Was Thunderbird Country Club hit by ransomware?

Thunderbird Country Club was listed by the Eldorado 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 Eldorado ransomware group?

Eldorado 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 Thunderbird Country Club breach?

Eldorado published data attributed to Thunderbird Country Club. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Thunderbird Country Club

Claimed by Eldorado · listed 2 years ago

20m

Age

since listed · data leaked

Status timeline

ListedNov 18, 2024
Data leakeddate unknown

At a glance

Group: Eldorado
Status: Data leaked
Country: United States
Sector: Hospitality and Tourism
Listed on leak site: Nov 18, 2024

About the victim

AI dossier — public-source company profile

Thunderbird Country Club is a prestigious private golf and country club established in 1951 in Rancho Mirage, California. It features an 18-hole golf course, tennis and pickleball facilities, wellness programs, and a clubhouse, serving an exclusive membership base from around the world.

Industry: Private Golf & Country Clubs
Address: 70-737 Country Club Dr, Rancho Mirage, CA 92270
Founded: 1951

Attack summary

Severity: low — No proof files, screenshots, or data samples are mentioned in the leak post. No specific data categories are identified, and no operational impact or data exfiltration is confirmed.

The Eldorado group claims to have attacked Thunderbird Country Club, but the leak post provides no details on the scope of the attack, what data was compromised, or whether exfiltration or encryption occurred.

low

Original description

AI-summarised, not from the leak post

Thunderbird Country Club, located in Rancho Mirage, California, is a prestigious private golf and country club renowned for its rich history and exclusive membership. Established in 1951, it features a classic 18-hole golf course, tennis facilities, and a luxurious clubhouse. The club is known for its elegant ambiance, social events, and a strong sense of community among its members.

Sources

Victim sitethunderbirdcc.org

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 Eldorado

Eldorado is a recently emerged ransomware group first observed in June 2024, operating with apparent financial motivations and demonstrating a relatively broad targeting approach across multiple countries and industry sectors. The group's origin and affiliations remain largely undocumented in public threat intelligence reporting, with no confirmed links to state actors or established ransomware families, though their operational patterns suggest they likely operate as an independent entity rather than a formal RaaS model. Specific technical details regarding Eldorado's initial access vectors, encryption methods, and data exfiltration capabilities have not been extensively documented in public security research, though their targeting of over 112 victims across diverse sectors including business services, technology, manufacturing, and financial services suggests they employ opportunistic attack methodologies rather than highly specialized techniques. The group has demonstrated a geographic focus primarily on the United States and Canada, with additional activity observed in Italy, UAE, and Croatia, though no specific high-profile campaigns or major ransomware incidents have been publicly attributed to this group by federal agencies or major security firms. As of current reporting, Eldorado appears to remain active with no documented law enforcement disruptions or confirmed rebranding activities, though the limited public visibility of their operations suggests they may be a smaller-scale operation compared to established ransomware families. The group has been linked to 112 public disclosures across our corpus. First observed on a leak site on June 6, 2024; most recent post January 22, 2025. The operation is currently inactive.

Also tracked as: el dorado.

Timeline of this disclosure

November 18, 2024Thunderbird Country Club listed by Eldoradoon the group's public leak site

Other recent disclosures by Eldorado

Eldorado has been linked to 112 public victims on Darkfield. A sample of the most recent:

See the full Eldorado dossier →

Sector and geography

This disclosure adds to ransomware activity in the Hospitality and Tourism sector, which has 452 disclosures indexed across all operators we track. Geographically, Thunderbird Country Club is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Eldorado means Thunderbird Country Club 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 Eldorado'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.