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asa-ftd-pipeline.yml
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asa-ftd-pipeline.yml
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description: "Pipeline for Cisco {< .internal_PREFIX >} logs"
processors:
#
# Parse the syslog header
#
# This populates the host.hostname, process.name, timestamp and other fields
# from the header and stores the message contents in log.original.
- grok:
field: message
patterns:
- "(?:%{SYSLOG_HEADER})?\\s*%{GREEDYDATA:log.original}"
pattern_definitions:
SYSLOG_HEADER: "(?:%{SYSLOGFACILITY}\\s*)?(?:%{FTD_DATE:_temp_.raw_date})?(?:\\s+%{SYSLOGHOST:host.hostname})?(?: %{PROCESS:process.name}?(?:\\[%{POSINT:process.pid:long}\\])?)?(?:{DATA})?%{SYSLOG_END}"
SYSLOGFACILITY: "<%{NONNEGINT:syslog.facility:int}(?:.%{NONNEGINT:syslog.priority:int})?>"
# Beginning with version 6.3, Firepower Threat Defense provides the option to enable timestamp as per RFC 5424.
FTD_DATE: "(?:%{TIMESTAMP_ISO8601}|%{ASA_DATE})"
ASA_DATE: "(?:%{DAY} )?%{MONTH} *%{MONTHDAY}(?: %{YEAR})? %{TIME}(?: %{TZ})?"
PROCESS: "(?:[^\\s:\\[]+)"
SYSLOG_END: "(?::|\\s\\s+)"
#
# Parse FTD/ASA style message
#
# This parses the header of an EMBLEM-style message for FTD and ASA prefixes.
- grok:
field: log.original
patterns:
- "%{FTD_PREFIX}-(?:%{FTD_SUFFIX:_temp_.cisco.suffix}-)?%{POSINT:event.severity:int}-%{POSINT:_temp_.cisco.message_id}?:?\\s*%{GREEDYDATA:message}"
# Before version 6.3, messages for connection, security intelligence, and intrusion events didn't include an event type ID in the message header.
- "%{GREEDYDATA:message}"
pattern_definitions:
FTD_SUFFIX: "[^0-9-]+"
# Before version 6.3, FTD used ASA prefix in syslog messages
FTD_PREFIX: "%{DATA}%(?:FTD|ASA)"
#
# Create missing fields when no %FTD label is present
#
# message_id is needed in order for some processors below to work.
- set:
field: _temp_.cisco.message_id
value: ''
if: "ctx?._temp_?.cisco?.message_id == null"
#
# set default event.severity to 7 (debug):
#
# This value is read from the EMBLEM header and won't be present if this is not
# an emblem message (firewalls can be configured to report other kinds of events)
# This has no effect unless var.log_level is above 7 (default) to filter some
# messages.
- set:
field: event.severity
value: 7
if: "ctx?.event?.severity == null"
#
# Drop messages above configured log_level
#
- drop:
if: "ctx.event.severity > {< .log_level >}"
#
# Parse the date included in FTD logs
#
- date:
if: "ctx.event.timezone == null"
field: "_temp_.raw_date"
target_field: "@timestamp"
formats:
- "ISO8601"
- "MMM d HH:mm:ss"
- "MMM dd HH:mm:ss"
- "EEE MMM d HH:mm:ss"
- "EEE MMM dd HH:mm:ss"
- "MMM d HH:mm:ss z"
- "MMM dd HH:mm:ss z"
- "EEE MMM d HH:mm:ss z"
- "EEE MMM dd HH:mm:ss z"
- "MMM d yyyy HH:mm:ss"
- "MMM dd yyyy HH:mm:ss"
- "EEE MMM d yyyy HH:mm:ss"
- "EEE MMM dd yyyy HH:mm:ss"
- "MMM d yyyy HH:mm:ss z"
- "MMM dd yyyy HH:mm:ss z"
- "EEE MMM d yyyy HH:mm:ss z"
- "EEE MMM dd yyyy HH:mm:ss z"
on_failure: [{"append": {"field": "error.message", "value": "{{ _ingest.on_failure_message }}"}}]
- date:
if: "ctx.event.timezone != null"
timezone: "{{ event.timezone }}"
field: "_temp_.raw_date"
target_field: "@timestamp"
formats:
- "ISO8601"
- "MMM d HH:mm:ss"
- "MMM dd HH:mm:ss"
- "EEE MMM d HH:mm:ss"
- "EEE MMM dd HH:mm:ss"
- "MMM d HH:mm:ss z"
- "MMM dd HH:mm:ss z"
- "EEE MMM d HH:mm:ss z"
- "EEE MMM dd HH:mm:ss z"
- "MMM d yyyy HH:mm:ss"
- "MMM dd yyyy HH:mm:ss"
- "EEE MMM d yyyy HH:mm:ss"
- "EEE MMM dd yyyy HH:mm:ss"
- "MMM d yyyy HH:mm:ss z"
- "MMM dd yyyy HH:mm:ss z"
- "EEE MMM d yyyy HH:mm:ss z"
- "EEE MMM dd yyyy HH:mm:ss z"
on_failure: [{"append": {"field": "error.message", "value": "{{ _ingest.on_failure_message }}"}}]
#
# Set log.level
#
- set:
field: "log.level"
if: "ctx.event.severity == 0"
value: unknown
- set:
field: "log.level"
if: "ctx.event.severity == 1"
value: alert
- set:
field: "log.level"
if: "ctx.event.severity == 2"
value: critical
- set:
field: "log.level"
if: "ctx.event.severity == 3"
value: error
- set:
field: "log.level"
if: "ctx.event.severity == 4"
value: warning
- set:
field: "log.level"
if: "ctx.event.severity == 5"
value: notification
- set:
field: "log.level"
if: "ctx.event.severity == 6"
value: informational
- set:
field: "log.level"
if: "ctx.event.severity == 7"
