Mika Ayenson, PhD
8993d1450b
--------- Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com> Co-authored-by: Isai <59296946+imays11@users.noreply.github.com> Co-authored-by: terrancedejesus <terrance.dejesus@elastic.co> Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com> Co-authored-by: eric-forte-elastic <eric.forte@elastic.co>
75 lines
1.9 KiB
TOML
75 lines
1.9 KiB
TOML
[metadata]
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creation_date = "2023/08/21"
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integration = ["endpoint", "windows", "system"]
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maturity = "production"
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updated_date = "2026/03/24"
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[rule]
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author = ["Elastic"]
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building_block_type = "default"
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description = """
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Identifies commands containing references to Outlook data files extensions, which can potentially indicate the search,
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access, or modification of these files.
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"""
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from = "now-119m"
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index = [
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"endgame-*",
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"logs-endpoint.events.process-*",
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"logs-system.security*",
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"logs-windows.sysmon_operational-*",
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"winlogbeat-*",
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]
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interval = "60m"
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language = "eql"
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license = "Elastic License v2"
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name = "Accessing Outlook Data Files"
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risk_score = 21
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rule_id = "2e311539-cd88-4a85-a301-04f38795007c"
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severity = "low"
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tags = [
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"Domain: Endpoint",
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"OS: Windows",
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"Use Case: Threat Detection",
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"Tactic: Collection",
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"Data Source: Elastic Defend",
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"Rule Type: BBR",
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"Data Source: Sysmon",
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"Data Source: Elastic Endgame",
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"Data Source: Windows Security Event Logs",
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]
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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 process.args : ("*.ost", "*.pst") and
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not process.name : "outlook.exe" and
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not (
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process.name : "rundll32.exe" and
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process.args : "*davclnt.dll,DavSetCookie*"
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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 = "T1005"
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name = "Data from Local System"
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reference = "https://attack.mitre.org/techniques/T1005/"
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[[rule.threat.technique]]
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id = "T1114"
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name = "Email Collection"
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reference = "https://attack.mitre.org/techniques/T1114/"
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[[rule.threat.technique.subtechnique]]
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id = "T1114.001"
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name = "Local Email Collection"
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reference = "https://attack.mitre.org/techniques/T1114/001/"
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[rule.threat.tactic]
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id = "TA0009"
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name = "Collection"
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reference = "https://attack.mitre.org/tactics/TA0009/"
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