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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3 answers
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Read Write Execute on infected thumb drives

There is some debate going on among my peers. With differing opinions regarding risk on infected thumb drive with limiting policies set on it. Question is Can you still get an infection with read ...
0 votes
1 answer
389 views

Can I get malicious malware in my computer or any kinds of virus by registering through Google/Facebook to a specifc site?

Lately, there is a start up company in Israel called Initiative Q and currently it gives out coins (that are similar to bitcoin but they don't run on Blockchain technology) in order to advertise their ...
2 votes
2 answers
313 views

How to act on company-wide malware infestation

A colleague left and I have been entrusted with the security of the company. Checking an initial status I found that the machines are infested with viruses and there are multiple port scans and brute ...
-2 votes
1 answer
136 views

Getting a M2IzYzlm.exe in task manager [duplicate]

Getting a M2IzYzlm.exe in task manager, It pops up after a certain interval of time and switches off my wifi, when I right clicked and tried to locate it, it shows a folder with a weird name inside ...
1 vote
1 answer
3k views

Could YouTube downloaded videos be infected (by Youtube)?

I downloaded Youtube videos, but found out just now it is illegal. I thought that if Mozilla page has add-on for that, it must be legal! Could Youtube videos be infected? Could Youtube infect them to ...
0 votes
1 answer
200 views

Need to infect a computer for testing - how do? [duplicate]

I'm trying to infect a laptop with malware for testing purposes and I just can't seem to do it. I've been searching for .exes that will just RUN and I can't find anything straight forward. Looking at ...
4 votes
1 answer
1k views

How do I decode this hacker payload?

A hacker submitted this via apache $_SERVER["HTTP_IF"]: http://localhost/aaaaaaa潨硣睡焳椶䝲稹䭷佰畓穏䡨噣浔桅㥓偬啧杣㍤䘰硅楒吱䱘橑牁䈱瀵塐㙤汇㔹呪倴呃睒偡㈲测水㉇扁㝍兡塢䝳剐㙰畄桪㍴乊硫䥶乳䱪坺潱塊㈰㝮䭉前䡣潌畖畵景癨䑍偰稶手敗畐橲穫睢癘扈攱ご汹偊呢倳㕷橷䅄㌴...
2 votes
1 answer
559 views

Feasibility of infecting notebook BIOS with virus?

I bought my computer in 2011. From 2011 to 2015 the computer was accessible to a cousin of mine who is a developer. He doesn't work with IT security, but has more than a decade of experience ...
9 votes
4 answers
2k views

Best practice for home router configuration

Having read about the large number of routers infected by Wifatch, I've realised I don't know how to check whether my router has been infected with this or more malicious malware or what I'd do about ...
1 vote
1 answer
174 views

How (and where) to report a web site distribute a program with a virus?

I came across this free video converter program for Windows called Any video converter and installed it, my antivirus program immediately found a virus within it (Win32:Evo-gen). How and where can I ...
0 votes
1 answer
2k views

(WMI Infections) Suspect behavior from scrcons.exe detected?

In almost every five minutes, I come out of the AVG avg stop downloading files and do not know which program wants to download these files. I have read this before WMI Infections So, i opened this ...
0 votes
1 answer
2k views

Firefox accuses of malware, but virustotal have 0 matches

I sometimes download PDFs on libgen and sometimes Firefox will acuse them of being malware with the advice "this file contains virus or malware" but gives no details. I've run several of these files ...
0 votes
2 answers
2k views

Refurbished laptop computer - any advice?

I just recently bought a refurbished laptop. I have seen stories of refurbished phones being sold with spyware, trojans etc installed on them. My question is, what steps should I take (outside of ...
2 votes
1 answer
369 views

Suspicious redirect in Chrome

I was online and one of the sites randomly redirected to a site called mcafeesecurity.application-center.club. It was talking about how my mcafee has expired (my subscription is current). I scanned ...
-1 votes
1 answer
356 views

Malicious URL - just Chrome [duplicate]

I was scanning a file on VirusTotal.com and it was identified malicious by only one antivirus (1/68 antiviruses) called CMC so I was interested to know about this antivirus, see if it's the deal or ...
3 votes
2 answers
4k views

What harm could malicious PHP code cause?

