Execution via TSClient Mountpoint

 1[metadata]
 2creation_date = "2020/11/11"
 3integration = ["endpoint", "windows"]
 4maturity = "production"
 5updated_date = "2024/05/21"
 6
 7[rule]
 8author = ["Elastic"]
 9description = """
10Identifies execution from the Remote Desktop Protocol (RDP) shared mountpoint tsclient on the target host. This may
11indicate a lateral movement attempt.
12"""
13from = "now-9m"
14index = [
15    "logs-endpoint.events.process-*",
16    "winlogbeat-*",
17    "logs-windows.*",
18    "endgame-*",
19    "logs-system.security*",
20]
21language = "eql"
22license = "Elastic License v2"
23name = "Execution via TSClient Mountpoint"
24references = ["https://posts.specterops.io/revisiting-remote-desktop-lateral-movement-8fb905cb46c3"]
25risk_score = 73
26rule_id = "4fe9d835-40e1-452d-8230-17c147cafad8"
27setup = """## Setup
28
29If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2,
30events will not define `event.ingested` and default fallback for EQL rules was not added until version 8.2.
31Hence for this rule to work effectively, users will need to add a custom ingest pipeline to populate
32`event.ingested` to @timestamp.
33For more details on adding a custom ingest pipeline refer - https://www.elastic.co/guide/en/fleet/current/data-streams-pipeline-tutorial.html
34"""
35severity = "high"
36tags = [
37    "Domain: Endpoint",
38    "OS: Windows",
39    "Use Case: Threat Detection",
40    "Tactic: Lateral Movement",
41    "Data Source: Elastic Endgame",
42    "Data Source: Elastic Defend",
43]
44timestamp_override = "event.ingested"
45type = "eql"
46
47query = '''
48process where host.os.type == "windows" and event.type == "start" and process.executable : "\\Device\\Mup\\tsclient\\*.exe"
49'''
50
51
52[[rule.threat]]
53framework = "MITRE ATT&CK"
54[[rule.threat.technique]]
55id = "T1021"
56name = "Remote Services"
57reference = "https://attack.mitre.org/techniques/T1021/"
58[[rule.threat.technique.subtechnique]]
59id = "T1021.001"
60name = "Remote Desktop Protocol"
61reference = "https://attack.mitre.org/techniques/T1021/001/"
62
63
64
65[rule.threat.tactic]
66id = "TA0008"
67name = "Lateral Movement"
68reference = "https://attack.mitre.org/tactics/TA0008/"