Ping Federate - Authentication from new IP

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Id	30583ed4-d13c-43b8-baf2-d75fbe727210
Rulename	Ping Federate - Authentication from new IP.
Description	Detects authentication requests from new IP address.
Severity	Low
Tactics	InitialAccess
Techniques	T1078
Required data connectors	CefAma
Kind	Scheduled
Query frequency	1h
Query period	14d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/PingFederate/Analytic Rules/PingFederateAuthFromNewSource.yaml
Version	1.0.3
Arm template	30583ed4-d13c-43b8-baf2-d75fbe727210.json

KQL

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

YAML

name: Ping Federate - Authentication from new IP.
id: 30583ed4-d13c-43b8-baf2-d75fbe727210
description: |
    'Detects authentication requests from new IP address.'
triggerThreshold: 0
entityMappings:
- fieldMappings:
  - columnName: AccountCustomEntity
    identifier: Name
  entityType: Account
- fieldMappings:
  - columnName: IpCustomEntity
    identifier: Address
  entityType: IP
version: 1.0.3
triggerOperator: gt
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  
tactics:
- InitialAccess
kind: Scheduled
queryFrequency: 1h
severity: Low
queryPeriod: 14d
requiredDataConnectors:
- dataTypes:
  - CommonSecurityLog
  connectorId: CefAma
status: Available
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/PingFederate/Analytic Rules/PingFederateAuthFromNewSource.yaml
relevantTechniques:
- T1078

ARM