value: debug
#
# Firewall messages
#
# This set of messages is shared between FTD and ASA.
- set:
if: 'ctx._temp_.cisco.message_id != ""'
field: "event.action"
value: "firewall-rule"
- dissect:
if: "ctx._temp_.cisco.message_id == '106001'"
field: "message"
pattern: "%{network.direction} %{network.transport} connection %{event.outcome} from %{source.address}/%{source.port} to %{destination.address}/%{destination.port} flags %{} on interface %{_temp_.cisco.source_interface}"
- dissect:
if: "ctx._temp_.cisco.message_id == '106002'"
field: "message"
pattern: "%{network.transport} Connection %{event.outcome} by %{network.direction} list %{_temp_.cisco.list_id} src %{source.address} dest %{destination.address}"
- dissect:
if: "ctx._temp_.cisco.message_id == '106006'"
field: "message"
pattern: "%{event.outcome} %{network.direction} %{network.transport} from %{source.address}/%{source.port} to %{destination.address}/%{destination.port} on interface %{_temp_.cisco.source_interface}"
- dissect:
if: "ctx._temp_.cisco.message_id == '106007'"
field: "message"
pattern: "%{event.outcome} %{network.direction} %{network.transport} from %{source.address}/%{source.port} to %{destination.address}/%{destination.port} due to %{network.protocol} %{}"
- dissect:
if: "ctx._temp_.cisco.message_id == '106010'"
field: "message"
pattern: "%{event.outcome} %{network.direction} %{network.transport} src %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} %{} dst %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} %{}"
- dissect:
if: "ctx._temp_.cisco.message_id == '106013'"
field: "message"
pattern: "Dropping echo request from %{source.address} to PAT address %{destination.address}"
- set:
if: "ctx._temp_.cisco.message_id == '106013'"
field: "network.transport"
value: icmp
- set:
if: "ctx._temp_.cisco.message_id == '106013'"
field: "network.direction"
value: inbound
- dissect:
if: "ctx._temp_.cisco.message_id == '106014'"
field: "message"
pattern: "%{event.outcome} %{network.direction} %{network.transport} src %{_temp_.cisco.source_interface}:%{source.address} %{}dst %{_temp_.cisco.destination_interface}:%{destination.address} %{}"
- dissect:
if: "ctx._temp_.cisco.message_id == '106015'"
field: "message"
pattern: "%{event.outcome} %{network.transport} (no connection) from %{source.address}/%{source.port} to %{destination.address}/%{destination.port} flags %{} on interface %{_temp_.cisco.source_interface}"
- dissect:
if: "ctx._temp_.cisco.message_id == '106016'"
field: "message"
pattern: "%{event.outcome} IP spoof from (%{source.address}) to %{destination.address} on interface %{_temp_.cisco.source_interface}"
- dissect:
if: "ctx._temp_.cisco.message_id == '106017'"
field: "message"
pattern: "%{event.outcome} IP due to Land Attack from %{source.address} to %{destination.address}"
- dissect:
if: "ctx._temp_.cisco.message_id == '106018'"
field: "message"
pattern: "%{network.transport} packet type %{_temp_.cisco.icmp_type} %{event.outcome} by %{network.direction} list %{_temp_.cisco.list_id} src %{source.address} dest %{destination.address}"
- dissect:
if: "ctx._temp_.cisco.message_id == '106020'"
field: "message"
pattern: "%{event.outcome} IP teardrop fragment (size = %{}, offset = %{}) from %{source.address} to %{destination.address}"
- dissect:
if: "ctx._temp_.cisco.message_id == '106021'"
field: "message"
pattern: "%{event.outcome} %{network.transport} reverse path check from %{source.address} to %{destination.address} on interface %{_temp_.cisco.source_interface}"
- dissect:
if: "ctx._temp_.cisco.message_id == '106022'"
field: "message"
pattern: "%{event.outcome} %{network.transport} connection spoof from %{source.address} to %{destination.address} on interface %{_temp_.cisco.source_interface}"
- dissect:
if: "ctx._temp_.cisco.message_id == '106023'"
field: "message"
pattern: "%{event.outcome} %{network.transport} src %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} dst %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} %{} access%{}group \"%{_temp_.cisco.list_id}\"%{}"
- dissect:
if: "ctx._temp_.cisco.message_id == '106027'"
field: "message"
pattern: "%{} %{event.outcome} src %{source.address} dst %{destination.address} by access-group \"%{_temp_.cisco.list_id}\""
- dissect:
if: "ctx._temp_.cisco.message_id == '106100'"
field: "message"
pattern: "access-list %{_temp_.cisco.list_id} %{event.outcome} %{network.transport} %{_temp_.cisco.source_interface}/%{source.address}(%{source.port}) -> %{_temp_.cisco.destination_interface}/%{destination.address}(%{destination.port}) %{}"
- dissect:
if: "ctx._temp_.cisco.message_id == '106102'"
field: "message"
pattern: "access-list %{_temp_.cisco.list_id} %{event.outcome} %{network.transport} for user %{_temp_.cisco.username} %{_temp_.cisco.source_interface}/%{source.address} %{source.port} %{_temp_.cisco.destination_interface}/%{destination.address} %{destination.port} %{}"
- dissect:
