Questions tagged [virtualization]

Virtualization is the creation of a virtual (rather than actual) version of something, such as an operating system, a server, a storage device or network resources.

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Keylogging virtual machine from host

Can a keylogger in a host machine capture keystrokes in virtual OS? I'd like to get into cryptocurrencies but I don't know if my machine (mac) is secure. So I thought I could create a VM for it but I ...
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2 votes
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How can a typical researcher protect against VM escapes?

I read a similar question here on how large companies protect themselves and became intrigued about how this would transfer over to less significant operation (ie security researcher, small company, ...
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When using VirtualBox, is it better to use the VirtualBox encryption or the OS disk encryption?

VirtualBox has an option to encrypt the drive of a VM. When I installed Debian or Ubuntu, I have the option to say that I want the full disk encrypted. I'm thinking that both do pretty much the same ...
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How to store malware for analysis?

I am planning on analysing some malware samples dynamically using a sandbox tool and a target Windows VM. The host (physical machine) runs Ubuntu and in it are the sandbox and target VM. So far I only ...
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RDP to a Virtual Machine where should i do the security Measures

i have a Computer, on which Hyper-V is installed, there i created a Virtual Machine. I want to connect only and directly to the Virtual Machine with Remote-Desktop from outside the Network I have some ...
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If my machine is infected and I run a Virtual Machine inside of it, will the VM also be compromised

I've been researching on virtual machine security and found a lot of articles detailing how an infected VM is isolated (or not) from the host machine. But I couldn't find any answers to the opposite ...
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What is the point of an OS (Win11) requiring a TPM (or vTPM) beyond a layer of DRM?

Windows 11 requiring a TPM of some sort seems more like a DRM preventing me from duplicating a W11 Virtual Machine on multiple systems and distributing it versus any tangible benefit to the end-user. ...
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How to create a safe environment in Windows 10 for high-performance programs?

My friend handed me a .exe file of an old game we want to play together. My laptop has important files, so I do not want to install it immediately. I am still sceptical that he might not know it ...
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How to isolate Windows10 Virtual machine from w10 host (virtualbox) for malware analysis [duplicate]

My goal is to find malware that performs network activities and captures the traffic with Wireshark. I have a Windows 10 laptop host machine and VirtualBox which has virtual Windows 10 machine. I am ...
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2 votes
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Why must a virtual image be secured

Virtual machines and their disk images are simply files residing somewhere. So I supposed this means that, for example, a stopped VM is potentially accessible on a file system. What could an attacker ...
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security measures for proprietary code on a VPS

I've got several C++ and Python scripts containing proprietary algorithms, which are latency-sensitive and hence need to be on a system near the data center serving data to them. While a VPS is ...
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What happens to apps, files, objects in a VM if it gets deleted

Usually, when a file is deleted on your computer, it is simply unlinked. The file data is still stored on your disk, there's just nothing pointing to that spot in the memory, and the OS interprets ...
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Could my Windows 7 VM access my network and perhaps my host internet history or data?

I have a Windows 7 Pro VM running on an Ubuntu 20.04 host. I'm a bit new to VirtualBox and set up the VM but it was too slow to do anything so I took a snapshot and closed it. I think my Ubuntu host ...
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How to make sure my laptop (Ubuntu 20.04) is secure with a Windows 7 VM?

I have an old laptop which is running Ubuntu 20.04 and I am planning to use a virtual machine of Windows 7 Pro (using VirtualBox maybe). As its an old laptop and not my primary source of using the ...
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setting up a lab in virtualbox for different tasks: local net testing & vulnerable virtual network

I have seen several tutorials about setting up Virtualbox networks for Kali & vulnerable machines together using the option Internal network, but I have several questions regarding other ...
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Are CPU side-channel attacks still a concern on VPSs

I've been looking into getting a VPS to run an OpenVPN server on and a few other things. I've been speaking to a hosting company and they have sent me this screenshot to show they are protected ...
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Using Hydra not sending traffic to target VM

I have 3 VM's 1 with Ubuntu server version 20.04, apache2, php, mysql and DVWA. (10.0.2.4) 1 with Ubuntu client version 20.04 with hydra installed. (10.0.2.5) 1 with Kali 2021.3. (10.0.2.6) All VM's ...
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Is protecting against Meltdown and Spectre on virtual servers actually possible?

