Was Coalinga Regional Medical Center hit by ransomware?

Coalinga Regional Medical Center was listed by the worldleaks 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 worldleaks ransomware group?

worldleaks 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 Coalinga Regional Medical Center breach?

worldleaks published data attributed to Coalinga Regional Medical Center. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Coalinga Regional Medical Center

Claimed by Worldleaks · listed 1 year ago

11m

Age

since listed · data leaked

Status timeline

ListedJul 21, 2025
Data leakeddate unknown

At a glance

Group: Worldleaks
Status: Data leaked
Country: United States
Sector: Healthcare
Listed on leak site: Jul 21, 2025

About the victim

AI dossier — public-source company profile

Coalinga Regional Medical Center is a non-profit hospital in Coalinga, California, providing comprehensive medical services including emergency care, surgery, diagnostic imaging, rehabilitation, skilled nursing, pharmacy, and clinical laboratory services to the local community.

Industry: Healthcare - Hospital
Address: 1191 Phelps Ave. Coalinga, CA 93210

Attack summary

Severity: medium — Healthcare provider with presumed access to regulated PII (HIPAA-protected patient data); however, the leak post provides no proof files, no confirmed exfiltration evidence, and no data size estimate. Listing alone with healthcare sector involvement warrants medium rather than low.

The worldleaks group claims to have attacked Coalinga Regional Medical Center. No specific details are provided regarding whether data was exfiltrated, encrypted, or the nature of accessed information.

medium

Data the group says was taken

AI dossier — extracted from the leak post

patient records
medical histories
billing information
pharmacy data
laboratory results

Original description

AI-summarised, not from the leak post

Coalinga Regional Medical Center is a healthcare facility based in Coalinga, California. This non-profit organization is dedicated to providing medical care to the local community. It offers a variety of medical services such as surgery, emergency care, diagnostic imaging, and rehabilitation services. Despite facing financial difficulties, it continues its operations, remaining focused on improving the health and welfare of the residents in the region.

Sources

Victim sitewww.crmcmed.org
Leak posthttps://worldleaksartrjm3c6vasllvgacbi5u3mgzkluehrzhk2jz4taufuid.onion/companies/5233437072

Source

Indexed 1 year 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 worldleaks

Based on the limited available data, worldleaks is a recently emerged ransomware group that was first observed in May 2025 and appears to be primarily financially motivated, having claimed 134 victims in a relatively short timeframe since its emergence. The group's origin and organizational structure remain unclear, with no publicly documented information from major cybersecurity firms or law enforcement agencies regarding their country of origin, potential affiliations, or operational model. Their targeting patterns indicate a focus on English-speaking countries, particularly the United States, United Kingdom, and Canada, with additional activity observed in Germany and Japan, while their sector targeting shows a preference for healthcare, technology, manufacturing, and consumer services organizations. Due to the group's recent emergence and limited public documentation by established threat intelligence sources, specific details about their attack methodologies, encryption techniques, extortion tactics, and notable campaigns have not yet been comprehensively analyzed or reported by organizations such as CISA, FBI, or major cybersecurity research firms. The group appears to remain active as of the most recent observations, though comprehensive threat intelligence profiling awaits further analysis and documentation by established cybersecurity authorities. The group has been linked to 173 public disclosures across our corpus. First observed on a leak site on May 18, 2025; most recent post July 2, 2026. The operation is currently active.

Timeline of this disclosure

July 21, 2025Coalinga Regional Medical Center listed by worldleakson the group's public leak site

Other recent disclosures by worldleaks

worldleaks has been linked to 173 public victims on Darkfield. A sample of the most recent:

See the full worldleaks dossier →

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, Coalinga Regional Medical Center is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by worldleaks means Coalinga Regional Medical Center 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 worldleaks'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.