if: "ctx._temp_.cisco.message_id == '106103'"
field: "message"
pattern: "access-list %{_temp_.cisco.list_id} %{event.outcome} %{network.transport} for user %{_temp_.cisco.username} %{_temp_.cisco.source_interface}/%{source.address} %{source.port} %{_temp_.cisco.destination_interface}/%{destination.address} %{destination.port} %{}"
- dissect:
if: "ctx._temp_.cisco.message_id == '304001'"
field: "message"
pattern: "%{source.address} %{}ccessed URL %{destination.address}:%{url.original}"
- set:
if: "ctx._temp_.cisco.message_id == '304001'"
field: "event.outcome"
value: allow
- dissect:
if: "ctx._temp_.cisco.message_id == '304002'"
field: "message"
pattern: "Access %{event.outcome} URL %{url.original} SRC %{source.address} %{}EST %{destination.address} on interface %{_temp_.cisco.source_interface}"
- dissect:
if: "ctx._temp_.cisco.message_id == '313001'"
field: "message"
pattern: "%{event.outcome} %{network.transport} type=%{_temp_.cisco.icmp_type}, code=%{_temp_.cisco.icmp_code} from %{source.address} on interface %{_temp_.cisco.source_interface}"
- dissect:
if: "ctx._temp_.cisco.message_id == '313004'"
field: "message"
pattern: "%{event.outcome} %{network.transport} type=%{_temp_.cisco.icmp_type}, from%{}addr %{source.address} on interface %{_temp_.cisco.source_interface} to %{destination.address}: no matching session"
- dissect:
if: "ctx._temp_.cisco.message_id == '313005'"
field: "message"
pattern: "No matching connection for %{network.transport} error message: %{} on %{_temp_.cisco.source_interface} interface.%{}riginal IP payload: %{}"
- dissect:
if: "ctx._temp_.cisco.message_id == '313008'"
field: "message"
pattern: "%{event.outcome} %{network.transport} type=%{_temp_.cisco.icmp_type} , code=%{_temp_.cisco.icmp_code} from %{source.address} on interface %{_temp_.cisco.source_interface}"
- dissect:
if: "ctx._temp_.cisco.message_id == '313009'"
field: "message"
pattern: "%{event.outcome} invalid %{network.transport} code %{_temp_.cisco.icmp_code} , for %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} (%{_temp_.cisco.mapped_source_ip}/%{_temp_.cisco.mapped_source_port}) to %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} (%{_temp_.cisco.mapped_destination_ip}/%{_temp_.cisco.mapped_destination_port})%{}"
- dissect:
if: "ctx._temp_.cisco.message_id == '322001'"
field: "message"
pattern: "%{event.outcome} MAC address %{source.mac}, possible spoof attempt on interface %{_temp_.cisco.source_interface}"
- dissect:
if: "ctx._temp_.cisco.message_id == '338001'"
field: "message"
pattern: "Dynamic filter %{event.outcome} black%{}d %{network.transport} traffic from %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} (%{_temp_.cisco.mapped_source_ip}/%{_temp_.cisco.mapped_source_port}) to %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} (%{_temp_.cisco.mapped_destination_ip}/%{_temp_.cisco.mapped_destination_port})%{}source %{} resolved from %{_temp_.cisco.list_id} list: %{source.domain}, threat-level: %{_temp_.cisco.threat_level}, category: %{_temp_.cisco.threat_category}"
- set:
if: "ctx._temp_.cisco.message_id == '338001'"
field: "server.domain"
value: "{{source.domain}}"
- dissect:
if: "ctx._temp_.cisco.message_id == '338002'"
field: "message"
pattern: "Dynamic %{}ilter %{event.outcome} black%{}d %{network.transport} traffic from %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} (%{_temp_.cisco.mapped_source_ip}/%{_temp_.cisco.mapped_source_port}) to %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} (%{_temp_.cisco.mapped_destination_ip}/%{_temp_.cisco.mapped_destination_port})%{}destination %{} resolved from %{_temp_.cisco.list_id} list: %{destination.domain}"
- set:
if: "ctx._temp_.cisco.message_id == '338002'"
field: "server.domain"
value: "{{destination.domain}}"
- dissect:
if: "ctx._temp_.cisco.message_id == '338003'"
field: "message"
pattern: "Dynamic %{}ilter %{event.outcome} black%{}d %{network.transport} traffic from %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} (%{_temp_.cisco.mapped_source_ip}/%{_temp_.cisco.mapped_source_port}) to %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} (%{_temp_.cisco.mapped_destination_ip}/%{_temp_.cisco.mapped_destination_port})%{}source %{} resolved from %{_temp_.cisco.list_id} list: %{}, threat-level: %{_temp_.cisco.threat_level}, category: %{_temp_.cisco.threat_category}"
- dissect:
if: "ctx._temp_.cisco.message_id == '338004'"
field: "message"
pattern: "Dynamic %{}ilter %{event.outcome} black%{}d %{network.transport} traffic from %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} (%{_temp_.cisco.mapped_source_ip}/%{_temp_.cisco.mapped_source_port}) to %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} (%{_temp_.cisco.mapped_destination_ip}/%{_temp_.cisco.mapped_destination_port})%{}destination %{} resolved from %{_temp_.cisco.list_id} list: %{}, threat-level: %{_temp_.cisco.threat_level}, category: %{_temp_.cisco.threat_category}"
- dissect:
