Update machinetag.json

cryptocurrency-threat/machinetag.json

@@ -42,6 +42,10 @@
     {
       "value": "Crypto Robbing Ransomware",
       "expanded": "Cyber-extortionists began distributing new malware that empties cryptocurrency wallets and steals private keys while holding user data hostage."
+    },
+    {
+      "value": "Rag Pull",
+      "expanded": "Crypto scam that occurs when a team pumps their project’s token before disappearing with the funds, leaving their investors with a valueless asset." 
     }  
       ],
   "refs": [