Disclosure context

About Karakurt

Karakurt is a ransomware group that emerged in December 2022, operating primarily as a data extortion threat actor with financial motivations rather than traditional file encryption. The group's origin and affiliations remain largely undocumented by major cybersecurity agencies, though their operational patterns suggest they function as an independent entity rather than a confirmed ransomware-as-a-service operation. Karakurt employs data theft and extortion tactics, focusing on exfiltrating sensitive information from victim networks before demanding payment under threat of public disclosure, representing a pure extortion model that bypasses traditional encryption-based ransomware approaches. The group has targeted 74 known victims across multiple sectors, with particular focus on healthcare, education, manufacturing, energy, and professional services organizations, primarily affecting entities in the United States, United Kingdom, Germany, Singapore, and India. Based on available reporting from established cybersecurity agencies and researchers, Karakurt appears to remain active as of recent assessments, though comprehensive intelligence on their specific attack vectors, tools, and major campaigns remains limited in publicly documented sources from CISA, FBI, and major security research organizations. The group has been linked to 74 public disclosures across our corpus. First observed on a leak site on December 11, 2022; most recent post September 22, 2023. The operation is currently inactive.

Timeline of this disclosure

April 18, 2023Ozarks Community Hospital listed by Karakurton the group's public leak site

Data size: 40 GB

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 1,779 disclosures indexed across all operators we track. Geographically, Ozarks Community Hospital is reported in United States, a country with 7,392 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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Ozarks Community Hospital

Claimed by Karakurt · listed 3 years ago

40 GB

Data size

37m

Age

since listed · data leaked

Status timeline

Listed
Apr 18, 2023
Data leaked

At a glance

Group: Karakurt
Status: Data leaked
Country: United States
Sector: Healthcare
Listed on leak site: Apr 18, 2023
Data size: 40 GB

About the victim

AI dossier — public-source company profile

Ozarks Community Hospital (OCH) is a community hospital located in Gravette, Arkansas, operating out of the former Gravette Medical Center Hospital Building. Founded in 1930, it provides healthcare services to the surrounding Ozarks region. The hospital operates under the domain ochsystem.com.

Industry: Community Hospital & Healthcare Services
Address: Gravette, AR, United States
Founded: 1930

Attack summary

Severity: critical — Confirmed exfiltration of regulated healthcare data (medical records, diagnoses) combined with PII at scale including Social Security numbers of employees and third-party partners, constituting likely HIPAA-covered PHI and sensitive financial records from a hospital.

Karakurt claims to have exfiltrated approximately 40 GB of internal data from Ozarks Community Hospital, including detailed medical records, employee personal information, accounting and finance documents, and partner employee data such as Social Security numbers and addresses; no encryption is mentioned.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Medical records
Test results and diagnoses
Employee personal information
Accounting and finance documents
Partner/third-party employee SSNs
Partner/third-party employee addresses

What the group claims

Founded in 1930 the Ozarks Community Hospital (OCH) of Gravette, AR is located in what was previously known as the Gravette Medical Center Hospital Building. They do not care much about their personnel and patients personal information. We have about 40GB of their internal information including detailed medical data (medical records, tests, diagnosis), employees personal information and accounting/finance documents that are very interesting to explore. They even lost their partners' employee information (ssns, addresses and so on).Coming soon!

Sources

Source

Indexed 3 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.