1. WnnaCry
https://securelist.com/blog/research/78411/wannacry-faq-what-you-need-to-know-today/
SMB Server Message Block https://en.wikipedia.org/wiki/Server_Message_Block
- Common Internet File System
operates as an application-layer network protocol[3]
- mainly used for providing shared access to files, printers, and serial ports
and miscellaneous communications between nodes on a network
Most usage of SMB involves computers running Microsoft Windows, where it was known as "Microsoft Windows Network" before the subsequent introduction of Active Directory.
SMB Security Best Practices https://www.us-cert.gov/ncas/current-activity/2017/01/16/SMB-Security-Best-Practices
1.1. Microsoft
Customer Guidance for WannaCrypt attacks
Microsoft solution available to protect additional products
https://docs.microsoft.com/en-us/msrc/customer-guidance-for-wannacrypt-attacks
1.2. piyolog
http://d.hatena.ne.jp/Kango/20170513/1494700355
1.3. Uiwix
https://www.cnet.com/news/wannacry-wannacrypt-uiwix-ransomware-everything-you-need-to-know/
1.4. MBSD
「WannaCry 2.0」の内部構造を紐解く http://www.mbsd.jp/blog/20170518.html
1.5. sophos
How to stay proteced against ransomeware https://www.sophos.com/en-us/medialibrary/Gated%20Assets/white%20papers/sophosransomwareprotectionwpna.pdf?la=en