diff --git a/atomics/T1120/T1120.yaml b/atomics/T1120/T1120.yaml
index e2493565..13abdf15 100644
--- a/atomics/T1120/T1120.yaml
+++ b/atomics/T1120/T1120.yaml
@@ -2,6 +2,7 @@ attack_technique: T1120
 display_name: Peripheral Device Discovery
 atomic_tests:
 - name: Win32_PnPEntity Hardware Inventory
+  auto_generated_guid: 2cb4dbf2-2dca-4597-8678-4d39d207a3a5
   description: Perform peripheral device discovery using Get-WMIObject Win32_PnPEntity
   supported_platforms:
   - windows
diff --git a/atomics/used_guids.txt b/atomics/used_guids.txt
index fdd04b7f..34a68e85 100644
--- a/atomics/used_guids.txt
+++ b/atomics/used_guids.txt
@@ -658,3 +658,4 @@ ab042179-c0c5-402f-9bc8-42741f5ce359
 7cede33f-0acd-44ef-9774-15511300b24b
 5102a3a7-e2d7-4129-9e45-f483f2e0eea8
 9d71c492-ea2e-4c08-af16-c6994cdf029f
+2cb4dbf2-2dca-4597-8678-4d39d207a3a5