This is a compressed file format. To see what’s inside, you need a program like WinRAR or 7-Zip .
If you want me to make this post more specific, could you tell me: MB-Small (3).rar
(This can help identify if it's a simple text config or a compiled binary.) Free Automated Malware Analysis Service - Hybrid Analysis * Credential Access. * Persistence. * Privilege Escalation. Hybrid Analysis Contributions | The Neverwinter Vault This is a compressed file format