Was Gmg Mining Supplies hit by ransomware?

Gmg Mining Supplies was listed by the Sarcoma ransomware operation (South Africa), 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 Gmg Mining Supplies breach?

Sarcoma published data attributed to Gmg Mining Supplies (~8 GB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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GMG Mining Machines and Supplies

listed as Gmg Mining Supplies · Claimed by Sarcoma · listed 2 years ago

8 GB

Data size

21m

Age

since listed · data leaked

Status timeline

ListedOct 9, 2024
Data leakeddate unknown

At a glance

Group: Sarcoma
Status: Data leaked
Country: South Africa
Listed on leak site: Oct 9, 2024
Data size: 8 GB

About the victim

AI dossier — public-source company profile

GMG Mining Machines and Supplies is a South African company specializing in trackless mobile machinery (TMM) for opencast and underground mining operations. They build, rebuild, and rent TMM equipment, supply parts and spares, and provide on-site labour services to mining clients nationally and internationally.

Industry: Mining Equipment & Machinery Supply

Attack summary

Severity: high — Confirmed exfiltration and publication of 8 GB of business data including databases; mining operations data could impact client operations and expose sensitive business intelligence.

Sarcoma claims to have exfiltrated 8 GB of data from GMG Mining, including files and SQL databases. The group has published the stolen data.

high

Data the group says was taken

AI dossier — extracted from the leak post

Files
SQL databases
Business records
Operational data

What the group claims

GMG Mining Machines and Supplies (GMG) is a South African company that specializes in trackless mobile machinery (TMM). We build and rebuild a variety of trackless mobile machinery for both opencast and underground mining operations with buyers nationally and internationally. In addition, we offer monthly rentals of these TMM machines which is unique to the mining industry. When it comes to parts, spares and/or components, we have it and can deliver and/or offer consignment stock to ensure that your operations continue without delay. GMG boasts an enormous amount of combined experience within the TMM industry, empowering it to offer and provide innovative solutions that would assist you (and your stakeholders) in your endeavours to not only reach but far exceed your production targets. Coupled with this is our ability to save you money and headaches. Another crucial part of any mining organisation are the personnel that operate, manage, and maintain various TMMs that are essentially the ‘driving force’ behind the production volumes at many mines and a mismanagement of this can single handedly bring any mining enterprise to its knees. Hence, we cannot emphasise enough the importance of having a strong, knowledgeable, ambitious, and driven team that takes pride in their work. We believe that we are your solution!.Geo: South Africa - Leak size: 8 GB Archive - Contains: Files, SQL

Sources

Victim sitegmgmining.co.za

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 9, 2024Gmg Mining Supplies listed by Sarcomaon the group's public leak site

Data size: 8 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

Geographically, Gmg Mining Supplies is reported in South Africa, a country with 52 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Sarcoma means Gmg Mining Supplies 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, ECS-CSIRT (South Africa), 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.