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Onex Corporation

listed as ONEX CANADA ASSET MANAGEMENT INC · Claimed by D4Rk4Rmy · listed 11 months ago

11m
Age
since listed · data leaked

Status timeline

  1. ListedAug 7, 2025
  2. Data leakeddate unknown

At a glance

Group
D4Rk4Rmy
Status
Data leaked
Country
Canada
Sector
Financial Services
Listed on leak site
Aug 7, 2025

About the victim

AI dossier — public-source company profile

Onex Corporation is a Canadian private equity platform operating across the United States, Canada, and Europe. It focuses on upper-middle market investments with a disciplined, sector-specialized approach to private equity investing.

Industry
Private Equity & Investment Management
Founded
1983

Attack summary

Severity: medium — Financial services company with likely access to sensitive client/investment data. Data published status confirms exfiltration, but no proof files, data inventory, or breach scope details are visible in the provided excerpt. Moderate sensitivity sector without evidence of regulatory PII at scale.

The d4rk4rmy group claims to have compromised Onex Canada Asset Management Inc and published data. No specific details on encryption, exfiltration method, or data categories are provided in the leak post excerpt.

medium

What the group claims

https://onex.com Onex Partners is a private equity platform focused on the upper-middle market in the United States, Canada, and Europe. Our successful track record is built on deep sector specialization and a disciplined, hands-on approach to private equity investing. they…

Sources

Source

Indexed 11 months 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.

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Disclosure context

About d4rk4rmy

d4rk4rmy is a recently emerged ransomware group that was first observed in July 2025, operating with apparent financial motivations based on their targeting of high-value sectors including financial services and technology organizations. With only 18 documented victims to date, the group appears to be in its early operational phase, demonstrating a geographically diverse targeting approach across the United States, Taiwan, Brazil, Poland, and Monaco, with particular focus on financially lucrative sectors such as financial services, technology, transportation and logistics, and hospitality and tourism industries. Given the group's recent emergence and limited public documentation from established threat intelligence sources, specific details regarding their country of origin, operational structure, attack methodologies, encryption techniques, and whether they operate as a Ransomware-as-a-Service model remain largely undetermined by major cybersecurity organizations such as CISA, FBI, or prominent security research firms. The group's current operational status appears active based on the recent timeline of their emergence, though comprehensive analysis of their capabilities, notable campaigns, and potential law enforcement actions is limited due to insufficient publicly available intelligence from authoritative sources. The group has been linked to 18 public disclosures across our corpus. First observed on a leak site on July 7, 2025; most recent post August 16, 2025. The operation is currently inactive.

Timeline of this disclosure

  • August 7, 2025ONEX CANADA ASSET MANAGEMENT INC listed by d4rk4rmyon the group's public leak site

Other recent disclosures by d4rk4rmy

d4rk4rmy has been linked to 18 public victims on Darkfield. A sample of the most recent:

See the full d4rk4rmy dossier →

Sector and geography

This disclosure adds to ransomware activity in the Financial Services sector, which has 1,184 disclosures indexed across all operators we track. Geographically, ONEX CANADA ASSET MANAGEMENT INC is reported in Canada, a country with 1,055 ransomware disclosures in our corpus.

If your organisation is affected

A listing by d4rk4rmy means ONEX CANADA ASSET MANAGEMENT INC appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

  • Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
  • Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
  • Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
  • Report the incident to your national CERT, CCCS (Canada), as required for your jurisdiction.
  • Monitor for the data appearing on d4rk4rmy's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

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.