Disclosure context

About TiMc

TiMc is an emerging ransomware group first observed in April 2026, with limited public documentation indicating financially-motivated cybercriminal activity targeting organizations primarily in Spain and Argentina. Given the recent emergence and limited victim count of three known cases, there is insufficient public intelligence from major security agencies or researchers to definitively establish the group's country of origin, operational structure, or potential affiliations with other threat actors. The group has demonstrated a targeting preference for business services and healthcare sectors based on observed victim patterns, though their specific attack methodologies, initial access vectors, encryption techniques, and whether they employ data exfiltration or multiple extortion tactics remain undocumented in available threat intelligence reporting. No major campaigns, high-profile incidents, or law enforcement actions against TiMc have been publicly reported by CISA, FBI, Mandiant, or other established security research organizations. The group's current operational status remains unclear due to limited visibility and the nascent nature of their observed activities. The group has been linked to 5 public disclosures across our corpus. First observed on a leak site on April 9, 2026; most recent post May 15, 2026. The operation is currently active.

Timeline of this disclosure

April 9, 2026oncologica listed by TiMcon 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, oncologica is reported in Spain, a country with 212 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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oncologica

Claimed by TiMc · listed 1 month ago

41d

Age

since listed · data leaked

Status timeline

Listed
Apr 9, 2026
Data leaked

At a glance

Group: TiMc
Status: Data leaked
Country: Spain
Sector: Healthcare
Listed on leak site: Apr 9, 2026

About the victim

AI dossier — public-source company profile

Oncologica is a Spain-based precision oncology company focused on personalized cancer care. The company operates SaaS-based oncology knowledge platforms, including a product referred to as Oncomine KB, and maintains clinical and patient-related databases. Their services are positioned at the intersection of genomics, oncology diagnostics, and digital health.

Industry: Precision Oncology & Cancer Care

Attack summary

Severity: critical — The breach involves a healthcare/oncology provider with confirmed exfiltration of over 1 TB of data including patient-linked databases (COVID-19), sensitive medical SaaS source code, and PII — all regulated categories under GDPR and healthcare data protection laws in Spain/EU. Data has been marked as published.

The TiMc group claims to have breached Oncologica's intranet and gained full control of it, exfiltrating over 1 TB of data including a COVID-19 database, SaaS source code (Oncomine KB), and other PII. The group states a full data publication will follow after a deadline.

critical

Data the group says was taken

AI dossier — extracted from the leak post

COVID-19 patient database
Oncomine KB SaaS source code
Personally Identifiable Information (PII)
Internal intranet data

What the group claims

We breached into their intranet and have total control of it , with 1TB+ data exfiltrated including covid-19 database and SaaS src code like oncomine KB and Other PII Full data breach after the DDL

Sources

Victim sitewww.oncologica.com

Source

Indexed 1 month 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.