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

April 8, 2026KUKJE PHARM CO.,LTD listed by gunraon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 1,779 disclosures indexed across all operators we track. Geographically, KUKJE PHARM CO.,LTD is reported in KR, a country with 15 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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KUKJE PHARM CO.,LTD

Claimed by gunra · listed 1 month ago

42d

Age

since listed · data leaked

Status timeline

Listed
Apr 8, 2026
Data leaked

At a glance

Group: gunra
Status: Data leaked
Country: KR
Sector: Healthcare
Listed on leak site: Apr 8, 2026

About the victim

AI dossier — public-source company profile

KUKJE PHARM CO., LTD is a South Korean pharmaceutical company engaged in the manufacture and distribution of pharmaceutical products. The company produces medicines and related chemical compounds for domestic and international markets. It operates within South Korea's established pharmaceutical manufacturing sector.

Industry: Pharmaceutical Manufacturing & Distribution

Attack summary

Severity: high — The disclosure status is 'data_published', confirming exfiltration and public release of data from a pharmaceutical company operating in the healthcare sector, which likely involves sensitive business, formulation, or employee/patient-adjacent data. The lack of detail on data type prevents a 'critical' rating.

The Gunra ransomware group claims to have attacked KUKJE PHARM CO., LTD and has published data, indicating exfiltration of company data. No ransom amount or specific data volume has been stated.

high

Original description

AI-summarised, not from the leak post

KUKJE PHARM CO., LTD is a South Korean pharmaceutical company engaged in the manufacture and distribution of pharmaceutical products. The company operates within the healthcare and life sciences industry, producing medicines and related chemical compounds for both domestic and international markets. Based in South Korea, it is part of the country's established pharmaceutical manufacturing sector.

Sources

Victim sitekukjepharm.co.kr

Source

Indexed 1 month 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.