Potential Cookies Theft via Browser Debugging

 1[metadata]
 2creation_date = "2020/12/21"
 3integration = ["endpoint", "windows"]
 4maturity = "production"
 5min_stack_comments = "New fields added: required_fields, related_integrations, setup"
 6min_stack_version = "8.3.0"
 7updated_date = "2023/10/19"
 8
 9[rule]
10author = ["Elastic"]
11description = """
12Identifies the execution of a Chromium based browser with the debugging process argument, which may indicate an attempt
13to steal authentication cookies. An adversary may steal web application or service session cookies and use them to gain
14access web applications or Internet services as an authenticated user without needing credentials.
15"""
16false_positives = ["Developers performing browsers plugin or extension debugging."]
17from = "now-9m"
18index = ["auditbeat-*", "winlogbeat-*", "logs-endpoint.events.*", "logs-windows.*"]
19language = "eql"
20license = "Elastic License v2"
21max_signals = 33
22name = "Potential Cookies Theft via Browser Debugging"
23references = [
24    "https://github.com/defaultnamehere/cookie_crimes",
25    "https://embracethered.com/blog/posts/2020/cookie-crimes-on-mirosoft-edge/",
26    "https://github.com/rapid7/metasploit-framework/blob/master/documentation/modules/post/multi/gather/chrome_cookies.md",
27    "https://posts.specterops.io/hands-in-the-cookie-jar-dumping-cookies-with-chromiums-remote-debugger-port-34c4f468844e",
28]
29risk_score = 47
30rule_id = "027ff9ea-85e7-42e3-99d2-bbb7069e02eb"
31setup = """## Setup
32
33If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2,
34events will not define `event.ingested` and default fallback for EQL rules was not added until version 8.2.
35Hence for this rule to work effectively, users will need to add a custom ingest pipeline to populate
36`event.ingested` to @timestamp.
37For more details on adding a custom ingest pipeline refer - https://www.elastic.co/guide/en/fleet/current/data-streams-pipeline-tutorial.html
38"""
39severity = "medium"
40tags = ["Domain: Endpoint", "OS: Linux", "OS: Windows", "OS: macOS", "Use Case: Threat Detection", "Tactic: Credential Access", "Data Source: Elastic Defend"]
41timestamp_override = "event.ingested"
42type = "eql"
43
44query = '''
45process where event.type in ("start", "process_started", "info") and
46  process.name in (
47             "Microsoft Edge",
48             "chrome.exe",
49             "Google Chrome",
50             "google-chrome-stable",
51             "google-chrome-beta",
52             "google-chrome",
53             "msedge.exe") and
54   process.args : ("--remote-debugging-port=*",
55                   "--remote-debugging-targets=*",
56                   "--remote-debugging-pipe=*") and
57   process.args : "--user-data-dir=*" and not process.args:"--remote-debugging-port=0"
58'''
59
60
61[[rule.threat]]
62framework = "MITRE ATT&CK"
63[[rule.threat.technique]]
64id = "T1539"
65name = "Steal Web Session Cookie"
66reference = "https://attack.mitre.org/techniques/T1539/"
67
68
69[rule.threat.tactic]
70id = "TA0006"
71name = "Credential Access"
72reference = "https://attack.mitre.org/tactics/TA0006/"