A software program capable of reproducing itself and usually capable of causing great harm to files or other programs on the same computer.

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0
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1answer
240 views

Lost all desktop settings

I'm using windows 7. I logged in one morning and found my desktop background was black, and I had lost all my desktop icons & settings. I then found that I could not open any application - it ...
0
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0answers
114 views

Browser redirects links to Adfoc.us [duplicate]

Since yesterday when I open a link, browser redirect it to "adfocus.us" site! for example: I open: test.com and browser redirect to: adfocus.us This redirection happens after going to page (not ...
0
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0answers
708 views

What is atos? It keeps popping up on my Mac

So what is atos? It keeps popping up in on my mac screen that I need to give my password to let it do something. Is this a virus or is my Mac being hacked? Please help!!!
1
vote
1answer
17k views

Google Chrome keeps opening this new tab - virus?

Recently (starting about 2 weeks ago), when I click on something (usually a link) in Chrome (on Windows 7), there is probably a 1-5% chance (a couple of times per day) Chrome will open this page on a ...
-2
votes
1answer
69 views

Shutting down my windows 8.1, it says Screenshot App not responding, but i dont have any such apps installed

Shutting down my windows 8.1, it says Screenshot App not responding, but i dont have any such apps installed. I have done a search a and found nothing remotely like it. could this be a hidden ...
1
vote
1answer
33 views

how to edit windows registry so it NEVER looks on a usb drive for its driver (or at least asks first if a driver is found)

I'd forgive them for this "feature" if the usb standard had been created BEFORE viruses had become prevalent.
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votes
2answers
366 views

Should I be worry after opening suspicious Email attachment?

Yesterday, I have received this following suspicious email Normally, I would not click on any of the email attachments if I am not sure about the origin of it. But yesterday, I accidentally opened ...
0
votes
2answers
2k views

Virus causing multiple explorer.exe instances using high memory [duplicate]

To begin, yes, there are similar questions out there, even on this site. However, none of them seem to off a solution outside of format the computer. Story time! (Or the background to this whole ...
1
vote
3answers
115 views

How do you get rid of a program that you don't have access to delete? (Virus - SearchProtect)

I've been trying to get rid of this highly malicious program called SearchProtect. Every few seconds I see my anti-malware program popup, blocking this program. I deleted it from the uninstall ...
1
vote
1answer
251 views

Tuneup pro virus opening its own searchtab, how to remove without formatting

Ok, I have had it with this bastard. I have tried everything free you can get a hold of but I can't get rid of it. I know the best way to get rid of it would be to format the computer, but! A) My ...
-2
votes
1answer
348 views

Can i get virus/trojan from cracked software when my windows is installed with avg 2015 [closed]

One of my colleages says that he is free from virus/trojan from cracked softwares as long as the PC has AVG 2015 free edition installed. Is it correct?
1
vote
2answers
196 views

Does changing or removing file extension trick antivirus software?

I have little experience of antivirus software. I wish someone help me with common antivirus behaviors. For example, I have an EXE or PDF file containing virus. Does removing the .exe/.pdf or ...
7
votes
3answers
5k views

How to determine what is running in DLLHOST.EXE that's missing /ProcessID switch?

I have multiple dllhost.exe processes running on my computer: Every one of these image's command line is missing (what I am thinking is) the requisite ...
0
votes
1answer
245 views

Cryptolocker: Derive Key Mathematically From A Decrypted Copy of a File?

Would it be possible to derive the key, if you have a decrypted version of a file, let's say this file, as an example: "C:\Windows\ehome\en-US\epgtos.txt" Or do cryptolocker and it's class of virus ...
-1
votes
1answer
48 views

Virus messed with networking and cannot connect to the internet

I downloaded a program that ended up being malicious and compromised my computer. It installed a "Smartbar" Application and a few other applications that were probably keyloggers or something of the ...
0
votes
4answers
607 views

How can I catch a HTML/Iframe.B.Gen virus on windows 8.1?

