Questions tagged [virus]

A computer virus is a program or piece of code that tends to be malicious and is loaded onto your computer without your knowledge and runs against your wishes.

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If I disable CSM (Compatibility Support Module) in UEFI settings, will it protect me from malware that infected MBR boot sector?

As far as I understand, when in CSM mode, UEFI boots using MBR boot sector (from internal hard drive, external USB Flash drive, etc). And when in non-CSM mode, UEFI ignores whole existence of MBR boot ...
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Is it possible for media files (mp3,mp4) contain malware [duplicate]

I would like to know the technique and if it’s possible in the first one place, not activating the media player the file it self
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Can flash drive infect Android and then the Android infect Windows PC?

I found a flash drive outside my home. Thinking one of my neighbors might have dropped it and wanting to return to them (but still wanting to be cautious), I (stupidly) plugged it into an old Android ...
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I clicked what looked like an Amazon email, but it (maybe) was from an Amazon affiliate. Ended up at Amazon.com anyway. Can I safely investigate? [duplicate]

In a case of clicking too fast, I clicked on a picture that looked like it was from Amazon. However this was not the case. I did end up at Amazon, but I'm aware that other things could've taken place ...
2 votes
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Where can I find the launcher for this virus that uses Powershell?

On my Windows 10 PC after about 30 minutes of being turned on I always get a powershell window that immediately hides and consumes a lot of RAM. So I went to the powershell directory: "C:\Windows\...
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Firebase's CLI flagged as malicious by VirusTotal. Is it false positive? [duplicate]

I'd like to use Firebase's CLI, but I'm concerned about the safety issues in regards to this found: https://www.virustotal.com/gui/file/b33f6784d0d71c6f1beda4432ec1c8ab00604e88c2b0d3360ced6d152ad584cb/...
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Have I been attacked?

This may be a dumb issue, but I have no other way to find out. At some point I was sent a facebook message from someone with a name of a person I knew, who wrote something along the lines "haha I ...
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How dangerous is it to visit a website?

I visited theannoyingsite (not hyperlinked because it is a nightmare) It tells you to press space for three seconds, and then it unleashes hell upon your senses. Loud noises, bouncing windows, ...
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9 answers
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Is it enough to verify the hash to ensure file is virus free?

I download all kinds of stuff from shady places. But I want to be sure there are no nasty viruses in these files. Is it enough if I just check the hash? For example, when I go https://www.virustotal....
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How to tell if an image has a virus? [duplicate]

I received (and opened) an image from Whatsapp. How can I know if this image contains a virus (spyware)? Is it possible to send photos containing virus using Whatsapp Mod (unofficial versions of ...
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What does it mean when Google anti-virus engine reports "Detected"?

I need to convert a ton of directories of JPEGs into PDFs or EPUBs. So I downloaded this: https://ci.appveyor.com/project/josch/img2pdf/build/artifacts Being scared that it might be malware, as any ...
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2 answers
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Are browser extensions inherently unsafe?

If we're doing sensitive things in the browser, like logging into cryptocurrency exchanges, is it too risky to have any browser extensions, for fear that there's a virus or something in them?
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How does the "ClaimLetter#.zip" attack work?

I wonder if this is the right place to ask about the specific functioning of viruses / worms. We all receive fishy mails all the time. And generally I never click on anything, especially not ...
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1 answer
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Can I trust companies that test antimalware software? [closed]

Do they lie? I mean companies something like AV-TEST, AV-Comparatives, Virus Bulleting, ERG Effitas, etc.
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How do I recklessly browse the web, download suspicious files and run them with as low a risk as possible? [duplicate]

I have recently found out about the existence of virtual machines they can be used to run viruses in an isolated environment from the host computer, like virtual box, vmware and sandboxie. However, I'...
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Boot virus on GPT?

I remember that some rare viruses can hide in MBR(it's 512bytes space). It's difficult to be detected and even if I reinstall operating system, the virus won't disappear. But how about it on the new ...
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What are the best security practices when when using VirtualBox on Windows 11 with an old OS?

