shashank-elastic
62 lines
2.2 KiB
TOML
62 lines
2.2 KiB
TOML
[metadata]
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creation_date = "2020/10/16"
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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 abusing Microsoft Office add-ins."
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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 Office AddIns"
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references = ["https://labs.withsecure.com/publications/add-in-opportunities-for-office-persistence"]
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risk_score = 73
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rule_id = "f44fa4b6-524c-4e87-8d9e-a32599e4fb7c"
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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: 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.extension : ("wll","xll","ppa","ppam","xla","xlam") and
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file.path :
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(
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"C:\\Users\\*\\AppData\\Roaming\\Microsoft\\Word\\Startup\\*",
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"C:\\Users\\*\\AppData\\Roaming\\Microsoft\\AddIns\\*",
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"C:\\Users\\*\\AppData\\Roaming\\Microsoft\\Excel\\XLSTART\\*"
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)
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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.technique.subtechnique]]
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id = "T1137.006"
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name = "Add-ins"
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reference = "https://attack.mitre.org/techniques/T1137/006/"
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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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