Possible contact with a domain generated by a DGA

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'Identifies contacts with domains names in CommonSecurityLog that might have been generated by a Domain Generation Algorithm (DGA). DGAs can be used by malware to generate rendezvous points that are difficult to predict in advance. This detection uses the Alexa Top 1 million domain names to build a model of what normal domains look like. It uses this to identify domains that may have been randomly generated by an algorithm. The triThreshold is set to 500 - increase this to report on domains that

Attribute Value
Type Analytic Rule
Solution Standalone Content
ID 4acd3a04-2fad-4efc-8a4b-51476594cec4
Severity Medium
Kind Scheduled
Tactics CommandAndControl
Techniques T1568
Required Connectors Zscaler, Barracuda, CEF, CheckPoint, CiscoASA, F5, Fortinet, PaloAltoNetworks
Source View on GitHub

Tables Used

This content item queries data from the following tables:

Table Transformations Ingestion API Lake-Only
CommonSecurityLog ?

Associated Connectors

The following connectors provide data for this content item:

Connector Solution
CefAma Common Event Format
CloudNSSAuditLogs_ccp Zscaler Internet Access
CloudNSSCASBActivityLogs_ccp Zscaler Internet Access
CloudNSSCASBCRMLogs_ccp Zscaler Internet Access
CloudNSSCASBCloudStorageLogs_ccp Zscaler Internet Access
CloudNSSCASBCollabLogs_ccp Zscaler Internet Access
CloudNSSCASBEmailLogs_ccp Zscaler Internet Access
CloudNSSCASBFileSharingLogs_ccp Zscaler Internet Access
CloudNSSCASBITSMLogs_ccp Zscaler Internet Access
CloudNSSCASBRepoLogs_ccp Zscaler Internet Access
CloudNSSDNSLogs_ccp Zscaler Internet Access
CloudNSSEmailDLPLogs_ccp Zscaler Internet Access
CloudNSSEndpointDLPLogs_ccp Zscaler Internet Access
CloudNSSFWLogs_ccp Zscaler Internet Access
CloudNSSTunnelLogs_ccp Zscaler Internet Access
CloudNSSWebLogs_ccp Zscaler Internet Access
VirtualMetricDirectorProxy VirtualMetric DataStream
VirtualMetricMSSentinelConnector VirtualMetric DataStream
VirtualMetricMSSentinelDataLakeConnector VirtualMetric DataStream

Solutions: Common Event Format, VirtualMetric DataStream, Zscaler Internet Access


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