MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Initial Access |
Rule body
id: 363307f6-09ba-4926-ad52-03aadfd24b5e
name: Imperva - Abnormal protocol usage
description: |
'Detects abnormal protocol usage.'
severity: Medium
status: Available
requiredDataConnectors:
- connectorId: ImpervaWAFCloudAPI
dataTypes:
- ImpervaWAFCloud
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
- InitialAccess
relevantTechniques:
- T1190
- T1133
query: |
ImpervaWAFCloud
| where NetworkApplicationProtocol in~ ('HTTP', 'HTTPs')
| where DstPortNumber !in ('80', '443')
| extend IPCustomEntity = SrcIpAddr
entityMappings:
- entityType: IP
fieldMappings:
- identifier: Address
columnName: IPCustomEntity
version: 1.0.0
kind: Scheduled
Stages and Predicates
Stage 1: source
ImpervaWAFCloud
Stage 2: where
| where NetworkApplicationProtocol in~ ('HTTP', 'HTTPs')
Stage 3: where
| where DstPortNumber !in ('80', '443')
Stage 4: extend
| extend IPCustomEntity = SrcIpAddr
Exclusions
The rule actively suppresses these predicates.
| Field | Kind | Excluded values | Search |
|---|---|---|---|
DstPortNumber | in | 443, 80 | excludes:DstPortNumber field:"DstPortNumber" value:"443" field:"DstPortNumber" value:"80" |
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
NetworkApplicationProtocol | in |
| field:"NetworkApplicationProtocol" kind:in |
Output fields
These fields are emitted when the rule matches.
| Field | Source |
|---|---|
IPCustomEntity | extend |