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>
69 lines
2.0 KiB
TOML
69 lines
2.0 KiB
TOML
[metadata]
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creation_date = "2023/07/11"
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integration = ["endpoint"]
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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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Adversaries may attempt to get a listing of network connections to or from a compromised system.
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"""
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from = "now-119m"
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index = ["logs-endpoint.events.*"]
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interval = "60m"
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language = "kuery"
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license = "Elastic License v2"
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name = "System Network Connections Discovery"
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risk_score = 21
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rule_id = "e2dc8f8c-5f16-42fa-b49e-0eb8057f7444"
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severity = "low"
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tags = [
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"Domain: Endpoint",
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"OS: Linux",
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"OS: macOS",
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"Use Case: Threat Detection",
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"Tactic: Discovery",
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"Rule Type: BBR",
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"Data Source: Elastic Defend",
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]
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timestamp_override = "event.ingested"
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type = "new_terms"
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query = '''
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event.category:process and host.os.type:(linux or macos) and event.type:start and event.action:exec and
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process.name:("netstat" or "lsof" or "ss" or "iftop" or "ip" or "nmcli" or "arp" or "route" or "ifconfig" or "netcfg" or "networksetup") and
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not (
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process.parent.executable:(
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/Library/Elastic/Agent/* or "/Applications/Docker.app/Contents/MacOS/com.docker.backend" or
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"/opt/NinjaRMMAgent/programfiles/ninjarmm-linagent" or "/usr/local/ASR/Vx/bin/svagents"
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) or
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process.working_directory:("/var/ossec" or "/usr/lib/check_mk_agent/plugins" or "/opt/microsoft/mdatp/sbin")
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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 = "T1016"
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name = "System Network Configuration Discovery"
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reference = "https://attack.mitre.org/techniques/T1016/"
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[[rule.threat.technique]]
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id = "T1049"
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name = "System Network Connections Discovery"
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reference = "https://attack.mitre.org/techniques/T1049/"
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[rule.threat.tactic]
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id = "TA0007"
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name = "Discovery"
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reference = "https://attack.mitre.org/tactics/TA0007/"
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[rule.new_terms]
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field = "new_terms_fields"
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value = ["process.parent.executable", "process.command_line", "host.id"]
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[[rule.new_terms.history_window_start]]
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field = "history_window_start"
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value = "now-5d"
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