Operation FlashHole is a sophisticated cyberattack campaign launched by the Lazarus Group targeting South Korea. It exploits mandatory security software CrossWeb EX using watering hole attacks and spear-phishing with fake portfolio and resume websites. The campaign, active since July prior to January, targets sectors including software, construction, and cable equipment manufacturing. It employs a modular malware framework combining multiple malware families such as TechHub, Cubridge, TouchShift, TouchHub, ClientHub, and LPEClient. Techniques used include in-memory execution, DLL side-loading, and command-and-control infrastructure leveraging GitHub and Dropbox. The attackers also incorporate advanced cryptographic methods like post-quantum cryptography (ML-KEM-1024) and GOST encryption. This campaign demonstrates Lazarus Group's evolving tactics specifically tailored for South Korean targets.
A Lazarus group cyberespionage campaign targeted a Spanish aerospace company by impersonating Meta recruiters on LinkedIn and sending trojanized coding challenges. The attack used spearphishing via LinkedIn Messaging to deliver malicious executables disguised as C++ programming tests. The campaign deployed multiple malware tools including LightlessCan, a new backdoor with enhanced stealth and command capabilities, NickelLoader downloader, and miniBlindingCan variant. DLL side-loading was used to load payloads, and the attack aimed to steal aerospace technology and know-how, aligning with North Korean strategic interests.