AV detections related to Tarrask malware
Id | 1785d372-b9fe-4283-96a6-3a1d83cabfd1 |
Rulename | AV detections related to Tarrask malware |
Description | This query looks for Microsoft Defender AV detections related to Tarrask malware. In Microsoft Sentinel, the SecurityAlerts table includes only the Device Name of the affected device, this query joins the DeviceInfo table to clearly connect other information such as Device group, ip, logged-on users etc. This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available. Reference: https://www.microsoft.com/security/blog/2022/04/12/tarrask-malware-uses-scheduled-tasks-for-defense-evasion/ |
Severity | High |
Tactics | Persistence |
Techniques | T1053 |
Required data connectors | MicrosoftThreatProtection |
Kind | Scheduled |
Query frequency | 1d |
Query period | 1d |
Trigger threshold | 0 |
Trigger operator | gt |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Defender XDR/Analytic Rules/AVTarrask.yaml |
Version | 1.0.4 |
Arm template | 1785d372-b9fe-4283-96a6-3a1d83cabfd1.json |
let Tarrask_threats = dynamic(["HackTool:Win64/Tarrask!MS", "HackTool:Win64/Ligolo!MSR", "Behavior:Win32/ScheduledTaskHide.A", "Tarrask"]);
DeviceInfo
| extend DeviceName = tolower(DeviceName)
| join kind=rightouter ( SecurityAlert
| where ProviderName =~ "MDATP"
| extend ThreatName = tostring(parse_json(ExtendedProperties).ThreatName)
| extend ThreatFamilyName = tostring(parse_json(ExtendedProperties).ThreatFamilyName)
| where ThreatName in~ (Tarrask_threats) or ThreatFamilyName in~ (Tarrask_threats)
| extend CompromisedEntity = tolower(CompromisedEntity)
) on $left.DeviceName == $right.CompromisedEntity
| summarize by DisplayName, ThreatName, ThreatFamilyName, PublicIP, AlertSeverity, Description, tostring(LoggedOnUsers), DeviceId, TenantId , bin(TimeGenerated, 1d), CompromisedEntity, tostring(LoggedOnUsers), ProductName, Entities
| extend HostName = tostring(split(CompromisedEntity, ".")[0]), DomainIndex = toint(indexof(CompromisedEntity, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(CompromisedEntity, DomainIndex + 1), CompromisedEntity)
severity: High
relevantTechniques:
- T1053
queryFrequency: 1d
kind: Scheduled
version: 1.0.4
name: AV detections related to Tarrask malware
triggerOperator: gt
description: |
'This query looks for Microsoft Defender AV detections related to Tarrask malware. In Microsoft Sentinel, the SecurityAlerts table includes only the Device Name of the affected device, this query joins the DeviceInfo table to clearly connect other information such as Device group, ip, logged-on users etc.
This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available.
