Java Executing cmd to run Powershell

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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 Defender XDR/Analytic Rules/Campaign/Sysrv-botnet/MaliciousCMDExecutionByJava.yaml
Version	1.0.0
Arm template	2c81c0a0-9823-4a14-b21a-2b4acd3335d2.json

KQL

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), "")

YAML

tactics:
- Execution
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Defender XDR/Analytic Rules/Campaign/Sysrv-botnet/MaliciousCMDExecutionByJava.yaml
id: 2c81c0a0-9823-4a14-b21a-2b4acd3335d2
tags:
- Sysrv
- Botnet
name: Java Executing cmd to run Powershell
queryPeriod: 1h
triggerOperator: gt
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: DeviceName
  - identifier: HostName
    columnName: HostName
  - identifier: DnsDomain
    columnName: DnsDomain
  entityType: Host
kind: Scheduled
severity: High
version: 1.0.0
status: Available
relevantTechniques:
- T1059
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.  
triggerThreshold: 0
requiredDataConnectors:
- connectorId: MicrosoftThreatProtection
  dataTypes:
  - DeviceProcessEvents
queryFrequency: 1h
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), "")

ARM