Probable AdFind Recon Tool Usage Normalized Process Events
| Id | 45076281-35ae-45e0-b443-c32aa0baf965 |
| Rulename | Probable AdFind Recon Tool Usage (Normalized Process Events) |
| Description | Identifies the host and account that executed AdFind by hash and filename in addition to common and unique flags that are used by many threat actors in discovery. To use this analytics rule, make sure you have deployed the ASIM normalization parsers |
| Severity | High |
| Tactics | Discovery |
| Techniques | T1018 |
| Kind | Scheduled |
| Query frequency | 1h |
| Query period | 1h |
| Trigger threshold | 0 |
| Trigger operator | gt |
| Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Detections/ASimProcess/imProcess_AdFind_Usage.yaml |
| Version | 1.1.6 |
| Arm template | 45076281-35ae-45e0-b443-c32aa0baf965.json |
let args = dynamic(["objectcategory","domainlist","dcmodes","adinfo","trustdmp","computers_pwdnotreqd","Domain Admins", "objectcategory=person", "objectcategory=computer", "objectcategory=*","dclist"]);
let parentProcesses = dynamic(["pwsh.exe","powershell.exe","cmd.exe"]);
imProcessCreate
//looks for execution from a shell
| where ActingProcessName has_any (parentProcesses)
| extend ActingProcessFileName = tostring(split(ActingProcessName, '\\')[-1])
| where ActingProcessFileName in~ (parentProcesses)
// main filter
| where Process hassuffix "AdFind.exe" or TargetProcessSHA256 == "c92c158d7c37fea795114fa6491fe5f145ad2f8c08776b18ae79db811e8e36a3"
// AdFind common Flags to check for from various threat actor TTPs
or CommandLine has_any (args)
| extend AlgorithmType = "SHA256"
| extend AccountName = tostring(split(User, @'\')[1]), AccountNTDomain = tostring(split(User, @'\')[0])
| extend HostName = tostring(split(Dvc, ".")[0]), DomainIndex = toint(indexof(Dvc, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(Dvc, DomainIndex + 1), Dvc)
| project-away DomainIndex
triggerOperator: gt
queryFrequency: 1h
description: |
'Identifies the host and account that executed AdFind by hash and filename in addition to common and unique flags that are used by many threat actors in discovery.
To use this analytics rule, make sure you have deployed the [ASIM normalization parsers](https://aka.ms/ASimProcessEvent)'
version: 1.1.6
kind: Scheduled
triggerThreshold: 0
requiredDataConnectors: []
queryPeriod: 1h
name: Probable AdFind Recon Tool Usage (Normalized Process Events)
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/ASimProcess/imProcess_AdFind_Usage.yaml
id: 45076281-35ae-45e0-b443-c32aa0baf965
tags:
- version: 1.0.0
Id: c63ae777-d5e0-4113-8c9a-c2c9d3d09fcd
- Schema: ASIMProcessEvent
SchemaVersion: 0.1.0
tactics:
- Discovery
metadata:
source:
kind: Community
author:
name: Yuval Naor
categories:
domains:
- Security - Threat Intelligence
support:
tier: Community
relevantTechniques:
- T1018
severity: High
entityMappings:
- fieldMappings:
- identifier: FullName
columnName: User
- identifier: Name
columnName: AccountName
- identifier: NTDomain
columnName: AccountNTDomain
entityType: Account
- fieldMappings:
- identifier: FullName
columnName: Dvc
- identifier: HostName
columnName: HostName
- identifier: DnsDomain
columnName: HostNameDomain
entityType: Host
- fieldMappings:
- identifier: ProcessId
columnName: ActingProcessName
- identifier: CommandLine
columnName: CommandLine
entityType: Process
- fieldMappings:
- identifier: Algorithm
columnName: AlgorithmType
- identifier: Value
columnName: TargetProcessSHA256
entityType: FileHash
query: |
let args = dynamic(["objectcategory","domainlist","dcmodes","adinfo","trustdmp","computers_pwdnotreqd","Domain Admins", "objectcategory=person", "objectcategory=computer", "objectcategory=*","dclist"]);
let parentProcesses = dynamic(["pwsh.exe","powershell.exe","cmd.exe"]);
imProcessCreate
//looks for execution from a shell
| where ActingProcessName has_any (parentProcesses)
| extend ActingProcessFileName = tostring(split(ActingProcessName, '\\')[-1])
