Attempt to Install Kali Linux via WSL

 1[metadata]
 2creation_date = "2023/01/12"
 3integration = ["endpoint", "windows", "system"]
 4maturity = "production"
 5updated_date = "2024/03/28"
 6min_stack_comments = "New fields added: required_fields, related_integrations, setup"
 7min_stack_version = "8.3.0"
 8
 9[rule]
10author = ["Elastic"]
11description = """
12Detects attempts to install or use Kali Linux via Windows Subsystem for Linux. Adversaries may 
13enable and use WSL for Linux to avoid detection.
14"""
15from = "now-9m"
16index = ["winlogbeat-*", "logs-endpoint.events.process-*", "logs-windows.*", "endgame-*", "logs-system.security*"]
17language = "eql"
18license = "Elastic License v2"
19name = "Attempt to Install Kali Linux via WSL"
20references = ["https://learn.microsoft.com/en-us/windows/wsl/wsl-config"]
21risk_score = 73
22rule_id = "dd34b062-b9e3-4a6b-8c0c-6c8ca6dd450e"
23severity = "high"
24tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Defense Evasion", "Data Source: Elastic Endgame", "Data Source: Elastic Defend"]
25timestamp_override = "event.ingested"
26type = "eql"
27
28query = '''
29process where host.os.type == "windows" and event.type == "start" and
30(
31 (process.name : "wsl.exe" and process.args : ("-d", "--distribution", "-i", "--install") and process.args : "kali*") or 
32 process.executable : 
33        ("?:\\Users\\*\\AppData\\Local\\packages\\kalilinux*", 
34         "?:\\Users\\*\\AppData\\Local\\Microsoft\\WindowsApps\\kali.exe",
35         "?:\\Program Files*\\WindowsApps\\KaliLinux.*\\kali.exe")
36 )
37'''
38
39
40[[rule.threat]]
41framework = "MITRE ATT&CK"
42[[rule.threat.technique]]
43id = "T1202"
44name = "Indirect Command Execution"
45reference = "https://attack.mitre.org/techniques/T1202/"
46
47
48[rule.threat.tactic]
49id = "TA0005"
50name = "Defense Evasion"
51reference = "https://attack.mitre.org/tactics/TA0005/"