Disclosure context

About kazu

The Kazu ransomware group is a relatively new threat actor that emerged in November 2025, operating with apparent financial motivations based on their targeting patterns across multiple sectors and geographic regions. Given their recent emergence and limited public documentation, details about their country of origin and potential affiliations remain unclear, though their targeting of diverse international victims suggests either a ransomware-as-a-service model or an independent operation with broad reach capabilities. With only nine documented victims to date, specific details about Kazu's attack methodology, initial access vectors, and encryption techniques have not been extensively documented by major threat intelligence organizations, though their targeting spans healthcare, public sector, financial services, and technology organizations across the United States, Colombia, South Africa, Nigeria, and Great Britain. The group's recent emergence means there are no widely reported major campaigns or high-profile incidents documented by established security research organizations like Mandiant, CISA, or the FBI. As of the latest available intelligence, Kazu appears to remain active given their very recent first observation date, though their limited victim count and recent emergence make definitive assessments of their operational status preliminary. The group has been linked to 13 public disclosures across our corpus. First observed on a leak site on November 11, 2025; most recent post May 21, 2026. The operation is currently active.

Timeline of this disclosure

May 20, 2026Natclar (S.G. Natclar S.A.C.) listed by kazuon the group's public leak site

Sector and geography

Geographically, Natclar (S.G. Natclar S.A.C.) is reported in Peru, a country with 3 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

← All victims

Natclar (S.G. Natclar S.A.C.)

Claimed by kazu · listed 1 day ago

Age

since listed · listed for ransom

Status timeline

Listed
May 20, 2026

Current state: Listed for ransom

At a glance

Group: kazu
Status: Listed for ransom
Country: Peru
Listed on leak site: May 20, 2026

About the victim

AI dossier — public-source company profile

S.G. Natclar S.A.C. (trading as Natclar) is a Peruvian company. Based on the name and regional context, it is believed to operate in staffing, outsourcing, or related business services in Peru. No public website content was available to confirm further operational details.

Industry: Staffing & Workforce Solutions

Attack summary

Severity: low — The post is a bare listing only, with no proof files, no stated ransom, no data volume, and no description of what was exfiltrated or whether systems were encrypted.

The ransomware group 'kazu' has listed S.G. Natclar S.A.C. as a victim in what appears to be a data breach disclosure, grouped alongside other healthcare and government targets. No specific data volume, ransom demand, or encryption claim is detailed in the post.

low

What the group claims

Data breach

The leak post

captured from the group's site

A847 8A8C E2A4 3B58 FB12 D678 3BA4 C334 C85C EE56
HealthDaq Dublin based healthcare recruitment platform Data Breach
Spain - HT Médica Data breach
Peru - Natclar (S.G. Natclar S.A.C.)
SA - Gauteng Provincial Government
Statistics South Africa – Official National Data and Insights Portal

Sources

Leak posthttp://6czlbd2jfiy6765fbnbnzuwuqocg57ebvp3tbm35kib425k4qnmiiiqd.onion

Source

Indexed 1 day 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.