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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Can a virus execute without user interaction? [duplicate]

I have seen a lot of malware infection techniques where the user is infected by drive by downloads through browser vulnerabilities or social engineering. But is there a way that a virus could execute ...
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5answers
5k views

How do I safely inspect a potentially malicious website?

Sometimes I'm interested in what's behind a malicious website. How do I stay on the safe side if I decide to inspect? I'm searching for methods that are quicker and more simple than running the ...
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1answer
104 views

website - infected by malware and if yes, how can I treat it? [closed]

A friend told me that the website of our association, here , got blocked by the corporate network of the company he is working for, due to malware (see picture below) I've tried a few website like ...
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2answers
88 views

Protect against virus and malware attacks from website ads with iptables

Lots of websites spread malware by publishing advertisements that distribute malware. Even YouTube's ad network has been compromised in the past. Browser ad blockers and related plugins have there own ...
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3answers
258 views

Why don't the majority of today's malware use strong cryptography?

While reading another story of botnet takedown, my wondering has reached its apogee: Why don't malware authors use cryptography (encryption + signing) provided by good libraries when their creations ...
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2answers
749 views

Advertisement on Skype tried to download a file to my computer using Javascript

I usually have Skype running in the background. If you have ever used Skype before, you probably know it has advertisements. One of these advertisements made two windows pop up on my screen, asking to ...
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1answer
105 views

mail.ru and slightsearch.ru hijacking browser default search engine set by admin

I recently got malware installed on my PC that contained software that infected my google chrome, by hijacking my default search engine. I tried: Removing newly installed programs from PC, using ...
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2answers
570 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 ...
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3answers
174 views

Mitigating the risk for a successful ransomware infection

The company I work for has been getting hit with loads and loads of frightfully sophisticated ransomware spam lately, people masking as consultants, customers, very specific company requests, etc. ...
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1answer
31 views

How to safely exchange functionality of a file between two computers?

I have two computers and the goal is to move a functionality of a given file from computer A to computer B. The file is supposed to have a certain known functionality but it potentially could expose ...
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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 ...
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59 views

Do these DNS requests seem like Conficker/Torpig-like behaviour?

I'm at my wit's end on this one... I have been seeing weird traffic from an IP on a client's local network and I think the host is malicious. Looking at the traffic it is producing, is always ...
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2answers
48 views

Random autofill [closed]

I was trying to pay for something just now, and when I put my name in the chrome autofill came up and I clicked it. The address that showed up was wrong though but corresponded to the postcode of one ...
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2answers
2k views

Will completely wiping your hard drive remove all malware? [duplicate]

I recently bought a new computer. Now I want to convert my old PC into a Linux system. However, I want to start completely fresh and not bring over any malware. I am already planning to wipe ...
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1answer
68 views

How can a polymorphic virus decrypt and execute portions of the code during runtime?

I found this article about a polymorphic virus that encrypted and decrypted itself during runtime. The article said that the only non-encrypted part was a stub that decrypted the next part of the ...
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1answer
259 views

Could someone help me deobfuscate this malicious script code [duplicate]

Two months ago one of our Wordpress sites was infested through and through. This was at the same time I started working at this company. Our main platform is Plone, but I guess they did some on the ...
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2answers
73 views

Malware able to “read” one's screen

I was searching online about multifactor authentication. One of the reasons that people recommend it is because they fear someone may use a keylogger to "steal" their password, so they use one more ...
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2answers
120 views

Malware or viruses by browser redirects?

Recently was browsing and clicked on a link to the following address: (In code blocks so you cant accidently click it) http://paycheck-calculator.org/ Clicking on this quickly loaded 2-3 different ...
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2answers
235 views

Android Malware Dataset

I am working on a project to identify the author of the malicious apk. To test my results I need dataset of malicious apks along with their authors. Currently I am working on a dataset which is very ...
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3answers
127 views

Is tails os susceptible to a cold boot attack?

I've looked at the documentation and it mentions that upon shutdown the data residing in the ram is overwritten, however it doesn't go into any detail on how it does this. Documentation link: https://...
3
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0answers
100 views

One-time mystery redirect from one of our pages

I'll make the explanation of the situation as thorough as I can, and the question is at the bottom. Recently, we received a report from one of our users that, immediately after logging out of our ...
2
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1answer
599 views

With Ubuntu on Windows 10, could exploits and malware that work on Ubuntu (or related distros) work on Windows? [closed]

So apparently Hell has finally and completely frozen over: the next major update for Windows 10 will be able to natively run Bash, related tools, and even some broader set of Linux binaries/programs ...
6
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3answers
306 views

Does malware persist after wiping hard drive and reinstalling OS from manufacturer disc? [duplicate]

This question is related to a computer where users other than the owner have had access for periods of several hours at a time. The following steps have been taken to clean the computer: Used ...
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2answers
102 views

Is it possible to hide malicious code within/behind an image? [closed]

Is it possible to hide malicious code either within an image, or behind it as it is displayed on a webpage and then if the user saves this image, they actually are downloading the malicious code? ...
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4answers
4k views

How is malware distributed within zip files?

