It attempts to reach out to a Command & Control (C2) server via HTTP/HTTPS to check in or download further instructions.
This write-up covers the analysis of , a suspicious archive containing a .NET-based executable . The analysis focuses on its behavior, underlying code, and indicators of compromise (IoCs). File Overview Archive Name: WinFormsApp23.11.zip Contained File: WinFormsApp23.11.exe Platform: Windows (.NET Framework / .NET Core) Type: Windows Forms Application 1. Initial Static Analysis WinFormsApp23.11.zip
The Main method typically initializes the GUI, but in malicious samples, it may include a Resource loader or a Process.Start command. It attempts to reach out to a Command
High (suggesting possible packing or encrypted payloads). File Overview Archive Name: WinFormsApp23
Running the sample in a sandbox (e.g., ANY.RUN or Flare-VM) reveals the following actions:
If the code contains randomized variable names (e.g., a() , b() ), it has likely been processed with ConfuserEx or Dotfuscator .