Ransomware group profile · #141 by claimed victims

Onyx ransomware

Onyx is a ransomware group first observed in April 2022, based on the Chaos ransomware builder, that is notably destructive — files larger than 2MB are overwritten with random data rather than encrypted, making recovery impossible even after ransom payment — claiming approximately 13 victims across six countries.

Active First seen Apr 2022

28Victims claimed on leak sites

0Victims in the last 30 days

0Victims in the last 90 days

2Countries hit

0Leak-site URLs tracked

21 Nov 2022Latest claim recorded

Victimology

Who Onyx claims to have breached, from 28 leak-site posts recorded by VULONE.

Claims per month last 12 months

Top sectors

Government & Defense5

Retail & E-Commerce5

Healthcare4

Manufacturing3

Agriculture and Food Production2

Professional Services2

Financial Services2

Technology1

Top countries

Mexico1

Brazil1

Latest claimed victims 12 most recent

Victim	Sector	Country	Claimed
www.artisticstairs.com artisticstairs.com	Retail & E-Commerce	—	21 Nov 2022
www.wayan.com.mx wayan.com.mx	Retail & E-Commerce	MX	21 Nov 2022
www.candcfarmsupply.com candcfarmsupply.com	Agriculture and Food Production	—	21 Nov 2022
www.ackermanplumbinginc.com ackermanplumbinginc.com	Professional Services	—	21 Nov 2022
www.semaphorehq.com semaphorehq.com	Professional Services	—	21 Nov 2022
www.baltholding.eu baltholding.eu	Manufacturing	—	21 Nov 2022
www.pacmaritime.com pacmaritime.com	Transportation	—	21 Nov 2022
www.waynefamilypractice.com waynefamilypractice.com	Healthcare	—	21 Nov 2022
www.advantagedirectcare.com advantagedirectcare.com	Healthcare	—	21 Nov 2022
www.cucafresca.com.br cucafresca.com.br	Retail & E-Commerce	BR	21 Nov 2022
www.arisaseguros.com arisaseguros.com	Financial Services	—	21 Nov 2022
www.jaspercountysheriffoffice.com jaspercountysheriffoffice.com	Government & Defense	—	21 Nov 2022

All 28 Onyx 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 Onyx 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.

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Frequently asked

Is Onyx ransomware still active?

Onyx is tracked as active. The most recent leak-site claim VULONE recorded is dated 21 November 2022.

How many victims has Onyx claimed?

VULONE has recorded 28 leak-site victim claims attributed to Onyx since April 2022, across 2 countries and 12 sectors.

Which industries does Onyx target?

The sectors most often named on the Onyx leak site are Government & Defense, Retail & E-Commerce, Healthcare.

Which countries are most affected by Onyx?

Most Onyx victims recorded by VULONE are located in Mexico, Brazil.

Where does VULONE get Onyx 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].