Terrance DeJesus
b8ae2218f8
* add beats compatability to NPC rules * added filebeat compatibility to 'Accepted Default Telnet Port Connection' * added filebeat compatibility to 'Cobalt Strike Command and Control Beacon' * added filebeat compatibility to 'Default Cobalt Strike Team Server Certificate' * added filebeat compatibility to 'Roshal Archive (RAR) or PowerShell File Downloaded from the Internet' * added filebeat compatibility to 'Possible FIN7 DGA Command and Control Behavior' * added filebeat compatibility to 'Halfbaked Command and Control Beacon' * added filebeat compatibility to 'IPSEC NAT Traversal Port Activity' * added filebeat compatibility to 'SMTP on Port 26/TCP' * added filebeat compatibility to 'RDP (Remote Desktop Protocol) from the Internet' * added filebeat compatibility to 'VNC (Virtual Network Computing) from the Internet' * added filebeat compatibility to 'VNC (Virtual Network Computing) to the Internet' * added filebeat compatibility to 'RPC (Remote Procedure Call) from the Internet' * added filebeat compatibility to 'RPC (Remote Procedure Call) to the Internet' * added filebeat compatibility to 'SMB (Windows File Sharing) Activity to the Internet' * removed extra space in query * added filebeat compatibility to 'Inbound Connection to an Unsecure Elasticsearch Node' * added filebeat compatibility to 'Abnormally Large DNS Response' * fixed missing ending parenthesis * added auditbeat to compatible rules * addressed feedback * removed filebeat and auditbeat due to incompatibility * Update rules/network/command_and_control_cobalt_strike_beacon.toml * Update rules/network/command_and_control_accepted_default_telnet_port_connection.toml Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com> --------- Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com> Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>
60 lines
2.1 KiB
TOML
60 lines
2.1 KiB
TOML
[metadata]
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creation_date = "2020/08/11"
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integration = ["network_traffic"]
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maturity = "production"
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min_stack_comments = "New fields added: required_fields, related_integrations, setup"
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min_stack_version = "8.3.0"
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updated_date = "2023/08/01"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies Elasticsearch nodes that do not have Transport Layer Security (TLS), and/or lack authentication, and are
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accepting inbound network connections over the default Elasticsearch port.
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"""
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false_positives = [
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"""
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If you have front-facing proxies that provide authentication and TLS, this rule would need to be tuned to eliminate
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the source IP address of your reverse-proxy.
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""",
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]
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from = "now-9m"
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index = ["packetbeat-*", "logs-network_traffic.*"]
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language = "lucene"
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license = "Elastic License v2"
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name = "Inbound Connection to an Unsecure Elasticsearch Node"
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note = """## Setup
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This rule requires the addition of port `9200` and `send_all_headers` to the `HTTP` protocol configuration in `packetbeat.yml`. See the References section for additional configuration documentation."""
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references = [
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"https://www.elastic.co/guide/en/elasticsearch/reference/current/configuring-security.html",
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"https://www.elastic.co/guide/en/beats/packetbeat/current/packetbeat-http-options.html#_send_all_headers",
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]
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risk_score = 47
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rule_id = "31295df3-277b-4c56-a1fb-84e31b4222a9"
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severity = "medium"
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tags = ["Use Case: Threat Detection", "Tactic: Initial Access", "Domain: Endpoint"]
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timestamp_override = "event.ingested"
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type = "query"
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query = '''
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(event.dataset: network_traffic.http or (event.category: network_traffic and network.protocol: http)) and
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status:OK and destination.port:9200 and network.direction:inbound and NOT http.response.headers.content-type:"image/x-icon" and not
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_exists_:http.request.headers.authorization
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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 = "T1190"
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name = "Exploit Public-Facing Application"
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reference = "https://attack.mitre.org/techniques/T1190/"
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[rule.threat.tactic]
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id = "TA0001"
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name = "Initial Access"
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reference = "https://attack.mitre.org/tactics/TA0001/"
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