Tomcat - Known malicious user agent | Microsoft Sentinel Analytic Rules

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Id	5e77a818-5825-4ff6-a901-80891c4774d1
Rulename	Tomcat - Known malicious user agent
Description	Detects known malicious user agents
Severity	High
Tactics	InitialAccess
Techniques	T1190 T1133
Required data connectors	CustomLogsAma
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/Tomcat/Analytic%20Rules/TomcatKnownMaliciousUserAgent.yaml
Version	1.0.2
Arm template	5e77a818-5825-4ff6-a901-80891c4774d1.json

KQL

let malicious_ua = dynamic(['Nikto', 'hydra', '.nasl', 'absinthe', 'advanced email extractor', 'arachni', 'autogetcontent', 'bilbo', 'BFAC', 'brutus', 'brutus/aet', 'bsqlbf', 'cgichk', 'cisco-torch', 'commix', 'core-project', 'crimscanner', 'datacha0s', 'dirbuster', 'domino hunter', 'dotdotpwn', 'email extractor', 'fhscan core', 'floodgate', 'get-minimal', 'gootkit auto-rooter scanner', 'grabber', 'grendel-scan', 'havij', 'inspath', 'internet ninja', 'jaascois', 'zmeu', 'masscan', 'metis', 'morfeus', 'mysqloit', 'n-stealth', 'nessus', 'netsparker', 'nmap nse', 'nmap scripting engine', 'nmap-nse', 'nsauditor', 'openvas', 'pangolin', 'paros', 'pmafind', 'prog.customcrawler', 'qualys was', 's.t.a.l.k.e.r.', 'security scan', 'springenwerk', 'sql power injector', 'sqlmap', 'sqlninja', 'teh forest lobster', 'this is an exploit', 'toata dragostea', 'toata dragostea mea pentru diavola', 'uil2pn', 'vega', 'voideye', 'w3af.sf.net', 'w3af.sourceforge.net', 'w3af.org', 'webbandit', 'webinspect', 'webshag', 'webtrends security analyzer', 'webvulnscan', 'whatweb', 'whcc', 'wordpress hash grabber', 'xmlrpc exploit', 'WPScan', 'XSpider', 'SF/', 'FooBar/42', 'ScanAlert', 'Webscanner', 'Webster', 'fantomCrew', 'fantomBrowser', 'visvo', 'magereport', 'ltx71', 'websiteprotection', 'BigCliqueBOT', 'BOT for JCE']);
TomcatEvent
| where HttpUserAgentOriginal has_any (malicious_ua)
| extend MalwareCustomEntity = HttpUserAgentOriginal

YAML

queryPeriod: 1h
status: Available
kind: Scheduled
description: |
  'Detects known malicious user agents'
queryFrequency: 1h
version: 1.0.2
id: 5e77a818-5825-4ff6-a901-80891c4774d1
entityMappings:
- fieldMappings:
  - columnName: MalwareCustomEntity
    identifier: Name
  entityType: Malware
relevantTechniques:
- T1190
- T1133
triggerThreshold: 0
tactics:
- InitialAccess
requiredDataConnectors:
- connectorId: CustomLogsAma
  datatypes:
  - Tomcat_CL
query: |
  let malicious_ua = dynamic(['Nikto', 'hydra', '.nasl', 'absinthe', 'advanced email extractor', 'arachni', 'autogetcontent', 'bilbo', 'BFAC', 'brutus', 'brutus/aet', 'bsqlbf', 'cgichk', 'cisco-torch', 'commix', 'core-project', 'crimscanner', 'datacha0s', 'dirbuster', 'domino hunter', 'dotdotpwn', 'email extractor', 'fhscan core', 'floodgate', 'get-minimal', 'gootkit auto-rooter scanner', 'grabber', 'grendel-scan', 'havij', 'inspath', 'internet ninja', 'jaascois', 'zmeu', 'masscan', 'metis', 'morfeus', 'mysqloit', 'n-stealth', 'nessus', 'netsparker', 'nmap nse', 'nmap scripting engine', 'nmap-nse', 'nsauditor', 'openvas', 'pangolin', 'paros', 'pmafind', 'prog.customcrawler', 'qualys was', 's.t.a.l.k.e.r.', 'security scan', 'springenwerk', 'sql power injector', 'sqlmap', 'sqlninja', 'teh forest lobster', 'this is an exploit', 'toata dragostea', 'toata dragostea mea pentru diavola', 'uil2pn', 'vega', 'voideye', 'w3af.sf.net', 'w3af.sourceforge.net', 'w3af.org', 'webbandit', 'webinspect', 'webshag', 'webtrends security analyzer', 'webvulnscan', 'whatweb', 'whcc', 'wordpress hash grabber', 'xmlrpc exploit', 'WPScan', 'XSpider', 'SF/', 'FooBar/42', 'ScanAlert', 'Webscanner', 'Webster', 'fantomCrew', 'fantomBrowser', 'visvo', 'magereport', 'ltx71', 'websiteprotection', 'BigCliqueBOT', 'BOT for JCE']);
  TomcatEvent
  | where HttpUserAgentOriginal has_any (malicious_ua)
  | extend MalwareCustomEntity = HttpUserAgentOriginal
severity: High
triggerOperator: gt
name: Tomcat - Known malicious user agent
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Tomcat/Analytic%20Rules/TomcatKnownMaliciousUserAgent.yaml

