title: Powershell Detect Virtualization Environment
id: d93129cd-1ee0-479f-bc03-ca6f129882e3
status: test
description: |
    Adversaries may employ various system checks to detect and avoid virtualization and analysis environments.
    This may include changing behaviors based on the results of checks for the presence of artifacts indicative of a virtual machine environment (VME) or sandbox
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1497.001/T1497.001.md
    - https://techgenix.com/malicious-powershell-scripts-evade-detection/
author: frack113, Duc.Le-GTSC
date: 2021-08-03
modified: 2022-03-03
tags:
    - attack.discovery
    - attack.stealth
    - attack.t1497.001
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_action:
        ScriptBlockText|contains:
            - Get-WmiObject
            - gwmi
    selection_module:
        ScriptBlockText|contains:
            - MSAcpi_ThermalZoneTemperature
            - Win32_ComputerSystem
    condition: all of selection*
falsepositives:
    - Unknown
level: medium

title: Potentially Suspicious Usage Of Qemu
id: 5fc297ae-25b6-488a-8f25-cc12ac29b744
status: test
description: |
    Detects potentially suspicious execution of the Qemu utility in a Windows environment.
    Threat actors have leveraged this utility and this technique for achieving network access as reported by Kaspersky.
references:
    - https://securelist.com/network-tunneling-with-qemu/111803/
    - https://www.qemu.org/docs/master/system/invocation.html#hxtool-5
author: Muhammad Faisal (@faisalusuf), Hunter Juhan (@threatHNTR)
date: 2024-06-03
tags:
    - attack.command-and-control
    - attack.t1090
    - attack.t1572
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains:
            - '-m 1M' # VM with just 1MB of ram is insufficient this is a suspicious flag
            - '-m 2M'
            - '-m 3M'
        CommandLine|contains|all:
            - 'restrict=off'
            - '-netdev '
            - 'connect='
            - '-nographic' # This is also a key detection no one invoke without UI from console usually its a flag.
    filter_main_normal_usecase:
        CommandLine|contains:
            - ' -cdrom ' # Normal usage cases
            - ' type=virt '
            - ' -blockdev '
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Unknown
level: medium