spinstall0.aspx execution traces

Jason Nelson@Jason

•updated Jul 22, 2025•4•2•88

This rule detects the execution of 'csc.exe' (C# compiler) when it attempts to create or interact with a file named 'App_Web_spinstall0.aspx'. This specific file name is often associated with web shell activity or malicious code compilation on web servers, particularly in the context of .NET applications. The rule aims to identify potential malicious compilation and execution of web-based backdoors or implants.