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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331
votes
18answers
259k views

How can I remove malicious spyware, malware, adware, viruses, trojans or rootkits from my PC?

What should I do if my Windows computer seems to be infected with a virus or malware? What are the symptoms of an infection? What should I do after noticing an infection? What can I do to get rid of ...
2
votes
5answers
16k views

How do I permanently remove the MSR Privoxy?

So recently I got this "virus" from downloading something. This virus keeps on spamming ads and underlining text on a web page to cause you to click a link that will pop-up a new tab. It usually links ...
17
votes
4answers
2k views

Is it safe to download and burn a disc image on an infected PC?

My PC is infected. If I download and burn linuxmint.iso on the infected PC, will the CD become infected also?
3
votes
2answers
2k views

Is this a virus? Not sure how to read the source code. This is a txt file

<!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head> <link ...
0
votes
3answers
13k views

How do I view files inexplicably hidden on an external hard drive?

Yesterday I traded some files with a friend by hooking up an external hard drive to his computer. I had created a folder with some files in it for him and likewise created another folder for him to ...
3
votes
1answer
8k views

Many Personal Files turned into .micro files

Yesterday, I shut down my computer and went to sleep. I woke up today, went to school, came back and now when I turn it on, it shows this .TXT file. Many of my files have turned into .micro files, and ...
-1
votes
0answers
20 views

windows 10 very slow, flash player not working, whole environment seems blocked

My PC has been upgraded to Windows 10, some months ago, and recently I'm experiencing a lot of problems: In much cases Flash Player is not working (I'm running it under Google Chrome) The Windows ...
0
votes
1answer
25 views

Sure way to get rid of a trojan [duplicate]

I think I have a trojan. svchost.exe is consuming %25 cpu all the time, and my Microsoft Security Essentials reports a different virus every half an hour or so. From what I understand the trojan is ...
0
votes
1answer
30 views

Is checking without a on boot check enough after clicking a malicious link in a mail?

After quite a few years it seems like I now myself fell over a malicious mail. Now my question is if what I have scannerwise active and also what I did is good enough to feel save again? The Mail ...
-1
votes
1answer
21 views

Virus folder can't be deleted - WindowsApps [duplicate]

A few months ago I noticed that on my HDD there is a folder called WindowsApps and I tried to delete it because I know that it wasn't system related because my OS is on my SSD. I had no perm over it ...
0
votes
3answers
4k views

CPU usage 99% constantly

My computer is running windows 8, and suddenly started running slowly. When I open the task manager, it tells me that the CPU is using 99% - sometimes the disk usages jumps up as well. The strange ...
1
vote
2answers
79 views

Chrome runs downloaded .exe without warning you [closed]

I was tricked into downloading a .exe file in the Google Chrome browser, expecting a simple text file. I did click on the link that started the download, and I did click once on the download on the ...
0
votes
0answers
27 views

Is it possible that I got a virus without clicking what I downloaded? [duplicate]

A couple of days ago I accidentally downloaded a file that looked very shady. My antivirus (Avira) pinged me that the file was suspicious, so I immediately deleted it, and then cleared my browsers ...
2
votes
1answer
5k views

How to remove write protection from USB stick

I have followed up the below process in cmd: DISKPART> attributes disk clear readonly Disk attributes cleared successfully. Even if I do that it displays Read-only:yes: DISKPART> attributes ...
-1
votes
0answers
5 views

Unwanted android apps keep reinstalling [migrated]

​Recently I received a phone through a special offer with a company. (see here) The phone doesn't have a brand name printed on it but mentions on the back the name of the company through which I ...
-2
votes
0answers
26 views

I'm connected to unwanted Ip's derivated from chinese tencent virus. Want to remove them ASAP

I got a virus a couple of days ago and went through a good cleaning process in order to get rid of all that. I used MwB to do most of the work, then proceeded to eliminate the remaining files. I ...
0
votes
2answers
95 views

Some advise about locky virus?

