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
severity: Medium
queryFrequency: 1h
relevantTechniques:
- T1048
tactics:
- Exfiltration
kind: Scheduled
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
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SlackAudit/Analytic Rules/SlackAuditSensitiveFile.yaml
queryPeriod: 1h
status: Available
version: 1.0.0
name: SlackAudit - Public link created for file which can contain sensitive information.
requiredDataConnectors:
- dataTypes:
- SlackAudit_CL
connectorId: SlackAuditAPI
triggerOperator: gt
entityMappings:
- entityType: Account
fieldMappings:
- identifier: FullName
columnName: AccountCustomEntity
- entityType: IP
fieldMappings:
- identifier: Address
columnName: IPCustomEntity
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
{
"$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-preview",
"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": [
{
"fieldMappings": [
{
"columnName": "AccountCustomEntity",
"identifier": "FullName"
}
],
"entityType": "Account"
},
{
"fieldMappings": [
{
"columnName": "IPCustomEntity",
"identifier": "Address"
}
],
"entityType": "IP"
}
],
"templateVersion": "1.0.0",
"status": "Available",
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/SlackAudit/Analytic Rules/SlackAuditSensitiveFile.yaml"
}
}
]
}