Cisco WSA - Access to unwanted site

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Id	38029e86-030c-46c4-8a91-a2be7c74d74c
Rulename	Cisco WSA - Access to unwanted site
Description	Detects when users attempting to access sites from high risk category.
Severity	High
Tactics	InitialAccess
Techniques	T1566
Required data connectors	SyslogAma
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoWSA/Analytic Rules/CiscoWSAAccessToUnwantedSite.yaml
Version	1.0.3
Arm template	38029e86-030c-46c4-8a91-a2be7c74d74c.json

KQL

let risky_sites = dynamic(['IW_adlt', 'IW_hack', 'IW_porn']);
CiscoWSAEvent
| where UrlCategory in~ (risky_sites)
| where DvcAction =~ 'DEFAULT_CASE'
| extend AccountCustomEntity = SrcUserName

YAML

OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoWSA/Analytic Rules/CiscoWSAAccessToUnwantedSite.yaml
queryFrequency: 1h
name: Cisco WSA - Access to unwanted site
severity: High
triggerThreshold: 0
query: |
  let risky_sites = dynamic(['IW_adlt', 'IW_hack', 'IW_porn']);
  CiscoWSAEvent
  | where UrlCategory in~ (risky_sites)
  | where DvcAction =~ 'DEFAULT_CASE'
  | extend AccountCustomEntity = SrcUserName  
requiredDataConnectors:
- datatypes:
  - Syslog
  connectorId: SyslogAma
relevantTechniques:
- T1566
status: Available
triggerOperator: gt
queryPeriod: 1h
description: |
    'Detects when users attempting to access sites from high risk category.'
id: 38029e86-030c-46c4-8a91-a2be7c74d74c
version: 1.0.3
entityMappings:
- fieldMappings:
  - columnName: AccountCustomEntity
    identifier: Name
  entityType: Account
kind: Scheduled
tactics:
- InitialAccess

ARM