react_sync_rta_updates_3575 (#3762)

(cherry picked from commit 57095a28b9)

rta/linux_exec_interactive_shell.py

@@ -0,0 +1,40 @@
+# Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+# or more contributor license agreements. Licensed under the Elastic License
+# 2.0; you may not use this file except in compliance with the Elastic License
+# 2.0.
+
+import sys
+
+from . import RtaMetadata, common
+
+metadata = RtaMetadata(
+    uuid="94366604-8f84-448e-9761-0eb7b45bc2fa",
+    platforms=["linux"],
+    endpoint=[
+        {
+            "rule_name": "Linux Suspicious Child Process Execution via Interactive Shell",
+            "rule_id": "aa02591f-c9e6-4317-841e-0b075b9515ff",
+        },
+    ],
+    techniques=["T1059"],
+)
+
+
+@common.requires_os(*metadata.platforms)
+def main() -> None:
+    masquerade = "/tmp/bash"
+    source = common.get_path("bin", "linux.ditto_and_spawn")
+    common.copy_file(source, masquerade)
+
+    commands = [masquerade, "-i"]
+
+    # Execute command
+    common.log("Launching fake command to simulate an interactive shell process")
+    common.execute([*commands], timeout=5, kill=True)
+
+    # cleanup
+    common.remove_file(masquerade)
+
+
+if __name__ == "__main__":
+    sys.exit(main())