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https://github.com/LOLBAS-Project/LOLBAS
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ebbf08ec4d
* Adding various tags as a first iteration * Adding quotes * Adding 'Custom Format' properly * Updating to key:value pairs * Update template
86 lines
5.2 KiB
YAML
86 lines
5.2 KiB
YAML
---
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Name: Msbuild.exe
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Description: Used to compile and execute code
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Author: 'Oddvar Moe'
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Created: 2018-05-25
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Commands:
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- Command: msbuild.exe pshell.xml
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Description: Build and execute a C# project stored in the target XML file.
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Usecase: Compile and run code
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Category: AWL Bypass
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Privileges: User
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MitreID: T1127.001
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OperatingSystem: Windows vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11
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- Command: msbuild.exe project.csproj
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Description: Build and execute a C# project stored in the target csproj file.
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Usecase: Compile and run code
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Category: Execute
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Privileges: User
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MitreID: T1127.001
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OperatingSystem: Windows vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11
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- Command: msbuild.exe /logger:TargetLogger,C:\Loggers\TargetLogger.dll;MyParameters,Foo
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Description: Executes generated Logger DLL file with TargetLogger export
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Usecase: Execute DLL
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Category: Execute
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Privileges: User
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MitreID: T1127.001
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OperatingSystem: Windows vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11
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Tags:
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- Execute: DLL
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- Command: msbuild.exe project.proj
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Description: Execute jscript/vbscript code through XML/XSL Transformation. Requires Visual Studio MSBuild v14.0+.
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Usecase: Execute project file that contains XslTransformation tag parameters
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Category: Execute
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Privileges: User
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MitreID: T1127.001
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OperatingSystem: Windows vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11
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Tags:
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- Execute: WSH
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- Command: msbuild.exe @sample.rsp
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Description: By putting any valid msbuild.exe command-line options in an RSP file and calling it as above will interpret the options as if they were passed on the command line.
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Usecase: Bypass command-line based detections
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Category: Execute
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Privileges: User
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MitreID: T1036
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OperatingSystem: Windows vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11
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Full_Path:
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- Path: C:\Windows\Microsoft.NET\Framework\v2.0.50727\Msbuild.exe
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- Path: C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Msbuild.exe
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- Path: C:\Windows\Microsoft.NET\Framework\v3.5\Msbuild.exe
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- Path: C:\Windows\Microsoft.NET\Framework64\v3.5\Msbuild.exe
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- Path: C:\Windows\Microsoft.NET\Framework\v4.0.30319\Msbuild.exe
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- Path: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Msbuild.exe
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- Path: C:\Program Files (x86)\MSBuild\14.0\bin\MSBuild.exe
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Code_Sample:
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- Code:
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Detection:
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- Sigma: https://github.com/SigmaHQ/sigma/blob/6312dd1d44d309608552105c334948f793e89f48/rules/windows/file/file_event/file_event_win_shell_write_susp_directory.yml
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- Sigma: https://github.com/SigmaHQ/sigma/blob/6312dd1d44d309608552105c334948f793e89f48/rules/windows/process_creation/proc_creation_win_msbuild_susp_parent_process.yml
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- Sigma: https://github.com/SigmaHQ/sigma/blob/c04bef2fbbe8beff6c7620d5d7ea6872dbe7acba/rules/windows/network_connection/net_connection_win_silenttrinity_stager_msbuild_activity.yml
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- Splunk: https://github.com/splunk/security_content/blob/18f63553a9dc1a34122fa123deae2b2f9b9ea391/detections/endpoint/suspicious_msbuild_spawn.yml
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- Splunk: https://github.com/splunk/security_content/blob/18f63553a9dc1a34122fa123deae2b2f9b9ea391/detections/endpoint/suspicious_msbuild_rename.yml
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- Splunk: https://github.com/splunk/security_content/blob/a1afa0fa605639cbef7d528dec46ce7c8112194a/detections/endpoint/msbuild_suspicious_spawned_by_script_process.yml
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- Elastic: https://github.com/elastic/detection-rules/blob/61afb1c1c0c3f50637b1bb194f3e6fb09f476e50/rules/windows/defense_evasion_msbuild_beacon_sequence.toml
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- Elastic: https://github.com/elastic/detection-rules/blob/61afb1c1c0c3f50637b1bb194f3e6fb09f476e50/rules/windows/defense_evasion_msbuild_making_network_connections.toml
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- Elastic: https://github.com/elastic/detection-rules/blob/ef7548f04c4341e0d1a172810330d59453f46a21/rules/windows/defense_evasion_execution_msbuild_started_by_script.toml
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- Elastic: https://github.com/elastic/detection-rules/blob/61afb1c1c0c3f50637b1bb194f3e6fb09f476e50/rules/windows/defense_evasion_execution_msbuild_started_by_office_app.toml
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- Elastic: https://github.com/elastic/detection-rules/blob/61afb1c1c0c3f50637b1bb194f3e6fb09f476e50/rules/windows/defense_evasion_execution_msbuild_started_renamed.toml
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- BlockRule: https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-block-rules
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- IOC: Msbuild.exe should not normally be executed on workstations
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Resources:
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- Link: https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1127/T1127.md
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- Link: https://github.com/Cn33liz/MSBuildShell
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- Link: https://pentestlab.blog/2017/05/29/applocker-bypass-msbuild/
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- Link: https://oddvar.moe/2017/12/13/applocker-case-study-how-insecure-is-it-really-part-1/
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- Link: https://gist.github.com/bohops/4ffc43a281e87d108875f07614324191
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- Link: https://github.com/LOLBAS-Project/LOLBAS/issues/165
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- Link: https://docs.microsoft.com/en-us/visualstudio/msbuild/msbuild-response-files
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- Link: https://www.daveaglick.com/posts/msbuild-loggers-and-logging-events
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Acknowledgement:
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- Person: Casey Smith
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Handle: '@subtee'
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- Person: Cn33liz
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Handle: '@Cneelis'
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- Person: Jimmy
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Handle: '@bohops'
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