diff --git a/clusters/threat-actor.json b/clusters/threat-actor.json
index 09c327c..c1872bb 100644
--- a/clusters/threat-actor.json
+++ b/clusters/threat-actor.json
@@ -9253,13 +9253,16 @@
           "https://github.com/fireeye/sunburst_countermeasures",
           "https://www.microsoft.com/security/blog/2021/03/04/goldmax-goldfinder-sibot-analyzing-nobelium-malware",
           "https://www.fireeye.com/blog/threat-research/2021/03/sunshuttle-second-stage-backdoor-targeting-us-based-entity.html",
-          "https://unit42.paloaltonetworks.com/atoms/solarphoenix/"
+          "https://unit42.paloaltonetworks.com/atoms/solarphoenix/",
+          "https://www.microsoft.com/en-us/security/blog/2024/01/25/midnight-blizzard-guidance-for-responders-on-nation-state-attack/",
+          "https://www.microsoft.com/en-us/security/blog/2023/08/02/midnight-blizzard-conducts-targeted-social-engineering-over-microsoft-teams/"
         ],
         "synonyms": [
           "DarkHalo",
           "StellarParticle",
           "NOBELIUM",
-          "Solar Phoenix"
+          "Solar Phoenix",
+          "Midnight Blizzard"
         ]
       },
       "related": [
@@ -14035,7 +14038,14 @@
       "meta": {
         "country": "CN",
         "refs": [
-          "https://www.volexity.com/blog/2024/01/10/active-exploitation-of-two-zero-day-vulnerabilities-in-ivanti-connect-secure-vpn/"
+          "https://www.volexity.com/blog/2024/01/10/active-exploitation-of-two-zero-day-vulnerabilities-in-ivanti-connect-secure-vpn/",
+          "https://www.rewterz.com/rewterz-news/rewterz-threat-advisory-ivanti-vpn-zero-days-weaponized-by-unc5221-threat-actors-to-deploy-multiple-malware-families-active-iocs/",
+          "https://www.mandiant.com/resources/blog/suspected-apt-targets-ivanti-zero-day",
+          "https://quointelligence.eu/2024/01/unc5221-unreported-and-undetected-wirefire-web-shell-variant/",
+          "https://www.volexity.com/blog/2024/01/18/ivanti-connect-secure-vpn-exploitation-new-observations/"
+        ],
+        "synonyms": [
+          "UNC5221"
         ]
       },
       "uuid": "f288f686-b5b3-4c86-9960-5f8fb18709a3",
@@ -14113,6 +14123,18 @@
       },
       "uuid": "bbb389f2-344f-4ca8-a9c9-902061f88deb",
       "value": "Cotton Sandstorm"
+    },
+    {
+      "description": "Blackwood is a China-aligned APT group that has been active since at least 2018. They primarily engage in cyberespionage operations targeting individuals and companies in China, Japan, and the United Kingdom. Blackwood utilizes sophisticated techniques such as adversary-in-the-middle attacks to deliver their custom implant, NSPX30, through updates of legitimate software. They also have the capability to hide the location of their command and control servers by intercepting traffic generated by the implant.",
+      "meta": {
+        "country": "CN",
+        "refs": [
+          "https://www.welivesecurity.com/en/eset-research/nspx30-sophisticated-aitm-enabled-implant-evolving-since-2005/",
+          "https://blog.sonicwall.com/en-us/2024/01/blackwood-apt-group-has-a-new-dll-loader/"
+        ]
+      },
+      "uuid": "46e26e5c-ad74-45aa-a654-1afef67f4566",
+      "value": "Blackwood"
     }
   ],
   "version": 297