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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3
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0answers
145 views

How can I safely remove an RSA 4096 ransom-ware virus?

My dad's computer got infected with an RSA 4096 ransom-ware virus. For those who don't know it is a virus that encrypts all the files on your PC using an RSA 4096 encryption key. Then you need to use ...
0
votes
0answers
29 views

Virus keeps appearing. How can i find the security hole?

I just started working with this client recently, and when i got into his server, it was full of viruses. At least 4 of his cpanel users had viruses on their websites (completely managed by him). The ...
6
votes
3answers
3k views

Unknown linux process with random command

I have a unknown process when I run top: When I kill the process it is coming again with another random name. when I check the rc.d levels and init.d there are many random name similar like this ...
1
vote
2answers
59 views

How to overcome antivirus false positive error

We develop software which will upload the files to a website. We are facing the false positive error from different antivirus vendors. We have update file, downloader exe(which download the files from ...
3
votes
2answers
56 views

Hidden Files: Odd large system files taking up space on hard drive

In the above image there are four large files with names composed of what appear to be random (non-Roman) Unicode characters. I have no idea where they came from. Is anyone familiar with these? Do I ...
-1
votes
1answer
42 views

ZIP File Viruses

If I open a ZIP File, and attempt to open an example of "Virus.exe", my antivirus tells me that this file is unsecure or whatever, and I press on Don't run, is there still the possibility of my ...
1
vote
1answer
109 views

Weird-looking Registry entry under HKCU\Software\Classes (is it a virus)?

I wanted to set Photoshop as my default image viewer (need a workaround because Windows doesn't recognize it), so I have to edit my Registry. In the tutorial on the official Adobe website, they say to ...
4
votes
3answers
906 views

Norton Security Blocking Trojan.Gen.SMH (github.exe)

I've been using GitHub Windows App for several months and now Norton Security is blocking it because it's assuming it's a trojan (Trojan.Gen.SMH to be exact). I removed it from the quarantine but I ...
0
votes
0answers
52 views

Why is my Antivurus finding a virus on StackOverflow?

This came as a total surprise to me. I am using Avast Antivirus 11.1.2253 with virus definitions version 160330-3 on a Windows 8.1 and a Firefox browser. The issue: While reviewing some SO ...
4
votes
1answer
163 views

How to remove cryptowall encryption

Please help me urgently, Because My all files are encrypted by unknown virus named, 'CryptoWall encryption'. I attached one screenshot, which is provided by this virus.
15
votes
7answers
41k views

Can system restore remove virus from the computer?

Can a system restore to a past time remove the virus from the computer?
-2
votes
2answers
144 views

How to stop every batch file opening as a process named cmd.exe as seen in task manager

This is very complicated. I'm developing a malicious batch file just to test myself. This will be done at the startup. what I have is Three + Six (hidden) Batch Files. First file makes six other ...
2
votes
3answers
31k views

Laptop is asking for password (which I never set), even when without hard-drive

One day my laptop got infected by a virus, and I cleaned all those suspected infected files with Avast! Antivirus. I didn't check what kind of files are cleaned, since there are hundreds of it. Now I ...
-3
votes
2answers
69 views

Youtube link gave me a virus?

I was watching a Youtube video, and I then clicked on a "View all replies" link under a comment. I tried this again 2 times, and none of the clicks had worked. Immediately afterwards, three console ...
1
vote
0answers
33 views

Force Desktop OneDrive to Prompt for Password

I use the Windows 8 implementation of "Desktop OneDrive" to create and access files stored in my OneDrive account. My OneDrive login is also my Windows login so that when I'm using my computer all my ...
0
votes
0answers
24 views

Power management issue with laptop

I have been having the following issues ever since installing a virus back in 2014: Cannot wake up from sleep, Shutdown doesn't shutdown the computer itself only the OS, and restart restarts ...
1
vote
0answers
69 views

90-100% Disk usage after command window popped up (unprompted), some commands/processes showed and disappeared

It happened pretty quickly and I didn't notice exactly what happened in that command window (MS-DOS style). I ran Norton Power Eraser, Malwarebytes and have Norton Anti-Virus on all the time. When it ...
1
vote
1answer
142 views

Is it possible to report a virus distributor?

