RARLAB removed unacev2.dll entirely to fix the issue.
The file is a well-known proof-of-concept (PoC) archive used to demonstrate a critical vulnerability in WinRAR (tracked as CVE-2018-20250 ). 22793.rar
The malware would run automatically the next time the user logged in. 📂 Technical Breakdown RARLAB removed unacev2
Files could be dropped into the Windows Startup folder . 22793.rar