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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1answer
12 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, ...
0
votes
2answers
98 views

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

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
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0answers
10 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
26 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
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1answer
74 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
4k 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
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1answer
10 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
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2answers
68 views

Does Anti-Ransomware software work? [on hold]

Both malwarebytes and bitdefender have created Anti-Ransomware software. Its principle should be just stopping any encryption happen in files. Does the software work and make it much safer?
0
votes
1answer
64 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? ...
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
56 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
24 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
48 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 ...
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 ...
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votes
2answers
27 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
61 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)
34
votes
7answers
45k views
1
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1answer
89 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 ...
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votes
3answers
115 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
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votes
0answers
220 views

How to remove Cerber virus from my PC

.Cerber - This malware affected most of important data in my laptop (Pics, Videos, Pdf files etc). I tried to scan with antiviruses but all in vain.How to recover the data?
15
votes
4answers
9k 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
12k 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
99 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 ...
5
votes
3answers
2k 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 ...
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
45 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
45 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 ...
-2
votes
0answers
9 views

Hidden processes causing huge increase in ios data usage? [migrated]

On my first iphone the data usage was both reasonable and logical at the beginning, but a couple months in and I was seeing a ridiculous increase of >5x usage. I started off average 5-8 gb/month and ...
-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
86 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
4answers
563 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 ...
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votes
0answers
49 views

Is deploy.static.akamaitechnologies.com a virus?

I was using a program called TCPView to view network activity and see if anything nefarious is connecting to my computer. I noticed that every once in a while a good amount of data was transmitted to ...
0
votes
0answers
41 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
147 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
40k 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
131 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
29k 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 ...
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votes
2answers
36 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
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0answers
29 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
17 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
68 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
67 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
63 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
63 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 ...
0
votes
2answers
71 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) ...