| where ActingProcessFileName in~ (parentProcesses)
// main filter
| where Process hassuffix "AdFind.exe" or TargetProcessSHA256 == "c92c158d7c37fea795114fa6491fe5f145ad2f8c08776b18ae79db811e8e36a3"
// AdFind common Flags to check for from various threat actor TTPs
or CommandLine has_any (args)
| extend AlgorithmType = "SHA256"
| extend AccountName = tostring(split(User, @'\')[1]), AccountNTDomain = tostring(split(User, @'\')[0])
| extend HostName = tostring(split(Dvc, ".")[0]), DomainIndex = toint(indexof(Dvc, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(Dvc, DomainIndex + 1), Dvc)
| project-away DomainIndex
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"workspace": {
"type": "String"
}
},
"resources": [
{
"apiVersion": "2023-02-01-preview",
"id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/45076281-35ae-45e0-b443-c32aa0baf965')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/45076281-35ae-45e0-b443-c32aa0baf965')]",
"properties": {
"alertRuleTemplateName": "45076281-35ae-45e0-b443-c32aa0baf965",
"customDetails": null,
"description": "'Identifies the host and account that executed AdFind by hash and filename in addition to common and unique flags that are used by many threat actors in discovery.\nTo use this analytics rule, make sure you have deployed the [ASIM normalization parsers](https://aka.ms/ASimProcessEvent)'\n",
"displayName": "Probable AdFind Recon Tool Usage (Normalized Process Events)",
"enabled": true,
"entityMappings": [
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "User",
"identifier": "FullName"
},
{
"columnName": "AccountName",
"identifier": "Name"
},
{
"columnName": "AccountNTDomain",
"identifier": "NTDomain"
}
]
},
{
"entityType": "Host",
"fieldMappings": [
{
"columnName": "Dvc",
"identifier": "FullName"
},
{
"columnName": "HostName",
"identifier": "HostName"
},
{
"columnName": "HostNameDomain",
"identifier": "DnsDomain"
}
]
},
{
"entityType": "Process",
"fieldMappings": [
{
"columnName": "ActingProcessName",
"identifier": "ProcessId"
},
{
"columnName": "CommandLine",
"identifier": "CommandLine"
}
]
},
{
"entityType": "FileHash",
"fieldMappings": [
{
"columnName": "AlgorithmType",
"identifier": "Algorithm"
},
{
"columnName": "TargetProcessSHA256",
"identifier": "Value"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Detections/ASimProcess/imProcess_AdFind_Usage.yaml",
"query": "let args = dynamic([\"objectcategory\",\"domainlist\",\"dcmodes\",\"adinfo\",\"trustdmp\",\"computers_pwdnotreqd\",\"Domain Admins\", \"objectcategory=person\", \"objectcategory=computer\", \"objectcategory=*\",\"dclist\"]);\nlet parentProcesses = dynamic([\"pwsh.exe\",\"powershell.exe\",\"cmd.exe\"]);\nimProcessCreate\n//looks for execution from a shell\n| where ActingProcessName has_any (parentProcesses)\n| extend ActingProcessFileName = tostring(split(ActingProcessName, '\\\\')[-1])\n| where ActingProcessFileName in~ (parentProcesses)\n// main filter\n| where Process hassuffix \"AdFind.exe\" or TargetProcessSHA256 == \"c92c158d7c37fea795114fa6491fe5f145ad2f8c08776b18ae79db811e8e36a3\"\n// AdFind common Flags to check for from various threat actor TTPs\nor CommandLine has_any (args)\n| extend AlgorithmType = \"SHA256\"\n| extend AccountName = tostring(split(User, @'\\')[1]), AccountNTDomain = tostring(split(User, @'\\')[0])\n| extend HostName = tostring(split(Dvc, \".\")[0]), DomainIndex = toint(indexof(Dvc, '.'))\n| extend HostNameDomain = iff(DomainIndex != -1, substring(Dvc, DomainIndex + 1), Dvc)\n| project-away DomainIndex\n",
"queryFrequency": "PT1H",
"queryPeriod": "PT1H",
"severity": "High",
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Discovery"
],
"tags": [
{
"Id": "c63ae777-d5e0-4113-8c9a-c2c9d3d09fcd",
"version": "1.0.0"
},
{
"Schema": "ASIMProcessEvent",
"SchemaVersion": "0.1.0"
}
],
"techniques": [
"T1018"
],
"templateVersion": "1.1.6",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}