res/drawable/ic_stop_24dp.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="24dp"
    android:height="24dp"
    android:viewportHeight="24.0"
    android:viewportWidth="24.0">
    <path
        android:fillColor="@android:color/black"
        android:pathData="M16,8v8H8V8h8m2-2H6v12h12V6z" />
</vector>