to a secure, isolated folder if you trust the contents .
Threat actors often use the RAR utility to compress and exfiltrate sensitive data stolen from compromised hosts .
A RAR file is a proprietary compressed archive . It cannot harm your system while compressed, but it may contain malware that activates once extracted .
The official utility for creating and extracting RAR archives .
Find the . rar file double-click on the file. click "Unzip to:" and choose the location. Click "Unzip" to begin the process. Guide to opening rar files - Avira