https://stix.hosting.csta.cisco.com/
The STIX Converter website is an online tool to convert from a Structured Threat Intelligence Expressions (STIX) format to Cisco Threat Intelligence Model (CTIM). This translation component is crucial in the rapid investigation of incidents, or when threat hunting. Structured Threat Information Expression (STIX) is a language and serialization format used to exchange cyber threat intelligence (CTI).