chg: [stix1 import] Improved regkey object parsing
chg: [stix1 import] Improved regkey object parsing

FIRSTdotorg/MISP,Rafiot/MISP,FloatingGhost/MISP,devnull-/MISP,MISP/MISP,Rafiot/MISP,SteveClement/MISP,Rafiot/MISP,SteveClement/MISP,FloatingGhost/MISP,devnull-/MISP,MISP/MISP,FloatingGhost/MISP,FIRSTdotorg/MISP,MISP/MISP,FloatingGhost/MISP,FIRSTdotorg/MISP,Rafiot/MISP,devnull-/MISP,SteveClement/MISP,SteveClement/MISP,FIRSTdotorg/MISP,MISP/MISP,MISP/MISP,SteveClement/MISP,devnull-/MISP