Aqua Blizzard AV hits - Feb 2022
| Id | 18dbdc22-b69f-4109-9e39-723d9465f45f |
| Rulename | Aqua Blizzard AV hits - Feb 2022 |
| Description | Identifies a match in the Security Alert table for MDATP hits related to the Aqua Blizzard actor |
| Severity | High |
| Tactics | Persistence |
| Techniques | T1137 |
| Required data connectors | MicrosoftDefenderAdvancedThreatProtection |
| Kind | Scheduled |
| Query frequency | 6h |
| Query period | 6h |
| Trigger threshold | 0 |
| Trigger operator | gt |
| Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/MicrosoftDefenderForEndpoint/Analytic Rules/AquaBlizzardAVHits.yaml |
| Version | 1.0.2 |
| Arm template | 18dbdc22-b69f-4109-9e39-723d9465f45f.json |
let iocs = externaldata(DateAdded:string,IoC:string,Type:string) [@"https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Sample%20Data/Feeds/ActiniumIOC.csv"] with (format="csv", ignoreFirstRecord=True);
let AVHits = (iocs | where Type =~ "AVDetection"| project IoC);
SecurityAlert
| where ProviderName == 'MDATP'
| extend ThreatName_ = tostring(parse_json(ExtendedProperties).ThreatName)
| where ThreatName_ has_any (AVHits)
| extend Directory = tostring(parse_json(Entities)[0].Directory), SHA256 = tostring(parse_json(tostring(parse_json(Entities)[0].FileHashes))[2].Value), FileName = tostring(parse_json(Entities)[0].Name), Hostname = tostring(parse_json(Entities)[6].FQDN)| extend AccountName = tostring(parse_json(tostring(parse_json(Entities)[6].LoggedOnUsers))[0].AccountName)
| project TimeGenerated, AlertName, ThreatName_, ProviderName, AlertSeverity, Description, RemediationSteps, ExtendedProperties, Entities, FileName,SHA256, Directory, Hostname, AccountName
| extend FileHash = SHA256, FileHashType = "SHA256"
| extend Name = tostring(split(AccountName, "@")[0]), AccountUPNSuffix = tostring(split(AccountName, "@")[1])
| extend Host = tostring(split(Hostname, ".")[0]), DomainIndex = toint(indexof(Hostname, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(Hostname, DomainIndex + 1), Hostname)
kind: Scheduled
relevantTechniques:
- T1137
description: |
'Identifies a match in the Security Alert table for MDATP hits related to the Aqua Blizzard actor'
queryPeriod: 6h
queryFrequency: 6h
tactics:
- Persistence
name: Aqua Blizzard AV hits - Feb 2022
requiredDataConnectors:
- connectorId: MicrosoftDefenderAdvancedThreatProtection
dataTypes:
- SecurityAlert (MDATP)
entityMappings:
- entityType: Account
fieldMappings:
- identifier: FullName
columnName: AccountName
- identifier: Name
columnName: Name
- identifier: UPNSuffix
columnName: AccountUPNSuffix
- entityType: Host
fieldMappings:
- identifier: FullName
columnName: Hostname
- identifier: HostName
columnName: Name
- identifier: NTDomain
columnName: HostNameDomain
- entityType: FileHash
fieldMappings:
- identifier: Algorithm
columnName: FileHashType
- identifier: Value
columnName: FileHash
triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/MicrosoftDefenderForEndpoint/Analytic Rules/AquaBlizzardAVHits.yaml
version: 1.0.2
id: 18dbdc22-b69f-4109-9e39-723d9465f45f
query: |
let iocs = externaldata(DateAdded:string,IoC:string,Type:string) [@"https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Sample%20Data/Feeds/ActiniumIOC.csv"] with (format="csv", ignoreFirstRecord=True);
let AVHits = (iocs | where Type =~ "AVDetection"| project IoC);
SecurityAlert
| where ProviderName == 'MDATP'
| extend ThreatName_ = tostring(parse_json(ExtendedProperties).ThreatName)
| where ThreatName_ has_any (AVHits)
