Was Associated Endocrinologists hit by ransomware?

Associated Endocrinologists was listed by the Ransomhouse 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 Ransomhouse ransomware group?

Ransomhouse 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 Associated Endocrinologists breach?

Ransomhouse published data attributed to Associated Endocrinologists (~743 GB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Associated Endocrinologists

Claimed by Ransomhouse · listed 5 months ago

743 GB

Data size

$740

Ransom

demanded

Age

since listed · data leaked

Status timeline

ListedFeb 6, 2026
Data leakeddate unknown

At a glance

Group: Ransomhouse
Status: Data leaked
Country: United States
Sector: Healthcare
Listed on leak site: Feb 6, 2026
Data size: 743 GB
Ransom demanded: $740

About the victim

AI dossier — public-source company profile

Associated Endocrinologists is a specialized endocrinology clinic based in Michigan, USA, with over 40 years of experience treating diseases of the thyroid, parathyroid, pituitary, and adrenal glands, as well as diabetes. It is described as one of the largest endocrinology clinics in the Midwest, offering services including thyroid radiofrequency ablation, ultrasound-guided biopsy, and diabetes patient education. The practice employs board-certified physicians trained at prestigious institutions.

Industry: Endocrinology & Specialty Medical Practice
Employees: 21

Attack summary

Severity: critical — The victim is a specialty medical practice handling highly sensitive patient health data (endocrine conditions, diabetes, diagnostic results), constituting protected health information (PHI) under HIPAA. Encryption of systems at a healthcare provider with likely exfiltration of regulated medical and PII data meets the critical threshold.

RansomHouse claims to have encrypted systems at Associated Endocrinologists on 31 January 2025 and lists the case as 'EVIDENCE' with data not yet published. The post does not specify a confirmed exfiltration volume for this victim specifically, though the group's dashboard entry shows a volume placeholder of '-'.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Patient medical records
Endocrinology diagnostic data
Personal identifiable information (PII)
Physician and staff records
Diabetes patient education records
Billing and financial records

What the group claims

Associated Endocrinologists is a leading specialized endocrinology center in Michigan, specializing in diseases of the thyroid, parathyroid, pituitary, and adrenal glands, as well as diabetes. With over 40 years of experience, they are one of the largest endocrinology clinics in the Midwest, providing services such as thyroid radiofrequency ablation, ultrasound-guided biopsy, and diabetes patient education. Their team includes board-certified physicians trained at prestigious institutions, ensuring high-quality medical care for patients and the security of their personal data.

The leak post

captured from the group's site

```
{"data":[{"id":"a1894b76b7004c75a3a0845799af49956592e3d9","display":"animated","header":"HOT NEWS","info":" Trellix is a global cybersecurity company.","url":"","sort":1,"views":"436242"},{"id":"336b257f582b17573c97578efd4b22762bf77344","sort":2,"header":"Trellix (McAfee & FireEye)","url":"https://www.trellix.com/","private":"false","revenue":"1.5-2 B$","employees":"5000","info":"Trellix is a global cybersecurity company formed from the October 2021 merger of McAfee Enterprise and FireEye. It provides services to over 50,000 business and government customers worldwide, protecting more than 200 million endpoints. The companys open and native extended detection and response (XDR) platform helps organizations confronted by todays most advanced threats gain confidence in the protection and resilience of their operations. Trellix, along with an extensive partner ecosystem, accelerates technology innovation through machine learning and automation to empower over 40,000 business and government customers with living security","statusDate":"DEPENDS ON YOU","status":"EVIDENCE","published":"NOT YET","action":"Encrypted","actionDate":"17/04/2026","volume":"~","content":"cybersecurity.html"…

Sources

Source

Indexed 5 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 Ransomhouse

Ransomhouse is a ransomware group that emerged in June 2021, operating primarily for financial gain through extortion campaigns targeting organizations across multiple sectors globally. The group's origin and specific affiliations remain unclear based on publicly available intelligence, though their operational patterns suggest they function as an independent cybercriminal organization rather than a traditional ransomware-as-a-service model. Ransomhouse employs double extortion tactics, stealing sensitive data before deploying their ransomware payload and threatening to publish the information on their leak site if victims refuse to pay the demanded ransom. The group has demonstrated a broad targeting approach, with documented attacks against 187 victims primarily concentrated in the United States, China, United Kingdom, Italy, and Spain, focusing heavily on healthcare, technology, business services, and manufacturing sectors. While specific high-profile campaigns have not been extensively documented by major security firms, the group's consistent victim count and geographic distribution indicate sustained operational capability since their emergence. As of current reporting, Ransomhouse remains active with no known major law enforcement disruptions or confirmed rebranding efforts. The group has been linked to 210 public disclosures across our corpus. First observed on a leak site on June 1, 2021; most recent post June 29, 2026. The operation is currently active.

Also tracked as: RANSOM HOUSE.

Timeline of this disclosure

February 6, 2026Associated Endocrinologists listed by Ransomhouseon the group's public leak site

Data size: 743 GB
Ransom demanded: $740

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 2,600 disclosures indexed across all operators we track. Geographically, Associated Endocrinologists is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Ransomhouse means Associated Endocrinologists 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 Ransomhouse'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.