shashank-elastic
56 lines
2.1 KiB
TOML
56 lines
2.1 KiB
TOML
[metadata]
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creation_date = "2020/11/23"
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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 = "2023/10/23"
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[rule]
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author = ["Elastic"]
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description = "Detects attempts to establish persistence on an endpoint by installing a rogue Microsoft Outlook VBA Template."
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false_positives = ["A legitimate VBA for Outlook is usually configured interactively via OUTLOOK.EXE."]
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from = "now-9m"
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index = ["logs-endpoint.events.*", "winlogbeat-*", "logs-windows.*", "endgame-*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Persistence via Microsoft Outlook VBA"
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references = [
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"https://www.mdsec.co.uk/2020/11/a-fresh-outlook-on-mail-based-persistence/",
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"https://www.linkedin.com/pulse/outlook-backdoor-using-vba-samir-b-/",
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]
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risk_score = 47
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rule_id = "397945f3-d39a-4e6f-8bcb-9656c2031438"
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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 = "medium"
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tags = ["Domain: Endpoint", "OS: Windows", "Use Case: Threat Detection", "Tactic: Persistence", "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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file where host.os.type == "windows" and event.type != "deletion" and
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file.path : "C:\\Users\\*\\AppData\\Roaming\\Microsoft\\Outlook\\VbaProject.OTM"
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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 = "T1137"
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name = "Office Application Startup"
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reference = "https://attack.mitre.org/techniques/T1137/"
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[rule.threat.tactic]
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id = "TA0003"
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name = "Persistence"
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reference = "https://attack.mitre.org/tactics/TA0003/"
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