Past few year Crypto currency mining is a very easy method for cybercriminals to Generating the huge revenue by hijacking the Web- browser and injecting the malicious script and taking control of the CPU Usage from the Victims.
Attackers targetted the patched vulnerabilities CVE-2017-12635 (Apache CouchDB JSON Remote Privilege Escalation Vulnerability) and CVE-2017-12636 (Apache CouchDB _config Command Execution).