Predefined correlation handlers

FortiAnalyzer includes some predefined correlation event handlers that you can use to generate events.

If you wish to recieve notifications from a pedefined correlation handler, configure a notification profile and assign it to the correlation handler. See Creating notification profiles.

To view predefined event handlers in the FortiAnalyzer GUI, go to Incidents & Events > Handlers > Correlation Handlers. From the More dropdown, select Show Predefined. Predefined correlation handlers are named according to their use case. For example, there are predefined correlaton handlers for:

CnC (Command and Control)
Credential Access
Defense Evasion
Execution
Exfiltration
Initial Access
Lateral Movement
Persistence
Privilege

The following are a small sample of FortiAnalyzer predefined correlation handlers.

Correlation Handler

Description

CnC - Default-Suspicious-Traffic-From-Infected-Endpoint

This handler is to detect if an endpoint is infected and there is a large traffic from the same endpoint.

Disabled by default

Event Severity: Medium

Tags: CnC

Threshold Duration: 30 minutes

Correlation Sequence:

Logic Group 1

Traffic to Botnet CnC detected or blocked in virus log
Log Device Type	FortiGate
Log Type	Antivirus
Log Field	Source Endpoint
Log messages that match any of the following conditions:	Log ID Equal To 0202009248 Log ID Equal To 0202009249
Trigger an event when:	A group contains `1` or more log occurences

Traffic to CnC detected
Log Device Type	FortiGate
Log Type	Traffic Log > Any
Log Field	Source Endpoint
Log messages that match any of the following conditions:	tdtype~infected
Trigger an event when:	A group contains `1` or more log occurences

Web traffic to CnC detected
Log Device Type	FortiGate
Log Type	Web Filter
Log Field	Source Endpoint
Log messages that match any of the following conditions:	tdtype~infected
Trigger an event when:	A group contains `1` or more log occurences

DNS traffic to CnC detected
Log Device Type	FortiGate
Log Type	DNS Log
Log Field	Source Endpoint
Log messages that match any of the following conditions:	tdtype~infected
Trigger an event when:	A group contains `1` or more log occurences

FOLLOWED_BY, within 15m

Logic Group 2

Traffic from endpoint
Log Device Type	FortiGate
Log Type	Traffic Log > Any
Log Field	Source Endpoint
Log messages that match any of the following conditions:
Trigger an event when:	The sum of `sentbyte` is greater than or equal to `100 Mega Byte`

Correlation Criteria:

Traffic to Botnet CnC detected or blocked in virus log endpoint = Traffic to CnC detected endpoint
Traffic to CnC detected endpoint = Web traffic to CnC detected endpoint
Web traffic to CnC detected endpoint = DNS traffic to CnC detected endpoint
DNS traffic to CnC detected endpoint = Traffic from endpoint endpoint

Credential Access - Default-Brute-Force-Account-Login-Attack-FAZ

This handler is to detect if an account login failed many times not followed by a login success for FortiAnalyzer.

Disabled by default

Event Severity: Medium

Tags: login, attack

Threshold Duration: 30 minutes

Correlation Sequence:

Login Failed 5 Times
Log Device Type	FortiAnalyzer
Log Type	Event Log
Log Field	Device ID
Log messages that match any of the following conditions:	Operation Equal To login failed
Trigger an event when:	A group contains `5` or more log occurences

NOT_FOLLOWED_BY, within 5m

Login Success
Log Device Type	FortiAnalyzer
Log Type	Event Log
Log Field	Device ID
Log messages that match any of the following conditions:	Operation Equal To login
Trigger an event when:	A group contains `1` or more log occurences

Correlation Criteria:

Login Failed 5 Times devid = Login Success devid

Credential Access - Default-Brute-Force-Account-Login-Attack-FGT

This handler is to detect if an account login failed many times not followed by a login success for FortiGate.

Disabled by default

Event Severity: Medium

Tags: login, attack

Threshold Duration: 30 minutes

Correlation Sequence:

Login Failed 5 Times
Log Device Type	FortiGate
Log Type	Event Log > System
Log Field	Device ID
Log messages that match any of the following conditions:	Log ID Equal To 0100032002
Trigger an event when:	A group contains `5` or more log occurences

NOT_FOLLOWED_BY, within 5m

Login-Success
Log Device Type	FortiGate
Log Type	Event Log > System
Log Field	Device ID
Log messages that match any of the following conditions:	Log ID Equal To 0100032001
Trigger an event when:	A group contains `1` or more log occurences

Correlation Criteria:

Login Failed 5 Times devid = Login-Success devid

Predefined correlation handlers

FortiAnalyzer includes some predefined correlation event handlers that you can use to generate events.

