Since does not appear to be a known public file from a major competition (like a CTF) or a documented malware sample, a "write-up" for it would typically follow a standard technical analysis template.
Document where the file was obtained (e.g., an email attachment, a specific server, or a forensic image). 2. Archive Inspection DA76N8MK0L1.rar
Use tools like 7-Zip or WinRAR to view the file list. Since does not appear to be a known
Determine what is inside without executing any potentially malicious content. an email attachment
I can give you a much more specific analysis if you have details on its source or intended purpose. Edit .RAR file comments from python - Stack Overflow