Ransomware Intelligence

Yulkok Ltd Ransomware Attack

yulkok.com

beastGroup

South KoreaCountry

Feb 5, 2026Discovered

Overview

View group profile

Domain

yulkok.com

Industry

Manufacturing

Country

South Korea

Discovered

5 months ago

Attack date

Feb 5, 2026

Confidence

100%

Severity

Medium

Status

Claimed

Threat group

Total victims

43

First seen

Jul 2025

Last seen

Apr 2026

Threat level

3.1/10

Aggressiveness5/10

Lethality0/10

Criticality4.7/10

Status breakdown

Claimed

this victim

100.0%43

Targeted sectors

Education Energy & Utilities Financial Services Government & Defense Healthcare Hospitality Manufacturing Other Professional Services Retail & E-Commerce Technology Transportation

Victim's position within group

Industry

Manufacturing

Known target sector

Country

South Korea

Not a listed target country

Other victims

Same group · beast

Group activity

Monthly attacks · beast

43

total · avg 4.8/mo