CYFIRMA - Medium severity Malicious Phishing Network Indicators - Monitor Recommended Rule
| Id | 1b9603dd-4787-403e-8a35-387c554bd15b |
| Rulename | CYFIRMA - Medium severity Malicious Phishing Network Indicators - Monitor 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. monitoring these indicators proactively helps prevent user compromise and data theft.” |
| Severity | Medium |
| 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/PhishingNetworkIndicatorsMonitorMediumSeverityRule.yaml |
| Version | 1.0.1 |
| Arm template | 1b9603dd-4787-403e-8a35-387c554bd15b.json |
//Phishing Network Indicators - Monitor Recommended
let timeFrame= 5m;
CyfirmaIndicators_CL
| where (ConfidenceScore < 80 and ConfidenceScore >= 50)
and TimeGenerated between (ago(timeFrame) .. now())
and pattern !contains 'file:hashes' and RecommendedActions has 'Monitor' 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
queryPeriod: 5m
query: |
//Phishing Network Indicators - Monitor Recommended
let timeFrame= 5m;
CyfirmaIndicators_CL
| where (ConfidenceScore < 80 and ConfidenceScore >= 50)
and TimeGenerated between (ago(timeFrame) .. now())
and pattern !contains 'file:hashes' and RecommendedActions has 'Monitor' 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
enabled: false
name: CYFIRMA - Medium severity Malicious Phishing Network Indicators - Monitor Recommended Rule
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
incidentConfiguration:
groupingConfiguration:
lookbackDuration: PT5H
reopenClosedIncident: false
matchingMethod: AllEntities
enabled: false
createIncident: true
suppressionDuration: 5m
suppressionEnabled: true
alertDetailsOverride:
alertDisplayNameFormat: 'High-Confidence Malicious Phishing Network Indicators - Monitor Recommended - {{name}} '
alertDescriptionFormat: '{{Description}} - {{name}} '
alertDynamicProperties:
- value: ProductName
alertProperty: ProductName
- value: ProviderName
alertProperty: 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.
monitoring these indicators proactively helps prevent user compromise and data theft."
kind: Scheduled
version: 1.0.1
eventGroupingSettings:
aggregationKind: AlertPerResult
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Cyber Intelligence/Analytic Rules/PhishingNetworkIndicatorsMonitorMediumSeverityRule.yaml
queryFrequency: 5m
severity: Medium
requiredDataConnectors:
- connectorId: CyfirmaCyberIntelligenceDC
dataTypes:
- CyfirmaIndicators_CL
triggerOperator: GreaterThan
triggerThreshold: 0
customDetails:
SecurityVendors: SecurityVendors
ValidFrom: valid_from
IPAbuse: IPAbuse
ThreatType: ThreatType
TimeGenerated: TimeGenerated
Roles: Roles
Tags: Tags
Description: Description
Modified: modified
IndicatorID: IndicatorID
Created: created
ThreatActors: ThreatActors
RecommendedActions: RecommendedActions
ConfidenceScore: ConfidenceScore
Sources: Sources
Country: Country
tactics:
- InitialAccess
- Execution
- CredentialAccess
- Exfiltration
id: 1b9603dd-4787-403e-8a35-387c554bd15b
relevantTechniques:
- T1566
- T1204
- T1556
- T1110
- T1041
- T1566.001
- T1566.002
- T1204.001
- T1556.002
- T1110.003