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

August 6, 2025Metro Heating listed by Sarcomaon the group's public leak site

Data size: 286 GB

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 2,458 disclosures indexed across all operators we track. Geographically, Metro Heating is reported in United States, a country with 7,392 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

← All victims

Metro Heating and Air

listed as Metro Heating · Claimed by Sarcoma · listed 10 months ago

286 GB

Data size

Age

since listed · data leaked

Status timeline

Listed
Aug 6, 2025
Data leaked

At a glance

Group: Sarcoma
Status: Data leaked
Country: United States
Sector: Manufacturing
Listed on leak site: Aug 6, 2025
Data size: 286 GB

About the victim

AI dossier — public-source company profile

Metro Heating and Air is a commercial and residential HVAC or construction services company operating in the United States. The company appears in a ransomware leak list alongside multiple other businesses across various sectors and geographies.

Industry: Commercial & Residential HVAC/Construction

Attack summary

Severity: medium — Confirmed exfiltration of 286 GB of data with no published proof files shown; data sensitivity is unknown but scale suggests material business impact. No regulated data categories explicitly mentioned.

Sarcoma claims to have exfiltrated 286 GB of data from Metro Heating and Air. No operational disruption or encryption confirmation is stated in the post.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Business records
Client information
Financial data
Operational files

What the group claims

Metro Heating If you are tired of sweating through the smoldering summer and freezing through the chilly winter, Metro Heating And Air Conditioning is waiting to hear from you! There is no need to deal with unnecessary discomfort when we are here to offer you top-of-the-line products with your satisfaction guaranteed. Whether you are looking for air conditioning units, central heating or both, we can help you with any of your repair or installation needs.Geo: USA - Leak size: NO DATA - Contains: NO DATA

The leak post

captured from the group's site

Site: https://gyf.com.ar/ Industry: Business Services GEO: Argentina 
Site: www.propanelevac.ca Industry: Gas Stations, Retail GEO: Canada 
Site: www.mecmatica.it Industry: Provider of software solutions GEO: Italy 
Site: bedachungen-soellner.de Industry: Commercial & Residential Construction GEO: Germany 
Site: charterindustrial.com Industry: Industrial Machinery & Equipment GEO: USA 
Site: msbuilders.com Industry: Commercial & Residential Construction GEO: USA 
Site: thermofin.de Industry: Building Materials GEO: Germany 
Site: miamimanagement.com Industry: Business Services GEO: USA 
Site: kwg-senftenberg.de Industry: Business Services GEO: Germany 
Site: f1-generation.com Industry: Apparel & Accessories Retail GEO: Germany 
Site: inoxlaghi.com Industry: Industrial Machinery & Equipment GEO: Italy 
Site: maselli.com Industry: Manufacturing innovative optical technology GEO: Italy 
Site: metroheatingandair.com Industry: Commercial & Residential Construction GEO: USA 
Site: hv.com.co Industry: Food & Beverage GEO: Colombia 

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Propane Levac inc. specializes in the distribution of propane across Ontari…

Source

Indexed 10 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.