if: "ctx._temp_.cisco.message_id == '338005'"
field: "message"
pattern: "Dynamic %{}ilter %{event.outcome} black%{}d %{network.transport} traffic from %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} (%{_temp_.cisco.mapped_source_ip}/%{_temp_.cisco.mapped_source_port}) to %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} (%{_temp_.cisco.mapped_destination_ip}/%{_temp_.cisco.mapped_destination_port})%{}source %{} resolved from %{_temp_.cisco.list_id} list: %{source.domain}, threat-level: %{_temp_.cisco.threat_level}, category: %{_temp_.cisco.threat_category}"
- set:
if: "ctx._temp_.cisco.message_id == '338005'"
field: "server.domain"
value: "{{source.domain}}"
- dissect:
if: "ctx._temp_.cisco.message_id == '338006'"
field: "message"
pattern: "Dynamic %{}ilter %{event.outcome} black%{}d %{network.transport} traffic from %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} (%{_temp_.cisco.mapped_source_ip}/%{_temp_.cisco.mapped_source_port}) to %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} (%{_temp_.cisco.mapped_destination_ip}/%{_temp_.cisco.mapped_destination_port})%{}destination %{} resolved from %{_temp_.cisco.list_id} list: %{destination.domain}, threat-level: %{_temp_.cisco.threat_level}, category: %{_temp_.cisco.threat_category}"
- set:
if: "ctx._temp_.cisco.message_id == '338006'"
field: "server.domain"
value: "{{destination.domain}}"
- dissect:
if: "ctx._temp_.cisco.message_id == '338007'"
field: "message"
pattern: "Dynamic %{}ilter %{event.outcome} black%{}d %{network.transport} traffic from %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} (%{_temp_.cisco.mapped_source_ip}/%{_temp_.cisco.mapped_source_port}) to %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} (%{_temp_.cisco.mapped_destination_ip}/%{_temp_.cisco.mapped_destination_port})%{}source %{} resolved from %{_temp_.cisco.list_id} list: %{}, threat-level: %{_temp_.cisco.threat_level}, category: %{_temp_.cisco.threat_category}"
- dissect:
if: "ctx._temp_.cisco.message_id == '338008'"
field: "message"
pattern: "Dynamic %{}ilter %{event.outcome} black%{}d %{network.transport} traffic from %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} (%{_temp_.cisco.mapped_source_ip}/%{_temp_.cisco.mapped_source_port}) to %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} (%{_temp_.cisco.mapped_destination_ip}/%{_temp_.cisco.mapped_destination_port})%{}destination %{} resolved from %{_temp_.cisco.list_id} list: %{}, threat-level: %{_temp_.cisco.threat_level}, category: %{_temp_.cisco.threat_category}"
- dissect:
if: "ctx._temp_.cisco.message_id == '338101'"
field: "message"
pattern: "Dynamic %{}ilter %{event.outcome} white%{}d %{network.transport} traffic from %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} (%{_temp_.cisco.mapped_source_ip}/%{_temp_.cisco.mapped_source_port}) to %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} (%{_temp_.cisco.mapped_destination_ip}/%{_temp_.cisco.mapped_destination_port})%{}source %{} resolved from %{_temp_.cisco.list_id} list: %{source.domain}"
- set:
if: "ctx._temp_.cisco.message_id == '338101'"
field: "server.domain"
value: "{{source.domain}}"
- dissect:
if: "ctx._temp_.cisco.message_id == '338102'"
field: "message"
pattern: "Dynamic %{}ilter %{event.outcome} white%{}d %{network.transport} traffic from %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} (%{_temp_.cisco.mapped_source_ip}/%{_temp_.cisco.mapped_source_port}) to %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} (%{_temp_.cisco.mapped_destination_ip}/%{_temp_.cisco.mapped_destination_port})%{}destination %{} resolved from %{_temp_.cisco.list_id} list: %{destination.domain}"
- set:
if: "ctx._temp_.cisco.message_id == '338102'"
field: "server.domain"
value: "{{destination.domain}}"
- dissect:
if: "ctx._temp_.cisco.message_id == '338103'"
field: "message"
pattern: "Dynamic %{}ilter %{event.outcome} white%{}d %{network.transport} traffic from %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} (%{_temp_.cisco.mapped_source_ip}/%{_temp_.cisco.mapped_source_port}) to %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} (%{_temp_.cisco.mapped_destination_ip}/%{_temp_.cisco.mapped_destination_port})%{}source %{} resolved from %{_temp_.cisco.list_id} list: %{}"
- dissect:
if: "ctx._temp_.cisco.message_id == '338104'"
field: "message"
pattern: "Dynamic %{}ilter %{event.outcome} white%{}d %{network.transport} traffic from %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} (%{_temp_.cisco.mapped_source_ip}/%{_temp_.cisco.mapped_source_port}) to %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} (%{_temp_.cisco.mapped_destination_ip}/%{_temp_.cisco.mapped_destination_port})%{}destination %{} resolved from %{_temp_.cisco.list_id} list: %{}"
- dissect:
if: "ctx._temp_.cisco.message_id == '338201'"
field: "message"
