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

August 18, 2025Seoul Guarantee Insurance listed by gunraon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Financial Services sector, which has 516 disclosures indexed across all operators we track. Geographically, Seoul Guarantee Insurance is reported in South Korea, a country with 32 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

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Seoul Guarantee Insurance

Claimed by gunra · listed 9 months ago

Age

since listed · data leaked

Status timeline

Listed
Aug 18, 2025
Data leaked

At a glance

Group: gunra
Status: Data leaked
Country: South Korea
Sector: Financial Services
Listed on leak site: Aug 18, 2025

About the victim

AI dossier — public-source company profile

Seoul Guarantee Insurance (SGI) is a South Korean financial services company established in 1969 specializing in credit and guarantee insurance for businesses. It offers trade insurance, construction guarantees, surety bonds, credit guarantees, export insurance, and retail insurance products to small and medium-sized enterprises.

Industry: Credit & Guarantee Insurance
Address: Seoul, South Korea
Founded: 1969

Attack summary

Severity: medium — Financial services company with access to sensitive business and customer data; disclosure status confirmed but no proof files, ransom demand, or specific data inventory detailed in the post.

The ransomware group gunra claims to have attacked Seoul Guarantee Insurance and published data. No specific details on encryption status, data exfiltration scope, or operational impact are provided in the disclosed post.

medium

Original description

AI-summarised, not from the leak post

Seoul Guarantee Insurance (SGI) is a South Korean company specializing in credit and guarantee insurance for businesses. It offers insurance cover for trade, construction, and small to medium-sized businesses. It also provides surety bonds, credit guarantees, and financial services. Other services include reinsurance, loan guarantees, export insurance, and retail insurance products. The company was established in 1969 and is based in Seoul, South Korea.

Sources

Victim sitesgic.co.kr
Leak posthttp://gunrabxbig445sjqa535uaymzerj6fp4nwc6ngc2xughf2pedjdhk4ad.onion/#

Source

Indexed 9 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.