Malware is any software application which subverts the will of the legitimate owner of a computer, by means of force or subterfuge, with or without personal or monetary gain on the part of the creator.

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217 views

Do common malware compromise recovery partitions?

Just about now a friend of mine got compromised, actually she was compromised by various adware since long ago but she installed something (her browser was hijacked to deliver even more malware) and ...
7
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1answer
923 views

How does this javascript attack work?

There is a closed question on StackOverflow with a similar code excerpt but it is closed due to not being a programming related question so I thought I would ask here instead. It was emailed in a Zip ...
4
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2answers
528 views

Do multiplatform viruses exist? [closed]

Is there any known virus that targets the main operating systems: Windows, Linux and Mac OS X?
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5answers
2k 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 ...
3
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1answer
2k views

Is bit.ly a malware distributor?

I clicked this link http://girlsguidetosurvival.wordpress.com/ Chrome gave me this warning - Attackers currently on bit.ly might attempt to install dangerous programs on your computer that ...
2
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1answer
366 views

what is the difference between dll hijacking and dll injection

I am confused. I would like to know if dll hijacking and dll injection are the same or are they different. I know that some malware use it to do malicious things. thank you in advance
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3answers
143 views

Is it possible for a virus to be downloaded unknowingly and run when a website is opened?

Usually, the only time I see viruses happen is when someone mistakenly runs an infected file. But could one also be infected by just visiting a website?
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2answers
389 views

Identifying suspicious encrypted traffic [duplicate]

Firstly, I welcome a better title for this question. I admit I'm a security novice. I'm trying to determine whether I have malware and what that malware may be doing. Using Wireshark, I see several ...
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1answer
135 views

What does a trojan look like? [duplicate]

I would like to know what a trojan looks like. There was a great example of a worm (although it is old) posted by Wired. Viruses embed themselves into an existing program, by changing the existing ...
139
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8answers
16k views

What should you do if you catch ransomware mid-operation?

You boot up your computer one day and while using it you notice that your drive is unusually busy. You check the System Monitor and notice that an unknown process is using the CPU and both reading and ...
30
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6answers
4k views

How safe are employee laptops in China against International corporate espionage?

I recently took a business trip to China. Our IT department told me I could not take my normal machine, and instead gave me a loaner. This loaner had MS Outlook and was linked to my normal company e-...
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3answers
6k views

How to detect if I am vulnerable to “Superfish,” and how to remove it?

The site has already a discussion of the security risks of "Superfish". It seems to me that anything that tampers with the bits of one's connection is bad. If it tampers with TLS connections, it is ...
24
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5answers
3k views

How can I safely check whether an email link leads to a malicious website?

Over the last few weeks, I've gotten several spam emails from different friends that only contained links to different websites. I would like to click on those links and see what's on the website. ...
12
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4answers
6k views

Detecting reflective DLL injection

In the past few years, malware (and some pen-test tools like Metasploit's meterpreter payload) have begun to use reflective DLL injection (PDF) to load a DLL into the memory of a process. The benefit ...
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6answers
2k views

Why are vulnerabilities and lack of security possible in computers?

I have heard about computer vulnerabilities, virus, malware, etc. Why are these threats possible? Why doesn't the computer just do the things it is supposed to? Why do some people write malware, ...
18
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4answers
40k views

Can a PDF file contain a virus?

Could a PDF file contain any type of malware?
17
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2answers
956 views

Is there a real possibility of getting malware by “drive-by”?

I know malware can be gotten by downloading and running stuff, but is there a real possibility of just viewing a webpage or clicking a link and getting one? Assuming using only Firefox / Chrome and ...
16
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3answers
70k views

Is it possible to make a phone call appear to come from another phone, even to the network provider?

Quick Question Is it possible that I could call a mobile number, but have the call forwarded through another number active on a different phone that someone else has? I have had unlimited access to ...
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6answers
7k views

Can malware be dangerous even when quarantined?

I am reading a book on network security and when talking about user confusion it writes: "It is not uncommon for a user to be asked security questions such as Is it safe to quarantine this ...
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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-...
18
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4answers
14k views

Can home routers get infected?

I am behind a router(linksys that runs dd wrt on it) and I was infected with sality. I'm curious, can my router get infected too? If yes, how can I remove the infection? I used the search bar but ...
27
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4answers
17k views

Is HTML5 vibrate feature a security vulnerability?

While surfing a news website on my mobile, I receive a virus infection alert warning that triggers my phone to vibrate incessantly. The alert looks like the following: I didn't expect my phone to ...
27
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4answers
2k views

Are anti-virus companies companies regularly committing software piracy?

As Mikko Hypponen highlighted in a recent tweet, anti-Virus companies collect and store both samples of malicious software and samples of legitimate software: This got me to thinking, what ...
18
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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 ...
17
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2answers
530 views

Do the most common ransomware programs delete the original files as they go, or in a big bulk delete at the very end?

I'm talking about the most common varieties like Cryptolocker, Cryptowall, Torrentlocker, KeRanger, RSA4096, etc. (There is not necessarily a need to answer for all of these, one or two may do.) If ...
12
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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 ...
11
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5answers
330 views

Security of root terminal (su -) when logged into X

I often log into X as normal user (of course), open terminal and switch to root: su - I have then a terminal owned by user but effectively with root privileges. Are there any security issues in ...
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2answers
529 views

What is the best resource to learn malware analysis? [closed]

I am looking for a resource that helps learn malware analysis. I know about the practical malware analysis book but i am looking for something other than a book. For example a Site or video tutorials.
27
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3answers
3k views

Malware that can survive BIOS re-flashing

The well-respected security consultant Dragos Ruiu is reporting that he has been infected with mysterious malware that can survive re-installation of the OS and re-flashing of the OS. In other words, ...
18
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4answers
735 views

Malware - are removal tools acceptable or is bare metal re-install the only safe option?

