Was GYF hit by ransomware?

GYF was listed by the Sarcoma ransomware operation (Argentina) as a victim being extorted; data had not been published at the time of listing. 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.

Ransomware victim disclosure

← All victims

GYF

Claimed by Sarcoma · listed 2 months ago

286 GB

Data size

Age

since listed · listed for ransom

Status timeline

ListedMay 12, 2026

Current state: Listed for ransom

At a glance

Group: Sarcoma
Status: Listed for ransom
Country: Argentina
Sector: Business Services
Listed on leak site: May 12, 2026
Data size: 286 GB

About the victim

AI dossier — public-source company profile

GYF Inteligencia Digital is an Argentine IT company specializing in the design and development of software products and services for the financial market, including banking and fintech sectors. Based in Buenos Aires, the company reports over 30 years of experience, more than 50 satisfied clients, and 5 million+ hours of programming. Their product portfolio includes solutions such as Adintar, MODO integration, Maxwell BI, and cash dispenser systems.

Industry: Financial Technology & Banking Software
Address: 25 de Mayo 457, Piso 10, CABA C1002ABI, Buenos Aires, Argentina
Employees: 51-200

Attack summary

Severity: critical — GYF develops IT products and services exclusively for the financial market (banking and fintech); a 286 GB exfiltration from such a company is likely to contain highly sensitive financial data, client PII, banking integration credentials, and proprietary fintech infrastructure details, placing it at critical severity.

The Sarcoma ransomware group has listed GYF as a victim, claiming to possess 286 GB of data from the company. The post does not specify whether encryption was performed, but the data size implies exfiltration has occurred.

critical

Data the group says was taken

AI dossier — extracted from the leak post

286 GB archive of company data

What the group claims

Design and develop IT products and services for the financial market

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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Design and develop IT products and services for the financial market
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Propane Levac inc. specializes in the distribution of propane across Ontari…

Screenshot of the leak post

Sources

Victim sitehttps://gyf.com.ar/
Leak posthttp://sarcomawmawlhov7o5mdhz4eszxxlkyaoiyiy2b5iwxnds2dmb4jakad.onion

Source

Indexed 2 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 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

May 12, 2026GYF listed by Sarcomaon the group's public leak site

Data size: 286 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 Business Services sector, which has 3,796 disclosures indexed across all operators we track. Geographically, GYF is reported in Argentina, a country with 67 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Sarcoma means GYF appeared on a ransomware extortion site and is being pressured to pay before any publication. 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.
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.