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

September 3, 2025Samwha Capacitor Group listed by gunraon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 2,458 disclosures indexed across all operators we track. Geographically, Samwha Capacitor Group 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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Samwha Capacitor Group

Claimed by gunra · listed 9 months ago

Age

since listed · data leaked

Status timeline

Listed
Sep 3, 2025
Data leaked

At a glance

Group: gunra
Status: Data leaked
Country: South Korea
Sector: Manufacturing
Listed on leak site: Sep 3, 2025

About the victim

AI dossier — public-source company profile

Samwha Capacitor Group is a South Korean manufacturer of electronic capacitors and related components, founded in 1973. The company serves industries including consumer electronics, automotive, and information technology, and operates subsidiaries across multiple countries. Their stated mission emphasises continuous innovation and sustainable growth.

Industry: Electronic Components Manufacturing (Capacitors)
Founded: 1973

Attack summary

Severity: medium — Data has been published by the threat actor, indicating confirmed exfiltration, but no detail on data type, volume, or sensitivity (e.g. PII, financial, regulated data) is available from the post, preventing a higher severity classification.

The Gunra ransomware group claims to have attacked Samwha Capacitor Group and has published data (disclosed status: data_published), suggesting exfiltration of company data; no specific ransom amount or data volume has been stated.

medium

Original description

AI-summarised, not from the leak post

Samwha Capacitor Group, founded in 1973 in South Korea, is a global company manufacturing electronic components. Their product line includes a variety of capacitors—devices that store electrical energy. These are used in numerous industries, such as electronics, automotive, and information technology. Samwha Capacitor Group has subsidiaries in several countries and strives for technological innovation and sustainable growth.

Sources

Victim sitesamwha.co.kr
Leak posthttp://gunrabxbig445sjqa535uaymzerj6fp4nwc6ngc2xughf2pedjdhk4ad.onion/samwha

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.