Got a cheap new laptop to play old games with a VM of Windows XP/7, with the host being Windows 11. Using a WiFi that isn't my own (as I don't plan on connecting to the internet with this laptop) I ...
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Can an ISO file be harmful if opened as an archive?

I was trying to download something off a sketchy website, and ISO was a reasonable extension for what I was trying to get, but I was still pretty sure it was malicious. I didn't put much thought into ...
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Are there any known vulnerabilities that exploit google's PDF viewer?

I have told my users for years not to ever click on PDF Documents if they are not 100% sure they know where it came from as they can sometimes be the delivery vector for malicious code. Recently, one ...
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apps were opening on their own while i was gone for a while [duplicate]

When I open my laptop, it has this weird opening popup of a couple of cmds and it disappears rather quickly. I never thought about it since I didn't know what it did. Now after a while, I was gone ...
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3 answers
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Do some malware/viruses stay on the internet basically indefinitely?

Biological viruses stay in the population essentially indefinitely. We have immune systems, but this somehow doesn't cause virus strains to completely disappear after some time, as everyone's immune ...
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Is it possible for a Windows virus to jump in partitions that are for ubuntu and are not visible in "This Pc"?

I installed Ubuntu on my computer a year ago (dual booting) but I created partitions that are exclusively for Ubuntu. This is how some Ubuntu partitions look on Disk Management. On Windows I have ...
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I clicked on a suspicious link with cross site scripting vulnerability [duplicate]

I clicked on a suspicious link with cross site scripting vulnerability. Redirected me to youtube's home page. Anything I can do right now?
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Can I get viruses from compiling C# code?

I have found a tool that requires me to compile it with Visual Studio. I am not sure if I can do it without the risk of malicious software being installed during the compiling process. Is that ...
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Can a device be remotely accessed without anything needed?

Suppose you have a target machine (desktop, smartphone, server) and that you have any needed knowledge about the target machine to perform the following task. Is it possible to infect given machine ...
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Unintended file downloaded. Am I likely to have gotten a virus?

I clicked on a link that appeared to be perfectly legit. It proceeded to bring me to a suspicious website that downloaded a file to my PC automatically. I deleted the file quickly and never ran it. I ...
1 vote
1 answer
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Infecting laptop through a nearby Wi-Fi network?

Can a laptop get a virus through a Wi-Fi network with connected infected machines without connecting to the network (just by being withing the reach of the network signal and sensing it)? And vise ...
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1 answer
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Malware from Android text?

Lots of questions! I clicked a scam USPS link on my phone while half asleep. The website loaded and a small window popped up immediately and I quickly backed out of my browser but briefly saw the site ...
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Can a website access your browser password vault using a button that the user clicks? [duplicate]

I'm asking this question because almost all new websites ask us to click Accept Cookies button. So I click it reluctantly. I am afraid that the Accept Cookies button action would trigger some script ...
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Virus from Embedded Image in Mac Mail?

I'm using macOS High Sierra, and mac Mail version 11.3. I have a script that uses the Twitter API to continually fetch tweets in real-time and send the contents of each of these tweets, including any ...
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C# Hello World program detected as virus

I just wrote and compiled a Hello World program in C# (I'm using Visual Studio 2022) and when I sent the file to VirusTotal, 1 antivirus program detected the exe as unsafe (VirusTotal results of C# ...
2 votes
2 answers
5k views

Microsoft Defender flagged Surfshark.exe as "Misleading:Win32/Lodi"

Can this be safely ignored? VirusTotal shows that Microsoft is the only security vendor that flagged this file as malicious. I did not modify my Surfshark installation in any way, except for an update ...
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What firmware components of a PC are writeable?