pattern: "Dynamic %{}ilter %{event.outcome} grey%{}d %{network.transport} traffic from %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} (%{_temp_.cisco.mapped_source_ip}/%{_temp_.cisco.mapped_source_port}) to %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} (%{_temp_.cisco.mapped_destination_ip}/%{_temp_.cisco.mapped_destination_port})%{}source %{} resolved from %{_temp_.cisco.list_id} list: %{source.domain}, threat-level: %{_temp_.cisco.threat_level}, category: %{_temp_.cisco.threat_category}"
- set:
if: "ctx._temp_.cisco.message_id == '338201'"
field: "server.domain"
value: "{{source.domain}}"
- dissect:
if: "ctx._temp_.cisco.message_id == '338202'"
field: "message"
pattern: "Dynamic %{}ilter %{event.outcome} grey%{}d %{network.transport} traffic from %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} (%{_temp_.cisco.mapped_source_ip}/%{_temp_.cisco.mapped_source_port}) to %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} (%{_temp_.cisco.mapped_destination_ip}/%{_temp_.cisco.mapped_destination_port})%{}destination %{} resolved from %{_temp_.cisco.list_id} list: %{destination.domain}, threat-level: %{_temp_.cisco.threat_level}, category: %{_temp_.cisco.threat_category}"
- set:
if: "ctx._temp_.cisco.message_id == '338202'"
field: "server.domain"
value: "{{destination.domain}}"
- dissect:
if: "ctx._temp_.cisco.message_id == '338203'"
field: "message"
pattern: "Dynamic %{}ilter %{event.outcome} grey%{}d %{network.transport} traffic from %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} (%{_temp_.cisco.mapped_source_ip}/%{_temp_.cisco.mapped_source_port}) to %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} (%{_temp_.cisco.mapped_destination_ip}/%{_temp_.cisco.mapped_destination_port})%{}source %{} resolved from %{_temp_.cisco.list_id} list: %{source.domain}, threat-level: %{_temp_.cisco.threat_level}, category: %{_temp_.cisco.threat_category}"
- set:
if: "ctx._temp_.cisco.message_id == '338203'"
field: "server.domain"
value: "{{source.domain}}"
- dissect:
if: "ctx._temp_.cisco.message_id == '338204'"
field: "message"
pattern: "Dynamic %{}ilter %{event.outcome} grey%{}d %{network.transport} traffic from %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} (%{_temp_.cisco.mapped_source_ip}/%{_temp_.cisco.mapped_source_port}) to %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port} (%{_temp_.cisco.mapped_destination_ip}/%{_temp_.cisco.mapped_destination_port})%{}destination %{} resolved from %{_temp_.cisco.list_id} list: %{destination.domain}, threat-level: %{_temp_.cisco.threat_level}, category: %{_temp_.cisco.threat_category}"
- set:
if: "ctx._temp_.cisco.message_id == '338204'"
field: "server.domain"
value: "{{destination.domain}}"
- dissect:
if: "ctx._temp_.cisco.message_id == '338301'"
field: "message"
pattern: "Intercepted DNS reply for domain %{source.domain} from %{_temp_.cisco.source_interface}:%{source.address}/%{source.port} to %{_temp_.cisco.destination_interface}:%{destination.address}/%{destination.port}, matched %{_temp_.cisco.list_id}"
- set:
if: "ctx._temp_.cisco.message_id == '338301'"
field: "client.address"
value: "{{destination.address}}"
- set:
if: "ctx._temp_.cisco.message_id == '338301'"
field: "client.port"
value: "{{destination.port}}"
- set:
if: "ctx._temp_.cisco.message_id == '338301'"
field: "server.address"
value: "{{source.address}}"
- set:
if: "ctx._temp_.cisco.message_id == '338301'"
field: "server.port"
value: "{{source.port}}"
#
# Handle 302xxx messages (Flow expiration a.k.a "Teardown")
#
- set:
if: "[\"302014\", \"302016\", \"302018\", \"302021\", \"302036\", \"302304\", \"302306\"].contains(ctx._temp_.cisco.message_id)"
field: "event.action"
value: "flow-expiration"
- grok:
field: "message"
if: "[\"302014\", \"302016\", \"302018\", \"302021\", \"302036\", \"302304\", \"302306\"].contains(ctx._temp_.cisco.message_id)"
patterns:
- "Teardown %{NOTSPACE:network.transport} (?:state-bypass )?connection %{NOTSPACE:_temp_.cisco.connection_id} (?:for|from) %{NOTCOLON:_temp_.cisco.source_interface}:%{DATA:source.address}/%{NUMBER:source.port:int} (?:%{NOTSPACE:_temp_.cisco.source_username} )?to %{NOTCOLON:_temp_.cisco.destination_interface}:%{DATA:destination.address}/%{NUMBER:destination.port:int} (?:%{NOTSPACE:_temp_.cisco.destination_username} )?(?:duration %{TIME:_temp_.duration_hms} bytes %{NUMBER:network.bytes:int})%{GREEDYDATA}"
- "Teardown %{NOTSPACE:network.transport} connection for faddr (?:%{NOTCOLON:_temp_.cisco.source_interface}:)?%{ECSDESTIPORHOST}/%{NUMBER} (?:%{NOTSPACE:_temp_.cisco.destination_username} )?gaddr (?:%{NOTCOLON}:)?%{MAPPEDSRC}/%{NUMBER} laddr (?:%{NOTCOLON:_temp_.cisco.source_interface}:)?%{ECSSOURCEIPORHOST}/%{NUMBER}(?: %{NOTSPACE:_temp_.cisco.source_username})?%{GREEDYDATA}"
pattern_definitions:
NOTCOLON: "[^:]*"
ECSSOURCEIPORHOST: "(?:%{IP:source.address}|%{HOSTNAME:source.domain})"
ECSDESTIPORHOST: "(?:%{IP:destination.address}|%{HOSTNAME:destination.domain})"
MAPPEDSRC: "(?:%{DATA:_temp_.cisco.mapped_source_ip}|%{HOSTNAME})"
