Python Script Execution via Command Line

 1[metadata]
 2creation_date = "2021/01/13"
 3integration = ["endpoint"]
 4maturity = "development"
 5updated_date = "2023/06/22"
 6
 7[rule]
 8author = ["Elastic"]
 9description = """
10Identifies when a Python script is executed using command line input and imports the sys module. Attackers often use
11this method to execute malicious scripts and avoiding writing it to disk.
12"""
13false_positives = ["Legitimate Python scripting activity."]
14from = "now-9m"
15index = ["auditbeat-*", "logs-endpoint.events.*"]
16language = "eql"
17license = "Elastic License v2"
18name = "Python Script Execution via Command Line"
19note = """## Setup
20
21If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
22"""
23risk_score = 47
24rule_id = "ee9f08dc-cf80-4124-94ae-08c405f059ae"
25severity = "medium"
26tags = ["Domain: Endpoint", "OS: Linux", "OS: macOS", "OS: Windows", "Use Case: Threat Detection", "Tactic: Execution", "Data Source: Elastic Defend"]
27timestamp_override = "event.ingested"
28type = "eql"
29
30query = '''
31process where event.type in ("start", "process_started") and
32 process.name : "python*" and process.args : "-c" and process.args : "*import*sys*"
33'''
34
35
36[[rule.threat]]
37framework = "MITRE ATT&CK"
38[[rule.threat.technique]]
39id = "T1059"
40name = "Command and Scripting Interpreter"
41reference = "https://attack.mitre.org/techniques/T1059/"
42[[rule.threat.technique.subtechnique]]
43id = "T1059.006"
44name = "Python"
45reference = "https://attack.mitre.org/techniques/T1059/006/"
46[[rule.threat.technique.subtechnique]]
47id = "T1059.003"
48name = "Windows Command Shell"
49reference = "https://attack.mitre.org/techniques/T1059/003/"
50
51
52
53[rule.threat.tactic]
54id = "TA0002"
55name = "Execution"
56reference = "https://attack.mitre.org/tactics/TA0002/"