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新興商事株式会社 (Shinko Shoji Co., Ltd.)

listed as Shinko Shoji · Claimed by Gunra · listed 1 year ago

14m
Age
since listed · data leaked

Status timeline

  1. ListedApr 23, 2025
  2. Data leakeddate unknown

At a glance

Group
Gunra
Status
Data leaked
Country
Japan
Sector
Technology
Listed on leak site
Apr 23, 2025

About the victim

AI dossier — public-source company profile

Shinko Shoji is a comprehensive real estate enterprise founded in 1935 (Showa 10) based in Tokyo, Japan. The company operates across residential house development, commercial building and condominium development, real estate sales and brokerage, and property management services.

Industry
Real Estate Development & Property Management
Address
〒130-0013 東京都墨田区錦糸1-2-1アルカセントラル12階 (Aruka Central 12F, 1-2-1 Kinshi, Sumida Ward, Tokyo 130-0013, Japan)
Founded
1935

Attack summary

Severity: low — Post contains only a listing/category claim with no proof files, no operational impact stated, and no description of exfiltrated or encrypted data.

The gunra group claims to have targeted Shinko Shoji and lists the company under a 'Real Estate' category in their leak post. No specific attack details, encryption claims, or data exfiltration evidence are provided in the truncated post.

low

What the group claims

Real Estate

Sources

Source

Indexed 1 year 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 gunra

Gunra is an emerging ransomware group that was first observed in April 2025, operating with primarily financial motivations based on their targeting patterns across multiple high-value sectors. The group's origin and affiliations remain unclear due to limited public documentation from major security vendors, though their geographic targeting suggests possible international operations given their focus on victims across Brazil, South Korea, Japan, Canada, and Egypt. With approximately 20 known victims to date, Gunra appears to follow conventional ransomware attack methodologies typical of financially-motivated cybercriminal groups, though specific technical details regarding their initial access vectors, encryption methods, or use of double extortion tactics have not been publicly documented by major threat intelligence sources. The group demonstrates opportunistic targeting behavior, focusing primarily on manufacturing organizations while also compromising entities in healthcare, technology, and financial services sectors, suggesting they may operate opportunistically rather than with highly specialized sector expertise. Given the recent emergence of this group in April 2025 and limited public reporting from established threat intelligence organizations such as CISA, FBI, or major security vendors, Gunra's current operational status, technical capabilities, and long-term threat trajectory require continued monitoring as more intelligence becomes available. The group has been linked to 46 public disclosures across our corpus. First observed on a leak site on April 23, 2025; most recent post July 10, 2026. The operation is currently active.

Timeline of this disclosure

  • April 23, 2025Shinko Shoji listed by gunraon the group's public leak site

Other recent disclosures by gunra

gunra has been linked to 46 public victims on Darkfield. A sample of the most recent:

See the full gunra dossier →

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 3,549 disclosures indexed across all operators we track. Geographically, Shinko Shoji is reported in Japan, a country with 220 ransomware disclosures in our corpus.

If your organisation is affected

A listing by gunra means Shinko Shoji 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 gunra'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.