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 36 public disclosures across our corpus. First observed on a leak site on April 23, 2025; most recent post April 8, 2026. The operation is currently active.

Timeline of this disclosure

October 1, 2025miraense.com listed by gunraon 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, miraense.com is reported in Brazil, a country with 319 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

Mirae'N SeohaeEnergy Co., Ltd.

listed as miraense.com · Claimed by gunra · listed 8 months ago

Age

since listed · data leaked

Status timeline

Listed
Oct 1, 2025
Data leaked

At a glance

Group: gunra
Status: Data leaked
Country: Brazil
Sector: Not Found
Listed on leak site: Oct 1, 2025

About the victim

AI dossier — public-source company profile

Mirae'N SeohaeEnergy Co., Ltd. (주식회사 미래엔서해에너지) is a South Korean city gas (urban natural gas) distribution company headquartered in Dangjin-si, Chungcheongnam-do. The company supplies natural gas to residential and industrial customers in its licensed supply territory and is a subsidiary of the Mirae'N group. It offers customer billing, gas installation, and safety management services.

Industry: City Gas (Natural Gas) Distribution & Utility Services
Address: 충청남도 당진시 시곡로 348(시곡동 80-5), Dangjin-si, Chungcheongnam-do, South Korea

Attack summary

Severity: high — Confirmed exfiltration of customer PII from a utility/energy infrastructure operator, acknowledged publicly by the company and reported to South Korean regulatory authorities; operational systems were compromised via ransomware affecting critical energy infrastructure.

The GUNRA ransomware group claims an attack on Mirae'N SeohaeEnergy; the company's own public notices confirm a ransomware attack occurred and that customer personal information was exfiltrated, with the incident under investigation by the Personal Information Protection Commission (PIPC) and KISA.

high

Data the group says was taken

AI dossier — extracted from the leak post

Customer personal information (PII)
Billing and usage records
Customer contact details

Original description

AI-summarised, not from the leak post

N/A

Sources

Victim sitemiraense.com
Leak posthttp://gunrabxbig445sjqa535uaymzerj6fp4nwc6ngc2xughf2pedjdhk4ad.onion/miraense

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.