fix: [stix1 import] Fixed malware instance parsing
fix: [stix1 import] Fixed malware instance parsing

MISP/MISP,SteveClement/MISP,SteveClement/MISP,SteveClement/MISP,MISP/MISP,SteveClement/MISP,MISP/MISP,SteveClement/MISP,MISP/MISP,MISP/MISP