Macro-based malware is making a comeback, researchers warn
For the past several months, different groups of attackers have distributed malware through Microsoft Office documents that contain malicious macros, reviving a technique that has been out of style for over a decade.
Macros are scripts that contain commands for automating tasks in various applications. Microsoft Office programs like Word and Excel support macros written in Visual Basic for Applications (VBA) and these can be used for malicious activities like installing malware.