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
entityMappings:
- fieldMappings:
- columnName: User
identifier: FullName
- columnName: AccountName
identifier: Name
- columnName: AccountNTDomain
identifier: NTDomain
entityType: Account
- fieldMappings:
- columnName: Dvc
identifier: FullName
- columnName: HostName
identifier: HostName
- columnName: HostNameDomain
identifier: DnsDomain
entityType: Host
- fieldMappings:
- columnName: ActingProcessName
identifier: ProcessId
- columnName: CommandLine
identifier: CommandLine
entityType: Process
- fieldMappings:
- columnName: AlgorithmType
identifier: Algorithm
- columnName: TargetProcessSHA256
identifier: Value
entityType: FileHash
triggerThreshold: 0
severity: High
queryFrequency: 1h
queryPeriod: 1h
relevantTechniques:
- T1018
triggerOperator: gt
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)'
id: 45076281-35ae-45e0-b443-c32aa0baf965
requiredDataConnectors: []
version: 1.1.6
name: Probable AdFind Recon Tool Usage (Normalized Process Events)
metadata:
categories:
domains:
- Security - Threat Intelligence
author:
name: Yuval Naor
support:
tier: Community
source:
kind: Community
tags:
- version: 1.0.0
Id: c63ae777-d5e0-4113-8c9a-c2c9d3d09fcd
- Schema: ASIMProcessEvent
SchemaVersion: 0.1.0
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
tactics:
- Discovery
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/ASimProcess/imProcess_AdFind_Usage.yaml
kind: Scheduled
{
"$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/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",
"subTechniques": [],
"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"
}
]
}