A computer virus is a program or piece of code that is loaded onto your computer without your knowledge and runs against your wishes.

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0answers
5k views

Free collection of virus test samples [closed]

You want to check functionality of your antivirus. virussign.com can do that for money. Is there a free virus base?
0
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1answer
402 views

Site Hacked - Where to go from here? [closed]

Our magento based e-commerce site was hacked over the weekend, the hackers managed to gain access to the magento files and embed some scrambled code into the get.php file in the root directory. I ...
8
votes
2answers
14k views

Advice on what to do after being hacked?

After running a system scan earlier today, I found that my computer had been infected by a trojan horse. My reason for running the scan was because Windows kept shutting down and then recovering. ...
3
votes
1answer
208 views

What is the security purpose behind the “enable editing” of MS Word?

Whenever I open MS Word documents from my email, they open in "Protected View" with edit options disabled by default. As per my understanding, the hyperlinks used in the main document would be linked ...
-1
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1answer
187 views

Malware persistence past a drive wipe? [duplicate]

Are there any known instances of malware persisting past a drive wipe and reinstall, through modified bios, or firmware on one of the machine components?
4
votes
3answers
609 views

Virus with PGP Encryption Preventing Virus Scan

A user reported having a virus that was causing pop up windows asking for money. When he turned on his laptop and logged into PGP encryption (whole disk) the desktop quickly showed but then a white ...
1
vote
2answers
2k views

Somehow unexpectedly my computer got infected with malware

So I consider myself a pretty conscious computer user. I run Windows 7 SP1 Pro 64bit and I update it. For surfing on the web I use Firefox 20.0.1 - I keep it updated. I also have NoScript and AdBlock ...
5
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1answer
2k views

Unable to get rid of Sality on my Dropbox

The story... As a group of rookie security researchers who deal with malwares, viruses etc., me and my team-mates sometimes do commit mistakes in handling the binaries. And so, I ended up infecting ...
5
votes
2answers
632 views

I found a virus on my USB stick. Now what?

I discovered a file, named autorun.ini on my USB flash drive: [AutoRun] ;FjYfoT ;jpId UagEbddsb PCjo oPEn = efhcnu.exe sheLl\open\DEfault=1 ;utvDpsMqpT dDustbemW XyAy WeywFbvaVA eQnK ...
5
votes
4answers
3k views

How does a trojan like Trojan:JS/BlacoleRef.BV infect a website?

Today I find out my website is infected with Trojan:JS/BlacoleRef.BV. The server is a shared server from a hosting company. How does a trojan like this get on the webserver?
-1
votes
2answers
192 views

Inspecting “tidynetwork” element in chrome to find its origin on my laptop [closed]

Anyone heard of the "TidyNetwork" virus/malware? Is it possible to determine the origin of the ad that is created on web pages by Tidy by inspecting the element using developer tools? I am using ...
7
votes
4answers
13k views

Security issues with allowing Dropbox installations on client PC's in our organisation

Does anyone know if there is any good reasons not to allow Dropbox installations on our client PC's? All the PC's have antivirus installed and running. I know it is an additional attack vector to ...
6
votes
2answers
404 views

Statistics on purposes of viruses/malware

Are there any resources that analyze the purpose or goal or the major viruses/malware out in the wild today? For example, what percentage are used to construct botnets (for DDoS or something else)? ...
0
votes
1answer
756 views

csrss.exe process

I've experienced some odd behavior lately (cookies being cleared in Firefox, forcing me to log in again). Antivirus scans (MS Security Essentials, MalwareBytes) aren't showing anything, but Process ...
2
votes
2answers
936 views

New Undetected Virus?

