Disclosure context

About d4rk4rmy

d4rk4rmy is a recently emerged ransomware group that was first observed in July 2025, operating with apparent financial motivations based on their targeting of high-value sectors including financial services and technology organizations. With only 18 documented victims to date, the group appears to be in its early operational phase, demonstrating a geographically diverse targeting approach across the United States, Taiwan, Brazil, Poland, and Monaco, with particular focus on financially lucrative sectors such as financial services, technology, transportation and logistics, and hospitality and tourism industries. Given the group's recent emergence and limited public documentation from established threat intelligence sources, specific details regarding their country of origin, operational structure, attack methodologies, encryption techniques, and whether they operate as a Ransomware-as-a-Service model remain largely undetermined by major cybersecurity organizations such as CISA, FBI, or prominent security research firms. The group's current operational status appears active based on the recent timeline of their emergence, though comprehensive analysis of their capabilities, notable campaigns, and potential law enforcement actions is limited due to insufficient publicly available intelligence from authoritative sources. The group has been linked to 18 public disclosures across our corpus. First observed on a leak site on July 7, 2025; most recent post August 16, 2025. The operation is currently inactive.

Timeline of this disclosure

August 3, 2025CASINO DE MONTE-CARLO listed by d4rk4rmyon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Hospitality and Tourism sector, which has 159 disclosures indexed across all operators we track. Geographically, CASINO DE MONTE-CARLO is reported in MC, a country with 2 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

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Monte-Carlo Société des Bains de Mer (SBM)

listed as CASINO DE MONTE-CARLO · Claimed by d4rk4rmy · listed 10 months ago

Age

since listed · data leaked

Status timeline

Listed
Aug 3, 2025
Data leaked

At a glance

Group: d4rk4rmy
Status: Data leaked
Country: MC
Sector: Hospitality and Tourism
Listed on leak site: Aug 3, 2025

About the victim

AI dossier — public-source company profile

Monte-Carlo Société des Bains de Mer is a prestigious hospitality and gaming conglomerate founded in 1863, headquartered in Monaco. It operates an iconic collection of luxury properties including four hotels (Hôtel de Paris, Hôtel Hermitage, Monte-Carlo Bay, Monte-Carlo Beach), multiple casinos, fine dining restaurants, spas, and entertainment venues.

Industry: Luxury Hospitality & Gaming
Address: Monaco
Founded: 1863

Attack summary

Severity: high — Confirmed data publication by ransomware group targeting a major luxury hospitality and gaming enterprise handling sensitive guest/customer information; the breach affects a high-profile international company with significant reputational and regulatory implications.

The d4rk4rmy group claims to have accessed and exfiltrated data from Casino de Monte-Carlo's systems. The specific nature of exfiltrated data and operational impact are not detailed in the truncated leak post.

high

Data the group says was taken

AI dossier — extracted from the leak post

customer records
business systems data

What the group claims

https://www.montecarlosbm.com/ Monte-Carlo Société des Bains de Mer (SBM) is a prestigious hospitality group founded in 1863, renowned for shaping Monaco’s identity as a global symbol of luxury and sophistication. The company operates a collection of iconic properties in Monte Carlo,…

Sources

Victim sitewww.montecarlosbm.com
Leak posthttp://d4rkd2fybtclo44hss2dpqpw7gmofboxhruax2az3uejw7puxxbpkvqd.onion/?p=265

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.