Justin Ibarra
97ee8cc9ac
* Refresh beats and ecs schemas and default to use latest to validate * remove incorrect ecs_version from zoom rule * remove stale ecs_version from rules
34 lines
1.3 KiB
TOML
34 lines
1.3 KiB
TOML
[metadata]
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creation_date = "2020/03/25"
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maturity = "production"
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updated_date = "2020/10/26"
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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 an unusual web URL request from a Linux host, which can indicate malware delivery and
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execution. Wget and cURL are commonly used by Linux programs to download code and data. Most of the time, their usage is
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entirely normal. Generally, because they use a list of URLs, they repeatedly download from the same locations. However,
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Wget and cURL are sometimes used to deliver Linux exploit payloads, and threat actors use these tools to download
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additional software and code. For these reasons, unusual URLs can indicate unauthorized downloads or threat activity.
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"""
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false_positives = [
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"""
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A new and unusual program or artifact download in the course of software upgrades, debugging, or troubleshooting
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could trigger this alert.
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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 = "linux_anomalous_network_url_activity_ecs"
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name = "Unusual Linux Web Activity"
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references = ["https://www.elastic.co/guide/en/security/current/prebuilt-ml-jobs.html"]
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risk_score = 21
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rule_id = "52afbdc5-db15-485e-bc35-f5707f820c4c"
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severity = "low"
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tags = ["Elastic", "Host", "Linux", "Threat Detection", "ML"]
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type = "machine_learning"
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