From c0c369181abbcff7cb3a5d16d789e780f85263e8 Mon Sep 17 00:00:00 2001
From: Samirbous <64742097+Samirbous@users.noreply.github.com>
Date: Tue, 8 Dec 2020 17:32:08 +0100
Subject: [PATCH] [New Rule] New Port Forwarding Rule Added (#630)

* [New Rule] New Port Forwarding Rule Added

* fiexed rule file name

* eql syntax

* ecs_version

* Update rules/windows/defense_evasion_port_forwarding_added_registry.toml

Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com>

* Update rules/windows/defense_evasion_port_forwarding_added_registry.toml

Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com>

* Update rules/windows/defense_evasion_port_forwarding_added_registry.toml

Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com>

Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com>
---
 ...vasion_port_forwarding_added_registry.toml | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 rules/windows/defense_evasion_port_forwarding_added_registry.toml

diff --git a/rules/windows/defense_evasion_port_forwarding_added_registry.toml b/rules/windows/defense_evasion_port_forwarding_added_registry.toml
new file mode 100644
index 000000000..04bbd7e82
--- /dev/null
+++ b/rules/windows/defense_evasion_port_forwarding_added_registry.toml
@@ -0,0 +1,42 @@
+[metadata]
+creation_date = "2020/11/25"
+maturity = "production"
+updated_date = "2020/11/25"
+
+[rule]
+author = ["Elastic"]
+description = """
+Identifies the creation of a new port forwarding rule. An adversary may abuse this technique to bypass network
+segmentation restrictions.
+"""
+from = "now-9m"
+index = ["winlogbeat-*", "logs-endpoint.events.*"]
+language = "eql"
+license = "Elastic License"
+name = "Port Forwarding Rule Addition"
+references = [
+    "https://www.fireeye.com/blog/threat-research/2019/01/bypassing-network-restrictions-through-rdp-tunneling.html",
+]
+risk_score = 47
+rule_id = "3535c8bb-3bd5-40f4-ae32-b7cd589d5372"
+severity = "medium"
+tags = ["Elastic", "Host", "Windows", "Threat Detection", "Defense Evasion"]
+type = "eql"
+
+query = '''
+registry where registry.path : "HKLM\\SYSTEM\\ControlSet*\\Services\\PortProxy\\v4tov4\\*"
+'''
+
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1089"
+name = "Disabling Security Tools"
+reference = "https://attack.mitre.org/techniques/T1089/"
+
+
+[rule.threat.tactic]
+id = "TA0005"
+name = "Defense Evasion"
+reference = "https://attack.mitre.org/tactics/TA0005/"