From gbhackers.com
Hackers utilize MSC or Microsoft Management Console files in themed attack campaigns as these files contain commands and scripts that enable them to perform different administrative tasks on the target system.
By mimicking legitimate files, MSC files can evade various security properties and access overview and control of the vulnerable system with privileges, consequently resulting in unauthorized access to its data and other malicious deeds.
Cybersecurity researchers at NTT recently identified that hackers are weaponizing the MSC files in targeted attack campaigns.