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Petrobras / SAExploration

Claimed by Everest · listed 8 months ago

7m
Age
since listed · data leaked

Status timeline

  1. ListedNov 17, 2025
  2. Data leakeddate unknown

At a glance

Group
Everest
Status
Data leaked
Country
Brazil
Sector
Energy
Listed on leak site
Nov 17, 2025

About the victim

AI dossier — public-source company profile

Petrobras is Brazil's state-controlled multinational petroleum corporation headquartered in Rio de Janeiro, one of the largest energy companies in the world, engaged in exploration, production, refining, and distribution of oil and gas. SAExploration is a seismic data acquisition and processing company that has operated in the Americas and internationally, providing services to the oil and gas exploration sector. The leak post associates both entities, suggesting either a joint project or shared data environment was targeted.

Industry
Oil & Gas Exploration

Attack summary

Severity: high — Petrobras is a major state-controlled energy company; any confirmed data publication involving its operational or corporate data constitutes significant business and potentially national-security-relevant exposure. The 'data_published' status indicates actual disclosure beyond a mere listing, warranting a high severity classification even without granular data inventory details.

The Everest ransomware group claims to have published data ('data_published' status) related to Petrobras and/or SAExploration, though the truncated leak post provides no specific detail on whether encryption, exfiltration, or both occurred, nor the volume or nature of the data exposed.

high

Original description

AI-summarised, not from the leak post

Petrobras is a state-owned Brazilian multinational corporation involved in the oil, gas, and energy industry. The company specializes in exploration, production, and distribution of oil, gas, and derivative products. SAExploration is an American energy company that provides seismic data acquisition services for the oil and gas industry. They specialize in deep water ocean bottom projects and challenging land operations.

The leak post

captured from the group's site
© 2026, All rights reserved
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Sources

Source

Indexed 8 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 Everest

Everest is a financially-motivated ransomware group that emerged in September 2021, operating with a focus on profit-driven extortion campaigns against organizations primarily in the United States and Europe. The group's country of origin and specific affiliations remain undocumented in public threat intelligence reporting, though their operational patterns suggest they likely operate as an independent entity rather than a formal ransomware-as-a-service model. Limited public documentation exists regarding Everest's specific attack methodologies, initial access vectors, or technical capabilities, though their victim profile indicates they employ standard ransomware tactics targeting a diverse range of sectors including healthcare, technology, business services, and manufacturing organizations. Since their emergence, Everest has claimed responsibility for attacks against 339 victims across multiple countries, with the United States, United Kingdom, Italy, Germany, and Spain representing their primary geographic targets, though no specific high-profile incidents or major ransoms have been publicly documented by law enforcement or major security firms. As of current reporting, Everest appears to remain an active threat actor, though the limited public intelligence available suggests they operate as a lower-tier ransomware group compared to more prominent and well-documented criminal organizations. The group has been linked to 369 public disclosures across our corpus. First observed on a leak site on September 9, 2021; most recent post May 29, 2026. The operation is currently active.

Timeline of this disclosure

  • November 17, 2025Petrobras / SAExploration listed by Evereston the group's public leak site

Other recent disclosures by Everest

Everest has been linked to 369 public victims on Darkfield. A sample of the most recent:

See the full Everest 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, Petrobras / SAExploration is reported in Brazil, a country with 404 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Everest means Petrobras / SAExploration 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 Everest'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.