Do I have to click ok on a dialog box (e.g. "Download this") or can it infect the computer without any action on my part (other than, say, visiting a site that has been hacked)? Will being a non ...
0
votes
1answer
1k views

Windows 8.1 - HDD spinning at 100% even though no read/write

I have an HP Laptop (Core i5, 8GB RAM, 320GB HDD) running Windows 8.1 (x64), that recently got the Sality.AU Virus. The OS had only just been installed, and a friend downloaded the drivers and put ...
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0answers
153 views

Effectiveness of SD Card write protect switch as protection from viruses

Given that the SD card write protect switch simply indicates to the OS that it is switched, and doesn't prevent writes to the medium, how effective is enabling write protect against viruses? Are ...
1
vote
3answers
4k views

Can you get virus by clicking .zip file? [duplicate]

I tried to uncompress a zip file but I get error “The compressed (zip) folder is invalid or corrupted”. Is it possible to get virus just by trying to uncompress the zip? Can zip extension be ...
0
votes
2answers
378 views

How to know your Mac is not compromised (software and hardware) after lending [closed]

Is there a way to find out if your Mac has been compromised software and hardware wise? I have a pre-unibody MacBook (2007), and it was in someone else's hands once. I want to make sure: the person ...
32
votes
6answers
6k views

Do all programs running in a computer show up in the processes tab in Task Manager? [duplicate]

The reason I am asking this is because I am curious if there can exist a virus in the computer without me ever being able to know it exists. To be more specific, a virus that emits no signs of any ...
-1
votes
1answer
139 views

How can I remove the `qbqjralptr..vbs` worm? [duplicate]

I'm trying to remove a virus from my friend's PC. The virus is called qbqjralptr..vbs & I found it's a worm specified like USB – Dinihou – Houdini Worm.VBScript It seemed easy to remove but I ...
0
votes
0answers
2k views

How can I use Decryptolocker to decrypt all files in a directory?

I have downloaded Decryptolocker and have the key required to decrypt files. The instructions state to use it as: Decryptolocker.exe --key "<key>" <Lockedfile.doc> How can I use it on a ...
0
votes
0answers
31 views

Microsoft Security Essentials keeps finding MSIL/Bladabindi in a tempskype.exe. MSE keeps removing it but it comes back every few seconds [duplicate]

Microsoft Security Essentials keeps finding MSIL/Bladabindi in a tempskype.exe. MSE keeps removing it but it comes back every few seconds. What do I do to get it to stop?
0
votes
1answer
98 views

Can anyone interpret the data in this UDP packet?

I have been receiving large amounts of traffic to my computer recently so I downloaded and ran wireshark to find out I have been receiving lots of UDP packets. All of the packets I have received are ...
0
votes
1answer
53 views

Can a host get a virus from a USB device if the guest has control of the device?

For example, if running Windows with a Linux guest, is it safe to stick in a USB to scan for viruses with Linux, or can it infect the host OS as well?
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votes
2answers
263 views

How do I attach a virus to any file for an antivirus project?

I am making an Antivirus Project. It shall scan the files for any attached infection, but I don't know how does this work. So I firstly wanted to know, how does one attach any malicious executable ...
0
votes
2answers
1k views

Suspected virus in my Windows 8.1

I suspect that I have a virus in my computer. There is a large amount of UDP traffic in my network card, I installed Wireshark and there was large amounts of UDP traffic, all of them are from the same ...
0
votes
0answers
36 views

Keyboard and Gamepad Controllers 'Ghosts'

I have a mediatech keyboard and some cheap gamepad controllers but two weeks ago I noticed that random keys on the keyboard are being pressed 'not by me' and immediately sleeps . After one week, I ...
0
votes
0answers
200 views

Keyboard issue and HP Help and Support Pop-up issue

Last night my HP Pavilion started acting abnormally. My keyboard began to malfunction; every button I pressed acted as a shortcut for things on my computer (i.e. D took me back to desktop, Spacebar ...
-1
votes
1answer
54 views

I have a crazy virus [duplicate]

I have a message pop up when I log in and try to open a folder with my go pro footage. It pops up a window with the title being "you are about to be logged off" and the window text "a virus was ...
5
votes
6answers
11k views

Chrome works only outside of sandbox?

I have been trying to solve this problem for a long time. I have been using Chrome for more than 4 years, it is the best browser for me. Suddenly, Chrome stopped working. I tried uninstalling it and ...
0
votes
0answers
24 views

How do I find a virus? [duplicate]

Unfortunately, I have contracted a virus on my computer. I have run several different scans from several different anti virus programs, but none have picked it up. First of all my computer starts to ...
2
votes
2answers
857 views

Localhost connecting to self on port 1111. Virus or ok?

