Analytic rule catalog
Java Executing cmd to run Powershell
Back
| Id | 2c81c0a0-9823-4a14-b21a-2b4acd3335d2 |
| Rulename | Java Executing cmd to run Powershell |
| Description | This query was originally published in the threat analytics report, Sysrv botnet evolution. Sysrv is a Go-based botnet that targets both Windows and Linux servers, and steals resources to mine cryptocurrency. The following query finds instances of the Java process being used to execute cmd.exe, and download and execute a PowerShell script. |
| Severity | High |
| Tactics | Execution |
| Techniques | T1059 |
| Required data connectors | MicrosoftThreatProtection |
| Kind | Scheduled |
| Query frequency | 1h |
| Query period | 1h |
| Trigger threshold | 0 |
| Trigger operator | gt |
| Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft%20Defender%20XDR/Analytic%20Rules/Campaign/Sysrv-botnet/MaliciousCMDExecutionByJava.yaml |
| Version | 1.0.0 |
| Arm template | 2c81c0a0-9823-4a14-b21a-2b4acd3335d2.json |
DeviceProcessEvents
| where InitiatingProcessFileName == 'java.exe' and FileName == 'cmd.exe'
and ProcessCommandLine has_all('powershell iex','DownloadString')
| extend HostName = iff(DeviceName has '.', substring(DeviceName, 0, indexof(DeviceName, '.')), DeviceName)
| extend DnsDomain = iff(DeviceName has '.', substring(DeviceName, indexof(DeviceName, '.') + 1), "")
id: 2c81c0a0-9823-4a14-b21a-2b4acd3335d2
severity: High
queryPeriod: 1h
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft%20Defender%20XDR/Analytic%20Rules/Campaign/Sysrv-botnet/MaliciousCMDExecutionByJava.yaml
kind: Scheduled
requiredDataConnectors:
- dataTypes:
- DeviceProcessEvents
connectorId: MicrosoftThreatProtection
triggerThreshold: 0
tags:
- Sysrv
- Botnet
status: Available
relevantTechniques:
- T1059
entityMappings:
- fieldMappings:
- columnName: DeviceName
identifier: FullName
- columnName: HostName
identifier: HostName
- columnName: DnsDomain
identifier: DnsDomain
entityType: Host
name: Java Executing cmd to run Powershell
query: |
DeviceProcessEvents
| where InitiatingProcessFileName == 'java.exe' and FileName == 'cmd.exe'
and ProcessCommandLine has_all('powershell iex','DownloadString')
| extend HostName = iff(DeviceName has '.', substring(DeviceName, 0, indexof(DeviceName, '.')), DeviceName)
| extend DnsDomain = iff(DeviceName has '.', substring(DeviceName, indexof(DeviceName, '.') + 1), "")
queryFrequency: 1h
version: 1.0.0
description: |
This query was originally published in the threat analytics report, Sysrv botnet evolution.
Sysrv is a Go-based botnet that targets both Windows and Linux servers, and steals resources to mine cryptocurrency.
The following query finds instances of the Java process being used to execute cmd.exe, and download and execute a PowerShell script.
tactics:
- Execution
triggerOperator: gt
{
"$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/2c81c0a0-9823-4a14-b21a-2b4acd3335d2')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/2c81c0a0-9823-4a14-b21a-2b4acd3335d2')]",
"properties": {
"alertRuleTemplateName": "2c81c0a0-9823-4a14-b21a-2b4acd3335d2",
"customDetails": null,
"description": "This query was originally published in the threat analytics report, Sysrv botnet evolution.\nSysrv is a Go-based botnet that targets both Windows and Linux servers, and steals resources to mine cryptocurrency.\nThe following query finds instances of the Java process being used to execute cmd.exe, and download and execute a PowerShell script.\n",
"displayName": "Java Executing cmd to run Powershell",
"enabled": true,
"entityMappings": [
{
"entityType": "Host",
"fieldMappings": [
{
"columnName": "DeviceName",
"identifier": "FullName"
},
{
"columnName": "HostName",
"identifier": "HostName"
},
{
"columnName": "DnsDomain",
"identifier": "DnsDomain"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft%20Defender%20XDR/Analytic%20Rules/Campaign/Sysrv-botnet/MaliciousCMDExecutionByJava.yaml",
"query": "DeviceProcessEvents \n| where InitiatingProcessFileName == 'java.exe' and FileName == 'cmd.exe' \nand ProcessCommandLine has_all('powershell iex','DownloadString')\n| extend HostName = iff(DeviceName has '.', substring(DeviceName, 0, indexof(DeviceName, '.')), DeviceName)\n| extend DnsDomain = iff(DeviceName has '.', substring(DeviceName, indexof(DeviceName, '.') + 1), \"\")\n",
"queryFrequency": "PT1H",
"queryPeriod": "PT1H",
"severity": "High",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Execution"
],
"tags": [
"Sysrv",
"Botnet"
],
"techniques": [
"T1059"
],
"templateVersion": "1.0.0",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}