Imperva - Malicious Client
Id | 2ff35ed4-b26a-4cad-93a6-f67adb00e919 |
Rulename | Imperva - Malicious Client |
Description | Detects connections from known malicious clients. |
Severity | High |
Tactics | InitialAccess |
Techniques | T1190 T1133 |
Required data connectors | ImpervaWAFCloudAPI |
Kind | Scheduled |
Query frequency | 10m |
Query period | 10m |
Trigger threshold | 0 |
Trigger operator | gt |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ImpervaCloudWAF/Analytic Rules/ImpervaMaliciousClient.yaml |
Version | 1.0.1 |
Arm template | 2ff35ed4-b26a-4cad-93a6-f67adb00e919.json |
ImpervaWAFCloud
| where ClientApp in~ ('VulnerabilityScanner', 'DDoSBot', 'ClickBot','CommentSpamBot','HackingTool', 'SpamBot', 'Worm')
| where DvcAction !startswith 'REQ_BLOCKED' or DvcAction !startswith 'REQ_BAD_'
| extend IPCustomEntity = SrcIpAddr, UrlCustomEntity = QueryString
entityMappings:
- entityType: IP
fieldMappings:
- identifier: Address
columnName: IPCustomEntity
- entityType: URL
fieldMappings:
- identifier: Url
columnName: UrlCustomEntity
queryFrequency: 10m
name: Imperva - Malicious Client
kind: Scheduled
tactics:
- InitialAccess
triggerThreshold: 0
query: |
ImpervaWAFCloud
| where ClientApp in~ ('VulnerabilityScanner', 'DDoSBot', 'ClickBot','CommentSpamBot','HackingTool', 'SpamBot', 'Worm')
| where DvcAction !startswith 'REQ_BLOCKED' or DvcAction !startswith 'REQ_BAD_'
| extend IPCustomEntity = SrcIpAddr, UrlCustomEntity = QueryString
relevantTechniques:
- T1190
- T1133
triggerOperator: gt
queryPeriod: 10m
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ImpervaCloudWAF/Analytic Rules/ImpervaMaliciousClient.yaml
severity: High
status: Available
id: 2ff35ed4-b26a-4cad-93a6-f67adb00e919
requiredDataConnectors:
- connectorId: ImpervaWAFCloudAPI
dataTypes:
- ImpervaWAFCloud
version: 1.0.1
description: |
'Detects connections from known malicious clients.'
{
"$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/2ff35ed4-b26a-4cad-93a6-f67adb00e919')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/2ff35ed4-b26a-4cad-93a6-f67adb00e919')]",
"properties": {
"alertRuleTemplateName": "2ff35ed4-b26a-4cad-93a6-f67adb00e919",
"customDetails": null,
"description": "'Detects connections from known malicious clients.'\n",
"displayName": "Imperva - Malicious Client",
"enabled": true,
"entityMappings": [
{
"entityType": "IP",
"fieldMappings": [
{
"columnName": "IPCustomEntity",
"identifier": "Address"
}
]
},
{
"entityType": "URL",
"fieldMappings": [
{
"columnName": "UrlCustomEntity",
"identifier": "Url"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/ImpervaCloudWAF/Analytic Rules/ImpervaMaliciousClient.yaml",
"query": "ImpervaWAFCloud\n| where ClientApp in~ ('VulnerabilityScanner', 'DDoSBot', 'ClickBot','CommentSpamBot','HackingTool', 'SpamBot', 'Worm')\n| where DvcAction !startswith 'REQ_BLOCKED' or DvcAction !startswith 'REQ_BAD_'\n| extend IPCustomEntity = SrcIpAddr, UrlCustomEntity = QueryString\n",
"queryFrequency": "PT10M",
"queryPeriod": "PT10M",
"severity": "High",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"InitialAccess"
],
"techniques": [
"T1133",
"T1190"
],
"templateVersion": "1.0.1",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}