In an unprecedented cyber offensive, APT41, also known as Barium, launched a surgical strike within a mass infection by compromising the ASUS Live Update utility. This operation, dubbed 'Shadow Strike', saw the deployment of malware targeting specific MAC addresses, revealing a calculated and highly selective attack amidst a sea of potential victims. Trainees must navigate through this complex landscape to uncover the true objectives and mitigate the threats posed by this advanced persistent threat group.