I've been reading into the Meltdown and Spectre bugs recently and the issues they cause for virtualised servers, as memory in one VM can potentially be accessed by another user in a separate VM with ...
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Can you subvert a physical system at runtime?

In case of a virtual machine it is possible to break out of the VM and gain code execution on the host. In that way you could evade any detection mechanism for malware inside the VM and maybe even on ...
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Browser fingerprint is unique while running a VM of a clean install of Windows 10

So I used Qemu on Ubuntu 20 to emulate a computer running windows 10. I kept all of Qemu default values. Then, while installing the Windows 10 iso, I kept all the default values once again. Finally, I ...
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Can I detect malware that’s on my host OS if I’m using diagnostic tools in a VM?

If I have a VirtualBox VM running Kali Linux, can I use its diagnostic tools to search for malware on the host?
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How effective is Windows KDP for exploit mitigation in practice?

Windows Kernel Data Protection is a kernel security feature which appears to use Extended Page Tables (EPT, a hardware virtualization feature) to enforce read-only pages. How effective is this at ...
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Can computers built in minecraft be used to hijack hosts?

As people build more powerful computers in minecraft which can then run programs, is there a way to use those computers to run programs that hijack the host in some way? Possible contest example would ...
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Can you make your host machine appear as a virtual machine?

I keep seeing how people are working to make virtual machines look more like real machines, but I have been wondering about the reverse. I have noticed a trend where viruses will automatically shut ...
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secure deletion in virtual machines [duplicate]

when we securely delete a volume in a machine which is installed in a virtual machine or docker, for example by overwriting 7 times or more, we securely delete the data in virtual disk (in guest) and ...
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Does running a virtual machine provide a small layer of protection against an infected host in practice

Obviously a host can modify a virtual machine in any way and has full control over it, but in practice perhaps most viruses wouldn't have the complexity to search for virtual machines and modify them. ...
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54 votes
6 answers
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If malware does not run in a VM why not make everything a VM?

There is a lot of malware that can detect whether it is running inside a VM or sandboxed environment and if such environment is detected it can conceal it self and not execute. So why not make ...
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15 votes
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Norton detects intrusion attempt from virtual machine - how is this possible?

Sometimes I have to fix an infected WordPress website. I always check the infected website from a virtual machine (Oracle VM VirtualBox). I'm also running Norton 360 DeluXe on the host machine. In the ...
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How to Minimize Risk of Remote Access from Potential Job Scam?

Question resolved: no reason at this time to assume the remote access was with any malicious intent. [skip this beginning if you want] My partner was offered a job with a real estate listing company ...
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1 vote
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Does streaming a game from a dedicated gaming VM still expose my PCs to significant privacy/security concerns from installed games?

So the plan is to make a Windows 10 guest, give it lots of vCPUs and memory, perform GPU passthrough to achieve maximal performance, and then load my games onto this guest. The aim of this would be to ...
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2 votes
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Would it be more secure to have untrusted applications execute on a type 1 or a type 2 hypervisor?

My usual workflow is to run potentially malicious applications/websites (untrusted) inside of a virtualbox VM. Lately I have been playing with hyper-v. From what I gather, critical windows components ...
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Is a VirtualBox guest isolated from the host?

I have a Linux machine running Kubuntu 20.10. I have installed VirtualBox 6.1. I then created a virtual machine on which I have installed Windows 10. Suppose an hacker enters in my Windows 10 guest. ...
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7 votes
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Can Google access data in their Confidential Computing VMs?

A cloud operator such as Google can take a snapshot of a normal VM. This includes CPU state, RAM and disk. This can then be copied to another physical and resumed there. Or it can be analyzed off-line,...
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Can a host OS be attacked through the network stack?