What firmware components of a PC are writable? For instance which components have the ability to store rootkits or viruses?
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Can a mouse contain viruses? [duplicate]

My mouse dongle was plugged into a laptop infected with a Trojan Virus, is it a possibility for the mouse dongle to be infected?
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Does malicious MS Office xlsb file with macros posses risk to OpenOffice?

I opened malicious MS Office xlsb file with OpenOffice by huge mistake. I am wondering does it possess any risk? From what I am aware Excel macros are not compatible with OpenOffice. So I should be ...
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Is this weird folder "Up8d76c_31187" a windows thing?

I noticed it becaue one of these exe's started running after a BSOD. Putting one of the exe's into VirusTotal gives it a 3/70. How can I examine this further? Edit: Other exe's are worse: VirusTotal ...
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Malware link to QNap - What does this do?

I found shortcuts on shared drives in an org on the main drives (C,E,F,etc) but like so (.E, .F, etc). All of them have the ownership set to 'Everybody' only and only have read permissions, so unable ...
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What is the difference between malware signatures and malware artifacts?

I am trying to analyse some malware samples but I am trying to understand the differen between malware signatures and malware artifacts. As far as I understand (and from what I've understood from this ...
8 votes
2 answers
3k views

Clamav identifies Certbot files as infected

I ran Clamav on an Ubuntu 20.04 machine and it identified ten Certbot files as infected. /snap/certbot/1670/lib/python3.8/site-packages/pip/_vendor/distlib/t32.exe: Win.Malware.Generic-9937882-0 FOUND ...
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Is doc file really modifying registry in Windows?

Been given a .docx file to check whether it has a virus or something, ran McAfee and SuperAntiSpyware on it and results came back negative so I though it was good and proceeded to open it, just a file ...
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Do viruses spread by infecting other files on an infected machine?

Suppose malware lands and executes on a computer. Could this malware attempt to spread further by writing itself to data files (images, pdfs, docs) and hoping that the owner would transfer or upload ...
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Can a virus infect windows 10 bootable media?

I created a bootable windows 10 usb from my friend's computer. I used the official tool from microsoft. I was dumb enough to not check my friend's computer beforehand (turns out he had Utorrent Web ...
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1 answer
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Can two antivirus softwares work on one android phone?

Scenario: You have one antivirus installed on your phone. You suspect that your phone might have malware on it so you do a system scan and your AV doesn't find anything. So you decide to download ...
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Infecting files on GitHub

Suppose one uploads (carelessly or purposefully) a file with a malicious payload to their Github account (some pdf document, picture, etc.). Could this payload somehow be executed on the Github ...
1 vote
1 answer
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What equipment would an attacker need to infect a SIM card?

I'm aware that SIM cards can store malware according to this question but what equipment would be needed to do such an attack? For example, would you need a Computer and a SIM card reader or could it ...
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3 answers
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Mistyped "google" and came to a suspicious page with a browser hijacker

I misspelt google as "googe" (very dumb, yes). It took me to a page that asked me to enter my birthdate. The URL was something along the lines of luj dott proasdf dott com After going to ...
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Are there security risks to enabling 32-bit applications to run on Windows 10?

I'm installing an old game (32-bit) on my laptop (Windows 10 64-bit). This guide suggests enabling 32-bit applications to run with Internet Information Services (ISS), with the following steps:. In ...
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Do pdf files pose a higher security risk than regular image files (png, jpeg, etc.)?

Do pdf files pose a higher security risk than regular image files (png, jpeg, etc.)? In my understanding is that most image files don't carry any security risk because all exploits were fixed, but ...
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I ran an exe file on my computer [duplicate]

I downloaded a crack file today, Idk why I thought its safe to run, now my pc is infected. I already used Tronscript, kaspersky and hitman what else do you guys suggest me to do? thanks in advance. ...
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Why doesn't Defender get suspicious if a program adds exceptions to the Defender?

One can simply add exceptions to the Windows Defender by running this command in Powershell: Add-MpPreference -ExclusionPath <your_path> Why does Windows Defender not immediately flag programs ...
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