Reference: https://www.microsoft.com/security/blog/2022/04/12/tarrask-malware-uses-scheduled-tasks-for-defense-evasion/'
queryPeriod: 1d
query: |
let Tarrask_threats = dynamic(["HackTool:Win64/Tarrask!MS", "HackTool:Win64/Ligolo!MSR", "Behavior:Win32/ScheduledTaskHide.A", "Tarrask"]);
DeviceInfo
| extend DeviceName = tolower(DeviceName)
| join kind=rightouter ( SecurityAlert
| where ProviderName =~ "MDATP"
| extend ThreatName = tostring(parse_json(ExtendedProperties).ThreatName)
| extend ThreatFamilyName = tostring(parse_json(ExtendedProperties).ThreatFamilyName)
| where ThreatName in~ (Tarrask_threats) or ThreatFamilyName in~ (Tarrask_threats)
| extend CompromisedEntity = tolower(CompromisedEntity)
) on $left.DeviceName == $right.CompromisedEntity
| summarize by DisplayName, ThreatName, ThreatFamilyName, PublicIP, AlertSeverity, Description, tostring(LoggedOnUsers), DeviceId, TenantId , bin(TimeGenerated, 1d), CompromisedEntity, tostring(LoggedOnUsers), ProductName, Entities
| extend HostName = tostring(split(CompromisedEntity, ".")[0]), DomainIndex = toint(indexof(CompromisedEntity, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(CompromisedEntity, DomainIndex + 1), CompromisedEntity)
entityMappings:
- entityType: Host
fieldMappings:
- columnName: CompromisedEntity
identifier: FullName
- columnName: HostName
identifier: HostName
- columnName: HostNameDomain
identifier: DnsDomain
- entityType: IP
fieldMappings:
- columnName: PublicIP
identifier: Address
tactics:
- Persistence
status: Available
triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Defender XDR/Analytic Rules/AVTarrask.yaml
id: 1785d372-b9fe-4283-96a6-3a1d83cabfd1
requiredDataConnectors:
- dataTypes:
- SecurityAlert
connectorId: MicrosoftThreatProtection
{
"$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/1785d372-b9fe-4283-96a6-3a1d83cabfd1')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/1785d372-b9fe-4283-96a6-3a1d83cabfd1')]",
"properties": {
"alertRuleTemplateName": "1785d372-b9fe-4283-96a6-3a1d83cabfd1",
"customDetails": null,
"description": "'This query looks for Microsoft Defender AV detections related to Tarrask malware. In Microsoft Sentinel, the SecurityAlerts table includes only the Device Name of the affected device, this query joins the DeviceInfo table to clearly connect other information such as Device group, ip, logged-on users etc. \n This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available.\n Reference: https://www.microsoft.com/security/blog/2022/04/12/tarrask-malware-uses-scheduled-tasks-for-defense-evasion/'\n",
"displayName": "AV detections related to Tarrask malware",
"enabled": true,
"entityMappings": [
{
"entityType": "Host",
"fieldMappings": [
{
"columnName": "CompromisedEntity",
"identifier": "FullName"
},
{
"columnName": "HostName",
"identifier": "HostName"
},
{
"columnName": "HostNameDomain",
"identifier": "DnsDomain"
}
]
},
{
"entityType": "IP",
"fieldMappings": [
{
"columnName": "PublicIP",
"identifier": "Address"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Defender XDR/Analytic Rules/AVTarrask.yaml",
"query": "let Tarrask_threats = dynamic([\"HackTool:Win64/Tarrask!MS\", \"HackTool:Win64/Ligolo!MSR\", \"Behavior:Win32/ScheduledTaskHide.A\", \"Tarrask\"]);\nDeviceInfo\n| extend DeviceName = tolower(DeviceName)\n| join kind=rightouter ( SecurityAlert\n| where ProviderName =~ \"MDATP\"\n| extend ThreatName = tostring(parse_json(ExtendedProperties).ThreatName)\n| extend ThreatFamilyName = tostring(parse_json(ExtendedProperties).ThreatFamilyName)\n| where ThreatName in~ (Tarrask_threats) or ThreatFamilyName in~ (Tarrask_threats)\n| extend CompromisedEntity = tolower(CompromisedEntity)\n) on $left.DeviceName == $right.CompromisedEntity\n| summarize by DisplayName, ThreatName, ThreatFamilyName, PublicIP, AlertSeverity, Description, tostring(LoggedOnUsers), DeviceId, TenantId , bin(TimeGenerated, 1d), CompromisedEntity, tostring(LoggedOnUsers), ProductName, Entities\n| extend HostName = tostring(split(CompromisedEntity, \".\")[0]), DomainIndex = toint(indexof(CompromisedEntity, '.'))\n| extend HostNameDomain = iff(DomainIndex != -1, substring(CompromisedEntity, DomainIndex + 1), CompromisedEntity)\n",
"queryFrequency": "P1D",
"queryPeriod": "P1D",
"severity": "High",
"status": "Available",
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Persistence"
],
"techniques": [
"T1053"
],
"templateVersion": "1.0.4",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}