Cisco WSA - Suspected protocol abuse

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Id	6f756792-4888-48a5-97cf-40d9430dc932
Rulename	Cisco WSA - Suspected protocol abuse
Description	Detects possible protocol abuse.
Severity	Medium
Tactics	Exfiltration
Techniques	T1048
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/CiscoWSAProtocolAbuse.yaml
Version	1.0.2
Arm template	6f756792-4888-48a5-97cf-40d9430dc932.json

KQL

CiscoWSAEvent
| where DstPortNumber !in ('80', '443')
| where NetworkApplicationProtocol in~ ('HTTP', 'HTTPs')
| extend IPCustomEntity = SrcIpAddr, AccountCustomEntity = SrcUserName

YAML

OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoWSA/Analytic Rules/CiscoWSAProtocolAbuse.yaml
queryPeriod: 1h
kind: Scheduled
name: Cisco WSA - Suspected protocol abuse
status: Available
entityMappings:
- fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
  entityType: IP
- fieldMappings:
  - columnName: AccountCustomEntity
    identifier: Name
  entityType: Account
tactics:
- Exfiltration
description: |
    'Detects possible protocol abuse.'
severity: Medium
requiredDataConnectors:
- connectorId: SyslogAma
  datatypes:
  - Syslog
queryFrequency: 1h
triggerThreshold: 0
version: 1.0.2
query: |
  CiscoWSAEvent
  | where DstPortNumber !in ('80', '443')
  | where NetworkApplicationProtocol in~ ('HTTP', 'HTTPs')
  | extend IPCustomEntity = SrcIpAddr, AccountCustomEntity = SrcUserName  
relevantTechniques:
- T1048
id: 6f756792-4888-48a5-97cf-40d9430dc932
triggerOperator: gt

ARM