| extend Directory = tostring(parse_json(Entities)[0].Directory), SHA256 = tostring(parse_json(tostring(parse_json(Entities)[0].FileHashes))[2].Value), FileName = tostring(parse_json(Entities)[0].Name), Hostname = tostring(parse_json(Entities)[6].FQDN)| extend AccountName = tostring(parse_json(tostring(parse_json(Entities)[6].LoggedOnUsers))[0].AccountName)
| project TimeGenerated, AlertName, ThreatName_, ProviderName, AlertSeverity, Description, RemediationSteps, ExtendedProperties, Entities, FileName,SHA256, Directory, Hostname, AccountName
| extend FileHash = SHA256, FileHashType = "SHA256"
| extend Name = tostring(split(AccountName, "@")[0]), AccountUPNSuffix = tostring(split(AccountName, "@")[1])
| extend Host = tostring(split(Hostname, ".")[0]), DomainIndex = toint(indexof(Hostname, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(Hostname, DomainIndex + 1), Hostname)
status: Available
triggerOperator: gt
tags:
- Aqua Blizzard
severity: High
{
"$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/18dbdc22-b69f-4109-9e39-723d9465f45f')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/18dbdc22-b69f-4109-9e39-723d9465f45f')]",
"properties": {
"alertRuleTemplateName": "18dbdc22-b69f-4109-9e39-723d9465f45f",
"customDetails": null,
"description": "'Identifies a match in the Security Alert table for MDATP hits related to the Aqua Blizzard actor'\n",
"displayName": "Aqua Blizzard AV hits - Feb 2022",
"enabled": true,
"entityMappings": [
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "AccountName",
"identifier": "FullName"
},
{
"columnName": "Name",
"identifier": "Name"
},
{
"columnName": "AccountUPNSuffix",
"identifier": "UPNSuffix"
}
]
},
{
"entityType": "Host",
"fieldMappings": [
{
"columnName": "Hostname",
"identifier": "FullName"
},
{
"columnName": "Name",
"identifier": "HostName"
},
{
"columnName": "HostNameDomain",
"identifier": "NTDomain"
}
]
},
{
"entityType": "FileHash",
"fieldMappings": [
{
"columnName": "FileHashType",
"identifier": "Algorithm"
},
{
"columnName": "FileHash",
"identifier": "Value"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/MicrosoftDefenderForEndpoint/Analytic Rules/AquaBlizzardAVHits.yaml",
"query": "let iocs = externaldata(DateAdded:string,IoC:string,Type:string) [@\"https://raw.githubusercontent.com/Azure/Azure-Sentinel/master/Sample%20Data/Feeds/ActiniumIOC.csv\"] with (format=\"csv\", ignoreFirstRecord=True);\nlet AVHits = (iocs | where Type =~ \"AVDetection\"| project IoC);\nSecurityAlert\n| where ProviderName == 'MDATP'\n| extend ThreatName_ = tostring(parse_json(ExtendedProperties).ThreatName)\n| where ThreatName_ has_any (AVHits)\n| extend Directory = tostring(parse_json(Entities)[0].Directory), SHA256 = tostring(parse_json(tostring(parse_json(Entities)[0].FileHashes))[2].Value), FileName = tostring(parse_json(Entities)[0].Name), Hostname = tostring(parse_json(Entities)[6].FQDN)| extend AccountName = tostring(parse_json(tostring(parse_json(Entities)[6].LoggedOnUsers))[0].AccountName)\n| project TimeGenerated, AlertName, ThreatName_, ProviderName, AlertSeverity, Description, RemediationSteps, ExtendedProperties, Entities, FileName,SHA256, Directory, Hostname, AccountName\n| extend FileHash = SHA256, FileHashType = \"SHA256\"\n| extend Name = tostring(split(AccountName, \"@\")[0]), AccountUPNSuffix = tostring(split(AccountName, \"@\")[1])\n| extend Host = tostring(split(Hostname, \".\")[0]), DomainIndex = toint(indexof(Hostname, '.'))\n| extend HostNameDomain = iff(DomainIndex != -1, substring(Hostname, DomainIndex + 1), Hostname)\n",
"queryFrequency": "PT6H",
"queryPeriod": "PT6H",
"severity": "High",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Persistence"
],
"tags": [
"Aqua Blizzard"
],
"techniques": [
"T1137"
],
"templateVersion": "1.0.2",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}