From 9ac381f37a21a67bb2468ada3e9acac915224adc Mon Sep 17 00:00:00 2001
From: protections machine
 <72879786+protectionsmachine@users.noreply.github.com>
Date: Thu, 24 Oct 2024 00:31:17 +1100
Subject: [PATCH] Sync RTA File Downloaded via Curl or Wget to Hidden Directory
 (#4197)

Co-authored-by: shashank-elastic <91139415+shashank-elastic@users.noreply.github.com>

(cherry picked from commit a54f83981eccc2604d25504c61e284d738818e88)
---
 ...ntrol_curl_wget_hidden_directory_output.py | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 rta/linux_command_and_control_curl_wget_hidden_directory_output.py

diff --git a/rta/linux_command_and_control_curl_wget_hidden_directory_output.py b/rta/linux_command_and_control_curl_wget_hidden_directory_output.py
new file mode 100644
index 00000000000..628a43be6fd
--- /dev/null
+++ b/rta/linux_command_and_control_curl_wget_hidden_directory_output.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="b3c8c616-15a5-45fd-970a-c44c18e59578",
+    platforms=["linux"],
+    endpoint=[
+        {
+            "rule_name": "File Downloaded via Curl or Wget to Hidden Directory",
+            "rule_id": "dc1cee03-4923-4c6b-b00b-8a5c323bb753",
+        },
+    ],
+    techniques=["T1564"],
+)
+
+
+@common.requires_os(*metadata.platforms)
+def main() -> None:
+    common.log("Creating a fake executable..")
+    masquerade = "/tmp/curl"
+
+    source = common.get_path("bin", "linux.ditto_and_spawn")
+    common.copy_file(source, masquerade)
+    common.log("Granting execute permissions...")
+    common.execute(["chmod", "+x", masquerade])
+
+    commands = [masquerade, "--output", "/dev/shm/evil"]
+    common.execute([*commands], timeout=5, kill=True)
+    common.log("Cleaning...")
+    common.remove_file(masquerade)
+    common.log("Simulation successfull!")
+
+
+if __name__ == "__main__":
+    sys.exit(main())