CYFIRMA - High severity Malicious Network Indicators with Monitor Action Rule
| Id | 8317de44-09e4-4a04-8fae-c38c1b72064b |
| Rulename | CYFIRMA - High severity Malicious Network Indicators with Monitor Action Rule |
| Description | “This rule detects high-confidence network-based indicators such as IP addresses, domains, and URLs reported by CYFIRMA threat intelligence with a recommended action of ‘Monitor’ and no specified role. These indicators may be associated with infrastructure used in phishing campaigns, malware, or initial access via watering hole or drive-by compromise techniques.” |
| Severity | High |
| Tactics | InitialAccess Execution Reconnaissance Impact |
| Techniques | T1566 T1189 T1204 T1595 T1498 T1566.002 T1204.001 T1595.002 |
| 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/NetworkIndicatorsMonitorHighSeverityRule.yaml |
| Version | 1.0.0 |
| Arm template | 8317de44-09e4-4a04-8fae-c38c1b72064b.json |
//Network Indicators with Monitor Action
let timeFrame= 5m;
CyfirmaIndicators_CL
| where ConfidenceScore >= 80
and TimeGenerated between (ago(timeFrame) .. now())
and pattern !contains 'file:hashes' and RecommendedActions has 'Monitor' and (isempty(Roles) or not(Roles has_any ('Command & Control', 'Malware', 'TOR', 'Trojan', '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
requiredDataConnectors:
- connectorId: CyfirmaCyberIntelligenceDC
dataTypes:
- CyfirmaIndicators_CL
tactics:
- InitialAccess
- Execution
- Reconnaissance
- Impact
eventGroupingSettings:
aggregationKind: AlertPerResult
incidentConfiguration:
createIncident: true
groupingConfiguration:
enabled: false
lookbackDuration: 5m
matchingMethod: AllEntities
reopenClosedIncident: false
description: |
"This rule detects high-confidence network-based indicators such as IP addresses, domains, and URLs reported by CYFIRMA threat intelligence with a recommended action of 'Monitor' and no specified role.
These indicators may be associated with infrastructure used in phishing campaigns, malware, or initial access via watering hole or drive-by compromise techniques."
query: |
//Network Indicators with Monitor Action
let timeFrame= 5m;
CyfirmaIndicators_CL
| where ConfidenceScore >= 80
and TimeGenerated between (ago(timeFrame) .. now())
and pattern !contains 'file:hashes' and RecommendedActions has 'Monitor' and (isempty(Roles) or not(Roles has_any ('Command & Control', 'Malware', 'TOR', 'Trojan', '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
id: 8317de44-09e4-4a04-8fae-c38c1b72064b
triggerOperator: GreaterThan
alertDetailsOverride:
alertDisplayNameFormat: 'High-Confidence Malicious Network Indicators with Monitor Action Rule - {{name}} '
alertDynamicProperties:
- alertProperty: ProductName
value: ProductName
- alertProperty: ProviderName
value: ProviderName
alertDescriptionFormat: '{{Description}} - {{name}} '
relevantTechniques:
- T1566
- T1189
- T1204
- T1595
- T1498
- T1566.002
- T1204.001
- T1595.002
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Cyber Intelligence/Analytic Rules/NetworkIndicatorsMonitorHighSeverityRule.yaml
queryFrequency: 5m
enabled: false
severity: High
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
name: CYFIRMA - High severity Malicious Network Indicators with Monitor Action Rule
suppressionEnabled: true
suppressionDuration: 5m
queryPeriod: 5m
kind: Scheduled
triggerThreshold: 0
version: 1.0.0
customDetails:
TimeGenerated: TimeGenerated
IPAbuse: IPAbuse
Country: Country
ThreatType: ThreatType
RecommendedActions: RecommendedActions
Description: Description
ConfidenceScore: ConfidenceScore
ValidFrom: valid_from
Created: created
ThreatActors: ThreatActors
Modified: modified
Sources: Sources
IndicatorID: IndicatorID
Tags: Tags
SecurityVendors: SecurityVendors
Roles: Roles
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"workspace": {
"type": "String"
}
},
"resources": [
{
"apiVersion": "2024-01-01-preview",
"id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/8317de44-09e4-4a04-8fae-c38c1b72064b')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/8317de44-09e4-4a04-8fae-c38c1b72064b')]",
