sequence by process.entity_id with maxspan=30s

  /* Look for MSBuild.exe process execution */
  /* The events for this first sequence may be noisy, consider adding exceptions */
  [process where host.os.type == "windows" and event.type == "start" and
    (
      process.pe.original_file_name: "MSBuild.exe" or
      process.name: "MSBuild.exe"
    ) and
    not user.id == "S-1-5-18"]

  /* Followed by a network connection to an external address */
  /* Exclude domains that are known to be benign */
  [network where host.os.type == "windows" and
    event.action: ("connection_attempted", "lookup_requested") and
    (
      process.pe.original_file_name: "MSBuild.exe" or
      process.name: "MSBuild.exe"
    ) and
    not user.id == "S-1-5-18" and
    not cidrmatch(destination.ip, "127.0.0.1", "::1") and
    not dns.question.name : (
      "localhost",
      "dc.services.visualstudio.com",
      "vortex.data.microsoft.com",
      "api.nuget.org")]