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

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

ARM