"properties": {
"alertDetailsOverride": {
"alertDescriptionFormat": "{{Description}} - {{name}} ",
"alertDisplayNameFormat": "High-Confidence Malicious Network Indicators with Monitor Action Rule - {{name}} ",
"alertDynamicProperties": [
{
"alertProperty": "ProductName",
"value": "ProductName"
},
{
"alertProperty": "ProviderName",
"value": "ProviderName"
}
]
},
"alertRuleTemplateName": "8317de44-09e4-4a04-8fae-c38c1b72064b",
"customDetails": {
"ConfidenceScore": "ConfidenceScore",
"Country": "Country",
"Created": "created",
"Description": "Description",
"IndicatorID": "IndicatorID",
"IPAbuse": "IPAbuse",
"Modified": "modified",
"RecommendedActions": "RecommendedActions",
"Roles": "Roles",
"SecurityVendors": "SecurityVendors",
"Sources": "Sources",
"Tags": "Tags",
"ThreatActors": "ThreatActors",
"ThreatType": "ThreatType",
"TimeGenerated": "TimeGenerated",
"ValidFrom": "valid_from"
},
"description": "\"This rule detects high-confidence network-based indicators such as IP addresses, domains, and URLs reported by CYFIRMA threat intelligence with a recommended action of 'Monitor' and no specified role. \nThese indicators may be associated with infrastructure used in phishing campaigns, malware, or initial access via watering hole or drive-by compromise techniques.\"\n",
"displayName": "CYFIRMA - High severity Malicious Network Indicators with Monitor Action Rule",
"enabled": false,
"entityMappings": [
{
"entityType": "IP",
"fieldMappings": [
{
"columnName": "IPv4",
"identifier": "Address"
}
]
},
{
"entityType": "IP",
"fieldMappings": [
{
"columnName": "IPv6",
"identifier": "Address"
}
]
},
{
"entityType": "DNS",
"fieldMappings": [
{
"columnName": "Domain",
"identifier": "DomainName"
}
]
},
{
"entityType": "URL",
"fieldMappings": [
{
"columnName": "URL",
"identifier": "Url"
}
]
}
],
"eventGroupingSettings": {
"aggregationKind": "AlertPerResult"
},
"incidentConfiguration": {
"createIncident": true,
"groupingConfiguration": {
"enabled": false,
"lookbackDuration": "PT5M",
"matchingMethod": "AllEntities",
"reopenClosedIncident": false
}
},
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Cyber Intelligence/Analytic Rules/NetworkIndicatorsMonitorHighSeverityRule.yaml",
"query": "//Network Indicators with Monitor Action \nlet timeFrame= 5m;\nCyfirmaIndicators_CL \n| where ConfidenceScore >= 80\n and TimeGenerated between (ago(timeFrame) .. now())\n and pattern !contains 'file:hashes' and RecommendedActions has 'Monitor' and (isempty(Roles) or not(Roles has_any ('Command & Control', 'Malware', 'TOR', 'Trojan', 'Phishing')))\n| extend IPv4 = extract(@\"ipv4-addr:value\\s*=\\s*'([^']+)'\", 1, pattern)\n| extend IPv6 = extract(@\"ipv6-addr:value\\s*=\\s*'([^']+)'\", 1, pattern)\n| extend URL = extract(@\"url:value\\s*=\\s*'([^']+)'\", 1, pattern)\n| extend Domain = extract(@\"domain-name:value\\s*=\\s*'([^']+)'\", 1, pattern)\n| extend parsed = parse_json(extensions)\n| extend extensionKeys = bag_keys(parsed)\n| mv-expand extensionKeys\n| extend extensionKeyStr = tostring(extensionKeys)\n| extend ext = parsed[extensionKeyStr]\n| extend props = ext.properties\n| extend \n extension_id = extensionKeyStr,\n ASN_Owner = props.asn_owner,\n ASN = props.asn,\n ProviderName = 'CYFIRMA',\n ProductName = 'DeCYFIR/DeTCT'\n| project\n IPv4,\n IPv6,\n URL,\n Domain,\n ThreatActors,\n RecommendedActions,\n Sources,\n Roles,\n Country,\n IPAbuse,\n name,\n Description,\n ConfidenceScore,\n IndicatorID,\n created,\n modified,\n valid_from,\n Tags,\n ThreatType,\n TimeGenerated,\n SecurityVendors,\n ProductName,\n ProviderName\n",
"queryFrequency": "PT5M",
"queryPeriod": "PT5M",
"severity": "High",
"subTechniques": [
"T1566.002",
"T1204.001",
"T1595.002"
],
"suppressionDuration": "PT5M",
"suppressionEnabled": true,
"tactics": [
"Execution",
"Impact",
"InitialAccess",
"Reconnaissance"
],
"techniques": [
"T1189",
"T1204",
"T1498",
"T1566",
"T1595"
],
"templateVersion": "1.0.0",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}