Justin Ibarra
61 lines
1.7 KiB
TOML
61 lines
1.7 KiB
TOML
[metadata]
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creation_date = "2020/09/02"
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ecs_version = ["1.6.0"]
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maturity = "production"
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updated_date = "2020/09/02"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies a suspicious file that was written by a PDF reader application and subsequently executed. These processes are
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often launched via exploitation of PDF applications.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.*", "winlogbeat-*"]
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language = "eql"
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license = "Elastic License"
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name = "Execution of File Written or Modified by PDF Reader"
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risk_score = 21
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rule_id = "1defdd62-cd8d-426e-a246-81a37751bb2b"
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severity = "high"
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tags = ["Elastic", "Windows"]
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type = "eql"
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query = '''
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sequence with maxspan=2h
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[file where event.type != "delete" and file.extension == "exe" and
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process.name in ("acrord32.exe", "rdrcef.exe", "foxitphantomPDF.exe", "foxitreader.exe") and
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file.name not in ("foxitphantomPDF.exe",
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"FoxitPhantomPDFUpdater.exe",
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"foxitreader.exe",
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"FoxitReaderUpdater.exe",
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"acrord32.exe",
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"rdrcef.exe")
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] by host.id, file.path
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[process where event.type in ("start", "process_started")] by host.id, process.executable
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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 = "T1064"
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name = "Scripting"
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reference = "https://attack.mitre.org/techniques/T1064/"
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[[rule.threat.technique]]
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id = "T1192"
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name = "Spearphishing Link"
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reference = "https://attack.mitre.org/techniques/T1192/"
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[[rule.threat.technique]]
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id = "T1193"
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name = "Spearphishing Attachment"
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reference = "https://attack.mitre.org/techniques/T1193/"
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[rule.threat.tactic]
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id = "TA0002"
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name = "Execution"
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reference = "https://attack.mitre.org/tactics/TA0002/"
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