Collect Cisco Email Security logs

Supported in:

Google secops SIEM

Note: This feature is covered by Pre-GA Offerings Terms of the Google Security Operations Service Specific Terms. Pre-GA features might have limited support, and changes to pre-GA features might not be compatible with other pre-GA versions. For more information, see the Google SecOps Technical Support Service guidelines and the Google SecOps Service Specific Terms.

This document explains how to ingest Cisco Email Security logs to Google Security Operations using Bindplane.

The parser extracts fields from Cisco Email Security Appliance syslog, key-value, and JSON formatted logs. It uses grok and/or kv to parse the log message and then maps these values to the Unified Data Model (UDM). It also sets default metadata values for the event source and type.

Before you begin

Make sure you have the following prerequisites:

• A Google SecOps instance
• Windows Server 2016 or later, or Linux host with systemd
• If running behind a proxy, ensure firewall ports are open per the Bindplane agent requirements
• Privileged access to the Cisco Email Security Appliance web interface

Get Google SecOps ingestion authentication file

1. Sign in to the Google SecOps console.
2. Go to SIEM Settings > Collection Agents.
3. Download the Ingestion Authentication File. Save the file securely on the system where Bindplane will be installed.

Note: This JSON file contains credentials for authenticating the Bindplane agent to Google SecOps.

Get Google SecOps customer ID

1. Sign in to the Google SecOps console.
2. Go to SIEM Settings > Profile.
3. Copy and save the Customer ID from the Organization Details section.

Note: The customer ID is required for configuring the Bindplane agent exporter.

Install the Bindplane agent

Install the Bindplane agent on your Windows or Linux operating system according to the following instructions.

Windows installation

1. Open Command Prompt or PowerShell as an administrator.

2. Run the following command:

   msiexec /i "https://github.com/observIQ/bindplane-agent/releases/latest/download/observiq-otel-collector.msi" /quiet
   

3. Wait for the installation to complete.

4. Verify the installation by running:

   sc query observiq-otel-collector
   

The service should show as RUNNING.

Linux installation

1. Open a terminal with root or sudo privileges.

2. Run the following command:

   sudo sh -c "$(curl -fsSlL https://github.com/observiq/bindplane-agent/releases/latest/download/install_unix.sh)" install_unix.sh
   

3. Wait for the installation to complete.

4. Verify the installation by running:

   sudo systemctl status observiq-otel-collector
   

The service should show as active (running).

Additional installation resources

For additional installation options and troubleshooting, see Bindplane agent installation guide.

Configure Bindplane agent to ingest syslog and send to Google SecOps

Locate the configuration file

• Linux:

  sudo nano /etc/bindplane-agent/config.yaml
  

• Windows:

  notepad "C:\Program Files\observIQ OpenTelemetry Collector\config.yaml"
  

Edit the configuration file

• Replace the entire contents of config.yaml with the following configuration:

  receivers:
      tcplog:
          listen_address: "0.0.0.0:514"
  
  exporters:
      chronicle/chronicle_w_labels:
          compression: gzip
          creds_file_path: '/path/to/ingestion-authentication-file.json'
          customer_id: 'YOUR_CUSTOMER_ID'
          endpoint: malachiteingestion-pa.googleapis.com
          log_type: 'CISCO_EMAIL_SECURITY'
          raw_log_field: body
          ingestion_labels:
  
  service:
      pipelines:
          logs/source0__chronicle_w_labels-0:
              receivers:
                  - tcplog
              exporters:
                  - chronicle/chronicle_w_labels
  

Configuration parameters

• Replace the following placeholders:

  • Receiver configuration:

    • tcplog: Use udplog for UDP syslog or tcplog for TCP syslog
    • 0.0.0.0: IP address to listen on (0.0.0.0 to listen on all interfaces)
    • 514: Port number to listen on (standard syslog port)

  • Exporter configuration:

    • creds_file_path: Full path to ingestion authentication file:
      • Linux: /etc/bindplane-agent/ingestion-auth.json
      • Windows: C:\Program Files\observIQ OpenTelemetry Collector\ingestion-auth.json
    • YOUR_CUSTOMER_ID: Customer ID from the Get customer ID section
    • endpoint: Regional endpoint URL:
      • US: malachiteingestion-pa.googleapis.com
      • Europe: europe-malachiteingestion-pa.googleapis.com
      • Asia: asia-southeast1-malachiteingestion-pa.googleapis.com
      • See Regional Endpoints for complete list
    • log_type: Log type exactly as it appears in Chronicle (CISCO_EMAIL_SECURITY)

