomware activity in the Energy sector, which has 652 disclosures indexed across all operators we track. Geographically, EcoPetróleo is reported in Brazil, a country with 404 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Medusa means EcoPetróleo appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

  • Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
  • Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
  • Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
  • Report the incident to your national CERT, CERT.br (Brazil), as required for your jurisdiction.
  • Monitor for the data appearing on Medusa's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

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.