Use tools like binwalk or strings to look for hidden files, suspicious URLs, or hardcoded credentials within the archive.
If you are dealing with this file as part of a security investigation or CTF, here is the standard procedure for a write-up: CNI.rar
If the archive contains an executable (e.g., .exe or .vbs ), run it in a isolated sandbox to monitor network traffic and registry changes. Use tools like binwalk or strings to look