Merge pull request #150 from elliotkillick/OfflineScannerShell

Create OfflineScannerShell.yml

yml/OSBinaries/OfflineScannerShell.yml

@@ -0,0 +1,22 @@
+---
+Name: OfflineScannerShell.exe
+Description: Windows Defender Offline Shell
+Author: 'Elliot Killick'
+Created: '2021-08-16'
+Commands:
+  - Command: OfflineScannerShell
+    Description: Execute mpclient.dll library in the current working directory
+    Usecase: Can be used to evade defensive countermeasures or to hide as a persistence mechanism
+    Category: Execute
+    Privileges: Administrator
+    MitreID: T1218
+    MitreLink: https://attack.mitre.org/wiki/Technique/T1218/
+    OperatingSystem: Windows 10
+Full_Path:
+  - Path: C:\Program Files\Windows Defender\Offline\OfflineScannerShell.exe
+Detection:
+  - IOC: OfflineScannerShell.exe should not be run on a normal workstation
+Acknowledgement:
+  - Person: Elliot Killick
+    Handle: '@elliotkillick'
+---