Download the largest collection of malware and ransomware samples, code, and research available on the Internet to download complete files from github.
https://github.com/vxunderground/MalwareSourceCode
You can also upload individual samples of your choice
Through the official website
https://vx-underground.org/samples.html
A curated list of the best malware analysis resources and tools
https://github.com/rshipp/awesome-malware-analysis
A database of many malware and ransomware that you can try and analyze on a fake system only
https://github.com/Endermanch/MalwareDatabase
or
https://github.com/ytisf/theZoo
