Some improvements of virustotal plugin
Some improvements of virustotal plugin

MISP/misp-modules,amuehlem/misp-modules,amuehlem/misp-modules,VirusTotal/misp-modules,MISP/misp-modules,Rafiot/misp-modules,MISP/misp-modules,VirusTotal/misp-modules,Rafiot/misp-modules,Rafiot/misp-modules,VirusTotal/misp-modules,amuehlem/misp-modules