북한발 위협 행위자 관련 LNK 기반 악성파일 분석 : LNK를 이용한 Konni과 Kimsuky 공격 매커니즘 분석
2025-05-19 • Igloo • Analysis of LNK-Based Malicious Files Related to North Korea-Origin Threat Actors: Konni and Kimsuky Attack Mechanisms Using LNK •
https://www.igloopedia.com/1edf216a-760c-8003-bb0a-c065e469a3c2
IGLOO analyzes four LNK-based malware samples believed to be distributed by North Korea-linked Konni and Kimsuky activity. The samples are grouped into three types based on C2, code structure, and obfuscation: modular batch-file use, copied legitimate processes, and batch files disguised as .db files. Konni-associated samples use compromised domains and more complex logic, including time-derived encryption for parts of communication URLs and host-based targeting using %COMPUTERNAME%. Kimsuky-associated samples are linked to PebbleDash and RAT-style follow-on activity for remote control and additional malicious actions.