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[EVIDENCE PACK 2]ASKUL

Claimed by Ransomhouse · listed 8 months ago

8m
Age
since listed · data leaked

Status timeline

  1. ListedNov 10, 2025
  2. Data leakeddate unknown

At a glance

Group
Ransomhouse
Status
Data leaked
Country
Japan
Listed on leak site
Nov 10, 2025

About the victim

AI dossier — public-source company profile

ASKUL Corporation (アスクル) is a Japanese B2B e-commerce company headquartered in Koto-ku, Tokyo, specialising in the online distribution of office supplies, medical and care products, industrial and workplace materials, food and beverages, and IT equipment. The company primarily serves corporate and institutional customers across Japan through its online platform and catalogue-based ordering system. ASKUL is a publicly listed company and one of Japan's leading business-to-business supply distributors.

Industry
B2B E-Commerce / Office & Industrial Supplies Distribution
Address
東京都江東区, 〒135-0061, Japan
Employees
1001-5000
Founded
1993

Attack summary

Severity: high — Data is marked as published by the ransomware group, indicating confirmed exfiltration. ASKUL handles large volumes of B2B customer PII, order records, and potentially financial/medical procurement data at significant scale, representing meaningful business and personal data exposure.

RansomHouse claims ASKUL prioritised financial interests over the protection of partner and customer data, and that the company chose to conceal the fact of compromise. The group has listed ASKUL as a confirmed victim with data published, implying exfiltration of company data.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Customer data
  • Partner/supplier data
  • Business operational data
  • Order and transaction records
  • Employee information

What the group claims

ASKUL Corporation, founded in 1963 and headquartered in Tokyo, is a leading Japanese e-commerce company serving both businesses (B2B) and consumers (B2C). It offers office supplies, daily goods, medical products, and logistics services through platforms such as ASKUL, SOLOEL ARENA, and LOHACO. The company operates its own distribution centers, ensuring fast delivery and efficient supply chain management. ASKUL also provides additional services like printing, office design, and digital business solutions. The company emphasizes sustainability, digital transformation, and recycling initiatives.

The leak post

captured from the group's site
Below is a list of companies that either have considered their financial gain to be above the interests of their partners / individuals who have entrusted their data to them or have chosen to conceal the fact that they have been compromised.

Sources

Source

Indexed 8 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 Ransomhouse

Ransomhouse is a ransomware group that emerged in June 2021, operating primarily for financial gain through extortion campaigns targeting organizations across multiple sectors globally. The group's origin and specific affiliations remain unclear based on publicly available intelligence, though their operational patterns suggest they function as an independent cybercriminal organization rather than a traditional ransomware-as-a-service model. Ransomhouse employs double extortion tactics, stealing sensitive data before deploying their ransomware payload and threatening to publish the information on their leak site if victims refuse to pay the demanded ransom. The group has demonstrated a broad targeting approach, with documented attacks against 187 victims primarily concentrated in the United States, China, United Kingdom, Italy, and Spain, focusing heavily on healthcare, technology, business services, and manufacturing sectors. While specific high-profile campaigns have not been extensively documented by major security firms, the group's consistent victim count and geographic distribution indicate sustained operational capability since their emergence. As of current reporting, Ransomhouse remains active with no known major law enforcement disruptions or confirmed rebranding efforts. The group has been linked to 210 public disclosures across our corpus. First observed on a leak site on June 1, 2021; most recent post June 29, 2026. The operation is currently active.

Also tracked as: RANSOM HOUSE.

Timeline of this disclosure

  • November 10, 2025[EVIDENCE PACK 2]ASKUL listed by Ransomhouseon the group's public leak site

Other recent disclosures by Ransomhouse

Ransomhouse has been linked to 210 public victims on Darkfield. A sample of the most recent:

See the full Ransomhouse dossier →

Sector and geography

Geographically, [EVIDENCE PACK 2]ASKUL is reported in Japan, a country with 220 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Ransomhouse means [EVIDENCE PACK 2]ASKUL 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, JPCERT/CC (Japan), as required for your jurisdiction.
  • Monitor for the data appearing on Ransomhouse'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.