61 строка
2.7 KiB
YAML
61 строка
2.7 KiB
YAML
id: 9713e3c0-1410-468d-b79e-383448434b2d
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name: (Preview) TI map IP entity to VMConnection
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description: |
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'Identifies a match in VMConnection from any IP IOC from TI'
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severity: Medium
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requiredDataConnectors:
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- connectorId: ThreatIntelligence
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dataTypes:
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- ThreatIntelligenceIndicator
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- connectorId: ThreatIntelligenceTaxii
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dataTypes:
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- ThreatIntelligenceIndicator
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- connectorId: AzureMonitor(VMInsights)
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dataTypes:
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- VMConnection
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queryFrequency: 1h
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queryPeriod: 14d
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triggerOperator: gt
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triggerThreshold: 0
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tactics:
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- Impact
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query: |
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let dt_lookBack = 1h;
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let ioc_lookBack = 14d;
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ThreatIntelligenceIndicator
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| where TimeGenerated >= ago(ioc_lookBack) and ExpirationDateTime > now()
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| where Active == true
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// Picking up only IOC's that contain the entities we want
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| where isnotempty(NetworkIP) or isnotempty(EmailSourceIpAddress) or isnotempty(NetworkDestinationIP) or isnotempty(NetworkSourceIP)
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// As there is potentially more than 1 indicator type for matching IP, taking NetworkIP first, then others if that is empty.
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// Taking the first non-empty value based on potential IOC match availability
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| extend TI_ipEntity = iff(isnotempty(NetworkIP), NetworkIP, NetworkDestinationIP)
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| extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(NetworkSourceIP), NetworkSourceIP, TI_ipEntity)
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| extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(EmailSourceIpAddress), EmailSourceIpAddress, TI_ipEntity)
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| join (
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VMConnection
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| where TimeGenerated >= ago(dt_lookBack)
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// renaming time column so it is clear the log this came from
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| extend VMConnection_TimeGenerated = TimeGenerated
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)
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on $left.TI_ipEntity == $right.RemoteIp
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| where VMConnection_TimeGenerated >= TimeGenerated and VMConnection_TimeGenerated < ExpirationDateTime
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| summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
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| project LatestIndicatorTime, Description, ActivityGroupNames, IndicatorId, ThreatType, Url, ExpirationDateTime, ConfidenceScore, VMConnection_TimeGenerated,
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TI_ipEntity, Computer, Direction, ProcessName, SourceIp, DestinationIp, RemoteIp, Protocol, DestinationPort, NetworkIP, NetworkDestinationIP, NetworkSourceIP, EmailSourceIpAddress
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| extend timestamp = VMConnection_TimeGenerated, IPCustomEntity = RemoteIp, HostCustomEntity = Computer, URLCustomEntity = Url
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entityMappings:
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- entityType: Host
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fieldMappings:
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- identifier: FullName
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columnName: HostCustomEntity
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- entityType: IP
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fieldMappings:
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- identifier: Address
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columnName: IPCustomEntity
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- entityType: URL
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fieldMappings:
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- identifier: Url
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columnName: URLCustomEntity
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version: 1.0.0 |