Disclosure context

About direwolf

Direwolf is a ransomware group that emerged in May 2025 with primarily financial motivations, having targeted 71 known victims across multiple sectors and geographic regions. The group's origin and potential affiliations remain undocumented in public threat intelligence reports, with no confirmed information regarding whether they operate as a Ransomware-as-a-Service model or as an independent entity. Their attack methodology and technical capabilities have not been extensively documented by major cybersecurity firms or government agencies, though their targeting patterns indicate a focus on manufacturing, technology, healthcare, and transportation/logistics sectors across Malaysia, the United States, Thailand, Singapore, and Taiwan. No major high-profile campaigns or significant ransomware demands have been publicly attributed to this group by CISA, FBI, or established security researchers such as Mandiant. Given the group's recent emergence and limited public documentation, their current operational status and long-term threat posture remain unclear, requiring continued monitoring by the cybersecurity community to establish a more comprehensive threat profile. The group has been linked to 71 public disclosures across our corpus. First observed on a leak site on May 27, 2025; most recent post January 13, 2026. The operation is currently active.

Timeline of this disclosure

November 26, 2025MITACHI listed by direwolfon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Not Found sector, which has 4,859 disclosures indexed across all operators we track. Geographically, MITACHI is reported in Japan, a country with 108 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

Mitachi Co., Ltd.

listed as MITACHI · Claimed by direwolf · listed 6 months ago

Age

since listed · data leaked

Status timeline

Listed
Nov 26, 2025
Data leaked

At a glance

Group: direwolf
Status: Data leaked
Country: Japan
Sector: Not Found
Listed on leak site: Nov 26, 2025

About the victim

AI dossier — public-source company profile

Mitachi Co., Ltd. (ミタチ産業株式会社) is a Japanese comprehensive electronics trading company founded in 1972, specialising in semiconductors, electronic components, EMS, embedded products, design & development, equipment/auxiliary materials, and IoT/DX solutions. The company operates 15 offices, handles over 700 domestic and international manufacturers, and serves approximately 1,400 customers. It is a publicly listed firm that provides one-stop procurement and solution services to electronics product developers.

Industry: Electronics & Semiconductor Trading (Sogo Shosha)
Founded: 1972

Attack summary

Severity: high — Data has been published (confirmed exfiltration) from a publicly listed Japanese electronics trading company with over 1,400 business customers and 700+ manufacturer relationships; leaked trade data may include commercially sensitive supplier/customer records and business contracts.

The direwolf ransomware group claims to have attacked Mitachi Co., Ltd. and has published data ('data_published' status), with the leak post categorised under 'Trade'. No specific details on encryption or volume of exfiltrated data were stated in the truncated post.

high

Data the group says was taken

AI dossier — extracted from the leak post

Trade/business data

What the group claims

Trade

Sources

Victim sitemitachi.co.jp
Leak posthttp://direwolfcdkv5whaz2spehizdg22jsuf5aeje4asmetpbt6ri4jnd4qd.onion/api/public/articles/18

Source

Indexed 6 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.