--- Name: Csc.exe Description: Binary file used by .NET to compile C# code Author: 'Oddvar Moe' Created: '2018-05-25' Commands: - Command: csc.exe -out:My.exe File.cs Description: Use CSC.EXE to compile C# code stored in File.cs and output the compiled version to My.exe. Usecase: Compile attacker code on system. Bypass defensive counter measures. Category: Compile Privileges: User MitreID: T1127 MitreLink: https://attack.mitre.org/wiki/Technique/T1127 OperatingSystem: Windows vista, Windows 7, Windows 8, Windows 8.1, Windows 10 - Command: csc -target:library File.cs Description: Use CSC.EXE to compile C# code stored in File.cs and output the compiled version to a dll file. Usecase: Compile attacker code on system. Bypass defensive counter measures. Category: Compile Privileges: User MitreID: T1127 MitreLink: https://attack.mitre.org/wiki/Technique/T1127 OperatingSystem: Windows vista, Windows 7, Windows 8, Windows 8.1, Windows 10 Full Path: - Path: C:\Windows\Microsoft.NET\Framework\v4.0.30319\Csc.exe - Path: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Csc.exe Code Sample: - Code: Detection: - IOC: Csc.exe should normally not run a system unless it is used for development. Resources: - Link: https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/compiler-options/command-line-building-with-csc-exe Acknowledgement: - Person: Handle: ---