Save the configuration file

• After editing, save the file:
  • Linux: Press Ctrl+O, then Enter, then Ctrl+X
  • Windows: Click File > Save

Restart the Bindplane agent to apply the changes

• To restart the Bindplane agent in Linux, run the following command:

  sudo systemctl restart observiq-otel-collector
  

  1. Verify the service is running:

       sudo systemctl status observiq-otel-collector
     

  2. Check logs for errors:

       sudo journalctl -u observiq-otel-collector -f
     

• To restart the Bindplane agent in Windows, choose one of the following options:

  • Command Prompt or PowerShell as administrator:

    net stop observiq-otel-collector && net start observiq-otel-collector
    

  • Services console:

    1. Press Win+R, type services.msc, and press Enter.
    2. Locate observIQ OpenTelemetry Collector.

    3. Right-click and select Restart.

    4. Verify the service is running:

       sc query observiq-otel-collector
       

    5. Check logs for errors:

       type "C:\Program Files\observIQ OpenTelemetry Collector\log\collector.log"
       

Configure Syslog forwarding on Cisco Email Security Appliance

1. Sign in to the Cisco Email Security Appliance web interface.
2. Go to System Administration > Log Subscriptions.
3. Click Add Log Subscription.
4. Provide the following configuration details:
   • Log Type: Select the log type to forward (for example, Consolidated Event Logs, Mail Logs, Text Mail Logs).
   • Name: Enter a descriptive name (for example, Google-SecOps-Syslog).
   • Retrieval Method: Select Syslog Push.
   • Hostname: Enter the IP address of the Bindplane agent host.
   • Protocol: Select TCP.
   • Port: Enter 514.
   • Facility: Select LOG_MAIL (or your preferred facility).
5. Click Submit.
6. Repeat steps 3-5 for each additional log type to forward. Recommended log types:
   • Consolidated Event Logs
   • Text Mail Logs
   • Anti-Spam Logs
   • Antivirus Logs
   • AMP Engine Logs
   • Content Filter Logs
7. Click Commit Changes to apply the configuration.
8. Verify syslog messages are being sent by checking the Bindplane agent logs.

