Ransomware victim disclosure

Sungwoo Co., Ltd.

Claimed by beast · listed 3 days ago

$23.83

Ransom

demanded

Age

since listed · data leaked

Status timeline

Listed
May 29, 2026
Data leaked

At a glance

Group: beast
Status: Data leaked
Country: South Korea
Sector: Manufacturing
Listed on leak site: May 29, 2026
Ransom demanded: $23.83

What the group claims

South Korean manufacturer primarily engaged in the production and sale of secondary battery components (rechargeable batteries). Specializes in safety components for lithium-ion batteries such as Top Cap Assemblies, and precision electrical parts for mobile devices and electric vehicles (EVs). Founded in 1992, headquartered in Gumi, listed on the KOSDAQ exchange (Ticker: 458650).

The leak post

captured from the group's site

Overview: Sungwoo Co., Ltd. is a South Korean manufacturer primarily engaged in the production and sale of secondary battery components (rechargeable batteries).
Key Products: The company specializes in safety components for lithium-ion batteries, such as Top Cap Assemblies, which prevent explosions by venting gas and cutting off current during overcharging. They also produce precision electrical parts for mobile devices (like wireless earphones) and electric vehicles (EVs).
Market Position: Founded in 1992 and headquartered in Gumi, the company serves as a key supplier in the EV and consumer electronics supply chain. It was recently listed on the KOSDAQ exchange (Ticker: 458650)
P U B L I S H E D

Screenshot of the leak post

Sources

Leak posthttp://beast6azu4f7fxjakiayhnssybibsgjnmy77a6duufqw5afjzfjhzuqd.onion/card/sungwoo_co___ltd

Source

Indexed 3 days 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 beast

The Beast ransomware group is a relatively new threat actor that emerged in July 2025, operating with apparent financial motivations through their ransomware campaigns. With limited public documentation available from major security agencies, the group has demonstrated activity primarily targeting victims across the United States, United Kingdom, Brazil, South Korea, and Argentina, accumulating approximately 65 known victims since their emergence. Their targeting pattern shows a focus on healthcare organizations, manufacturing companies, educational institutions, and construction firms, suggesting an opportunistic approach rather than highly specialized sector expertise. The group's recent emergence means there is insufficient public intelligence from CISA, FBI, Mandiant, or other established security researchers regarding their specific attack methodologies, initial access vectors, or technical capabilities. Given the timeline of their first observation in mid-2025, Beast represents an active and emerging threat with their current operational status remaining unclear due to limited threat intelligence reporting from authoritative sources. The group has been linked to 93 public disclosures across our corpus. First observed on a leak site on July 29, 2025; most recent post May 31, 2026. The operation is currently active.

Timeline of this disclosure

May 29, 2026Sungwoo Co., Ltd. listed by beaston the group's public leak site

Ransom demanded: $23.83

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, Sungwoo Co., Ltd. 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.