Large Worker Input SVN Queue

Rule ID

PH_Rule_Avail_PH_20

Default Status

Enabled

Description

Detects that Worker input SVN queue is very large (greater than 100MB). This indicates that the workers are falling behind in handling SVN files from collectors or from the parser modules. Check the SVN installation.

Severity

MITRE ATT&CK® Tactics

FortiSIEM

MITRE ATT&CK® Techniques

No Technique Specified

Impacts

Internal

Data Source

FortiSIEM Self Monitoring

Detection

Correlation

Remediation Guidance

See if any FortiSIEM process is taking up excessive CPU/memory resources on Worker nodes. Consider adding more workers and/or adding resources to workers. Make sure there are no bottlenecks in storage insertion.

Time Window

If the following pattern or patterns match an ingested event within the given time window in seconds, trigger an incident.

600 seconds

Trigger Conditions

If the following defined pattern/s occur within a 600 second time window.

AOLargeSVNQueue

SubPattern Definitions

SubPattern Name: AOLargeSVNQueue

This is the named definition of the event query, this is important if multiple subpatterns are defined to distinguish them.

SubPattern Query

This is the query logic that matches incoming events

eventType = "PH_EVT_HANDLER_SVN_QUEUE_WARNING"

Group by Attributes

This defines how matching events are aggregated, only events with the same matching attribute values are grouped into one unique incident ID

hostName

Aggregate Constraint

This is most typically a numerical constraint that defines when the rule should trigger an incident

COUNT (*) >= 1 AND AVG(totBytes64) > 104857600

Incident Attribute Mapping

This section defines which fields in matching raw events should be mapped to the incident attributes in the resulting incident.

The available raw event attributes to map are limited to the group by attributes and the aggregate event constraint fields for each subpattern

 hostName = AOLargeSVNQueue.hostName,
 totBytes64 = AOLargeSVNQueue.AVG(totBytes64)

FortiSIEM Rules