UDM mapping table

Log field	UDM mapping	Logic
acl_decision_tag	read_only_udm.security_result.detection_fields.value	Directly mapped if not empty, "-", or "NONE". Key is "ACL Decision Tag".
access_or_decryption_policy_group	read_only_udm.security_result.detection_fields.value	Directly mapped if not empty, "-", or "NONE". Key is "AccessOrDecryptionPolicyGroup".
act	read_only_udm.security_result.action_details	Directly mapped.
authenticated_user	read_only_udm.principal.user.userid	Directly mapped if not empty, "-", or "NONE".
cache_hierarchy_retrieval	read_only_udm.security_result.detection_fields.value	Directly mapped if not empty, "-", or "NONE". Key is "Cache Hierarchy Retrieval".
cipher	read_only_udm.network.tls.cipher	Directly mapped.
country	read_only_udm.principal.location.country_or_region	Directly mapped.
data_security_policy_group	read_only_udm.security_result.detection_fields.value	Directly mapped if not empty, "-", or "NONE". Key is "DataSecurityPolicyGroup".
description	read_only_udm.metadata.description	Directly mapped for syslog messages. For CEF messages, it becomes the overall product description. Various grok patterns extract specific descriptions based on the product_event. Some descriptions are modified by gsub to remove leading/trailing spaces and colons.
deviceDirection	read_only_udm.network.direction	If '0', maps to 'INBOUND'. If '1', maps to 'OUTBOUND'. Used to determine which TLS cipher and protocol to map directly and which to map as labels.
deviceExternalId	read_only_udm.principal.asset.asset_id	Mapped as "Device ID:".
domain	read_only_udm.target.administrative_domain	Directly mapped from JSON logs.
domain_age	read_only_udm.security_result.about.labels.value	Directly mapped. Key is "YoungestDomainAge".
duser	read_only_udm.target.user.email_addresses, read_only_udm.network.email.to	If contains ";", split into multiple email addresses and map each to both UDM fields. Otherwise, directly map to both UDM fields if a valid email address. Also used to populate network_to if it's empty.
dvc	read_only_udm.target.ip	Directly mapped.
entries.collection_time.nanos, entries.collection_time.seconds	read_only_udm.metadata.event_timestamp.nanos, read_only_udm.metadata.event_timestamp.seconds	Used to construct the event timestamp.
env-from	read_only_udm.additional.fields.value.string_value	Directly mapped. Key is "Env-From".
ESAAttachmentDetails	read_only_udm.security_result.about.file.full_path, read_only_udm.security_result.about.file.sha256	Parsed to extract file names and SHA256 hashes. Multiple files and hashes can be extracted.
ESADCID	read_only_udm.security_result.about.labels.value	Directly mapped. Key is "ESADCID".
ESAFriendlyFrom	read_only_udm.principal.user.user_display_name, read_only_udm.network.email.from	Parsed to extract the display name and email address.
ESAHeloDomain	read_only_udm.intermediary.administrative_domain	Directly mapped.
ESAHeloIP	read_only_udm.intermediary.ip	Directly mapped.
ESAICID	read_only_udm.security_result.about.labels.value	Directly mapped. Key is "ESAICID".
ESAMailFlowPolicy	read_only_udm.security_result.rule_name	Directly mapped.
ESAMID	read_only_udm.security_result.about.labels.value	Directly mapped. Key is "ESAMID".
ESAReplyTo	read_only_udm.network.email.reply_to	Directly mapped if a valid email address. Also used to populate network_to.
ESASDRDomainAge	read_only_udm.security_result.about.labels.value	Directly mapped. Key is "ESASDRDomainAge".
ESASenderGroup	read_only_udm.principal.group.group_display_name	Directly mapped.
ESAStatus	read_only_udm.security_result.about.labels.value	Directly mapped. Key is "ESAStatus".
ESATLSInCipher	read_only_udm.network.tls.cipher or read_only_udm.security_result.about.labels.value	Mapped directly to cipher if deviceDirection is '0'. Otherwise, mapped as a label with key "ESATLSInCipher".
ESATLSInProtocol	read_only_udm.network.tls.version or read_only_udm.security_result.about.labels.value	TLS version extracted and mapped directly if deviceDirection is '0'. Otherwise, mapped as a label with key "ESATLSInProtocol".
ESATLSOutCipher	read_only_udm.network.tls.cipher or read_only_udm.security_result.about.labels.value	Mapped directly to cipher if deviceDirection is '1'. Otherwise, mapped as a label with key "ESATLSOutCipher".
ESATLSOutProtocol	read_only_udm.network.tls.version or read_only_udm.security_result.about.labels.value	TLS version extracted and mapped directly if deviceDirection is '1'. Otherwise, mapped as a label with key "ESATLSOutProtocol".
ESAURLDetails	read_only_udm.target.url	Parsed to extract URLs. Only the first URL is mapped because the field is not repeated.
external_dlp_policy_group	read_only_udm.security_result.detection_fields.value	Directly mapped if not empty, "-", or "NONE". Key is "ExternalDlpPolicyGroup".
ExternalMsgID	read_only_udm.security_result.about.labels.value	Directly mapped after removing single quotes and angle brackets. Key is "ExternalMsgID".
from	read_only_udm.network.email.from	Directly mapped if a valid email address. Also used to populate network_from.
host.hostname	read_only_udm.principal.hostname or read_only_udm.intermediary.hostname	Mapped to principal hostname if host field is invalid. Also mapped to intermediary hostname.
host.ip	read_only_udm.principal.ip or read_only_udm.intermediary.ip	Mapped to principal IP if ip field is not set in JSON logs. Also mapped to intermediary IP.
hostname	read_only_udm.target.hostname	Directly mapped.
http_method	read_only_udm.network.http.method	Directly mapped.
