Imperva - Abnormal protocol usage

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Id	363307f6-09ba-4926-ad52-03aadfd24b5e
Rulename	Imperva - Abnormal protocol usage
Description	Detects abnormal protocol usage.
Severity	Medium
Tactics	InitialAccess
Techniques	T1190 T1133
Required data connectors	ImpervaWAFCloudAPI
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/ImpervaCloudWAF/Analytic Rules/ImpervaAbnormalProtocolUsage.yaml
Version	1.0.0
Arm template	363307f6-09ba-4926-ad52-03aadfd24b5e.json

KQL

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

YAML

tactics:
- InitialAccess
id: 363307f6-09ba-4926-ad52-03aadfd24b5e
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ImpervaCloudWAF/Analytic Rules/ImpervaAbnormalProtocolUsage.yaml
status: Available
description: |
    'Detects abnormal protocol usage.'
version: 1.0.0
severity: Medium
triggerThreshold: 0
entityMappings:
- fieldMappings:
  - identifier: Address
    columnName: IPCustomEntity
  entityType: IP
kind: Scheduled
name: Imperva - Abnormal protocol usage
query: |
  ImpervaWAFCloud
  | where NetworkApplicationProtocol in~ ('HTTP', 'HTTPs')
  | where DstPortNumber !in ('80', '443')
  | extend IPCustomEntity = SrcIpAddr  
queryPeriod: 1h
queryFrequency: 1h
triggerOperator: gt
requiredDataConnectors:
- connectorId: ImpervaWAFCloudAPI
  dataTypes:
  - ImpervaWAFCloud
relevantTechniques:
- T1190
- T1133

ARM