---
Name: Msbuild.exe
Description: Used to compile and execute code
Author: 'Oddvar Moe'
Created: 2018-05-25
Commands:
  - Command: msbuild.exe pshell.xml
    Description: Build and execute a C# project stored in the target XML file.
    Usecase: Compile and run code
    Category: AWL bypass
    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: msbuild.exe project.csproj
    Description: Build and execute a C# project stored in the target csproj file.
    Usecase: Compile and run code
    Category: Execute
    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: msbuild.exe @sample.rsp
    Description: Executes Logger statements from rsp file 
    Usecase: Execute DLL
    Category: Execute
    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: msbuild.exe /logger:TargetLogger,C:\Loggers\TargetLogger.dll;MyParameters,Foo
    Description: Executes generated Logger dll file with TargetLogger export
    Usecase: Execute DLL
    Category: Execute
    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: msbuild.exe project.proj
    Description: Execute jscript/vbscript code through XML/XSL Transformation. Requires Visual Studio MSBuild v14.0+.
    Usecase: Execute project file that contains XslTransformation tag parameters
    Category: Execute
    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\v2.0.50727\Msbuild.exe
  - Path: C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Msbuild.exe
  - Path: C:\Windows\Microsoft.NET\Framework\v3.5\Msbuild.exe
  - Path: C:\Windows\Microsoft.NET\Framework64\v3.5\Msbuild.exe
  - Path: C:\Windows\Microsoft.NET\Framework\v4.0.30319\Msbuild.exe
  - Path: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Msbuild.exe
  - Path: C:\Program Files (x86)\MSBuild\14.0\bin\MSBuild.exe
Code_Sample: 
  - Code:
Detection:
 - IOC: Msbuild.exe should not normally be executed on workstations
Resources:
  - Link: https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1127/T1127.md
  - Link: https://github.com/Cn33liz/MSBuildShell
  - Link: https://pentestlab.blog/2017/05/29/applocker-bypass-msbuild/
  - Link: https://oddvar.moe/2017/12/13/applocker-case-study-how-insecure-is-it-really-part-1/
  - Link: https://gist.github.com/bohops/4ffc43a281e87d108875f07614324191
  - Link: https://github.com/LOLBAS-Project/LOLBAS/issues/165
  - Link: https://www.daveaglick.com/posts/msbuild-loggers-and-logging-events
Acknowledgement:
  - Person: Casey Smith
    Handle: '@subtee'
  - Person: Cn33liz
    Handle: '@Cneelis'
  - Person: Jimmy
    Handle: '@bohops'
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