[New Rule] Execution via Electron Child Process Node.js Module (#817)

* [New Rule] Execution via Electron ChildProc Node.js Module * relinted * fixed TID and adjusted KQL for perf * fixed kql * Update rules/macos/execution_defense_evasion_electron_app_childproc_node_js.toml Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com> * Update rules/macos/execution_defense_evasion_electron_app_childproc_node_js.toml Co-authored-by: David French <56409778+threat-punter@users.noreply.github.com> Co-authored-by: Brent Murphy <56412096+bm11100@users.noreply.github.com> Co-authored-by: David French <56409778+threat-punter@users.noreply.github.com>
2021-01-29 19:06:49 +01:00
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+[metadata]
+creation_date = "2020/01/07"
+maturity = "production"
+updated_date = "2020/01/07"
+
+[rule]
+author = ["Elastic"]
+description = """
+Identifies attempts to execute a child process from within the context of an Electron application using the
+child_process Node.js module. Adversaries may abuse this technique to inherit permissions from parent processes.
+"""
+from = "now-9m"
+index = ["auditbeat-*", "logs-endpoint.events.*"]
+language = "kuery"
+license = "Elastic License"
+name = "Execution via Electron Child Process Node.js Module"
+references = [
+    "https://www.matthewslipper.com/2019/09/22/everything-you-wanted-electron-child-process.html",
+    "https://www.trustedsec.com/blog/macos-injection-via-third-party-frameworks/",
+    "https://nodejs.org/api/child_process.html",
+]
+risk_score = 47
+rule_id = "35330ba2-c859-4c98-8b7f-c19159ea0e58"
+severity = "medium"
+tags = ["Elastic", "Host", "macOS", "Threat Detection", "Defense Evasion", "Execution"]
+type = "query"
+
+query = '''
+event.category:process and event.type:(start or process_started) and process.args:("-e" and const*require*child_process*)
+'''
+
+
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1059"
+name = "Command and Scripting Interpreter"
+reference = "https://attack.mitre.org/techniques/T1059/"
+
+
+[rule.threat.tactic]
+id = "TA0002"
+name = "Execution"
+reference = "https://attack.mitre.org/tactics/TA0002/"
+[[rule.threat]]
+framework = "MITRE ATT&CK"
+[[rule.threat.technique]]
+id = "T1548"
+name = "Abuse Elevation Control Mechanism"
+reference = "https://attack.mitre.org/techniques/T1548/"
+
+
+[rule.threat.tactic]
+id = "TA0005"
+name = "Defense Evasion"
+reference = "https://attack.mitre.org/tactics/TA0005/"