It is worth noting that Windows Defender sometimes triggers a "Wacatac" alert on benign RAR files simply because it can't scan deep enough into the compressed layers. Recommended Tools for Investigation
While there isn't a single famous "Watsica.rar" paper, researchers frequently use archives like this to deliver "Wacatac" trojans by exploiting known WinRAR vulnerabilities. Watsica.rar
Forensically Analyzing ZIP & Compressed Files | by Josh Lemon It is worth noting that Windows Defender sometimes