What is the exploitation approach targeting Visual Studio using AppDomainManager?

Visual Studio C# projects include a default `App.config` file. By modifying this config to add `appDomainManagerAssembly` and `appDomainManagerType` elements, the corresponding `bin` directory config file will be updated during compilation. If a malicious `DomainManager.dll` is also placed in the `bin` folder, every time the compiled program starts, the payload executes. This allows attackers to backdoor development environments or any .NET projects built with Visual Studio. For more details, see [Use AppDomainManager to maintain persistence](/news/use-appdomainmanager-to-maintain-persistence).