Upload the .rar or the extracted .jar to VirusTotal to check for malicious signatures.
Often located in the root .minecraft folder, containing:
If you are putting together a for the client, many users look for "Disabler" settings to bypass anti-cheat detections. Based on community repositories on GitHub , users often look for toggles related to specific servers like Vulcan or Verus.
Text files storing your user settings. Safety Warning
Optional JavaScript or Lua scripts to add custom modules.