I am having difficulty with my laptop right now. All of a sudden some partitions would contain a link to the previous contents of that partition. For example: Before: Partition T:\ ...
-1
votes
1answer
144 views

Windows “Send to compressed file” creates an image? [closed]

One of my friends windows laptops (which I don't have access to right now) has in the recent past had a virus (where .doc files were converted to .exe files) which we dealt with. Now when she ...
5
votes
5answers
1k views

Windows 2003 Enterprise infected by Conficker; post-infection problems continue

I used various tools to remove Conficker, and I pretty much succeeded, but I've had recurring problems afterward. It won't update anymore (with the following error message: 0x800706B5) I tried ...
4
votes
4answers
846 views

Site constantly getting infected

I am the webmaster of some websites running Typo3, 2 of which are getting infected constantly. These 2 sites are being owned by the same client. Something happens on those 2 sites that causes ...
3
votes
2answers
376 views

Can a virus infect source code files with dangerous data?

If a user was infected with a file altering virus is it possible that checked in code (files containing text) to the source control could contain dangerous properties. I ask this after this got me ...
1
vote
1answer
442 views

I think I downloaded spyware from an ad on tortoise-svn site

The other day in a rush to quickly download and install tortoise svn, I accidentally clicked on a big download button on an ad on their site and installed something that I don't see on my computer. ...
1
vote
2answers
440 views

Where does mutation engine resides in Metamorphic \polymorphic viruses?

I was reading about Metamorphic & polymorphic viruses .. to what i understood ; they both uses mutation engines to avoid detection by anti-viruses, as the polymorphic encrypts\decrypts its code ...
1
vote
2answers
554 views

Brute force a GUI login?

I know I have read somewhere that the reason the UAC prompt in Windows 7 was employed is that viruses that would supposedly execute privileged instructions won't be able to "click" the confirm button ...
3
votes
2answers
221 views

Why some antiviruses detect viruses and some not?

I am curious why some anti-viruses detect viruses and some do not. From what I found online, antiviruses parse the binary files and check the sequence of code which is malicious(exists in virus ...
6
votes
2answers
262 views

Process authentication for Linux

Is there any possibility to authenticate a running process in Linux to be sure that this is the original/right one? I know that an Linux operating system is only that secure like the way you use it. ...
2
votes
2answers
638 views

keylogger detection by listening network

It is known that malware often uses keyloggers. Also some viruses aren't detected by antiviruses, therefore some viruses, especially APTs could stay in a system for so long without any detection. What ...
2
votes
5answers
362 views

Safer way to access paypal, Mobile or Pc?

I often find it difficult to chose if it is safer (in any context) to log in to my paypal, or other similar banking accounts using my Nokia or my PC. Maybe, I am assuming the fact, that since I do ...
6
votes
2answers
260 views

How does the predator network prevent outside control by an attacker?

I read several articles saying some of the command and control fleet for the US robotic attack planes may have been infected with a virus. Does this command and control system communicate with the ...
4
votes
1answer
601 views

A couple of redirects after clicking in a link, what are they after?

I got an mass email from an friend containing only this link (made not clicable on purpose): http://www.casadelapiedra.com/components/com_content/id876757355.php I imagine she is got some kind of ...
2
votes
3answers
464 views

How hard it would be to infect a system with malware through a portable web browser

If I use a portable web browser on a USB device like Google Chrome Portable how hard it would be to get infected by a malware/virus in the system to which the USB device is connected? Google Chrome ...
2
votes
2answers
2k views

How is it possible that a virus can infect the system if the browser is started with non-admin rights

If I open my web browser (for example firefox) in Windows 7 with activated UAC as normal user (non admin) a virus - which uses a security leak in my browser - will only gets privileges of the normal ...
12
votes
5answers
881 views

Detection and analysis of unknown malware

Suppose I have a binary which is suspicious. How can I determine whether it is malicious, and if it is, reverse-engineer how it works and what it does? For example, maybe using static analysis? Are ...
2
votes
4answers
860 views

Detecting malware hidden in P2P traffic

Consider a network situation involving (only) Peer to Peer traffic in medium sized network. For the sake of convenience, a simple P2P application like DC++ may be assumed, although I am aiming at a ...
1
vote
1answer
148 views

How does window.w3ssss hack occur

Recently a .Net MVC 2 application on our server was infected with a virus / hack, it added some Javascript to the index.aspx pages of the site. While we have cleaned it up, I have not been able to ...
5
votes
6answers
701 views

How can a novice find proof of a system compromise?