When I run netstat -a on Windows 8.1 I am seeing a number of connections from 127.0.0.1: ports around 50000 connecting to My PC name (DadsPC) on port 1111. A portion are listed below. Is this normal? ...
2
votes
1answer
107 views

Is this a virus?

When I format My flash as NTFS right after the Format Compeleted window, I see that is has 1.83 GB free space. But after 10 -20 second, the free space changes to 1.80 GB automatically! I ...
0
votes
2answers
235 views

How can I track down a destructive virus? [duplicate]

A family member yesterday asked me to look at their work laptop (they're self-employed) since the memory usage is almost at 100% after an hour of it not being used (6GB RAM on idle shouldn't be at ...
1
vote
1answer
26 views

Virus forces system re-install. Can I save essential documents to transfer to clean operating system?

As the title indicates, I have some virus issues and have read on this site that the best course of action is to re-install my OS. I am an unsophisticated user and, as a result, have no backup of my ...
-1
votes
1answer
563 views

How to clean USB flash drive from infections safely without loosing files/documents inside

How to clean USB flash drive from infections safely without loosing files/documents inside? When I connect usb drives there are shortcuts, exe files and hidden files so i want to make un-hidden, ...
0
votes
2answers
774 views

Opera keeps prompting me to update Java- is this a virus?

Over the last few weeks, I've noticed that I keep getting prompted to update my Java at increasingly regular intervals. In the past, I have usually just gone ahead with this, but I am sure that it ...
0
votes
0answers
253 views

Input Source Language keeps changing on Mac OS X 10.9.2 — how to make the computer keep my desired setting?

First time posting on this site so hopefully I am posting it in the right place. Apologies if not. I've been having issues with my MacBook Pro (15-inch, mid 2009). I have my input source language set ...
0
votes
1answer
102 views

A very clever virus?

This happened after I'd deleted all my system restore points to save disk space on my 60GB SSD, and run a MBAM scan the day before. Yesterday I downloaded a video file that would not play, though it ...
1
vote
2answers
393 views

I started downloading MacKeeper, but can't quit the download — what should I do?

I saw MacKeeper on a link to download something and it said it would clean your computer for you. I started downloading it and halfway through I searched "Is MacKeeper a virus?" What I found told me ...
0
votes
0answers
90 views

I am constantly getting a warning to update my flash player?

Two days back i started using wifi of my parents.Initially it was fine but after that i have been getting constant warning to update my flash player on each. I have not been able to access google.com, ...
1
vote
1answer
120 views

Why this C++ program is recognised as a Trojan? [closed]

I was writing some code for online judge, #include <iostream> using namespace std; int main() { int t, ds, dt, d; double x; cin>>t; while(t) { ...
4
votes
0answers
154 views

Files were encrypted by virus, and old (win 7) OS is gone - What Do?

So for the past few weeks I have been planning on switching from windows 7 to Ubuntu (14.04) with windows running in a VM for whenever I need it. 2 days ago my antivirus complained to me that I had a ...
1
vote
1answer
10k views

JavaScript injection script, how to remove?

today I started to notice a very strange behavior. At some intervals my web pages in Chrome browser changes its web address to some javascript code javascript:try{if(document.body.innerHTML){var ...
0
votes
0answers
102 views

After typing a web address, unwanted content “salesforce.com” appears in it and redirects me

When I type a web address in my web browser, "force.com" or "salesforce.com" comes up in it. Here's an example: https://k12parentportal.force.com/portal_enrollmenthome>. Everything is correct except ...
0
votes
0answers
194 views

Sudden change of username & password prompt from UAC?

I just recently noticed that my username changed from "Dani" to "daniel" (It's a computer I recently got and haven't gotten around to changing its name.). The name of the PC is still the same ...
0
votes
2answers
37 views

Restore computer with a virus [duplicate]

I have had a virus for a while now and it has got to a point were I can't get past the welcome screen when I start up my computer, I know my computer has not got slower from use because before the ...
1
vote
2answers
50 views

Is it safe to download DLLs?

From the title, the question you may assume I'm asking is "Can DLLs be malicious?" But I'm really asking if the mere act of downloading a malicious DLL can pose a threat to the security of one's ...