Sync RTA Linux Telegram API Request (#4107)

rta/linux_command_and_control_telegram_api_request.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="ceab22a5-35d6-47e0-9658-d0405fea72fa",
+    platforms=["linux"],
+    endpoint=[
+        {
+            "rule_name": "Linux Telegram API Request",
+            "rule_id": "87bee79f-cf0b-43a0-884a-a7a4ddbd4599",
+        },
+    ],
+    techniques=["T1071"],
+)
+
+
+@common.requires_os(*metadata.platforms)
+def main() -> None:
+    common.log("Creating a fake executable..")
+    masquerade = "/tmp/curl"
+    source = common.get_path("bin", "netcon_exec_chain.elf")
+    common.copy_file(source, masquerade)
+    common.log("Granting execute permissions...")
+    common.execute(["chmod", "+x", masquerade])
+
+    commands = [masquerade, "exec", "-c", "api.telegram.org"]
+    common.execute([*commands], timeout=5, kill=True)
+    common.log("Cleaning...")
+    common.remove_file(masquerade)
+    common.log("Simulation successfull!")
+
+
+if __name__ == "__main__":
+    sys.exit(main())