MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Initial Access |
Rule body
id: feb185cc-51f4-11ec-bf63-0242ac130002
name: PaloAlto - Possible flooding
description: |
'Detects possible flooding.'
severity: Medium
status: Available
requiredDataConnectors:
- connectorId: CefAma
dataTypes:
- CommonSecurityLog
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
- InitialAccess
relevantTechniques:
- T1190
- T1133
query: |
PaloAltoCDLEvent
| where EventResourceId =~ 'TRAFFIC'
| where isnotempty(NetworkSessionId)
| where DstBytes == 0 and tolong(NetworkPackets) > 0
| extend AccountCustomEntity = DstUsername, IPCustomEntity = SrcIpAddr
entityMappings:
- entityType: Account
fieldMappings:
- identifier: Name
columnName: AccountCustomEntity
- entityType: IP
fieldMappings:
- identifier: Address
columnName: IPCustomEntity
version: 1.0.4
kind: Scheduled
Stages and Predicates
Stage 1: source
PaloAltoCDLEvent
Stage 2: where
| where EventResourceId =~ 'TRAFFIC'
Stage 3: where
| where isnotempty(NetworkSessionId)
Stage 4: where
| where DstBytes == 0 and tolong(NetworkPackets) > 0
Stage 5: extend
| extend AccountCustomEntity = DstUsername, IPCustomEntity = SrcIpAddr
Indicators
These rows show field, operator, and value matches.
Output fields
These fields are emitted when the rule matches.
| Field | Source |
|---|---|
AccountCustomEntity | extend |
IPCustomEntity | extend |