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Yulkok Ltd Ransomware Attack

yulkok.comRansomed

beastGroup

South KoreaCountry

Feb 5, 2026Discovered

Overview

View group profile

Domain

yulkok.com

Industry

Manufacturing

Country

South Korea

Discovered

8 months ago

Attack date

Feb 5, 2026

Confidence

100%

Severity

Medium

Status

Claimed

Threat group

Total victims

30

First seen

Oct 2025

Last seen

Aug 2026

Threat level

3.1/10

Aggressiveness5/10

Lethality0/10

Criticality4.4/10

Status breakdown

Claimed

this victim

100.0%30

Targeted sectors

Education Energy & Utilities Government & Defense Healthcare Manufacturing Other Professional Services 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

30

total · avg 4.3/mo