Was Open Range Field Services hit by ransomware?

Open Range Field Services was listed by the Sarcoma ransomware operation (United States), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the Sarcoma ransomware group?

Sarcoma is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the Open Range Field Services breach?

Sarcoma published data attributed to Open Range Field Services (~37 GB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Open Range Field Services

Claimed by Sarcoma · listed 2 years ago

37 GB

Data size

21m

Age

since listed · data leaked

Status timeline

ListedOct 19, 2024
Data leakeddate unknown

At a glance

Group: Sarcoma
Status: Data leaked
Country: United States
Sector: Energy
Listed on leak site: Oct 19, 2024
Data size: 37 GB

About the victim

AI dossier — public-source company profile

Open Range Field Services, LLC is a full-service surveying and mapping company established in 2014 and headquartered in Pampa, Texas. The company specializes in geospatial data solutions for energy and construction infrastructure development projects across the United States.

Industry: Surveying & Mapping Services
Address: Pampa, TX, United States
Founded: 2014

Attack summary

Severity: high — Confirmed exfiltration of 37 GB of significant business data (databases and files) from an energy-sector company; data has been published. Energy infrastructure surveying data could include sensitive geospatial and operational information relevant to critical infrastructure.

Sarcoma claims to have exfiltrated 37 GB of company data including files and SQL databases. The post indicates data publication on the group's leak site with no stated ransom demand.

high

Data the group says was taken

AI dossier — extracted from the leak post

SQL databases
Company files
Business records

What the group claims

Open Range Field Services Open Range Field Services, LLC was established in 2014 by Kent Dyson, James Kantola, and Ron Nelson. The company's headquarters is located in Pampa, TX. Open Range is a full-service surveying and mapping company specializing in the development and construction of energy-related infrastructure and assets. The organization's primary objective is to serve the energy and construction industry by providing responsive and innovative geospatial data solutions.Geo: USA - Leak size: 37 GB Archive - Contains: Files, SQL

Sources

Victim siteopenrangefieldservices.com

Source

Indexed 2 years 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 Sarcoma

Sarcoma is a relatively new ransomware group that emerged in October 2024, operating with apparent financial motivations and demonstrating a broad international targeting approach with at least 140 documented victims across multiple countries and industry sectors. The group's origin and affiliations remain unclear due to its recent emergence, with no publicly documented connections to established ransomware families or confirmation of whether they operate as an independent entity or through a Ransomware-as-a-Service model. Limited public information is available regarding Sarcoma's specific attack methodologies, initial access vectors, or technical capabilities, though their targeting patterns suggest opportunistic rather than highly selective victim selection across diverse industries including manufacturing, business services, agriculture and food production, and technology sectors. The group has shown a particular focus on victims in the United States while also maintaining operations against targets in Italy, Canada, Germany, and Australia, though no specific high-profile attacks or record ransom demands have been publicly documented by major security firms or law enforcement agencies. Given the group's recent emergence in late 2024, Sarcoma appears to remain active with no reported law enforcement disruptions or confirmed rebranding activities at this time. The group has been linked to 150 public disclosures across our corpus. First observed on a leak site on October 9, 2024; most recent post May 12, 2026. The operation is currently active.

Also tracked as: Sarcoma Ransomware Group.

Timeline of this disclosure

October 19, 2024Open Range Field Services listed by Sarcomaon the group's public leak site

Data size: 37 GB

Other recent disclosures by Sarcoma

Sarcoma has been linked to 150 public victims on Darkfield. A sample of the most recent:

See the full Sarcoma 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, Open Range Field Services is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Sarcoma means Open Range Field Services 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, CISA (United States), as required for your jurisdiction.
Monitor for the data appearing on Sarcoma'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.