Jonhnathan
7b1215ccf1
* [Rule Tuning] Windows DR Tuning - 8 * Update rules/windows/defense_evasion_unusual_system_vp_child_program.toml Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com> * Update rules/windows/defense_evasion_via_filter_manager.toml Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com> * Update rules/windows/defense_evasion_via_filter_manager.toml Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com> --------- Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
52 lines
1.9 KiB
TOML
52 lines
1.9 KiB
TOML
[metadata]
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creation_date = "2020/08/19"
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integration = ["endpoint", "windows"]
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maturity = "production"
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min_stack_comments = "New fields added: required_fields, related_integrations, setup"
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min_stack_version = "8.3.0"
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updated_date = "2023/12/21"
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[rule]
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author = ["Elastic"]
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description = "Identifies a suspicious child process of the Windows virtual system process, which could indicate code injection."
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from = "now-9m"
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index = ["winlogbeat-*", "logs-endpoint.events.*", "logs-windows.*", "endgame-*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Unusual Child Process from a System Virtual Process"
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risk_score = 73
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rule_id = "de9bd7e0-49e9-4e92-a64d-53ade2e66af1"
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setup = """
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If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2,
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events will not define `event.ingested` and default fallback for EQL rules was not added until version 8.2.
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Hence for this rule to work effectively, users will need to add a custom ingest pipeline to populate
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`event.ingested` to @timestamp.
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For more details on adding a custom ingest pipeline refer - https://www.elastic.co/guide/en/fleet/current/data-streams-pipeline-tutorial.html
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"""
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severity = "high"
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tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Defense Evasion", "Data Source: Elastic Endgame", "Data Source: Elastic Defend"]
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timestamp_override = "event.ingested"
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type = "eql"
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query = '''
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process where host.os.type == "windows" and event.type == "start" and
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process.parent.pid == 4 and process.executable : "?*" and
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not process.executable : ("Registry", "MemCompression", "?:\\Windows\\System32\\smss.exe")
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'''
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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[[rule.threat.technique]]
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id = "T1055"
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name = "Process Injection"
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reference = "https://attack.mitre.org/techniques/T1055/"
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[rule.threat.tactic]
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id = "TA0005"
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name = "Defense Evasion"
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reference = "https://attack.mitre.org/tactics/TA0005/"
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