61 строка
2.6 KiB
YAML
61 строка
2.6 KiB
YAML
id: f9949656-473f-4503-bf43-a9d9890f7d08
|
|
name: (Preview) TI map IP entity to AppServiceHTTPLogs
|
|
description: |
|
|
'Identifies a match in AppServiceHTTPLogs from any IP IOC from TI'
|
|
severity: Medium
|
|
requiredDataConnectors:
|
|
- connectorId: ThreatIntelligence
|
|
dataTypes:
|
|
- ThreatIntelligenceIndicator
|
|
- connectorId: ThreatIntelligenceTaxii
|
|
dataTypes:
|
|
- ThreatIntelligenceIndicator
|
|
queryFrequency: 1h
|
|
queryPeriod: 14d
|
|
triggerOperator: gt
|
|
triggerThreshold: 0
|
|
tactics:
|
|
- Impact
|
|
query: |
|
|
|
|
let dt_lookBack = 1h;
|
|
let ioc_lookBack = 14d;
|
|
ThreatIntelligenceIndicator
|
|
| where TimeGenerated >= ago(ioc_lookBack) and ExpirationDateTime > now()
|
|
| where Active == true
|
|
// Picking up only IOC's that contain the entities we want
|
|
| where isnotempty(NetworkIP) or isnotempty(EmailSourceIpAddress) or isnotempty(NetworkDestinationIP) or isnotempty(NetworkSourceIP)
|
|
// As there is potentially more than 1 indicator type for matching IP, taking NetworkIP first, then others if that is empty.
|
|
// Taking the first non-empty value based on potential IOC match availability
|
|
| extend TI_ipEntity = iff(isnotempty(NetworkIP), NetworkIP, NetworkDestinationIP)
|
|
| extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(NetworkSourceIP), NetworkSourceIP, TI_ipEntity)
|
|
| extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(EmailSourceIpAddress), EmailSourceIpAddress, TI_ipEntity)
|
|
| join (
|
|
AppServiceHTTPLogs | where TimeGenerated >= ago(dt_lookBack)
|
|
| where isnotempty(CIp)
|
|
| extend WebApp = split(_ResourceId, '/')[8]
|
|
// renaming time column so it is clear the log this came from
|
|
| extend AppService_TimeGenerated = TimeGenerated
|
|
)
|
|
on $left.TI_ipEntity == $right.CIp
|
|
| summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
|
|
| project LatestIndicatorTime, Description, ActivityGroupNames, IndicatorId, ThreatType, Url, ExpirationDateTime, ConfidenceScore, AppService_TimeGenerated, TI_ipEntity, CsUsername, WebApp = split(_ResourceId, '/')[8], CIp, CsHost, NetworkIP, NetworkDestinationIP, NetworkSourceIP, EmailSourceIpAddress
|
|
| extend timestamp = AppService_TimeGenerated, AccountCustomEntity = CsUsername, IPCustomEntity = CIp, URLCustomEntity = CsHost
|
|
entityMappings:
|
|
- entityType: Host
|
|
fieldMappings:
|
|
- identifier: FullName
|
|
columnName: HostCustomEntity
|
|
- entityType: Account
|
|
fieldMappings:
|
|
- identifier: FullName
|
|
columnName: AccountCustomEntity
|
|
- entityType: IP
|
|
fieldMappings:
|
|
- identifier: Address
|
|
columnName: IPCustomEntity
|
|
- entityType: URL
|
|
fieldMappings:
|
|
- identifier: Url
|
|
columnName: URLCustomEntity
|
|
version: 1.0.0 |