windows enabled community high v1.0.0

aspnet-compiler

ASP.NET Compilation Tool Located at: c:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe; c:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_compiler.exe.

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aspnet-compiler
aspnet-compiler

Sandbox: execFile · Timeout: 30s

Capabilities

security.defense-evasion.bypass

Contract

Outputs

process.output

Command execution output

Side effects: process_spawn

Workflow Edges

Produces

process.output

Resource Profile

ResourceValue
CPUlow
Memory16 MB
Networklow
Disk I/Olow

Examples

Execute C# code with the Build Provider and proper folder structure in place. (Execute proxied payload with Microsoft signed binary to bypass application control solutions)

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_compiler.exe -v none -p C:\users\cpl.internal\desktop\asptest\ -f C:\users\cpl.internal\desktop\asptest\none -u

Detection

TypeRule / Indicator
blockrule https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-block-rules
sigma https://github.com/SigmaHQ/sigma/blob/62d4fd26b05f4d81973e7c8e80d7c1a0c6a29d0e/rules/windows/process_creation/proc_creation_win_lolbin_aspnet_compiler.yml

Documentation

aspnet-compiler

aspnet-compiler is a Windows LOLBin. ASP.NET Compilation Tool Located at: c:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe; c:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_compiler.exe.

References