diff --git a/elements/adversary-groups.json b/elements/adversary-groups.json
index a16107a..5897731 100644
--- a/elements/adversary-groups.json
+++ b/elements/adversary-groups.json
@@ -210,6 +210,15 @@
         "Group 6"
       ]
     },
+    {
+      "group": "darkhotel",
+      "refs": [
+        "https://securelist.com/blog/research/71713/darkhotels-attacks-in-2015/", "https://blogs.technet.microsoft.com/mmpc/2016/06/09/reverse-engineering-dubnium-2"
+      ],
+      "synonyms": [
+        "DUBNIUM"
+      ]
+    },
     {
       "group": "IXESHE",
       "description": "A group of China-based attackers, who conducted a number of spear phishing attacks in 2013.",