Recently it seems there has been a big outbreak of zip files being emailed to people with a .js file containing code that downloads and executes cryptoware. How does the .js actually get executed ...
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1answer
66 views

How to distinguish malware from system crash?

Recently, I browsed to a website, which appeared to consume all the computer's resources. Although the mouse cursor continued to move, the browser (and other applications) slowed down fast and soon ...
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4answers
1k views

How to trace the actions performed by a virus?

Is that possible to trace the actions performed by a virus? Run Time , stolen data and the files consulted and get the relative impact on my pc.?
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42 views

Where to get a specific malware by its name?

First of all, I have referred almost all the links provided by the following links Finding a specific malware sample for malware analysis purposes http://reverseengineering.stackexchange.com/...
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1answer
940 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 ...
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2answers
64 views

Is there a server/website specific malware scanner? [closed]

I have multiple Linux CentOS servers that are scanned with the Google Webmaster Tools, and when it finds some malicious code on my servers(shared/dedicated), the ranking of those site drops. What I am ...
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4answers
88 views

Zero-day malware protection [closed]

What is the best approach in defending your company against zero-day malware? Is there a firewall/system to do that? Is it good to run every file in a sandbox and to track activity of the sandbox?
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2answers
56 views

Protection against file distributed malware

Let's say I have one server called A which host an upload website which is connected at the network connection B. Let's say one of my clients uploads multiple .rar files of 1 MB (that contains malware ...
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3answers
97 views

Does any malware target Tails?

Tails is not a popular OS and is optimized for security, which makes me doubt there is a significant amount of malware that targets it. I googled "malware targeting tails," and found no relevant ...
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0answers
77 views

Creating a dynamic malware analysis environment

I don't know much about malware analysis so why this question here. I have analysed Short cut virus statistically and its impact on USB drives and wrote a code to repair its damage. My static ...
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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. ...
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1answer
70 views

Windows command line does not check for revoked certificates: How bad is it?

I recently updated my D-link wifi dongle driver. However, I had to do this through the command line because Microsoft revoked the D-link certificates after a leak. The executable would simply not ...
5
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1answer
237 views

What are the actions of Locky on the source files which lead to encrypting?

During discussions about possible actions to mitigate the risk of the ransomware Locky, someone pointed at the possibility of preventing at OS level the creation of .locky files via the File Server ...
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1answer
69 views

Regarding malware and hardware

Bit of a weird one, hope this is the appropriate venue: I've just purchased some Ethernet-over-power adapters that were returned to and repackaged by a brick and mortar retailer. I'm trying to be ...
6
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1answer
114 views

Do viruses infect recovery partitions? [duplicate]

In the "Good ol' Days", Windows came on a CD, and when one got a virus, one had original, write only medium to clean up one's computer completely. Nowadays, most computers have a "recovery partition"...
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2answers
100 views

Notifying users of a possible security breach

Yesterday, a coworker informed me that a user had opened a malicious e-mail containing a .dotm document which she could not open. I undertook the usual steps to prevent the malware from spreading to ...
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2answers
471 views

Beside GIFAR are there any other known polyglot files? [closed]

A GIFAR file is a polyglot file with a fancy name. It can be "opened" both as a valid GIF file and a valid JAR file thus leading to security issues under certain circumstances. Definition of a GIFAR ...
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3answers
147 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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1answer
155 views

Is that possible for Linux and windows machines to be infected with KeRanger ransomware?

According to theguardian The Transmission site offers the open source software that was infected with the ransomware called KeRanger malware, it's programmed to encrypt files on an infected personal ...
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1answer
47 views

Retrieving malware report information from malware network

I'm getting ready to stand up an isolated malware network at the place I work for performing analysis tasks and it will have a suite of reverse-engineering and analysis tools on it. For obvious ...
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2answers
229 views

Money stolen via Android malware Port 4000 remote anything exploit

As background, my business bank account was compromised. The compromise also involved call forwarding of a smartphone. So they got bank credentials and cell phone credentials. I initially suspected ...
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3answers
115 views

What implications does the KeRanger infection have for Mac OSX security?

Recently some hackers replaced installers for a popular torrent client with an infected version. According to paloaltonetworks, they have no idea how the hackers managed to do this (let's just assume ...
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1answer
69 views

Spoofing domains in Facebook

Over this past week my Facebook's timeline have been flooded by people posting "teenagers sex videos" and tagging a lot of people. It's common in Facebook to see this kind of malware spreading to ...
0
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2answers
53 views

chrome invisible flash document

I have it so flash doesn't start on page load for security and performance. Lately I have been noticing That some pages will load with a flash document that takes up the full screen. I can see it as ...
3
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1answer
259 views

How are viruses attached to files?

How do viruses attach to files? How does it infect applications? I'm talking about down to the binary level, how does code get added to a file to make it infected? Obviously, if we hash check the ...
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1answer
107 views

Recent malware programming language? [closed]

I'm working on pentesting as part of Information Security course. Recently I have been in some Education Oriented Malware... But I have only developed in .NET oriented applications. How is malware ...