I see a number of companies offering "malware removal" services. I see some software that claims to be able to remove malware from an infected machine. Is using a removal software tool to 'clean' an ...
13
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5answers
1k views

Checking if notebook is clean of hardware spyware

Are there any simple steps one can follow to verify if a notebook is clean from hardware spyware? What should be looked for? How should it look? If any visual tutorials with photographs are ...
9
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7answers
18k views

How can I prevent viruses/malware from infecting my flash drive?

I've a pen drive that I carry to the college lab . It seems all the systems in lab is infected. I need to be able to write to the drive, so I can't simply write protect it. Everytime I insert a ...
8
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2answers
875 views

How to avoid ransomware

Malware files execute themselves after downloading them. Let's look at it from the point of view of a piece of ransomware like CryptoLocker, from Wikipedia: Crypyowall 3.0, uses a payload ...
7
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1answer
409 views

Javascript phishing attack sucker: Do I need to be worried? [closed]

So, I'm an idiot. I opened a javascript phishing attack file. I would really, really appreciate some help with decoding the Javascript to figure out whether I'm in trouble, and what sort. I'm on OS X ...
4
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4answers
628 views

Malware via power outlet

This is perhaps a very dumb question, but as I have no knowledge nor experience of IT security I have no option but to ask here. Is it possible to get malware onto your computer or smartphone by ...
3
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2answers
358 views

Is it possible for malware to be in the BIOS or in hardware?

Is it possible for malware to be written in the BIOS section and loaded on every fresh Windows Install? If it is possible, can this affect Linux (Ubuntu and others) operating systems as well?
2
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2answers
234 views

Determining safety of Android APK executable that requires root

On my request, a developer gave me a new version of his Android app to test. The app requires root permissions. I do not know the developer personally. I have no specific reasons to trust or ...
0
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2answers
454 views

What to look for in a PHP file on my server to decide whether it is rogue or not?

I found this file in my folder named quarantine_wp_protect.php. This file sits outside the public_html folder. Inside this file is the following code: GIF89a???????????!??????,???????D?;?<?php $...
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3answers
732 views

What are JS malware attack techniques?

Malicious JavaScript (generated by malicious hosted PHP code for example) can lead to attacks. What are the types of attack that malicious javascript could perform? Are the drive-by download attacks ...
15
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5answers
2k views

Can a .sh file be malware?

Can a .sh file be a virus or something harmful? Is it like .exe files on Windows? If yes, can someone read this script and tell me if it safe and is it effect any how on GnuPG security? It gives me an ...
11
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3answers
2k views

How to deobfuscate this PHP malware?

Two days ago a file called "images.php" appeared on a friend's server, which he noticed because it caused errors. The file contained the following. This code is of unknown origin and presumed to be ...
7
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5answers
5k views

Browser hijacked - how to fix and prevent?

For the second time in a month, my work PC has been infected with malware that is hijacking my Google search results in Firefox. A search for the URL hijacked searches end up at turns up nothing on ...
6
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3answers
1k views

What methodologies are useful when reverse-engineering malware / shellcode?

Whilst I'm familiar with reverse engineering techniques from a technical standpoint, I've never found a good methodology for approaching and dissecting malware / shellcode. I've found hundreds of ...
6
votes
4answers
3k views

Is online banking more secure on iOS than a desktop computer?

Does Apple's iOS provide a more secure environment for online commerce (banking or shopping) than Windows or Mac OS X? Since the only software that can run on iOS must be vetted by Apple, the ...
5
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4answers
1k views

Can malware hide their network activity from Resource Monitor (perfmon)?

Is it possible for malware to hide their network activity from tools like the Resource Monitor that ships with windows? How much effort is it for a malware developer to implement such functionality? ...
3
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3answers
3k views

How to check if URL/ IP belongs to a zeus bot

I have a set of URL's which might be Zeus hosts / C&C servers since my security appliance says so. Is there a way to check if these really belong to Zeus?
10
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2answers
984 views

Effectiveness of flattening a PDF to remove malware

I'm currently looking at ways to prevent malicious PDF files at the network boundary. This will include virus scanning - but there are known limitations to that. I see a common approach is to flatten ...
8
votes
6answers
2k views

Using linux to combat windows flash drive malware?

I just put an old flash drive which i used with a windows machine into my linux. I noticed many files, mostly exes which were never visible in windows (my windows does not hide hidden files and ...
7
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4answers
695 views

What abuses can an infected webpage do to me if I'm using Chrome and Flash is disabled

as a follow-up to this question Can you get virus just by visiting a website in chrome., I've read these pages: http://www.straightsectalk.com/?p=47 http://www.vupen.com/demos/VUPEN_Pwning_Chrome....
6
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1answer
749 views

Can a malware steal the content of the clipboard? [duplicate]

Is there any malware that can steal the content of the clipboard?. E.g. say you have a text file with say private info or passwords, and you copy this data to paste on say another text file on a ...