From 30cded7a2db07bd0fb945c9d6aa68a7167c19f24 Mon Sep 17 00:00:00 2001
From: Samirbous <64742097+Samirbous@users.noreply.github.com>
Date: Wed, 2 Dec 2020 21:22:43 +0100
Subject: [PATCH] [New Rule] Lateral Movement via Startup Folder (#663)

* [New Rule] Lateral Movement via Startup Folder

* Update rules/windows/lateral_movement_via_startup_folder_rdp_smb.toml

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

* Update rules/windows/lateral_movement_via_startup_folder_rdp_smb.toml

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

* Update rules/windows/lateral_movement_via_startup_folder_rdp_smb.toml

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

* ecs_version

Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com>
---
 ...l_movement_via_startup_folder_rdp_smb.toml | 55 +++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 rules/windows/lateral_movement_via_startup_folder_rdp_smb.toml

diff --git a/rules/windows/lateral_movement_via_startup_folder_rdp_smb.toml b/rules/windows/lateral_movement_via_startup_folder_rdp_smb.toml
new file mode 100644
index 000000000..f1bd430fb
--- /dev/null
+++ b/rules/windows/lateral_movement_via_startup_folder_rdp_smb.toml
@@ -0,0 +1,55 @@
+[metadata]
+creation_date = "2020/10/19"
+maturity = "production"
+updated_date = "2020/10/19"
+
+[rule]
+author = ["Elastic"]
+description = """
+Identifies suspicious file creations in the startup folder of a remote system. An adversary could abuse this
+to move laterally by dropping a malicious script or executable that will be executed after a reboot or user logon.
+"""
+from = "now-9m"
+index = ["logs-endpoint.events.*", "winlogbeat-*"]
+language = "eql"
+license = "Elastic License"
+name = "Lateral Movement via Startup Folder"
+references = ["https://www.mdsec.co.uk/2017/06/rdpinception/"]
+risk_score = 73
+rule_id = "25224a80-5a4a-4b8a-991e-6ab390465c4f"
+severity = "high"
+tags = ["Elastic", "Host", "Windows", "Threat Detection", "Lateral Movement"]
+type = "eql"
+
+query = '''
+file where event.type in ("creation", "change") and
+ /* via RDP TSClient mounted share or SMB */
+  (process.name : "mstsc.exe" or process.pid == 4) and
+   file.path : "C:\\*\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*"
+'''
+
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1021"
+name = "Remote Services"
+reference = "https://attack.mitre.org/techniques/T1021/"
+
+
+[rule.threat.tactic]
+id = "TA0008"
+name = "Lateral Movement"
+reference = "https://attack.mitre.org/tactics/TA0008/"
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1060"
+name = "Registry Run Keys / Startup Folder"
+reference = "https://attack.mitre.org/techniques/T1060/"
+
+
+[rule.threat.tactic]
+id = "TA0003"
+name = "Persistence"
+reference = "https://attack.mitre.org/tactics/TA0003/"