According to a recent automated malware analysis report from ANY.RUN , a file named CNI.rar was observed interacting with system processes like WinRAR.exe to perform write operations in a controlled environment.
There is currently no widely documented "write-up" for a file named in the context of CTF challenges or standard digital forensics databases. However, recent sandbox reports identify it as a potentially malicious archive. Security Context CNI.rar
Providing the source of the file could help narrow down the specific "write-up" you need. According to a recent automated malware analysis report
Use tools like binwalk or strings to look for hidden files, suspicious URLs, or hardcoded credentials within the archive. Security Context Providing the source of the file
If you are dealing with this file as part of a security investigation or CTF, here is the standard procedure for a write-up:
Check the SHA-256 hash on platforms like VirusTotal to see if it matches known infostealers or trojans.
If the archive contains an executable (e.g., .exe or .vbs ), run it in a isolated sandbox to monitor network traffic and registry changes.