ARM

{
  "$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/5e77a818-5825-4ff6-a901-80891c4774d1')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/5e77a818-5825-4ff6-a901-80891c4774d1')]",
      "properties": {
        "alertRuleTemplateName": "5e77a818-5825-4ff6-a901-80891c4774d1",
        "customDetails": null,
        "description": "'Detects known malicious user agents'\n",
        "displayName": "Tomcat - Known malicious user agent",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Malware",
            "fieldMappings": [
              {
                "columnName": "MalwareCustomEntity",
                "identifier": "Name"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Tomcat/Analytic%20Rules/TomcatKnownMaliciousUserAgent.yaml",
        "query": "let malicious_ua = dynamic(['Nikto', 'hydra', '.nasl', 'absinthe', 'advanced email extractor', 'arachni', 'autogetcontent', 'bilbo', 'BFAC', 'brutus', 'brutus/aet', 'bsqlbf', 'cgichk', 'cisco-torch', 'commix', 'core-project', 'crimscanner', 'datacha0s', 'dirbuster', 'domino hunter', 'dotdotpwn', 'email extractor', 'fhscan core', 'floodgate', 'get-minimal', 'gootkit auto-rooter scanner', 'grabber', 'grendel-scan', 'havij', 'inspath', 'internet ninja', 'jaascois', 'zmeu', 'masscan', 'metis', 'morfeus', 'mysqloit', 'n-stealth', 'nessus', 'netsparker', 'nmap nse', 'nmap scripting engine', 'nmap-nse', 'nsauditor', 'openvas', 'pangolin', 'paros', 'pmafind', 'prog.customcrawler', 'qualys was', 's.t.a.l.k.e.r.', 'security scan', 'springenwerk', 'sql power injector', 'sqlmap', 'sqlninja', 'teh forest lobster', 'this is an exploit', 'toata dragostea', 'toata dragostea mea pentru diavola', 'uil2pn', 'vega', 'voideye', 'w3af.sf.net', 'w3af.sourceforge.net', 'w3af.org', 'webbandit', 'webinspect', 'webshag', 'webtrends security analyzer', 'webvulnscan', 'whatweb', 'whcc', 'wordpress hash grabber', 'xmlrpc exploit', 'WPScan', 'XSpider', 'SF/', 'FooBar/42', 'ScanAlert', 'Webscanner', 'Webster', 'fantomCrew', 'fantomBrowser', 'visvo', 'magereport', 'ltx71', 'websiteprotection', 'BigCliqueBOT', 'BOT for JCE']);\nTomcatEvent\n| where HttpUserAgentOriginal has_any (malicious_ua)\n| extend MalwareCustomEntity = HttpUserAgentOriginal\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1133",
          "T1190"
        ],
        "templateVersion": "1.0.2",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}