Thread C # Antivirus warning

Good morning everyone, I am starting to implement threads in a program created in VisualStudio (windows form) and whenever I start my program the antivirus is activated putting my program in the quarantine. I'm going to post leave my code here to show how I did my implementation.

public partial class Form1 : Form{ 

      public Thread th;

      private void Form1_Load(object sender, EventArgs e)
      {
         th = new Thread(new ThreadStart(this.TimerPings));
         th.Start();
      }

      private void TimerPings()
      {
        timer = new System.Threading.Timer(new TimerCallback(VerificaStatusEquipamentos), null, 1000, 10000);
      }
      public void VerificaStatusEquipamentos(object state)
      {
       //este método ficou um pouco extenso, mas o que ele faz é 
       //uma rotina foreach em uma lista e altera o .Text de alguns
       //labels do meu Form principal
      }             
}

}

Does anyone know what could cause this antivirus activation? Is this implementation of thread usage correct or would I have to implement it in another way? I used this post as an example ( insert the link description here ) and another tutorial to implement Timer . Thanks in advance to anyone who can help, give some tips.