Ping Federate - Authentication from new IP

let known_src = 
PingFederateEvent
| where TimeGenerated between (ago(14d) .. (1d))
| where EventType in~ ('AUTHN_ATTEMPT', 'SSO')
| where isnotempty(SrcIpAddr)
| summarize makeset(SrcIpAddr);
PingFederateEvent
| where EventType in~ ('AUTHN_ATTEMPT', 'SSO')
| where isnotempty(SrcIpAddr)
| where SrcIpAddr !in (known_src)
| extend AccountCustomEntity = DstUserName
| extend IpCustomEntity = SrcIpAddr

OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/PingFederate/Analytic Rules/PingFederateAuthFromNewSource.yaml
status: Available
name: Ping Federate - Authentication from new IP.
requiredDataConnectors:
- dataTypes:
  - CommonSecurityLog
  connectorId: CefAma
description: |
    'Detects authentication requests from new IP address.'
queryFrequency: 1h
tactics:
- InitialAccess
id: 30583ed4-d13c-43b8-baf2-d75fbe727210
queryPeriod: 14d
relevantTechniques:
- T1078
version: 1.0.3
triggerThreshold: 0
kind: Scheduled
query: |
  let known_src = 
  PingFederateEvent
  | where TimeGenerated between (ago(14d) .. (1d))
  | where EventType in~ ('AUTHN_ATTEMPT', 'SSO')
  | where isnotempty(SrcIpAddr)
  | summarize makeset(SrcIpAddr);
  PingFederateEvent
  | where EventType in~ ('AUTHN_ATTEMPT', 'SSO')
  | where isnotempty(SrcIpAddr)
  | where SrcIpAddr !in (known_src)
  | extend AccountCustomEntity = DstUserName
  | extend IpCustomEntity = SrcIpAddr  
severity: Low
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: AccountCustomEntity
    identifier: Name
- entityType: IP
  fieldMappings:
  - columnName: IpCustomEntity
    identifier: Address
triggerOperator: gt