Malware
SiennaBlue
aka HolyLocker · H0lyGh0st
Ransomware used by threat actor group DEV-0530, attributed by MSTIC to North Korean origin.
SiennaBlue, also known as HolyLocker, H0lyGh0st, is a Windows malware family.
Background
Ransomware wielded by the threat actor group DEV-0530, which MSTIC traces to North Korea.
Source: Malpedia (Fraunhofer FKIE).