I am almost certain a colleague has installed a keylogger on my system. I am totally new to IT security, but have substantial linux / windows / programming experience. The system I believe is ...
2
votes
3answers
143 views

Is possible to know if increased marketshare means more viruses?

I'm having an argument with other developers about why more "viruses" exist (including all forms of external attacks, exploits, etc) in Android vs iOS. Like with Windows vs *nix, the main idea is that ...
0
votes
1answer
205 views

is there any program that can tell me which files have been transferred from my computer thru the web

Is there a program that can tell me which files have been transferred from my computer thru the web? So if I have virus on my computer that transfer files I will know about it according to the files ...
8
votes
6answers
780 views

What is preventing the widespread common use of MAC-type systems?

Overall question what is preventing the uptake of MAC systems such as SELinux/AppArmor in corporate and desktop computing environments? Why don't you think it isn't already widespread? I do not ...
3
votes
1answer
269 views

Potential services.exe infected file?

I was asked by a coworker to help solve a problem with a remote client site through VNC. Immediately after connecting I've started noticing some strange behaviors that I am lead more and more to ...
3
votes
5answers
1k views

How can I know if my PC is getting infected?

I have installed an antivirus, but as no antivirus is perfect, what can I do to diagnose if my PC is getting infected? For example, keeping a close eye on what programs and tasks run when I turn my ...
1
vote
3answers
192 views

Where can I find information on existing viruses?

As part of my research, I have created a small malware corpus which I'm conducting my tests against. I would like to categorize them based on Metamorphic / Polymorphic / etc. I am not sure if this is ...
1
vote
2answers
238 views

Dealing with a (possible) virus on both MacOSX and iOS

The symptom: On MacBookAir, in Safari, FF and Chrrome, when accessing www.google.com, I get redirected to a http://developer.yahoo.com/yql/ web page. On iPhone, when navigating to google.com I get ...
2
votes
3answers
159 views

How to tell what viruses are covered by your anti-virus software

One of our corporate twitter accounts recently started sending out DMs to its followers. Looking at the content of these it seems we'd become infected with Troj/Mdrop-EML. All computers on our ...
6
votes
3answers
7k views

Is it possible for a phishing link to install a major virus on a Mac?

My girlfriend recently had her university MS Exchange account hacked. The attacker took over her email account and started using it to send thousands of spam emails. After a while, her email account ...
2
votes
4answers
583 views

Virus won't be picked up by Antivirus tools

Today we found a virus / trojan on our network which has thus far: Hidden all files and folders Replaced the hidden files and folders with executables of itself, with matching icons, and renamed ...
13
votes
4answers
1k views

How is a worm different from a virus?

In spite of various online articles, I'm a bit unclear on the distinction between a "worm" and a "virus". Two related questions-- Is there a useful and clear distinction here or no? If so, what is ...
3
votes
3answers
345 views

I found a malicious website embedded in Malware spam. What should I do?

An email is using social engineering to get users to click on a malicious URL that downloads javascript and then runs malicious code. Who should I report these malicious URLs to? (Microsoft ...
4
votes
3answers
1k views

what is the difference between boot-sector virus and rootkits?

I have read the definition for both and also read about a few examples for both the cases. I'm still not very sure what the difference is. Is the difference blurred or are there some specific ...
1
vote
2answers
274 views

anti virus acting up/DNS poisoning

I was running my desktop and the AV deleted a file that it said was a virus (this was not during a scan, just normal usage). Now I'm just browsing the web and I got a couple of DNS poisoning attacks ...
1
vote
4answers
201 views

Infection I can't shut down, disguises process as scvhost.exe [closed]

A little while ago my home machine got hit and I was able to clean out just about everything except this one process. I can't find the origin but it shows in my process manager as scvhost.net by the ...
1
vote
1answer
138 views

Where can I find documented details of virus so that I might be able to find out why I am infected?

My AV detected that some computers in our network are infected with Win32.Sality.Y. Is there any good place I can find the documented details of this virus, so that I can (generally) how the virus ...