Macro-Blocking & How Threat Actors Are Adapting explains the shift from Office files to archives like RAR.
It looks like you're diving into some cybersecurity research! Finding a file named Office Macro Downloader.rar is a major red flag, as this is a classic technique used by hackers to deliver malware. Office Macro Downloader.rar
Macro-Blocking & How Threat Actors Are Adapting - Proofpoint Macro-Blocking & How Threat Actors Are Adapting explains