Added event for the default rule create hidden file or directory

events/syscall/create_hidden_file_or_directory.go

@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+Copyright (C) 2024 The Falco Authors.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package syscall
+
+import (
+	"os"
+
+	"github.com/falcosecurity/event-generator/events"
+)
+
+var _ = events.Register(
+	CreateHiddenFileOrDirectory,
+	events.WithDisabled(), // this rule is not included in falco_rules.yaml (stable rules), so disable the action
+)
+
+func CreateHiddenFileOrDirectory(h events.Helper) error {
+	// Create a hidden directory
+	const directoryname = "/.created-by-event-generator"
+	h.Log().Infof("Created a hidden directory %s", directoryname)
+	defer os.Remove(directoryname) // Remove after function return
+	return os.Mkdir(directoryname, 0755)
+}