http_response_code	read_only_udm.network.http.response_code	Directly mapped and converted to integer.
identity_policy_group	read_only_udm.security_result.detection_fields.value	Directly mapped if not empty, "-", or "NONE". Key is "IdentityPolicyGroup".
ip	read_only_udm.principal.ip	Directly mapped. Overwritten by source_ip if present.
kv_msg	Various	Parsed using kv filter. Pre-processing includes replacing spaces before keys with "#" and swapping csLabel values.
log_type	read_only_udm.metadata.log_type	Hardcoded to "CISCO_EMAIL_SECURITY".
loglevel	read_only_udm.security_result.severity, read_only_udm.security_result.action	Used to determine severity and action. "Info", "", "Debug", "Trace" map to "INFORMATIONAL" and "ALLOW". "Warning" maps to "MEDIUM" and "ALLOW". "High" maps to "HIGH" and "BLOCK". "Critical" and "Alert" map to "CRITICAL", "BLOCK".
mail_id	read_only_udm.network.email.mail_id	Directly mapped from JSON logs.
mailto	read_only_udm.target.user.email_addresses, read_only_udm.network.email.to	Directly mapped to both UDM fields if a valid email address.
MailPolicy	read_only_udm.security_result.about.labels.value	Directly mapped. Key is "MailPolicy".
message	Various	Parsed as JSON if possible. Otherwise, processed as a syslog message.
message_id	read_only_udm.network.email.mail_id	Directly mapped. Also used to populate network_data.
msg	read_only_udm.network.email.subject	Directly mapped after UTF-8 decoding and removing carriage returns, newlines, and extra quotes. Also used to populate network_data.
msg1	Various	Parsed using kv filter. Used to extract Hostname, helo, env-from, and reply-to.
outbound_malware_scanning_policy_group	read_only_udm.security_result.detection_fields.value	Directly mapped if not empty, "-", or "NONE". Key is "DataSecurityPolicyGroup".
port	read_only_udm.target.port	Directly mapped and converted to integer.
principalMail	read_only_udm.principal.user.email_addresses	Directly mapped.
principalUrl	read_only_udm.principal.url	Directly mapped.
product_event	read_only_udm.metadata.product_event_type	Directly mapped. Used to determine which grok patterns to apply. Leading "%" characters are removed. "amp" is replaced with "SIEM_AMPenginelogs".
product_version	read_only_udm.metadata.product_version	Directly mapped.
protocol	read_only_udm.network.tls.version	Directly mapped.
received_bytes	read_only_udm.network.received_bytes	Directly mapped and converted to unsigned integer.
reply-to	read_only_udm.additional.fields.value.string_value	Directly mapped. Key is "Reply-To".
reputation	read_only_udm.security_result.confidence_details	Directly mapped.
request_method_uri	read_only_udm.target.url	Directly mapped.
result_code	read_only_udm.security_result.detection_fields.value	Directly mapped. Key is "Result Code".
routing_policy_group	read_only_udm.security_result.detection_fields.value	Directly mapped if not empty, "-", or "NONE". Key is "RoutingPolicyGroup".
rule	read_only_udm.security_result.detection_fields.value	Directly mapped. Key is "Matched Condition".
SDRThreatCategory	read_only_udm.security_result.threat_name	Directly mapped if not empty or "N/A".
SenderCountry	read_only_udm.principal.location.country_or_region	Directly mapped.
senderGroup	read_only_udm.principal.group.group_display_name	Directly mapped.
security_description	read_only_udm.security_result.description	Directly mapped.
security_email	read_only_udm.security_result.about.email or read_only_udm.principal.hostname	Mapped to email if a valid email address. Otherwise, mapped to hostname after extracting with grok.
source	read_only_udm.network.ip_protocol	If contains "tcp", maps to "TCP".
sourceAddress	read_only_udm.principal.ip	Directly mapped.
sourceHostName	read_only_udm.principal.administrative_domain	Directly mapped if not "unknown".
source_ip	read_only_udm.principal.ip	Directly mapped. Overwrites ip if present.
Subject	read_only_udm.network.email.subject	Directly mapped after removing trailing periods. Also used to populate network_data.
suser	read_only_udm.principal.user.email_addresses, read_only_udm.network.email.bounce_address	Directly mapped to both UDM fields if a valid email address.
target_ip	read_only_udm.target.ip	Directly mapped.
to	read_only_udm.network.email.to	Directly mapped if a valid email address. Also used to populate network_to.
total_bytes	read_only_udm.network.sent_bytes	Directly mapped and converted to unsigned integer.
trackerHeader	read_only_udm.additional.fields.value.string_value	Directly mapped. Key is "Tracker Header".
ts, ts1, year	read_only_udm.metadata.event_timestamp.seconds	Used to construct the event timestamp. ts1 and year are combined if ts1 is present. Various formats are supported, with and without the year. If the year is not present, the current year is used. Hardcoded to "Cisco". Hardcoded to "Cisco Email Security". Defaults to "ALLOW". Set to "BLOCK" based on loglevel or description. Defaults to "INBOUND" if application_protocol is present. Set based on deviceDirection for CEF messages. Determined based on a combination of fields including network_from, network_to, target_ip, ip, description, event_type, principal_host, Hostname, user_id, and sourceAddress. Defaults to "GENERIC_EVENT". Set to "SMTP" if application_protocol is "SMTP" or "smtp", or if target_ip and ip are present. Set to "AUTHTYPE_UNSPECIFIED" if login_status and user_id are present in sshd logs. Set to true if loglevel is "Critical" or "Alert".

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