There is a documented ransomware known as Black Ruby . This malware encrypts user files and has been distributed through malicious email attachments or downloads disguised as legitimate software. Safety Recommendations
If you have already downloaded the file, do not unzip it. Run it through a multi-engine scanner like VirusTotal to check for malicious signatures. Download Dark Ruby FFP zip
How to flash RubyFPV to Runcam WiFilink v2 (and initial setup) There is a documented ransomware known as Black Ruby
Depending on your interest, this file name could be a mangled version of several legitimate tools: Download Dark Ruby FFP zip