Ross Wolf
5fcece8416
Co-Authored-By: Brent Murphy <56412096+bm11100@users.noreply.github.com> Co-Authored-By: Craig Chamberlain <randomuserid@users.noreply.github.com> Co-Authored-By: David French <56409778+threat-punter@users.noreply.github.com> Co-Authored-By: Derek Ditch <dcode@users.noreply.github.com> Co-Authored-By: Justin Ibarra <brokensound77@users.noreply.github.com>
32 lines
983 B
TOML
32 lines
983 B
TOML
[metadata]
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creation_date = "2020/03/25"
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ecs_version = ["1.5.0"]
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maturity = "production"
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updated_date = "2020/03/25"
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[rule]
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anomaly_threshold = 50
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author = ["Elastic"]
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description = """
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A machine learning job detected a PowerShell script with unusual data characteristics, such as obfuscation, that may be
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a characteristic of malicious PowerShell script text blocks.
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"""
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false_positives = [
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"""
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Certain kinds of security testing may trigger this signal. PowerShell scripts that use high levels of obfuscation or
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have unusual script block payloads may trigger this signal.
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""",
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]
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from = "now-45m"
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interval = "15m"
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license = "Elastic License"
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machine_learning_job_id = "windows_anomalous_script"
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name = "Suspicious Powershell Script"
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references = ["https://www.elastic.co/guide/en/siem/guide/current/prebuilt-ml-jobs.html"]
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risk_score = 21
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rule_id = "1781d055-5c66-4adf-9d60-fc0fa58337b6"
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severity = "low"
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tags = ["Elastic", "ML", "Windows"]
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type = "machine_learning"
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