#
# Decode FTD's Security Event Syslog Messages
#
# 43000x messages are security event syslog messages specific to FTD.
# Format is a comma-separated sequence of key: value pairs.
#
# The result of this decoding is saved as _temp_.orig_security.{Key}: {Value}
- kv:
if: '["430001", "430002", "430003", "430004", "430005", ""].contains(ctx._temp_.cisco.message_id)'
field: "message"
field_split: ","
value_split: ":"
target_field: "_temp_.orig_security"
trim_key: " "
trim_value: " "
ignore_failure: true
#
# Remove message.
#
# The field has been used as temporary buffer while decoding. The full message
# is kept log.original. Processors below can still add a message field, as some
# security events contain an explanatory Message field.
- remove:
field:
- message
ignore_missing: true
#
# Populate ECS fields from Security Events
#
# This script uses the key-value pairs from Security Events to populate
# the appropriate ECS fields.
#
# A single key can be mapped to multiple ECS fields, and more than one key can
# map to the same ECS field, which results in an array being created.
#
# This script performs an additional job:
#
# Before FTD version 6.3, the message_id was not included in Security Events.
# As this field encodes the kind of event (intrusion, connection, malware...)
# the script below will guess the right message_id from the keys present in
# the event.
#
# The reason for overloading this script with different behaviors is
# that this pipeline is already reaching the limit on script compilations.
#
#*******************************************************************************
# Code generated by go generate. DO NOT EDIT.
#*******************************************************************************
- script:
if: ctx._temp_?.orig_security != null
params:
ACPolicy:
target: ac_policy
id: ["430001", "430002", "430003"]
ecs: [_temp_.cisco.rule_name]
AccessControlRuleAction:
target: access_control_rule_action
id: ["430002", "430003"]
ecs: [event.outcome]
AccessControlRuleName:
target: access_control_rule_name
id: ["430002", "430003"]
ecs: [_temp_.cisco.rule_name]
AccessControlRuleReason:
target: access_control_rule_reason
id: ["430002", "430003"]
ApplicationProtocol:
target: application_protocol
ecs: [network.protocol]
ArchiveDepth:
target: archive_depth
id: ["430004", "430005"]
ArchiveFileName:
target: archive_file_name
id: ["430004", "430005"]
ecs: [file.name]
ArchiveFileStatus:
target: archive_file_status
id: ["430004", "430005"]
ArchiveSHA256:
target: archive_sha256
id: ["430004", "430005"]
ecs: [file.hash.sha256]
Classification:
target: classification
id: ["430001"]
Client:
target: client
ecs: [network.application]
ClientVersion:
target: client_version
id: ["430002", "430003"]
ConnectionDuration:
target: connection_duration
id: ["430003"]
ecs: [event.duration]
DNS_Sinkhole:
target: dns_sinkhole
id: ["430002", "430003"]
DNS_TTL:
target: dns_ttl
id: ["430002", "430003"]
DNSQuery:
target: dns_query
id: ["430002", "430003"]
ecs: [dns.question.name]
DNSRecordType:
target: dns_record_type
id: ["430002", "430003"]
ecs: [dns.question.type]
DNSResponseType:
target: dns_response_type
id: ["430002", "430003"]
ecs: [dns.response_code]
DNSSICategory:
target: dnssi_category
id: ["430002", "430003"]
DstIP:
target: dst_ip
ecs: [destination.address]
DstPort:
target: dst_port
ecs: [destination.port]
EgressInterface:
target: egress_interface
id: ["430001", "430002", "430003"]
ecs: [_temp_.cisco.destination_interface]
EgressZone:
target: egress_zone
id: ["430001", "430002", "430003"]
Endpoint Profile:
target: endpoint_profile
id: ["430002", "430003"]
FileAction:
target: file_action
id: ["430004", "430005"]
FileCount:
target: file_count
id: ["430002", "430003"]
FileDirection:
target: file_direction
id: ["430004", "430005"]
FileName:
target: file_name
id: ["430004", "430005"]
ecs: [file.name]
FilePolicy:
target: file_policy
id: ["430004", "430005"]
ecs: [_temp_.cisco.rule_name]
FileSHA256:
target: file_sha256
id: ["430004", "430005"]
ecs: [file.hash.sha256]
FileSandboxStatus:
target: file_sandbox_status
id: ["430004", "430005"]
FileSize:
target: file_size
id: ["430004", "430005"]
ecs: [file.size]
FileStorageStatus:
target: file_storage_status
id: ["430004", "430005"]
FileType:
target: file_type
id: ["430004", "430005"]
FirstPacketSecond:
target: first_packet_second
id: ["430004", "430005"]
ecs: [event.start]
