Infoblox - TI - CommonSecurityLog Match Found - MalwareC2

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Id	5b0864a9-4577-4087-b9fa-de3e14a8a999
Rulename	Infoblox - TI - CommonSecurityLog Match Found - MalwareC2
Description	CommonSecurityLog (CEF) MalwareC2/MalwareC2DGA match found in your Infoblox TIDE Threat Intelligence. Customize query count, scheduling, responses and more. Modify data sources, types and threat properties as desired.
Severity	Medium
Tactics	Impact
Techniques	T1498 T1565
Required data connectors	CefAma ThreatIntelligence
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/Infoblox Cloud Data Connector/Analytic Rules/Infoblox-TI-CommonSecurityLogMatchFound-MalwareC2.yaml
Version	1.0.3
Arm template	5b0864a9-4577-4087-b9fa-de3e14a8a999.json

KQL

let dt_lookBack = 1h;
let ioc_lookBack = 14d;
let TI = ThreatIntelligenceIndicator
| where TimeGenerated >= ago(ioc_lookBack)
| summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
| where Active == true and ExpirationDateTime > now()  
| where Description has_cs "Infoblox"
| where Description has_cs "MalwareC2"
| where isnotempty(DomainName)
;
let Data = CommonSecurityLog
| extend HitTime = TimeGenerated
| where TimeGenerated >= ago(dt_lookBack)
| where isnotempty(DestinationDnsDomain)
//Remove trailing period at end of domain
| extend DestinationDnsDomain = trim_end(@"\.$", DestinationDnsDomain)
;
TI | join kind=innerunique Data on $left.DomainName == $right.DestinationDnsDomain
| where HitTime >= TimeGenerated and HitTime < ExpirationDateTime
| project LatestIndicatorTime, HitTime, DeviceEventClassID, DestinationDnsDomain, DeviceAction, SourceIP, DeviceName, SourceMACAddress, SourceUserName, AdditionalExtensions, 
AdditionalInformation, Description, ThreatType, TrafficLightProtocolLevel, Type, ConfidenceScore, ExpirationDateTime, SourceSystem, Action, IndicatorId, ExternalIndicatorId, Tags

YAML

description: |
    'CommonSecurityLog (CEF) MalwareC2/MalwareC2DGA match found in your Infoblox TIDE Threat Intelligence. Customize query count, scheduling, responses and more. Modify data sources, types and threat properties as desired.'
customDetails:
  SourceMACAddress: SourceMACAddress
triggerThreshold: 0
queryFrequency: 1h
requiredDataConnectors:
- connectorId: ThreatIntelligence
  dataTypes:
  - ThreatIntelligenceIndicator
- connectorId: CefAma
  dataTypes:
  - CommonSecurityLog
queryPeriod: 14d
tactics:
- Impact
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Infoblox Cloud Data Connector/Analytic Rules/Infoblox-TI-CommonSecurityLogMatchFound-MalwareC2.yaml
severity: Medium
kind: Scheduled
name: Infoblox - TI - CommonSecurityLog Match Found - MalwareC2
entityMappings:
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: SourceIP
- entityType: Host
  fieldMappings:
  - identifier: HostName
    columnName: DeviceName
  - identifier: FullName
    columnName: SourceUserName
- entityType: DNS
  fieldMappings:
  - identifier: DomainName
    columnName: DestinationDnsDomain
status: Available
relevantTechniques:
- T1498
- T1565
version: 1.0.3
incidentConfiguration:
  createIncident: true
query: |
  let dt_lookBack = 1h;
  let ioc_lookBack = 14d;
  let TI = ThreatIntelligenceIndicator
  | where TimeGenerated >= ago(ioc_lookBack)
  | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
  | where Active == true and ExpirationDateTime > now()  
  | where Description has_cs "Infoblox"
  | where Description has_cs "MalwareC2"
  | where isnotempty(DomainName)
  ;
  let Data = CommonSecurityLog
  | extend HitTime = TimeGenerated
  | where TimeGenerated >= ago(dt_lookBack)
  | where isnotempty(DestinationDnsDomain)
  //Remove trailing period at end of domain
  | extend DestinationDnsDomain = trim_end(@"\.$", DestinationDnsDomain)
  ;
  TI | join kind=innerunique Data on $left.DomainName == $right.DestinationDnsDomain
  | where HitTime >= TimeGenerated and HitTime < ExpirationDateTime
  | project LatestIndicatorTime, HitTime, DeviceEventClassID, DestinationDnsDomain, DeviceAction, SourceIP, DeviceName, SourceMACAddress, SourceUserName, AdditionalExtensions, 
  AdditionalInformation, Description, ThreatType, TrafficLightProtocolLevel, Type, ConfidenceScore, ExpirationDateTime, SourceSystem, Action, IndicatorId, ExternalIndicatorId, Tags  
id: 5b0864a9-4577-4087-b9fa-de3e14a8a999
triggerOperator: gt
eventGroupingSettings:
  aggregationKind: SingleAlert

ARM