CYFIRMA - Customer Accounts Leaks Detection Rule
Id | ebd1bf8d-aa18-4e66-9cad-555b71a290f1 |
Rulename | CYFIRMA - Customer Accounts Leaks Detection Rule |
Description | “Detects recent leaks of customer account credentials based on CYFIRMA’s threat intelligence. This rule surfaces the latest credential exposures, including email, username, and breach metadata. It enables security teams to quickly identify and investigate leaked customer data from third-party breaches, dark web listings, or public repositories.” |
Severity | High |
Tactics | CredentialAccess InitialAccess |
Techniques | T1552 T1078 |
Required data connectors | CyfirmaCompromisedAccountsDataConnector |
Kind | Scheduled |
Query frequency | 5m |
Query period | 5m |
Trigger threshold | 0 |
Trigger operator | gt |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Compromised Accounts/Analytic Rules/CustomerAccountsLeaksRule.yaml |
Version | 1.0.0 |
Arm template | ebd1bf8d-aa18-4e66-9cad-555b71a290f1.json |
// Customer Accounts Leaks - Latest per UID
let timeFrame = 5m;
CyfirmaCompromisedAccounts_CL
| where TimeGenerated between (ago(timeFrame) .. now())
and Category has "Customer Accounts Leaks"
| extend
ProviderName = 'CYFIRMA',
ProductName = 'DeCYFIR/DeTCT'
| summarize arg_max(TimeGenerated,
user_name,
email,
url,
password,
breach_date,
first_seen,
last_seen,
impact,
recommendations,
description,
source,
ProductName,
ProviderName
) by uid
| sort by TimeGenerated desc
entityMappings:
- fieldMappings:
- columnName: user_name
identifier: Name
- columnName: email
identifier: UPNSuffix
entityType: Account
- fieldMappings:
- columnName: url
identifier: Url
entityType: URL
triggerThreshold: 0
severity: High
suppressionDuration: 6h
queryFrequency: 5m
queryPeriod: 5m
customDetails:
TimeGenerated: TimeGenerated
LastSeen: last_seen
Recommendations: recommendations
BreachDate: breach_date
Impact: impact
FirstSeen: first_seen
Description: description
UID: uid
Source: source
relevantTechniques:
- T1552
- T1078
alertDetailsOverride:
alertDisplayNameFormat: Customer Leak - {{user_name}} - {{email}}
alertDescriptionFormat: '{{description}}'
alertDynamicProperties:
- alertProperty: ProductName
value: ProductName
- alertProperty: ProviderName
value: ProviderName
triggerOperator: gt
kind: Scheduled
id: ebd1bf8d-aa18-4e66-9cad-555b71a290f1
incidentConfiguration:
createIncident: true
groupingConfiguration:
lookbackDuration: 5h
enabled: false
matchingMethod: AllEntities
reopenClosedIncident: false
requiredDataConnectors:
- connectorId: CyfirmaCompromisedAccountsDataConnector
dataTypes:
- CyfirmaCompromisedAccounts_CL
version: 1.0.0
name: CYFIRMA - Customer Accounts Leaks Detection Rule
eventGroupingSettings:
aggregationKind: AlertPerResult
tactics:
- CredentialAccess
- InitialAccess
description: |
"Detects recent leaks of customer account credentials based on CYFIRMA's threat intelligence.
This rule surfaces the latest credential exposures, including email, username, and breach metadata.
It enables security teams to quickly identify and investigate leaked customer data from third-party breaches, dark web listings, or public repositories."
query: |
// Customer Accounts Leaks - Latest per UID
let timeFrame = 5m;
CyfirmaCompromisedAccounts_CL
| where TimeGenerated between (ago(timeFrame) .. now())
and Category has "Customer Accounts Leaks"
| extend
ProviderName = 'CYFIRMA',
ProductName = 'DeCYFIR/DeTCT'
| summarize arg_max(TimeGenerated,
user_name,
email,
url,
password,
breach_date,
first_seen,
last_seen,
impact,
recommendations,
description,
source,
ProductName,
ProviderName
) by uid
| sort by TimeGenerated desc
status: Available
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Compromised Accounts/Analytic Rules/CustomerAccountsLeaksRule.yaml
suppressionEnabled: true
{
"$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/ebd1bf8d-aa18-4e66-9cad-555b71a290f1')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/ebd1bf8d-aa18-4e66-9cad-555b71a290f1')]",
"properties": {
"alertDetailsOverride": {
"alertDescriptionFormat": "{{description}}",
"alertDisplayNameFormat": "Customer Leak - {{user_name}} - {{email}}",
"alertDynamicProperties": [
{
"alertProperty": "ProductName",
"value": "ProductName"
},
{
"alertProperty": "ProviderName",
"value": "ProviderName"
}
]
},
"alertRuleTemplateName": "ebd1bf8d-aa18-4e66-9cad-555b71a290f1",
"customDetails": {
"BreachDate": "breach_date",
"Description": "description",
"FirstSeen": "first_seen",
"Impact": "impact",
"LastSeen": "last_seen",
"Recommendations": "recommendations",
"Source": "source",
"TimeGenerated": "TimeGenerated",
"UID": "uid"
},
"description": "\"Detects recent leaks of customer account credentials based on CYFIRMA's threat intelligence.\n This rule surfaces the latest credential exposures, including email, username, and breach metadata.\n It enables security teams to quickly identify and investigate leaked customer data from third-party breaches, dark web listings, or public repositories.\"\n",
"displayName": "CYFIRMA - Customer Accounts Leaks Detection Rule",
"enabled": true,
"entityMappings": [
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "user_name",
"identifier": "Name"
},
{
"columnName": "email",
"identifier": "UPNSuffix"
}
]
},
{
"entityType": "URL",
"fieldMappings": [
{
"columnName": "url",
"identifier": "Url"
}
]
}
],
"eventGroupingSettings": {
"aggregationKind": "AlertPerResult"
},
"incidentConfiguration": {
"createIncident": true,
"groupingConfiguration": {
"enabled": false,
"lookbackDuration": "PT5H",
"matchingMethod": "AllEntities",
"reopenClosedIncident": false
}
},
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Compromised Accounts/Analytic Rules/CustomerAccountsLeaksRule.yaml",
"query": "// Customer Accounts Leaks - Latest per UID\nlet timeFrame = 5m;\nCyfirmaCompromisedAccounts_CL\n| where TimeGenerated between (ago(timeFrame) .. now())\n and Category has \"Customer Accounts Leaks\"\n| extend \n ProviderName = 'CYFIRMA',\n ProductName = 'DeCYFIR/DeTCT'\n| summarize arg_max(TimeGenerated, \n user_name,\n email,\n url,\n password,\n breach_date,\n first_seen,\n last_seen,\n impact,\n recommendations,\n description,\n source,\n ProductName,\n ProviderName\n) by uid\n| sort by TimeGenerated desc\n",
"queryFrequency": "PT5M",
"queryPeriod": "PT5M",
"severity": "High",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT6H",
"suppressionEnabled": true,
"tactics": [
"CredentialAccess",
"InitialAccess"
],
"techniques": [
"T1078",
"T1552"
],
"templateVersion": "1.0.0",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}