GID:
target: gid
id: ["430001"]
ecs: [service.id]
HTTPReferer:
target: http_referer
id: ["430002", "430003"]
ecs: [http.request.referrer]
HTTPResponse:
target: http_response
id: ["430001", "430002", "430003"]
ecs: [http.response.status_code]
ICMPCode:
target: icmp_code
id: ["430001", "430002", "430003"]
ICMPType:
target: icmp_type
id: ["430001", "430002", "430003"]
IPReputationSICategory:
target: ip_reputation_si_category
id: ["430002", "430003"]
IPSCount:
target: ips_count
id: ["430002", "430003"]
IngressInterface:
target: ingress_interface
id: ["430001", "430002", "430003"]
ecs: [_temp_.cisco.source_interface]
IngressZone:
target: ingress_zone
id: ["430001", "430002", "430003"]
InitiatorBytes:
target: initiator_bytes
id: ["430003"]
ecs: [source.bytes]
InitiatorPackets:
target: initiator_packets
id: ["430003"]
ecs: [source.packets]
InlineResult:
target: inline_result
id: ["430001"]
ecs: [event.outcome]
IntrusionPolicy:
target: intrusion_policy
id: ["430001"]
ecs: [_temp_.cisco.rule_name]
MPLS_Label:
target: mpls_label
id: ["430001"]
Message:
target: message
id: ["430001"]
ecs: [message]
NAPPolicy:
target: nap_policy
id: ["430001", "430002", "430003"]
NetBIOSDomain:
target: net_bios_domain
id: ["430002", "430003"]
ecs: [host.hostname]
NumIOC:
target: num_ioc
id: ["430001"]
Prefilter Policy:
target: prefilter_policy
id: ["430002", "430003"]
Priority:
target: priority
id: ["430001"]
Protocol:
target: protocol
ecs: [network.transport]
ReferencedHost:
target: referenced_host
id: ["430002", "430003"]
ecs: [url.domain]
ResponderBytes:
target: responder_bytes
id: ["430003"]
ecs: [destination.bytes]
ResponderPackets:
target: responder_packets
id: ["430003"]
ecs: [destination.packets]
Revision:
target: revision
id: ["430001"]
SHA_Disposition:
target: sha_disposition
id: ["430004", "430005"]
SID:
target: sid
id: ["430001"]
SSLActualAction:
target: ssl_actual_action
ecs: [event.outcome]
SSLCertificate:
target: ssl_certificate
id: ["430002", "430003", "430004", "430005"]
SSLExpectedAction:
target: ssl_expected_action
id: ["430002", "430003"]
SSLFlowStatus:
target: ssl_flow_status
id: ["430002", "430003", "430004", "430005"]
SSLPolicy:
target: ssl_policy
id: ["430002", "430003"]
SSLRuleName:
target: ssl_rule_name
id: ["430002", "430003"]
SSLServerCertStatus:
target: ssl_server_cert_status
id: ["430002", "430003"]
SSLServerName:
target: ssl_server_name
id: ["430002", "430003"]
ecs: [server.domain]
SSLSessionID:
target: ssl_session_id
id: ["430002", "430003"]
SSLTicketID:
target: ssl_ticket_id
id: ["430002", "430003"]
SSLURLCategory:
target: sslurl_category
id: ["430002", "430003"]
SSLVersion:
target: ssl_version
id: ["430002", "430003"]
SSSLCipherSuite:
target: sssl_cipher_suite
id: ["430002", "430003"]
SecIntMatchingIP:
target: sec_int_matching_ip
id: ["430002", "430003"]
Security Group:
target: security_group
id: ["430002", "430003"]
SperoDisposition:
target: spero_disposition
id: ["430004", "430005"]
SrcIP:
target: src_ip
ecs: [source.address]
SrcPort:
target: src_port
ecs: [source.port]
TCPFlags:
target: tcp_flags
id: ["430002", "430003"]
ThreatName:
target: threat_name
id: ["430005"]
ecs: [_temp_.cisco.threat_category]
ThreatScore:
target: threat_score
id: ["430005"]
ecs: [_temp_.cisco.threat_level]
Tunnel or Prefilter Rule:
target: tunnel_or_prefilter_rule
id: ["430002", "430003"]
URI:
target: uri
id: ["430004", "430005"]
ecs: [url.original]
URL:
target: url
id: ["430002", "430003"]
ecs: [url.original]
URLCategory:
target: url_category
id: ["430002", "430003"]
URLReputation:
target: url_reputation
id: ["430002", "430003"]
URLSICategory:
target: urlsi_category
id: ["430002", "430003"]
User:
target: user
ecs: [user.id, user.name]
UserAgent:
target: user_agent
id: ["430002", "430003"]
ecs: [user_agent.original]
VLAN_ID:
target: vlan_id
id: ["430001", "430002", "430003"]
WebApplication:
target: web_application
ecs: [network.application]
originalClientSrcIP:
target: original_client_src_ip
id: ["430002", "430003"]
ecs: [client.address]
lang: painless
source: |
boolean isEmpty(def value) {
return (value instanceof AbstractList? value.size() : value.length()) == 0;
}
def appendOrCreate(Map dest, String[] path, def value) {
for (int i=0; i<path.length-1; i++) {
dest = dest.computeIfAbsent(path[i], _ -> new HashMap());
}
String key = path[path.length - 1];
def existing = dest.get(key);
return existing == null?
