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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19
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6answers
2k views

Why do malware creators use such clever technologies for such silly purposes?

Some days ago I got infected by a malware, probably something new and very clever, as it went in unstopped and no scanning tool was able to detect it afterwards (see this question). It was a two-...
0
votes
1answer
286 views

My computer hacked? tcpdump show a connection to an ALLOCATED UNSPECIFIED ip address

13:06:05.345111 IP 192.168.1.101.36218 > 157.55.130.174.40033: Flags [.], ack 162, win 237, options [nop,nop,TS val 688796 ecr 596714815], length 0 This IP address is Allocated Unspecified on ...
0
votes
1answer
368 views

jRAT virus on Linux

I dumbly downloaded a .jar file that contained jRAT. When run, it stalls, gives a FileNotFoundException, then crashes. When I ls'd, the jar was there. When I cd'd out and back in, the jar was gone. I'...
-2
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2answers
217 views

Can my Mac be affected without running the malware?

Can my Mac be affected by malware without running it? For instance, if I download a random file, but don't open it, can it infect my computer?
3
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2answers
596 views

Possible trojan/virus in memory?

I've extracted objects (JPEGs) from processes` memory dumps (obtained with memdump command from volatility framework) and got strange results after searching the memory pages of the main thread of ...
4
votes
2answers
1k views

How can I recover files encrypted by Android ransomware?

My Samsung Galaxy Note II was infected by a virus called the "FBI virus." Fortunately, I've managed to remove the malware but my problem now is that all my files have been encrypted. How can I ...
-2
votes
2answers
429 views

Can an compressed virus still do any harm to an OS [closed]

Let's say you have a piece of malware either as a standalone binary or hidden within a crafted image (two distinct cases). If I compress the standalone binary, can its mere presence as a compressed ...
0
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2answers
4k views

Statistics about malware targeting different OS

Are there any reports or statistics that describe the numbers or types of malware attacks on different operating systems, such as Linux, Unix, Windows, MacOS?
1
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1answer
103 views

Am I safe to see a thumbnail of a downloaded images on Ubuntu 14.04?

I have downloaded an image that someone has uploaded to my website with a public upload form. My intention was to copy the file in a virtual machine and see the image from there; unfortunately, on ...
2
votes
0answers
40 views

Removing malware which is creating temp file and modifying network traffic [duplicate]

I am on OSX 10.9.2, please note I have included several URLs in my post, this is not spam this is due to the nature of the malware. I have just discovered I have malware on my computer after noticing ...
1
vote
0answers
372 views

Extremely suspicious UDP network traffic when idle [closed]

My computer has been using about 7Mbps when idle, it does the same thing even I am playing games and such. This is the Wireshark capture https://www.dropbox.com/s/2khw04atdxlflh3/wireshark2.pcapng?dl=...
1
vote
3answers
2k views

How a trojan allows attacker to connect to remote computer behind a router

According to this article on Wikipedia, a trojan horse can allow a remote connection by opening a random port if it is able to bypass the firewall. I'm not much of an expert of routers and Network ...
0
votes
1answer
487 views

How to execute an exploit without user interaction?

Is there an existing exploit, virus or malware that doesn't need any user interaction? In metasploit for example. No link to clicked, no pdf to open , no vba or exe to execute by the victim.
3
votes
2answers
901 views

How to get rid of an Ad bot?

The issue started due to setting up a proxy server on a PC connected to my network. I then realized that all of my devices that connected to the network, including PCs and phones, are all infected by ...
0
votes
2answers
254 views

Suspicious 2 page, no image Word Docx has 1.7 MB

Can a word document contain virus or harm you in any way? Someone sent me a word docx that has only 2 pages, no image but it's 1.7 MB big. If I use save as to save it with a different name but still ...
-5
votes
2answers
216 views

What is the difference between a virus and a worm ? [duplicate]

The only thing I know is that virus can get into the other programs and infect it whereas worms cannot attach itself to another program.
4
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2answers
4k views

Is there any decompiled source code for the “Flame”/“Skywiper” malware?

