Disclosure context

About Cuba

The Cuba ransomware group is a financially-motivated cybercriminal organization that emerged in February 2021 and has since conducted attacks against at least 105 known victims globally. The group operates as an independent ransomware operation with suspected ties to Russian-speaking cybercriminals, though their exact country of origin remains unconfirmed by law enforcement agencies. Cuba ransomware operators primarily gain initial access through compromised Remote Desktop Protocol (RDP) credentials, exploitation of Microsoft Exchange vulnerabilities, and phishing campaigns, subsequently deploying their custom Cuba ransomware payload which encrypts victim files while exfiltrating sensitive data before encryption as part of their double extortion strategy. The group has particularly targeted organizations in the United States, United Kingdom, France, Australia, and Belgium, with a notable focus on critical infrastructure sectors including healthcare, financial services, manufacturing, and energy companies. According to FBI reporting, the Cuba ransomware group has demanded ransom payments ranging from hundreds of thousands to millions of dollars from their victims. As of recent threat intelligence assessments, the Cuba ransomware group remains active and continues to pose a significant threat to organizations across multiple sectors and geographic regions. The group has been linked to 105 public disclosures across our corpus. First observed on a leak site on February 3, 2021; most recent post February 1, 2024. The operation is currently inactive.

Also tracked as: COLDDRAW, Fidel.

Timeline of this disclosure

November 14, 2023diagnostechs listed by Cubaon the group's public leak site

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, diagnostechs 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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DiagnosTechs, Inc.

listed as diagnostechs · Claimed by Cuba · listed 3 years ago

30m

Age

since listed · data leaked

Status timeline

Listed
Nov 14, 2023
Data leaked

At a glance

Group: Cuba
Status: Data leaked
Country: United States
Sector: Healthcare
Listed on leak site: Nov 14, 2023

About the victim

AI dossier — public-source company profile

DiagnosTechs, Inc. is a clinical and research laboratory headquartered in Federal Way, Washington, established in 1987. The company pioneered saliva-based hormone testing for cortisol in routine clinical practice and now offers a broad range of noninvasive saliva, stool, and urine test panels covering hormones, gastrointestinal health, food sensitivities, microbes, pathogens, and parasites. It serves healthcare providers and their patients across the United States.

Industry: Clinical & Research Laboratory Services (Diagnostic Testing)
Address: 840 S. 333rd St, Federal Way, WA 98003
Founded: 1987

Attack summary

Severity: critical — DiagnosTechs is a healthcare laboratory handling regulated patient medical and diagnostic data (including hormone profiles, GI health results, and food sensitivity data). A confirmed data publication by the Cuba group in the healthcare sector constitutes exfiltration of regulated, sensitive medical PII at scale, meeting the critical severity threshold.

The Cuba ransomware group has published data from DiagnosTechs under a 'data_published' disclosure status, indicating exfiltration of company data. Given the healthcare sector context, the stolen data likely includes patient and provider records, laboratory results, and related sensitive medical information.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Patient records
Provider records
Laboratory test results
Hormone and diagnostic test data
Billing and insurance information
Employee records

What the group claims

HistoryEstablished in 1987, DiagnosTechs was the first laboratory to introduce saliva hormone testing into routine clinical practice. In 1995, DiagnosTechs added saliva and stool-based gastrointestinal and food sensitivity testing,...

Sources

Victim sitediagnostechs.com

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.