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Ransomware Victim Manufacturing

MITACHI

Ransomware attack by Direwolf · Disclosed November 26, 2025 · 🇯🇵 Japan

mitachi.co.jp

Date Disclosed
Nov 26, 2025
2025
Threat Group
Direwolf
124 total victims
Country
🇯🇵 Japan
Industry
Manufacturing

ThreatAI Analysis

Compiled from this incident record and the threat intelligence profile for Direwolf. Figures and technique mappings are quoted from the source data, not inferred.

About the Direwolf group

Dire Wolf is a sophisticated human-operated ransomware group first documented in May 2025, written in Golang using Curve25519/ChaCha20 encryption, targeting manufacturing and technology sectors across 13+ countries with ransoms up to $500,000, operated by a tight core team rather than a broad affiliate program. Direwolf has listed 75 victims since April 2025.

Incident Analysis

MITACHI was targeted by Direwolf ransomware, one of the most active ransomware groups in our database with 124 confirmed victims globally. The attack was disclosed on November 26, 2025, when MITACHI appeared on the group's dark web leak site.

MITACHI is based in Japan , operating in the Manufacturing sector. Japan ranks #11 globally for ransomware attacks, with 266 victims in our database.

Sector context: Manufacturing companies are frequently targeted because production downtime directly translates to financial loss. Ransomware operators exploit this time-sensitivity to demand higher ransoms and faster payment.

Direwolf typically employs a double extortion model: first exfiltrating sensitive data from the victim's systems, then deploying ransomware to encrypt files. Victims face two simultaneous threats — paying to restore access and paying to prevent publication of stolen data. The group's leak site publishes victim names and exfiltrated data as leverage.

Data source: This incident record is sourced from public ransomware group leak site disclosures aggregated via the ransomware.live API. Disclosure date reflects when the victim was published on the leak site, which may differ from the initial date of compromise. This platform does not publish or link to stolen data. Last data update: Sep 5, 2026 12:00 UTC.

Frequently Asked Questions

Was MITACHI attacked by ransomware?

Yes. MITACHI was listed as a victim of the Direwolf ransomware group on November 26, 2025. The organisation is based in Japan and operates in the Manufacturing sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked MITACHI?

MITACHI was attacked by Direwolf ransomware. Direwolf is one of the most active ransomware groups, having claimed 124 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the MITACHI ransomware attack occur?

The ransomware attack on MITACHI was disclosed on November 26, 2025. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the MITACHI ransomware attack?

The specific data stolen from MITACHI has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Manufacturing organisation, MITACHI likely held sensitive business data, client information, and operational records.

How can organisations protect against Direwolf attacks?

To defend against Direwolf and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.