When searching for the source for Stuxnet, its relatively easy to come by in one form or another. Although I'm actually curious if anyone has done any work to comment the source and perhaps clean up ...
0
votes
0answers
44 views

Why an infected VM does not affect the host machine? [duplicate]

I installed a Windows XP virtual machine on VirtualBox. The host machine is also a Windows XP. I run 5 viruses on the guest machine, however this does not seem to infect my host machine. Could someone ...
3
votes
4answers
591 views

How do I ensure that my computer is 100% worm-free?

Ok say I have a brand new laptop that was is brand new. Is it true to say that as long as I keep the bluetooth turned off, and I am not connected to the internet, and only copy files that are 100% ...
1
vote
2answers
1k views

Does the EICAR test work on Linux based antivirus scanners?

Does the EICAR antivirus test work on antivirus scanners for Linux? The EICAR test is described in more detail here: http://en.wikipedia.org/wiki/EICAR_test_file The reason I ask is that it requests ...
37
votes
7answers
7k views

Does a virus need to be clicked on to function?

Can a virus infect my Windows XP operating system by its mere presence? I mean, if I copy/paste a virus on my computer and I never click on it, will it infect my computer or will it remain dormant, ...
-2
votes
1answer
134 views

Unrecognizable Icon. Virus?

Sorry I'm not sure this would be the best place but I've noticed this icon recently. I'm not sure what it is and it only pops up sometimes. When it does, I can't click it or do anything to it and it ...
1
vote
2answers
249 views

Buzzfeed just downloaded a binary file to my PC, unasked

The file is binary, named '96748', and it's 12.8kb in size. Ubuntu thinks it's an swf. Thank god I was in a Linux VM and not Windows. It doesn't seem to have done anything, and it's just sitting there ...
2
votes
2answers
404 views

Are there any logic-bombs that execute when the file is deleted?

I want to delete a suspected malicious file from a server. For the purposes of this question assume that the infected machine is Windows Server 2003 or later. Is there any risk in deleting such a ...
-1
votes
1answer
133 views

Problem in downloading and browsing [closed]

My downloads stop completing and some page in the browser appearing blank or with text only without css or js and so on, some program after complete return me a message when trying to start installing:...
0
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3answers
4k views

Is JavaScript malware as dangerous as native viruses? [closed]

Can JavaScript malware be as dangerous and damaging as more traditional viruses that are programmed mostly in native APIs?
-1
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1answer
4k views

Virus affecting MS Office files

(I'm not sure if here is correct place for asking this question) I've come across a strange virus that changed contents of all MS Word, Excel, PowerPoint and image formats. It places this ASCII ...
18
votes
7answers
1k views

How to deal with a person who gets easily fooled by internet and mail scams?

alternative title: How to deal with a person who has gotten paranoid and doesn't want to go online anymore? A person, who has over the years been scammed many times, by bad spam/fraud emails, and ...
2
votes
3answers
422 views

How isolated are 2 operating systems on 1 harddisk?

Lets say I have 2 windows dual booting on the same harddrive (windws 7), How isolated are they? I am thinking that there should be up to date antiviruses software on both Windows, and they should be ...
7
votes
2answers
283 views

How serious is a local virus in terms of network security

My colleague got a notification on his machine of a possible virus (through the virus scanner that is installed by default on all machines). He called up the tech department, and they simply told him ...
0
votes
1answer
462 views

How safe is virtual box without internet [duplicate]

I am running a windows 7 virtual box without internet connected. Internet is, however, connected to the host, and I allow any internet access to and from the host. On the guest platform I am working ...
1
vote
3answers
97 views

Completely Protected Virtual Folder

I am a Python / C developer currently working on a extremely important piece of software. The details of the code will not be mentioned, and the only place the code appears is on my own hard drive, in ...
0
votes
4answers
213 views

Can a virus on the host affect the VM guest [duplicate]

let me explain my problem. The wifi on my macbook suddenly stopped working so tried to use my usb wifi adapter on a linux VM. But the funny thing is that nothing works on the guest vm either... Well ...
8
votes
3answers
983 views

How do I report new malware?