All my files have been encrypted with locky virus: I tried CCleaner, M.S. Forefront, and some other antimalware programs; Can anyone give me some advice about this virus removal?
1
vote
1answer
3k views

Computer going to sleep while being used

i just got my laptop back from a service, one of the hinges broke and i had it replaced. The problem now is that it keeps going to sleep while i'm using it(not that i'm running a program, i'm typeing ...
0
votes
1answer
35 views

CTB-LOCKER and possible future decrypt hack. Do I make a HD ISO image before formatting?

my second question here! :) A friend of mine has the files on his laptop (Windows based OS) hard-disk encrypted by the ransomware CTB-LOCKER. I don't know the CTB-LOCKER ransomware version/type, ...
-1
votes
2answers
136 views

Can You Get a Virus Simply by Opening an Email? [closed]

The German Federal Bureau for Security in IT ("Bundesamt für Sicherheit in der Informationstechnik") regularly informs recipients of a newsletter about current IT security threats. On 28 April 2016 ...
0
votes
0answers
11 views

How do I find the cause of this virus (website opens 20+ windows) [duplicate]

A friend computer has some sort of virus. At least one site (non https) the browser (firefox) tries to open 20+ popup windows. Firefox doesn't open them but occasionally one gets by or the url ...
0
votes
1answer
34 views

Windows 10 no events no update history, virus?

Made up a new windows 10 computer 2 months ago after last computer got infected by cryptolocker by inexperienced user. New computer has been in use daily since without problem, however was left on for ...
0
votes
1answer
111 views

Use ClamAV to scan large files

We have a Linux VM running Xubuntu with ClamAV installed. We would like to scan files larger than 4Gigs, using the clamscan command preferably. I can use the --max-filesize=x and --max-scansize=x ...
13
votes
3answers
5k views

How to know if your computer is hit by a dnschanger virus?

The Federal Bureau of Investigation (FBI) is on the final stage of its Operation Ghost Click, which strikes against the menace of the DNSChanger virus and trojan. Infected PCs running the ...
0
votes
1answer
11 views

Does EMET auto update itself?

I cannot see this option and no answer after google for it. May be it is not good to update update itself since it suppose to be customized so if it updates itself would screw up the profile? ...
0
votes
1answer
68 views

Preventing Anti virus conflicts

I have HitmanPro, Anti-malwareBytes, and ESET installed on the computer. Is there a way to disable the real time functions of one or more of these to prevent conflicts and improve performance? ...
3
votes
1answer
66 views

Is my router infected? DNS settings affected

I see that when I browse on my mobile devices (phones, tablets) in my network, the browser gets redirected to malware/adware that says my device is damaged and I should repair it, install some ...
0
votes
0answers
12 views

How to remove hidden folder shortcut malware [duplicate]

How to remove the virus/worm which creates a shortcut that runs a payload whose name is randomly generated. It puts the current content under a hidden folder. And displays the boobytrapped shortcut ...
2
votes
1answer
39 views

How can I stop files infected with ransomware from replacing my cloud backup?

I saw this question on Security.SE and it got me thinking about my way of backing-up my data. The way I do it is by storing my most important data (including kind of personal things) on a folder on ...
0
votes
1answer
51 views

Right click on infected file in Windows 10

I've right-clicked on a very-likely infected .jpg file in Windows 10. I did it for running a virus scan with Avira (in the context-menu), and later I deleted it. Only after I realized that when a ...
-5
votes
2answers
28 views

vbs file through email [closed]

I have this vbs file. Someone send it to me via email. Can anyone tell me what does this file do ? dim M M = "Chinese names" S = "" Dim N n = 0 dim NN NN = "ede" do until n = Len(M) n = n + 1 S = S ...
0
votes
0answers
134 views

where can I find a Locky Ransomware virus samples?

I need a locky ransomware virus sample to test it on VM for my project. Where can I get one working sample ?(Any microsoft word or excel files would work)
35
votes
7answers
46k views
1
vote
1answer
102 views

How does Bitdefender's Crypto-Ransomware Vaccine work?

I have read responses (66 currently) but still have no idea how this tool works. "Razvan Stoica says: It’s a vaccine, but it can (and probably will) be updated against new strains, hence the need to ...
-3
votes
3answers
135 views

Received a .vbs on Skype and ran it

I received a .vbs file on Skype and ran it.. Please let me know if it does anything? the code contained
15
votes
4answers
10k views

How to be certain you don't have a virus when anti-virus scanners find nothing malicious? (Windows 7)

I recently spent many hours troubleshooting a laptop that could not connect to the internet. The laptop exhibited no other unnatural behavior, and so my first thoughts were to try connecting to other ...
0
votes
0answers
15 views

What kind of virus I get? [duplicate]

I think my window7 hit by some virus. My desktop background go black, all desktop icon are disappeared. Folders on desktop are all empty,but the folders are still there. All shortcut icons on ...
7
votes
5answers
13k views

Is it possible to detect a virus with taskmanager?

If I would have a running virus on my system, would I be able to see the process in taskmanager? I mean, would it be possible for a running virus to circumvent the taskmanager so the process doesn't ...
3
votes
0answers
130 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
25 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
51 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
47 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
39 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
95 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
710 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
45 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
156 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
137 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 ...