did you hear about this file? (e.g., a specific Twitter post, Discord, or class?) Is it a Password Cracking or Malware Analysis challenge?
If this is a specific CTF, searching for "Noel 2021 CTF flag" or "SANS 2021 Noel" in a search engine may yield the precise solution. If you can share: Download Noel20210927 rar
Holiday Hack 2023 (might contain references to earlier challenges). did you hear about this file