Cisco WSA - Multiple infected files
Id | 93186e3d-5dc2-4a00-a993-fa1448db8734 |
Rulename | Cisco WSA - Multiple infected files |
Description | Detects multiple infected files on same source. |
Severity | High |
Tactics | InitialAccess |
Techniques | T1189 |
Required data connectors | CiscoWSA SyslogAma |
Kind | Scheduled |
Query frequency | 1h |
Query period | 1h |
Trigger threshold | 0 |
Trigger operator | gt |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoWSA/Analytic Rules/CiscoWSAMultipleInfectedFiles.yaml |
Version | 1.0.2 |
Arm template | 93186e3d-5dc2-4a00-a993-fa1448db8734.json |
CiscoWSAEvent
| where isnotempty(AmpFileName)
| where isnotempty(ThreatName)
| summarize count() by SrcIpAddr, SrcUserName, bin(TimeGenerated, 15m)
| where count_ > 1
| extend IPCustomEntity = SrcIpAddr, AccountCustomEntity = SrcUserName
queryPeriod: 1h
version: 1.0.2
tactics:
- InitialAccess
queryFrequency: 1h
id: 93186e3d-5dc2-4a00-a993-fa1448db8734
triggerOperator: gt
requiredDataConnectors:
- dataTypes:
- CiscoWSAEvent
connectorId: CiscoWSA
- datatypes:
- Syslog
connectorId: SyslogAma
severity: High
entityMappings:
- entityType: IP
fieldMappings:
- columnName: IPCustomEntity
identifier: Address
- entityType: Account
fieldMappings:
- columnName: AccountCustomEntity
identifier: Name
triggerThreshold: 0
relevantTechniques:
- T1189
query: |
CiscoWSAEvent
| where isnotempty(AmpFileName)
| where isnotempty(ThreatName)
| summarize count() by SrcIpAddr, SrcUserName, bin(TimeGenerated, 15m)
| where count_ > 1
| extend IPCustomEntity = SrcIpAddr, AccountCustomEntity = SrcUserName
kind: Scheduled
name: Cisco WSA - Multiple infected files
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoWSA/Analytic Rules/CiscoWSAMultipleInfectedFiles.yaml
description: |
'Detects multiple infected files on same source.'
status: Available
{
"$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/93186e3d-5dc2-4a00-a993-fa1448db8734')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/93186e3d-5dc2-4a00-a993-fa1448db8734')]",
"properties": {
"alertRuleTemplateName": "93186e3d-5dc2-4a00-a993-fa1448db8734",
"customDetails": null,
"description": "'Detects multiple infected files on same source.'\n",
"displayName": "Cisco WSA - Multiple infected files",
"enabled": true,
"entityMappings": [
{
"entityType": "IP",
"fieldMappings": [
{
"columnName": "IPCustomEntity",
"identifier": "Address"
}
]
},
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "AccountCustomEntity",
"identifier": "Name"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/CiscoWSA/Analytic Rules/CiscoWSAMultipleInfectedFiles.yaml",
"query": "CiscoWSAEvent\n| where isnotempty(AmpFileName)\n| where isnotempty(ThreatName)\n| summarize count() by SrcIpAddr, SrcUserName, bin(TimeGenerated, 15m)\n| where count_ > 1\n| extend IPCustomEntity = SrcIpAddr, AccountCustomEntity = SrcUserName\n",
"queryFrequency": "PT1H",
"queryPeriod": "PT1H",
"severity": "High",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"InitialAccess"
],
"techniques": [
"T1189"
],
"templateVersion": "1.0.2",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}