Cisco WSA - Unscannable file or scan error

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Id	9b61a945-ebcb-4245-b6e4-51f3addb5248
Rulename	Cisco WSA - Unscannable file or scan error
Description	Detects unscanned downloaded file.
Severity	Medium
Tactics	InitialAccess
Techniques	T1189
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/CiscoWSAUnscannableFile.yaml
Version	1.0.2
Arm template	9b61a945-ebcb-4245-b6e4-51f3addb5248.json

KQL

CiscoWSAEvent
| where isnotempty(AmpFileName)
| where AmpScanningVerdict in ('2', '3')
| extend IPCustomEntity = SrcIpAddr, FileCustomEntity = AmpFileName, AccountCustomEntity = SrcUserName

YAML

id: 9b61a945-ebcb-4245-b6e4-51f3addb5248
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoWSA/Analytic Rules/CiscoWSAUnscannableFile.yaml
entityMappings:
- fieldMappings:
  - identifier: Address
    columnName: IPCustomEntity
  entityType: IP
- fieldMappings:
  - identifier: Name
    columnName: FileCustomEntity
  entityType: File
- fieldMappings:
  - identifier: Name
    columnName: AccountCustomEntity
  entityType: Account
requiredDataConnectors:
- datatypes:
  - Syslog
  connectorId: SyslogAma
queryFrequency: 1h
queryPeriod: 1h
status: Available
query: |
  CiscoWSAEvent
  | where isnotempty(AmpFileName)
  | where AmpScanningVerdict in ('2', '3')
  | extend IPCustomEntity = SrcIpAddr, FileCustomEntity = AmpFileName, AccountCustomEntity = SrcUserName  
name: Cisco WSA - Unscannable file or scan error
kind: Scheduled
tactics:
- InitialAccess
severity: Medium
relevantTechniques:
- T1189
triggerThreshold: 0
version: 1.0.2
description: |
    'Detects unscanned downloaded file.'

ARM