I have a new piece of malware that isn't detected by current anti-virus vendors. How do I report it to them? I want to do a good turn and help protect as many people as possible. What is the best ...
3
votes
3answers
152 views

Can viruses be transfered across incompatible architectures?

I am needing to run scans from one computer/laptop/device to another computer in a protected system. I am worried that plugging in my scanning computer to the protected computer might cause some risk ...
0
votes
1answer
152 views

How can I set up a secure virus laboratory? [duplicate]

I've been playing around with virtual operating systems for some time and began wondering: would it be possible to set up a virus laboratory in a virtual machine? If not, are there other ways that do ...
0
votes
1answer
4k views

How to backup files stored in a possibly infected computer?

I am to reinstall an old Windows XP installation. Before I format the drive, I have to backup some data (~200GB) like .doc files, pdfs, photos to an external hard drive. My concern is that this ...
-3
votes
3answers
1k views

I need to know if this is a virus [closed]

Someone has been sending me these weird emails and I am starting to get curious about it. The latest one has an image of a broken image linking to this address... I wonder if you guys could help me ...
1
vote
2answers
2k views

Is OSX vulnerable / susceptible to Gameover Zeus

I've heard a TON of vague info on Gameover Zeus recently. One detail I can't seem to find is if it affects OSX? when I say I can't find it I mean from a credible source. I've found loads of people ...
0
votes
1answer
39 views

Safely converting untrusted files with Microsoft Word in a web service

I'm made a small web service that gets urls, download them, and convert them for another format. Most of those urls are documents (doc, docs,...). Basically, I'm open them with MS-Word and convert ...
6
votes
3answers
1k views

Is there a hash algorithm that can identify similar files or strings?

Is there a hash algorithm that will help you identify similar files or strings? For example, the hash for ABC and XBC would be similar rather than radically different as is usually the case. I know of ...
-1
votes
1answer
1k views

How can we find out the fully undetectable virus and kill it in our computer? [duplicate]

As I know, most hacker can crypt the virus to bypass all antivirus. Even famous antivirus like kaspersky and avast doesn't know it. So, is there a good way to find out the FUD virus and protect from ...
0
votes
1answer
490 views

How to combat and prevent a lpcloudsvr302 and bk-coretag.js Virus?

I recently came across a computer that was infected with a lpcloudsvr302 and a bk-coretag.js Virus. I did some research about the two Viruses and realized that their is no reliable source that helps ...
10
votes
4answers
4k views

Is it safe to serve any user uploaded file under only white-listed MIME content types?

Let's say I develop an application that, Allows any user to upload a file of only white listed mime content type and extensions (word and pdf). Serves those files with the allowed extension and ...
1
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1answer
1k views

Computer worms, propagation and exploiting vulnerabilities

I have been referred here to ask this question, so I am doing a research on computer worms, I have been through several sites and a few caught my attention, I have learnt that worms propagate through ...
0
votes
1answer
530 views

How can the data in a computer system become corrupted when it is copied across a network? [closed]

Doing a report. Having trouble understanding the concept. I need to talk about the following topic in relation to: How can the errors be detected? Can they be detected and corrected? If so, by ...
-2
votes
1answer
824 views

Website starting up on PC boot [closed]

today i boot my PC when i got home & a russian website about games & naked chicks openen up instantly during general boot of the desktop. I thought "WTF", shut down my PC and restarted it. ...
3
votes
0answers
144 views

At what point does a piece of code become a virus and at what point does this become illegal? [closed]

I read a lot about viruses being illegal, but at what point does a piece of code become a virus and become illegal? Information enters and leaves our computers on a daily basis and often times some ...
0
votes
2answers
1k views

My website redirects to an unknown website [closed]

I coded my own website and uploaded to a host. Some days ago I realised that in specific page suddenly redirects to an unknown websites, until 3-4 redirects. The redirects are: mywebsite.com/smth-> ...