Ransomware group profile · #155 by claimed victims

Kazu ransomware

Kazu is an emerging ransomware group active since September 2025 that employs double-extortion tactics, targeting government, healthcare, and financial organizations primarily in Southeast Asia, the Middle East, and Latin America, with notable claimed breaches including Dubai's Ports, Customs and Free Zone Corporation with 1.94 TB exfiltrated.

Active First seen Nov 2025

21Victims claimed on leak sites

12Victims in the last 30 days

12Victims in the last 90 days

12Countries hit

1Leak-site URLs tracked, 1 online

7 Sep 2026Latest claim recorded

Victimology

Who Kazu claims to have breached, from 21 leak-site posts recorded by VULONE.

Claims per month last 12 months

Top sectors

Healthcare11

Government & Defense2

Education2

Professional Services2

Technology1

Other1

Financial Services1

Top countries

United States5

Brazil2

Mexico2

Canada2

Colombia2

New Zealand1

Argentina1

Saudi Arabia1

Latest claimed victims 12 most recent

Victim	Sector	Country	Claimed
MSM Unify: Global Education Platform - CA msmunify.com	Education	CA	7 Sep 2026
Spirit Cultural Exchange - US spiritexchange.com	Education	US	5 Sep 2026
Redacted redacted.com	Not Found	—	25 Aug 2026
PappyJoe: Healthcare Management System pappyjoe.com	Healthcare	US	23 Aug 2026
Instituto Ferrero de Neurología y Sueño ifn.com.ar	Healthcare	AR	23 Aug 2026
Brazil Mobilemed: Cloud PACS Platform mobilemed.com.br	Healthcare	BR	23 Aug 2026
Canada Yocale: Appointment Management System yocale.com	Professional Services	CA	23 Aug 2026
PawlyClinic: Digital Veterinary Care Platform pawlyclinic.com	Healthcare	US	23 Aug 2026
Dr Akbar Niazi Teaching Hospital anth.pk	Healthcare	PK	23 Aug 2026
Centro Médico Especializado OSI: Healthcare Solutions centromedicoosi.com	Healthcare	MX	23 Aug 2026
Meducar: Telemedicine and Patient Management System meducar.com	Healthcare	BR	23 Aug 2026
ConsultorioMovil: Telemedicine and Healthcare System consultoriomovil.net	Healthcare	MX	23 Aug 2026

All 21 Kazu victims, searchable

Full victim list with claim posts, domains, timing and exports, plus the negotiation chats and leak-site screenshots VULONE archives for this crew.

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Tactics, techniques and procedures

ATT&CK technique mapping for Kazu is in progress. Victimology, infrastructure status and leak-site tracking are live above.

Indicators, detections and the full playbook

Hashes, C2 addresses, onion services, Sigma and YARA detections per technique, and the negotiation transcripts are available to signed-in analysts.

See full IOCs

Frequently asked

Is Kazu ransomware still active?

Kazu is tracked as active. The most recent leak-site claim VULONE recorded is dated 7 September 2026. 12 victims were claimed in the last 30 days.

How many victims has Kazu claimed?

VULONE has recorded 21 leak-site victim claims attributed to Kazu since November 2025, across 12 countries and 8 sectors.

Which industries does Kazu target?

The sectors most often named on the Kazu leak site are Healthcare, Government & Defense, Education.

Which countries are most affected by Kazu?

Most Kazu victims recorded by VULONE are located in United States, Brazil, Mexico.

Where does VULONE get Kazu victim data?

Claims are collected continuously from the group's own leak sites and cross-checked with ransomware.live and RansomLook. A claim is the group's assertion, not a confirmed breach.

Other ransomware groups

Victim claims are collected from leak sites and enrichment partners (ransomware.live, RansomLook) and represent the group's own assertions, not confirmed breaches. Profile last updated 16 September 2026. Questions or corrections: [email protected].