seth-goodwin
2065af89b1
* Add new categorization tags * Change updated_date to 2020/10/26 Co-authored-by: Ross Wolf <31489089+rw-access@users.noreply.github.com>, @bm11100
52 lines
1.6 KiB
TOML
52 lines
1.6 KiB
TOML
[metadata]
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creation_date = "2020/04/23"
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ecs_version = ["1.6.0"]
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maturity = "production"
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updated_date = "2020/10/26"
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[rule]
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author = ["Elastic"]
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description = """
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Telnet provides a command line interface for communication with a remote device or server. This rule identifies Telnet
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network connections to publicly routable IP addresses.
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"""
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false_positives = [
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"""
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Telnet can be used for both benign or malicious purposes. Telnet is included by default in some Linux distributions,
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so its presence is not inherently suspicious. The use of Telnet to manage devices remotely has declined in recent
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years in favor of more secure protocols such as SSH. Telnet usage by non-automated tools or frameworks may be
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suspicious.
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""",
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]
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from = "now-9m"
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index = ["auditbeat-*", "logs-endpoint.events.*"]
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language = "kuery"
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license = "Elastic License"
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name = "Connection to External Network via Telnet"
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risk_score = 47
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rule_id = "e19e64ee-130e-4c07-961f-8a339f0b8362"
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severity = "medium"
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tags = ["Elastic", "Host", "Linux", "Threat Detection", "Lateral Movement"]
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type = "query"
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query = '''
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event.category:network and event.type:(connection or start) and
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process.name:telnet and
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not destination.ip:(127.0.0.0/8 or 10.0.0.0/8 or 172.16.0.0/12 or 192.168.0.0/16 or "FE80::/10" or "::1/128")
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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 = "T1021"
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name = "Remote Services"
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reference = "https://attack.mitre.org/techniques/T1021/"
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[rule.threat.tactic]
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id = "TA0008"
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name = "Lateral Movement"
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reference = "https://attack.mitre.org/tactics/TA0008/"
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