If you wish to recieve notifications from a pedefined correlation handler, configure a notification profile and assign it to the correlation handler. See Creating notification profiles.

CnC (Command and Control)
Credential Access
Defense Evasion
Execution
Exfiltration
Initial Access
Lateral Movement
Persistence
Privilege

The following are a small sample of FortiAnalyzer predefined correlation handlers.

Correlation Handler

Description

CnC - Default-Suspicious-Traffic-From-Infected-Endpoint

This handler is to detect if an endpoint is infected and there is a large traffic from the same endpoint.

Disabled by default

Event Severity: Medium

Tags: CnC

Threshold Duration: 30 minutes

Correlation Sequence:

Logic Group 1

Traffic to Botnet CnC detected or blocked in virus log
Log Device Type	FortiGate
Log Type	Antivirus
Log Field	Source Endpoint
Log messages that match any of the following conditions:	Log ID Equal To 0202009248 Log ID Equal To 0202009249
Trigger an event when:	A group contains `1` or more log occurences

Traffic to CnC detected
Log Device Type	FortiGate
Log Type	Traffic Log > Any
Log Field	Source Endpoint
Log messages that match any of the following conditions:	tdtype~infected
Trigger an event when:	A group contains `1` or more log occurences

Web traffic to CnC detected
Log Device Type	FortiGate
Log Type	Web Filter
Log Field	Source Endpoint
Log messages that match any of the following conditions:	tdtype~infected
Trigger an event when:	A group contains `1` or more log occurences

DNS traffic to CnC detected
Log Device Type	FortiGate
Log Type	DNS Log
Log Field	Source Endpoint
Log messages that match any of the following conditions:	tdtype~infected
Trigger an event when:	A group contains `1` or more log occurences

FOLLOWED_BY, within 15m

Logic Group 2

Traffic from endpoint
Log Device Type	FortiGate
Log Type	Traffic Log > Any
Log Field	Source Endpoint
Log messages that match any of the following conditions:
Trigger an event when:	The sum of `sentbyte` is greater than or equal to `100 Mega Byte`

Correlation Criteria:

Traffic to Botnet CnC detected or blocked in virus log endpoint = Traffic to CnC detected endpoint
Traffic to CnC detected endpoint = Web traffic to CnC detected endpoint
Web traffic to CnC detected endpoint = DNS traffic to CnC detected endpoint
DNS traffic to CnC detected endpoint = Traffic from endpoint endpoint

Credential Access - Default-Brute-Force-Account-Login-Attack-FAZ

This handler is to detect if an account login failed many times not followed by a login success for FortiAnalyzer.

Disabled by default

Event Severity: Medium

Tags: login, attack

Threshold Duration: 30 minutes

Correlation Sequence:

Login Failed 5 Times
Log Device Type	FortiAnalyzer
Log Type	Event Log
Log Field	Device ID
Log messages that match any of the following conditions:	Operation Equal To login failed
Trigger an event when:	A group contains `5` or more log occurences

NOT_FOLLOWED_BY, within 5m

Login Success
Log Device Type	FortiAnalyzer
Log Type	Event Log
Log Field	Device ID
Log messages that match any of the following conditions:	Operation Equal To login
Trigger an event when:	A group contains `1` or more log occurences

Correlation Criteria:

Login Failed 5 Times devid = Login Success devid

Credential Access - Default-Brute-Force-Account-Login-Attack-FGT

This handler is to detect if an account login failed many times not followed by a login success for FortiGate.

Disabled by default

Event Severity: Medium

Tags: login, attack

Threshold Duration: 30 minutes

Correlation Sequence:

Login Failed 5 Times
Log Device Type	FortiGate
Log Type	Event Log > System
Log Field	Device ID
Log messages that match any of the following conditions:	Log ID Equal To 0100032002
Trigger an event when:	A group contains `5` or more log occurences

NOT_FOLLOWED_BY, within 5m

Login-Success
Log Device Type	FortiGate
Log Type	Event Log > System
Log Field	Device ID
Log messages that match any of the following conditions:	Log ID Equal To 0100032001
Trigger an event when:	A group contains `1` or more log occurences

Correlation Criteria:

Login Failed 5 Times devid = Login-Success devid

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Predefined correlation handlers