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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0
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2answers
141 views

VM security, how to access main OS

Is there any way for me to access the main computer if the VM has been infected? Let's say that I am running Debian or ubuntu in a VM and the main computer uses Windows (or other way around just so ...
1
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1answer
814 views

Orbit Downloader botnet program removal [solved]

Recently (shortly after midnight on 10/8/2013) I installed and ran Orbit Downloader. After learning that the latest version (4.1.1.8) has a botnet-like module included I immediately stopped the ...
2
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2answers
395 views

Using a virtual machine as a buffer between USB media and OS

I was directed here from the Unix & Linux site. I've gone through some of the related questions, but they seem to be more concerned about whether a guest OS can access the host OS in someway. ...
0
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2answers
291 views

Random File downloaded

Okay so I was setting up stuff on my new mac earlier, downloading flash and office. They both downloaded and installed smoothly, but after I noticed a weird new file in my 'downloads' folder: ...
2
votes
1answer
267 views

Where's the virus in this web site?

I made my friend go to this web site and it immediately infected his machine with malware (AntiVirus SecurityPro). It happened just by going to the front page. It seemed the malware started up, but ...
1
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3answers
865 views

Text changing virus

Can malware change words that I have typed and then saved in the computer'? If so, how likely is this?
1
vote
1answer
459 views

Scan Source Code for Potential Viruses

If you are sent a program written by someone so that you have the complete source code, how would you go about scanning the source code for any potential viruses/malware? Note: While bugs and ...
0
votes
1answer
101 views

Java is running even after it is disabled [closed]

To prevent adds and pop-up that seduce users to install or download viruses I have disabled Java. But I have noticed that even with Java disables Firefox is still running it. The pop-ups are coming ...
2
votes
2answers
948 views

Can malware come in any format?

After reading @Iszi's answer to this question he states Viruses attached in e-mails do not only come in .EXE files. They can be any form of document - PDF, PPT, DOC, XLS, SWF, etc. Are there ...
20
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6answers
4k views

Malicious Links that Respond to Browsers but not curl or wget

There are some emails with links to people's cracked websites with a malware download Like this kind of email: fake DHL pack station email ... the links often take the form of: http:// ...
2
votes
3answers
2k views

How can winlock virus change Windows Registry without admin permission?

When you try to install program you'll always asked about administrator permission. Same thing when you try to user 'regedit' command. So I'm interested in how does this virus works. How can it edit ...
8
votes
3answers
1k views

Can I use the same keyboard on both my infected and non-infected computers?

I have a computer which is virus infected. Can I use the same keyboard on both it and a "safe/clean" computer without fear? Keyboards these days seem to come with built in software and thus must ...
5
votes
6answers
9k views

Can i get 100% protection from virus by using Deep Freeze?

I have recently installed an application called 'Deep Freeze' that works by "freezing" the state of an operating system and working off delta disks. Rebooting deletes the deltas and reverts back to ...
1
vote
2answers
562 views

Where can I find some “real time” discussion forums for security issues? [closed]

The place where I work was hit by the new Qakbot variant (3rd generation) a couple of days ago and it has been brutal. Unfortunately a lot of the documentation out there is from the 1st iteration of ...
2
votes
3answers
2k views

Malware not showing up in virus scan

I have some malware on my computer at work that I'm having a hard time getting rid of. I'm only interning there over the summer, so I'm guessing that it was downloaded by the previous user because I ...
2
votes
1answer
2k views

Windows PE file and Malwares

Trying to understand how and why any virus, malware, worm and code injections are successful after all in a Windows Portable Executable format. I was going through the PE structure documentation, ...
20
votes
2answers
5k views

How does a crypter for bypassing antivirus detection work?

I am talking about crypters used to encrypt files like viruses and keyloggers for the sole purpose of bypassing antivirus detection. How do they work?
2
votes
2answers
226 views

If a user visited a malicious website a year ago, should we nuke from orbit to be safe?

A Microsoft Security Essentials virus scan just finished on one of our computers and it shows two potential threats in Internet Explorer's temporary internet files: Web page with Black Hole Exploit ...
16
votes
6answers
8k views

Finding a specific malware sample for malware analysis purposes

I wish to analyze the changes made by a specific virus. For example, Win32.Sality. Where can I get the sample of this, or other similar, malware for testing?
-3
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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?
1
vote
1answer
502 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 ...
10
votes
2answers
22k views

Advice on what to do after being hacked? [duplicate]

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
250 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
votes
1answer
230 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
707 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 ...
2
votes
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
votes
1answer
3k 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
745 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
4k 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
222 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 ...
8
votes
4answers
14k 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
486 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
931 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
1k 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
167 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
2k 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
1k 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 ...
1
vote
1answer
567 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
555 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
790 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 ...
4
votes
2answers
249 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 ...
7
votes
2answers
544 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
810 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
465 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
311 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 ...
5
votes
1answer
658 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 ...
3
votes
3answers
585 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 ...
4
votes
2answers
3k 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
1k 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 ...
1
vote
1answer
162 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 ...