Forenote: I'm not familiar with how virtualisation works on a low-level (but I'd certainly like to learn) so this question could arise from ignorance. Example Scenario: One virtualised router is ...
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1 vote
1 answer
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Virtual machine protection

Let's say I have VirtualBox or Vmware Workstation on a Windows 10 Pro host, hosting Windows or a Linux distribution such as Ubuntu or CentoS). If I have an antivirus or Internet Security software on ...
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Which information of a VMware image can be monitored from the host?

I run a Linux virtual machine on my Windows 10 host. What information (e.g. https traffic) can be monitored from the host? Is it safe to browse on a virtual machine that uses the host device's network ...
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Absolute Software vs Virtual Machine

If a laptop has Computrace/Absolute software installed and I host a VM there, would the Computrace/Absolute software be able to track whatever they track on the VM?
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Does Microsoft implement "Windows Defender"-like security for WSL 2 instances?

I'm not certain whether WSL 2 instances, running in Hyper-V, are actually scanned by Windows Defender. I have found some articles on Google describing Window Defender's performance impact on WSL, but ...
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nmap -oG X.X.X.0-255 doesn't work and all my ports closed ( expected list of open ports ) [closed]

I'm running kali Linux on VirtualBox. I ran sudo ifconfig to get my IP and subnet mask (X.X.X.15 and 255.255.255.0 for eth0) I tried the command nmap -oG X.X.X.0-255 -vv but I got Read data files ...
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2 votes
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What disadvantages running untrusted applications in anbox has over running them in a virtual machine?

I consider running Android applications in Anbox instead of running them in a virtual machine (Android-x86 in GNOME Boxes using QEMU with KVM). Does it increase the chances that malicious code in an ...
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0 votes
1 answer
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Getting AVAST alert during program update/upgrade in Kali Linux

So i started to use VirtualBox in windows 10 and i would like to know if those alert from my windows 10 security program (avast antivirus), during my installation/upgrading of TheHarvester program at ...
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VirtualBox setup - running potential virus [duplicate]

Is my VirtualBox setup fine for running a potential virus/malware? Here's the screenshot of my settings - CLICK Shared clipboard and drag n drop are off. Let me know if anything else is required.
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Host filesystem manipulation from docker vs. virtual machine

When reading about docker, I found a part of the documentation describing the attack surface of the docker daemon. From what I was able to understand, part of the argument is that it is possible to ...
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2 votes
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What are the security risks of running QEMU/KVM as root?

Context: I own a machine; I trust root and all the accounts. I virtualize untrusted guests using KVM, and don't want them to escape. When /dev/kvm has the right permissions, non-root users can run KVM ...
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Is a virtual machine efficient for isolating viruses from pop-up ads? [duplicate]

To be more clear, I would like to access movie streaming websites which have lots of (pop-up) ads and I’m fearful that I might deal with viruses. Would VirtualBox help me isolate this type of viruses? ...
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Is LXD virtualization as isolated and secure as KVM virtual machines?

Stumbled upon a privacy conscious hosting provider that uses LXD vs KVM to manage user VPS instances. My understanding is KVM is more isolated so using LXD doesn’t make sense from a privacy ...
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3 votes
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In setting up a VM, does the Bridged or NAT configuration provide more separation security?

I am setting up a few VM's (assume VirtualBox w/ Linux). They will all be on the same PC host (assume Linux) and the intent is to have all the VM's handle separate functions (business, personal ...
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5 votes
3 answers
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Can a website keylog you outside a virtual machine

I came across a suspicious website called keylog.me (you can already tell from the name). I was as curious as heck to find out what it does, so I got on a VM (Fedora Linux which I reinstalled later) ...
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5 votes
2 answers
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Is it cryptographically safe to use veracrypt in a virtualbox virtual machine?

Does virtualbox provide enough entropy (random numbers) for the veracrypt program on the virtual machine? Is it cryptographically safe to use veracrypt inside a virtualbox in a windows 10 guest?
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-1 votes
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Can ransomware detect Virtual Environments?

My title says it all but here is a scenario: I download a suspicions file and run it inside a VM.If everything works, I will deploy it to my original PC. I plan to use these: 1.Oracle VM 2.Vmware 3....
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