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
severity: High
relevantTechniques:
- T1018
queryFrequency: 1h
kind: Scheduled
version: 1.1.6
metadata:
support:
tier: Community
categories:
domains:
- Security - Threat Intelligence
author:
name: Yuval Naor
source:
kind: Community
name: Probable AdFind Recon Tool Usage (Normalized Process Events)
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)'
queryPeriod: 1h
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
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
tactics:
- Discovery
tags:
- Id: c63ae777-d5e0-4113-8c9a-c2c9d3d09fcd
version: 1.0.0
- Schema: ASIMProcessEvent
SchemaVersion: 0.1.0
triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/ASimProcess/imProcess_AdFind_Usage.yaml
id: 45076281-35ae-45e0-b443-c32aa0baf965
requiredDataConnectors: []
{
"$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"
}
]
}