Add SCP.exe for execute operation (#509)

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

yml/OSBinaries/Scp.yml

@@ -0,0 +1,24 @@
+---
+Name: scp.exe
+Description: Used for uploading or downloading files over SSH.
+Author: BinFault
+Created: 2026-06-03
+Commands:
+  - Command: scp.exe -o ProxyCommand="{CMD}" . localhost:.
+    Description: Spawns specified command from `svchost.exe` -> `sihost.exe`, even if no SSH server is running from localhost (or any other address specified).
+    Usecase: Proxy execution of specified command, can be used as a defensive evasion.
+    Category: Execute
+    Privileges: User
+    MitreID: T1202
+    OperatingSystem: Windows 10, Windows 11
+    Tags:
+      - Execute: CMD
+Full_Path:
+  - Path: C:\Windows\System32\OpenSSH\scp.exe
+Detection:
+  - IOC: "`scp.exe` executions referencing `ProxyCommand`."
+Resources:
+  - Link: https://gtfobins.org/gtfobins/scp/
+Acknowledgement:
+  - Person: BinFault
+    Handle: '@binfault'