A friend of mine recently fell victim to a hybrid keylogger+remote access virus. The creator of the virus was kind enough to hard-code his/her IP address into the virus itself. Is it possible to ...
3
votes
2answers
78 views

How do I stop this active malware alerted by Avast?

I am not knowledgeable on how to find adware/malware beyond scanning for it with whatever protection software I have. I avoid suspicious websites and often get popups from Avast if a page is infected ...
25
votes
12answers
3k views

How can I explain what a computer virus is to people who are not familiar with computers and programming?

I have to teach a group of non-CS students what computer viruses are. The course material contains only definitions and some details about what those viruses do. But those things are known to everyone ...
0
votes
0answers
72 views

Decrypting CryptoWall files

My computer has been infected with the CryptoWall virus and many important pictures and videos on my computer have been encrypted. When i start Windows i get a message that says that RSA 4096 ...
3
votes
0answers
107 views

How can I view command prompt history after the window is closed on Windows 10?

I saw in the morning a command prompt window for just one second. After the command finished the window was closed. I would like to see, what command was run before it closed. Is it possible? I know,...
0
votes
2answers
129 views

Why does antivirus on my host machine act up when VirtualBox is infected with a virus?

I'm testing vulnerability and severity of certain viruses on my Oracle VirtualBox (Windows XP) and virtual machines internet connection is set to NAT. The issue is that my actual HOST PCs (Win10) ...
-1
votes
1answer
46 views

WD external hard drive some folders can not be viewed due to a possible virus?

Now I am using a windows 8.1, Samsung laptop, with WD Elements 1tb. The problem is one day some folders in my external drive decided to not show up. I figured it might be due to some virus affecting ...
6
votes
4answers
2k views

Most of my files in my Windows 8 got encrypted; Windows is still running

Around 90% files of my files, including *.doc, *.jpg, got converted into *.micro! There are two files left: help_recover_instructions+iyf.html help_recover_instructions+iyf.txt These files say: ...
-1
votes
1answer
40 views

Infection with virus just by extracting an archive (zip/rar/iso)?

is my Computer compromised with a Virus, when extracting an archive like zip/rar/iso with WinRAR, which contains an (Virus-)downloader.exe even when i didn't start the executable? and the Anti Virus ...
0
votes
2answers
3k views

Is there a possible connection between a Microsoft Redistributable and a virus?

I have a question about Microsoft Visual C++ Redistributables. I understand in general that I - a complete amateur - should not remove them. But - there are 7 all of which were installed when I ...
3
votes
3answers
5k views

Will Windows viruses infect RAR or ZIP files?

I heard from some techie person that .rar and .zip files never get infected by viruses. Is this true? If yes, then why such behavior?
1
vote
0answers
83 views

Canon MX420 series MP Drivers

A couple months ago I realized there's an alien software installed in my computer, Canon MX420, I know because I am using EPSON and not Canon, so I decided to uninstall it but it failed, reason, used ...
2
votes
1answer
291 views

Windows 7 Software Driver Installation out of nowhere with Asian symbols

I got the following Software Driver Installation screen out of nowhere. Screen language is in German, so that is fine. I quickly aborted the search attempt. What is/was that? Here is the ...
0
votes
0answers
86 views

Internet Explorer 11 browser recently became sluggish and unresponsive in that when I entered a valid URL I would get a blank browser window

In the last 3 days, I noticed my Internet Explorer 11 browser recently became sluggish and unresponsive in that when I entered a valid URL I would get a blank browser window each time. I have a new 64-...
0
votes
0answers
156 views

Decrypt files encrypted by LeChiffre ransomware

Over the weekend, my personal server got hit with the LeChiffre ransom ware. Unfortunately, they were able to get in due to an insecure Active Directory account. I've since disabled all accounts and ...
0
votes
1answer
39 views

Reinstalling Windows and removing viruses from other partitions

Does reinstalling a fresh Windows 10 on partition C remove viruses from other partitions, e.g. D & E, of my hard drive?
5
votes
1answer
238 views

Can my Linux-mint become vulnerable after updating?