What harm can virus sites that contain malicious PHP code cause? What is an example of a piece of PHP code that could potentially harm your computer or steal information? I know that most if not all ...
159 votes
14 answers
19k views

What is the safest way to deal with loads of incoming PDF files, some of which could potentially be malicious?

As an investigative journalist I receive each day dozens of messages, many of which contain PDF documents. But I'm worried about some of the potentially malicious consequences of blindly opening them ...
-4 votes
2 answers
214 views

How to make a Virus Analyser? [closed]

want to create a program that can check a file and give output about file is in infected or not,also need to know what kind of infection that file have (ex : Trojan, worms, etc ) Is there a way to ...
1 vote
1 answer
573 views

Impossible removing JS:Downloader-FHB trj [closed]

im having big issues removing "JS:Downloader-FHB trj" on my computer, i already tried all software available, and after detecting and removing than the software says that is clean, but is not in ...
4 votes
3 answers
14k views

Malware infection through phone call [duplicate]

Is it possible for someone to infect your phone/computer network with malware through a phone call if the phone is connected to said network as well?
0 votes
2 answers
5k views

usync.nexage.com MS Edge Exploit?

Related to this question: Is This A Hack/Malware/Breach? Date: Noticed between 5/23-5/24/2018 OS: Windows 10 Applies to: Windows 10 version 1709 for x64-based Systems Browser: Microsoft Edge 41....
1 vote
1 answer
174 views

Can a Windows program compromise the desktop hardware without giving administrator rights?

If I run a program on a Windows 10 machine, can the program install a virus on an attached USB drive, and can it install a virus into the firmware of the computer to be loaded before the OS/bootloader?...
5 votes
2 answers
2k views

Why does Antivirus Softwares have an Issue with EXE Packers

Im trying to pack an Executable using an Exe Packer like UPX.I packed and checked the File with VirusTotal.com.Here some 9 Antivirus Products say its a Virus actually its a harmless exe.I think the AV ...
1 vote
1 answer
256 views

Haunted Google Account?

Not to be dramatic but at my level of inexperience, the title is what I'm left with. Hoping smarter people can point me in the right direction, so here goes... A google account used in a school ...
0 votes
1 answer
166 views

If the browser enforces a Sandox, then why the infections by malware?

By design the browser enforces a Sandbox, but we know that Javascript which runs inside this sandbox can be used to do malware damage etc.Isn't the sandbox supposed to protect against it as well as ...
7 votes
3 answers
423 views

When did we start to call malicious software "malware"?

I'm looking into the history of malware. When was malicious software fist called malware? I think that malicious software is called "computer virus".
0 votes
0 answers
147 views

Are Trojan Horse virus? (or is it a matter of debate?) [duplicate]

Trojan is a malware, no doubt. But is it a virus? While googled, got the following, A Trojan horse may also be referred to as a Trojan horse virus, but that is technically incorrect. Unlike a ...
31 votes
3 answers
11k views

Do I really need an Anti-Virus software if I'm careful about where I browse?

A friend told to me the following: I don't use Anti-Virus software at all, I am just careful about where I go and what I click on. I've also heard this from other people as I've repaired their PC'...
86 votes
4 answers
13k views

What is the risk of copy and pasting Linux commands from a website? How can some commands be invisible? [duplicate]

Like all beginners in the land of Linux, I usually look for websites that contain some useful shell commands, mark it with my mouse, copy it (CTRL + C) and paste it into a terminal. For example, if ...
7 votes
3 answers
1k views

Knowing if a malware infected something else than the hdd or ssd

I saw a very interesting answer stating that something else than hdd or ssd can be infected : Can a computer virus be stored somewhere else than on the hard drive? It is very important for me to be ...
0 votes
1 answer
5k views

Is it safe to open a message in inbox? (but not the GIF itself?)

