B7.7z -
If you have a file named B7.7z and want to perform your own write-up, follow these forensic steps: Use the file command in Linux or a Hex Editor.
Search the hash on Hybrid Analysis or Any.Run to see if other researchers have analyzed it. To give you a better write-up, could you tell me: If you have a file named B7
(e.g., a specific CTF, a GitHub repo, or a system folder)? could you tell me: (e.g.