dest.put(key, value)
: existing instanceof AbstractList?
existing.add(value)
: dest.put(key, new ArrayList([existing, value]));
}
def msg = ctx._temp_.orig_security;
def counters = new HashMap();
def dest = new HashMap();
ctx._temp_.cisco['security'] = dest;
for (entry in msg.entrySet()) {
def param = params.get(entry.getKey());
if (param == null) {
continue;
}
param.getOrDefault('id', []).forEach( id -> counters[id] = 1 + counters.getOrDefault(id, 0) );
if (!isEmpty(entry.getValue())) {
param.getOrDefault('ecs', []).forEach( field -> appendOrCreate(ctx, field.splitOnToken('.'), entry.getValue()) );
dest[param.target] = entry.getValue();
}
}
if (ctx._temp_.cisco.message_id != "") return;
def best;
for (entry in counters.entrySet()) {
if (best == null || best.getValue() < entry.getValue()) best = entry;
}
if (best != null) ctx._temp_.cisco.message_id = best.getKey();
#*******************************************************************************
# End of generated code.
#*******************************************************************************
#
# Normalize ECS field values
#
- script:
lang: painless
params:
'ctx._temp_.cisco.message_id':
target: event.action
map:
'430001': intrusion-detected
'430002': connection-started
'430003': connection-finished
'430004': file-detected
'430005': malware-detected
'dns.question.type':
map:
'a host address': A
'ip6 address': AAAA
'text strings': TXT
'a domain name pointer': PTR
'an authoritative name server': NS
'the canonical name for an alias': CNAME
'marks the start of a zone of authority': SOA
'mail exchange': MX
'server selection': SRV
'dns.response_code':
map:
'non-existent domain': NXDOMAIN
'server failure': SERVFAIL
'query refused': REFUSED
'no error': NOERROR
source: |
def getField(Map src, String[] path) {
for (int i=0; i<path.length-1; i++) {
src = src.getOrDefault(path[i], null);
if (src == null || !(src instanceof Map)) {
return null;
}
}
return src[path[path.length-1]];
}
def setField(Map dest, String[] path, def value) {
for (int i=0; i<path.length-1; i++) {
dest = dest.computeIfAbsent(path[i], _ -> new HashMap());
}
dest[path[path.length-1]] = value;
}
for (entry in params.entrySet()) {
def srcField = entry.getKey();
def param = entry.getValue();
String oldVal = getField(ctx, srcField.splitOnToken('.'));
if (oldVal == null) continue;
def newVal = param.map?.getOrDefault(oldVal.toLowerCase(), null);
if (newVal != null) {
def dstField = param.getOrDefault('target', srcField);
setField(ctx, dstField.splitOnToken('.'), newVal);
}
}
- set:
if: 'ctx.dns?.question?.type != null && ctx.dns?.response_code == null'
field: dns.response_code
value: NOERROR
- set:
if: 'ctx._temp_.cisco.message_id == "430001"'
field: event.action
value: intrusion-detected
- set:
if: 'ctx._temp_.cisco.message_id == "430002"'
field: event.action
value: connection-started
- set:
if: 'ctx._temp_.cisco.message_id == "430003"'
field: event.action
value: connection-finished
- set:
if: 'ctx._temp_.cisco.message_id == "430004"'
field: event.action
value: file-detected
- set:
if: 'ctx._temp_.cisco.message_id == "430005"'
field: event.action
value: malware-detected
#
# Handle event.duration
#
# It can be set from ConnectionDuration FTD field above. This field holds
# seconds as a string. Copy it to _temp_.duration_hms so that the following
# processor converts it to the right value and populates start and end.
- set:
field: '_temp_.duration_hms'
value: '{{event.duration}}'
if: 'ctx.event?.duration != null'
#
# Process the flow duration "hh:mm:ss" present in some messages
# This will fill event.start, event.end and event.duration
#
- script:
lang: painless
if: "ctx?._temp_?.duration_hms != null"
source: >
long parse_hms(String s) {
long cur = 0, total = 0;
for (char c: s.toCharArray()) {
if (c >= (char)'0' && c <= (char)'9') {
cur = (cur*10) + (long)c - (char)'0';
} else if (c == (char)':') {
total = (total + cur) * 60;
cur = 0;
} else {
return 0;
}
}
return total + cur;
}
if (ctx?.event == null) {
ctx['event'] = new HashMap();
}
String end = ctx['@timestamp'];
ctx.event['end'] = end;
long nanos = parse_hms(ctx._temp_.duration_hms) * 1000000000L;
ctx.event['duration'] = nanos;
ctx.event['start'] = ZonedDateTime.ofInstant(
Instant.parse(end).minusNanos(nanos),
ZoneOffset.UTC);
#
# Normalize protocol names
#
- lowercase:
field: "network.transport"
ignore_failure: true
- lowercase:
field: "network.protocol"
ignore_failure: true
- lowercase:
field: "network.application"
ignore_failure: true
- lowercase:
field: "file.type"
ignore_failure: true
- lowercase:
field: "network.direction"
ignore_failure: true
#
# Populate network.iana_number from network.transport. Also does reverse
# mapping in case network.transport contains the iana_number.
#
- script:
if: 'ctx?.network?.transport != null'
lang: painless
params:
icmp: 1
igmp: 2
ipv4: 4
tcp: 6
egp: 8
igp: 9