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SlackAudit - Public link created for file which can contain sensitive information.

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Id279316e8-8965-47d2-9788-b94dc352c853
RulenameSlackAudit - Public link created for file which can contain sensitive information.
DescriptionDetects public links for files which potentialy may contain sensitive data such as passwords, authentication tokens, secret keys.
SeverityMedium
TacticsExfiltration
TechniquesT1048
Required data connectorsSlackAuditAPI
KindScheduled
Query frequency1h
Query period1h
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SlackAudit/Analytic Rules/SlackAuditSensitiveFile.yaml
Version1.0.0
Arm template279316e8-8965-47d2-9788-b94dc352c853.json
Deploy To Azure
SlackAudit
| where Action =~ 'file_public_link_created'
| where EntityFileName == 'id_rsa' or EntityFileName contains 'password' or EntityFileName contains 'key' or EntityFileName contains '_key' or EntityFileName contains '.ssh' or EntityFileName endswith '.npmrc' or EntityFileName endswith '.muttrc' or EntityFileName contains 'config.json' or EntityFileName contains '.gitconfig' or EntityFileName endswith '.netrc' or EntityFileName endswith 'package.json' or EntityFileName endswith 'Gemfile' or EntityFileName endswith 'bower.json' or EntityFileName endswith 'config.gypi' or EntityFileName endswith 'travis.yml'
| extend AccountCustomEntity = SrcUserName
| extend IPCustomEntity = SrcIpAddr
version: 1.0.0
status: Available
queryFrequency: 1h
requiredDataConnectors:
- connectorId: SlackAuditAPI
  dataTypes:
  - SlackAudit_CL
entityMappings:
- fieldMappings:
  - columnName: AccountCustomEntity
    identifier: FullName
  entityType: Account
- fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
  entityType: IP
kind: Scheduled
queryPeriod: 1h
severity: Medium
query: |
  SlackAudit
  | where Action =~ 'file_public_link_created'
  | where EntityFileName == 'id_rsa' or EntityFileName contains 'password' or EntityFileName contains 'key' or EntityFileName contains '_key' or EntityFileName contains '.ssh' or EntityFileName endswith '.npmrc' or EntityFileName endswith '.muttrc' or EntityFileName contains 'config.json' or EntityFileName contains '.gitconfig' or EntityFileName endswith '.netrc' or EntityFileName endswith 'package.json' or EntityFileName endswith 'Gemfile' or EntityFileName endswith 'bower.json' or EntityFileName endswith 'config.gypi' or EntityFileName endswith 'travis.yml'
  | extend AccountCustomEntity = SrcUserName
  | extend IPCustomEntity = SrcIpAddr  
triggerOperator: gt
id: 279316e8-8965-47d2-9788-b94dc352c853
description: |
    'Detects public links for files which potentialy may contain sensitive data such as passwords, authentication tokens, secret keys.'
triggerThreshold: 0
name: SlackAudit - Public link created for file which can contain sensitive information.
relevantTechniques:
- T1048
tactics:
- Exfiltration
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SlackAudit/Analytic Rules/SlackAuditSensitiveFile.yaml
{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/279316e8-8965-47d2-9788-b94dc352c853')]",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/279316e8-8965-47d2-9788-b94dc352c853')]",
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
      "kind": "Scheduled",
      "apiVersion": "2022-11-01",
      "properties": {
        "displayName": "SlackAudit - Public link created for file which can contain sensitive information.",
        "description": "'Detects public links for files which potentialy may contain sensitive data such as passwords, authentication tokens, secret keys.'\n",
        "severity": "Medium",
        "enabled": true,
        "query": "SlackAudit\n| where Action =~ 'file_public_link_created'\n| where EntityFileName == 'id_rsa' or EntityFileName contains 'password' or EntityFileName contains 'key' or EntityFileName contains '_key' or EntityFileName contains '.ssh' or EntityFileName endswith '.npmrc' or EntityFileName endswith '.muttrc' or EntityFileName contains 'config.json' or EntityFileName contains '.gitconfig' or EntityFileName endswith '.netrc' or EntityFileName endswith 'package.json' or EntityFileName endswith 'Gemfile' or EntityFileName endswith 'bower.json' or EntityFileName endswith 'config.gypi' or EntityFileName endswith 'travis.yml'\n| extend AccountCustomEntity = SrcUserName\n| extend IPCustomEntity = SrcIpAddr\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0,
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Exfiltration"
        ],
        "techniques": [
          "T1048"
        ],
        "alertRuleTemplateName": "279316e8-8965-47d2-9788-b94dc352c853",
        "customDetails": null,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "identifier": "FullName",
                "columnName": "AccountCustomEntity"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "identifier": "Address",
                "columnName": "IPCustomEntity"
              }
            ]
          }
        ],
        "status": "Available",
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SlackAudit/Analytic Rules/SlackAuditSensitiveFile.yaml",
        "templateVersion": "1.0.0"
      }
    }
  ]
}