According to Linux Mint's blog post: The website of linux-mint is hacked and some ISOs are replaced with backdoored operating system. I am installing my operating system from a few weeks ago. ...
0
votes
0answers
25 views

How to analyze a suspicious traffic under linux machine?

Often under Linux machine, networks are protected by firewalls. This protection, though necessary, do not detect external attacks. Indeed, a Firewall is designed to block unwanted network flows while ...
0
votes
1answer
290 views

Redirect pop-up to wonderlandsads.com malware for webbrowsers [duplicate]

My PC has been infected with a malware that opens pop-up to some ads, mostly in my native language (Persian) but from (wonderlandads.com), when I click on a link or in an input box in StackExchange ...
-5
votes
1answer
81 views

Is virtualbox a virus? [duplicate]

I know a lot of people have asked this before, but I just wanted to clarify, because when I was in my virtual desktop, and I went on a site and my antivirus on my host machine went off saying that ...
1
vote
1answer
5k views

bcdedit /deletevalue safeboot error

I cannot boot into my Windows version due to a virus, I was able to boot into another partitioned copy of Windows and access msconfig, which I then selected the virus ridden partitioned and checked "...
2
votes
2answers
564 views

Purpose of :A when creating virus (Ethical Hacking please)

I am studying how to make simple virus (for Ethical Hacking in Virtual Computer) This video gives demonstration, https://www.youtube.com/watch?v=vkxtOr2RLbY In short, you create .bat file with ...
0
votes
0answers
27 views

Dialog Box pops up every few days

This dialog box pops up automatically every few days, I have no idea what it is. I ran a full scan with my anti-virus but it didn't detect anything.
2
votes
6answers
723 views

Infected Computer Behavior Signs

I'm wondering if anything atypical of your computer can be a headsup for a virus/malware infection? If all of a sudden my sound panel is acting funny, can it be a sign of a virus? If I suddenly can't ...
2
votes
3answers
54k views

Files hidden on USB hard disk because of virus, how to clean?

I have 1 GB hard drive with files hidden on it due to a virus. All of its contents were gone after a virus got in when I gave the drive to someone else. After research found that it was a virus may be....
-4
votes
1answer
190 views

Fat fingered YouTube, got some “fatal-crash” website [closed]

So I was typing in “youtube” (in Chrome using a Windows 7 machine) and fat fingered it to “gyoutube,” I ended up at some site with the address http://fatal-crash.xyz with a bunch of additional stuff. ...
0
votes
0answers
50 views

CPU is fixed at 100% usage

I would like to start by saying that I'm aware that there are a lot of questions with the same title but I would like to say that they are very specific to their own problem. Unfortunately my problem ...
1
vote
0answers
50 views

Windows And Application Settings Disabled By Administrator/Organizer on a PERSONAL computer

I am not able to change some of the settings because they are enforced by my Administrator/organizer, but the catch is that my laptop is a private/personal computer that I purchased myself and is not ...
1
vote
1answer
3k views

EaseUS Partition Master appears to have installed suspicious software BreakingNews_silent_134.exe

I just installed EaseUS Partition Master Free Edition on my Windows 8 machine. Immediately after install a News.com Widget appeared on my screen that I have never seen before. Chrome and IE have both ...
0
votes
1answer
39 views

PC infection suspected [duplicate]

I have a feeling that my PC is infected with a RAT (remote administration tool). It all started when I logged on an mmorpg (online game). It's not popular and at this time I had a port open by me ...
16
votes
5answers
17k views

Unreasonable RAM usage in Windows 7

I have a fresh install of Windows 7, and my RAM in normal startup goes up to 2.5GB. I looked at Task Manager, and there's at least 1.5GB missing from there and in Resource Monitor as well. There's no ...
4
votes
1answer
83 views

Does Keepass protect passwords from malicious software like viruses?

If a computer got infected with a virus or a trojan and the user interacted with Keepass, is there a chance that the malicious software would be able to get the password database? In other words: ...
4
votes
4answers
132 views

How can a flash drive spread a virus?

How can a virus be spread from a USB flash drive besides the autorun.inf? Can boot sector viruses infect thumb drives?