CYFIRMA - High severity Malicious Phishing Network Indicators - Block Recommended Rule

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Id	6f053867-dbd8-4755-924d-577e3db7f5a6
Rulename	CYFIRMA - High severity Malicious Phishing Network Indicators - Block Recommended Rule
Description	“This analytics rule identifies network-based indicators such as URLs, IP addresses, and domains related to phishing campaigns, as reported by CYFIRMA threat intelligence. These indicators are flagged with a recommended action to block and are categorized under the ‘Phishing’ role. Such infrastructure is often used to deliver phishing emails, host fake login portals, or redirect victims to credential-harvesting pages. Blocking these indicators proactively helps prevent user compromise and data theft.”
Severity	High
Tactics	InitialAccess Execution CredentialAccess Exfiltration
Techniques	T1566 T1204 T1556 T1110 T1041 T1566.001 T1566.002 T1204.001 T1556.002 T1110.003
Required data connectors	CyfirmaCyberIntelligenceDC
Kind	Scheduled
Query frequency	5m
Query period	5m
Trigger threshold	0
Trigger operator	GreaterThan
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Cyber Intelligence/Analytic Rules/PhishingNetworkIndicatorsBlockHighSeverityRule.yaml
Version	1.0.1
Arm template	6f053867-dbd8-4755-924d-577e3db7f5a6.json

KQL

//Malicious Phishing Network Indicators - Block Recommended
let timeFrame= 5m;
CyfirmaIndicators_CL 
| where ConfidenceScore >= 80
    and TimeGenerated between (ago(timeFrame) .. now())
    and pattern !contains 'file:hashes' and RecommendedActions has 'Block' and Roles has 'Phishing'
| extend IPv4 = extract(@"ipv4-addr:value\s*=\s*'([^']+)'", 1, pattern)
| extend IPv6 = extract(@"ipv6-addr:value\s*=\s*'([^']+)'", 1, pattern)
| extend URL = extract(@"url:value\s*=\s*'([^']+)'", 1, pattern)
| extend Domain = extract(@"domain-name:value\s*=\s*'([^']+)'", 1, pattern)
| extend parsed = parse_json(extensions)
| extend extensionKeys = bag_keys(parsed)
| mv-expand extensionKeys
| extend extensionKeyStr = tostring(extensionKeys)
| extend ext = parsed[extensionKeyStr]
| extend props = ext.properties
| extend 
    extension_id = extensionKeyStr,
    ASN_Owner = props.asn_owner,
    ASN = props.asn,
    ProviderName = 'CYFIRMA',
    ProductName = 'DeCYFIR/DeTCT'
| project
    IPv4,
    IPv6,
    URL,
    Domain,
    ThreatActors,
    RecommendedActions,
    Sources,
    Roles,
    Country,
    IPAbuse,
    name,
    Description,
    ConfidenceScore,
    IndicatorID,
    created,
    modified,
    valid_from,
    Tags,
    ThreatType,
    TimeGenerated,
    SecurityVendors,
    ProductName,
    ProviderName

YAML

name: CYFIRMA - High severity Malicious Phishing Network Indicators - Block Recommended Rule
alertDetailsOverride:
  alertDynamicProperties:
  - value: ProductName
    alertProperty: ProductName
  - value: ProviderName
    alertProperty: ProviderName
  alertDisplayNameFormat: 'High-Confidence Malicious Phishing Network Indicators - Block Recommended - {{name}} '
  alertDescriptionFormat: '{{Description}} - {{name}} '
entityMappings:
- fieldMappings:
  - columnName: IPv4
    identifier: Address
  entityType: IP
- fieldMappings:
  - columnName: IPv6
    identifier: Address
  entityType: IP
- fieldMappings:
  - columnName: Domain
    identifier: DomainName
  entityType: DNS
- fieldMappings:
  - columnName: URL
    identifier: Url
  entityType: URL
version: 1.0.1
enabled: false
suppressionEnabled: true
id: 6f053867-dbd8-4755-924d-577e3db7f5a6
triggerOperator: GreaterThan
query: |
  //Malicious Phishing Network Indicators - Block Recommended
  let timeFrame= 5m;
  CyfirmaIndicators_CL 
  | where ConfidenceScore >= 80
      and TimeGenerated between (ago(timeFrame) .. now())
      and pattern !contains 'file:hashes' and RecommendedActions has 'Block' and Roles has 'Phishing'
  | extend IPv4 = extract(@"ipv4-addr:value\s*=\s*'([^']+)'", 1, pattern)
  | extend IPv6 = extract(@"ipv6-addr:value\s*=\s*'([^']+)'", 1, pattern)
  | extend URL = extract(@"url:value\s*=\s*'([^']+)'", 1, pattern)
  | extend Domain = extract(@"domain-name:value\s*=\s*'([^']+)'", 1, pattern)
  | extend parsed = parse_json(extensions)
  | extend extensionKeys = bag_keys(parsed)
  | mv-expand extensionKeys
  | extend extensionKeyStr = tostring(extensionKeys)
  | extend ext = parsed[extensionKeyStr]
  | extend props = ext.properties
  | extend 
      extension_id = extensionKeyStr,
      ASN_Owner = props.asn_owner,
      ASN = props.asn,
      ProviderName = 'CYFIRMA',
      ProductName = 'DeCYFIR/DeTCT'
  | project
      IPv4,
      IPv6,
      URL,
      Domain,
      ThreatActors,
      RecommendedActions,
      Sources,
      Roles,
      Country,
      IPAbuse,
      name,
      Description,
      ConfidenceScore,
      IndicatorID,
      created,
      modified,
      valid_from,
      Tags,
      ThreatType,
      TimeGenerated,
      SecurityVendors,
      ProductName,
      ProviderName  
description: |
  "This analytics rule identifies network-based indicators such as URLs, IP addresses, and domains related to phishing campaigns, as reported by CYFIRMA threat intelligence. 
  These indicators are flagged with a recommended action to block and are categorized under the 'Phishing' role.
  Such infrastructure is often used to deliver phishing emails, host fake login portals, or redirect victims to credential-harvesting pages. 
  Blocking these indicators proactively helps prevent user compromise and data theft."  
suppressionDuration: 5m
kind: Scheduled
queryFrequency: 5m
triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Cyber Intelligence/Analytic Rules/PhishingNetworkIndicatorsBlockHighSeverityRule.yaml
severity: High
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    lookbackDuration: PT5H
    reopenClosedIncident: false
    matchingMethod: AllEntities
    enabled: false
queryPeriod: 5m
requiredDataConnectors:
- dataTypes:
  - CyfirmaIndicators_CL
  connectorId: CyfirmaCyberIntelligenceDC
customDetails:
  IndicatorID: IndicatorID
  Sources: Sources
  IPAbuse: IPAbuse
  Country: Country
  ThreatType: ThreatType
  RecommendedActions: RecommendedActions
  Description: Description
  Modified: modified
  ConfidenceScore: ConfidenceScore
  Created: created
  Tags: Tags
  TimeGenerated: TimeGenerated
  ValidFrom: valid_from
  SecurityVendors: SecurityVendors
  ThreatActors: ThreatActors
  Roles: Roles
eventGroupingSettings:
  aggregationKind: AlertPerResult
relevantTechniques:
- T1566
- T1204
- T1556
- T1110
- T1041
- T1566.001
- T1566.002
- T1204.001
- T1556.002
- T1110.003
tactics:
- InitialAccess
- Execution
- CredentialAccess
- Exfiltration

ARM