How would ISO 27001 help secure system from ransomware attack?

The systematic approach for information security provided by ISO 27001 can help an organization justify, by means of risk assessment and legal requirements (e.g., laws, regulations, and contracts), why implementing security measures against ransomware attacks is important, and, by means of controls listed in its Annex A, which controls can be used (e.g., A.8.13 Information backup, A.8.8 Management of technical vulnerabilities, and A.8.7 Protection against malware).

This article will provide you with further explanation about treatment against malware:

• How can ISO 27001 help protect your company against ransomware? https://advisera.com/27001academy/blog/2016/11/14/how-can-iso-27001-help-protect-your-company-against-ransomware/