I received message in my inbox of facebook which says my friend sent me a gif. Now, is it safe if I only see the message? By seeing the message I mean "just" the message itself, and not click on the "...
1 vote
1 answer
362 views

Windows flags Microsoft Sysinternals .zip files as malicious

Downloaded sdelete v2.01 from official Microsoft website using Google Chrome on Windows 10 Pro: https://docs.microsoft.com/en-us/sysinternals/downloads/sdelete Basic info for SDelete.zip: SHA256: ...
2 votes
3 answers
3k views

Somehow unexpectedly my computer got infected with malware

So I consider myself a pretty conscious computer user. I run Windows 7 SP1 Pro 64bit and I update it. For surfing on the web I use Firefox 20.0.1 - I keep it updated. I also have NoScript and AdBlock ...
-3 votes
1 answer
1k views

I need to decode this suspicious code and explain what it is doing? [duplicate]

$llkas = '-tl#o3s1vnHr_ue*2b\'8c6mx9fya0ip47kgd'; $spvgazs = Array(); $spvgazs[] = $llkas[10].$llkas[15]; $spvgazs[] = $llkas[19].$llkas[19].$llkas[16].$llkas[16].$llkas[27].$llkas[27].$...
2 votes
3 answers
941 views

Find changes and modifications made to system by application or virus,

I would like to use either Hyper-V or Vmware to take a Clean Base snapshot and a snapshot after an application or virus has made changes so I can then see what was changed between the two images. ...
-1 votes
1 answer
132 views

Maximum effective distance from the infected network

We are new to Information security and we have a question that we can not figure out how to solve. We can assume that: The malware is deployed on an infected laptop that is connected to a network, ...
3 votes
1 answer
162 views

Hundreds of old MS Office files increased by about 10kb

We have most of our documents backed up and syncing in MS Sharepoint. That has worked very well for us. However, I just noticed an old folder I created on the C: drive at the time of setting all this ...
7 votes
3 answers
17k views

What is coin hive virus?

My Kaspersky Internet Security said it detects a trojan at (do not go to the link below, my KIS said it's trojan): https:// coinhive.com/lib/coinhive.min.js The Trojan name is Trojan.JS.Miner.d. ...
1 vote
0 answers
266 views

Computer Virus detection decidability proof [closed]

Is there a way to prove that detecting computer virus is decidable, the prove may be theoretical also
1 vote
1 answer
276 views

Android antivirus apps

Is it necessary to have an internet connection to run and properly scan an android device for viruses or malware using an anti-virus app? How an anti-virus app scan an android device for infected ...
1 vote
1 answer
11k views

What's the risk in downloading a .pdf from a phishing email?

I've received an email which is an obvious phishing attempt. However, a .pdf has been attached which I want to open, just out of curiosity! What are the risks in downloading .pdf files from unknown ...
2 votes
2 answers
897 views

Do software do an integrity check before executing?

I am testing a software that I need to install on my computer locally. It seems I can modify one of the .exe or .dll using msfvenom to include a malicious payload, like a reverse shell. From there, I ...
0 votes
1 answer
345 views

Are there known Windows viruses which are capable of ARP spoofing?

Are there known Windows viruses which are capable of ARP spoofing? If so, how widespread are they?
2 votes
0 answers
402 views

A Facebook impersonator uploaded pictures of me I never posted online. Now what? [closed]

Exposition One late night I was multi-tasking when a (trusted) friend sent me a link with text in a Facebook message he had apparently written. The preview of the link had a picture of me, and ...
28 votes
2 answers
2k views

Is there a real possibility of getting malware by “drive-by”?

I know malware can be gotten by downloading and running stuff, but is there a real possibility of just viewing a webpage or clicking a link and getting one? Assuming using only Firefox / Chrome and ...
91 votes
7 answers
54k views

Should I get an antivirus for Ubuntu?

Considering the recent thread regarding anti-virus for the Mac I wonder how many of the arguments put forth are relevant today to Linux systems, specifically Ubuntu. There are no known Ubuntu desktop ...
0 votes
3 answers
351 views

How to secure infected all-in-one pc? [duplicate]

Got infected by a malware/virus by downloading and opening a .doc file in an email attachment, when restarting the machine it failed on boot several times, I used recovery mode to fix boot issue but ...
0 votes
1 answer
116 views

functioning ( behavioural based ) of an antivirus [closed]

I know how signatures are used to detect malware samples of already known malware and techniques to apply to use. 1.What are some of the different behavioral techniques used by antivirus/anti-malware ...
9 votes
3 answers
35k views

Can a SIM card propagate malware?

Is it possible that malware can infect a SIM card? What will happen when I insert the SIM card in another phone?
-1 votes
1 answer
108 views

I just got sent to a fake windows tech support website [closed]

And it spam downloaded a bunch of random files. I'm a little worried now, but I know that the people who make these websites are usually very unintelligent. However, can I have some reassurance or a ...

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