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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6
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3answers
252 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 ...
0
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2answers
85 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? ...
5
votes
1answer
208 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 ...
2
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3answers
65 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 ...
3
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0answers
92 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 ...
0
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0answers
7 views

Weird looking registry entry (virus)? [migrated]

I wanted to set photoshop as my default image viewer (need a workaround cause windows doesnt recognize it) so I have to edit my registry. In the tutorial on the official adobe website they are saying ...
-3
votes
1answer
127 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 ...
35
votes
8answers
26k views

Is making a clean install enough to remove potential malware?

Is formatting the disk and reinstalling the system from scratch (to Ubuntu) enough to remove any potential hidden software spyware, keyloggers etc.? Or can something still persist installed in the ...
7
votes
4answers
994 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.?
20
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4answers
3k 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 ...
1
vote
1answer
54 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 ...
5
votes
3answers
429 views

Is this powershell script an infection?

While I was sitting in front of the computer not using it,my Windows 10 machine quickly flashed a few terminal windows, and then gave me a Windows Security popup, asking for my password. I have no ...
106
votes
9answers
73k views

How secure are virtual machines really? False sense of security?

I was reading this CompTIA Security+ SYO-201 book, and the author David Prowse claims that: Whichever VM you select, the VM cannot cross the software boundaries set in place. For example, a ...
4
votes
2answers
763 views

Is there any known encrypting ransomware that attacks Macs?

Just about every article I read about Cryptowall, Cryptolocker, and its ilk seems to assume that the reader is running some flavor of Windows. When I Google "ransomware OSX", I get a long list of ...
7
votes
1answer
867 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 ...
0
votes
0answers
38 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 ...
0
votes
2answers
45 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 ...
-2
votes
4answers
70 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?
0
votes
2answers
54 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 ...
4
votes
2answers
836 views

Malware (adware?) infection on linux

Recently I've get stuck with a malware(adware/virus ?) which I can't remove. here is the condition: I'm using Linux (Archlinux), it's uptodate and I don't install any packages outside standard repos ...
24
votes
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
votes
8answers
7k views

How to safely view a malicious PDF?

I have a PDF with important information that may contain malware. What would be the best way to view it?
3
votes
4answers
269 views

Remove pdf malware by re-printing to new pdf or text extract?

Consider you have a suspicious pdf file that might contain malware. Would it be sufficient to either: (1) open the pdf file in a virtual environment and let the pdf viewer or pdf-creator program ...
2
votes
0answers
46 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 ...
1
vote
1answer
38 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 ...
4
votes
1answer
62 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 ...
13
votes
3answers
740 views

How can a font be used for privilege escalation?

Recently Kaspersky released an analysis of Duqu 2.0 and apparently the malware used a True Type Font File to exploit a critical vulnerability (CVE-2011-3402) to "jump directly into Kernel". I haven't ...
6
votes
3answers
296 views

Malware: extract private keys from smartcard?

We all appreciate smartcards because they secure private keys so they don't get exposed to the world. But in a production-environment it's often the case that smartcards are staying inserted for a ...
6
votes
1answer
66 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 ...
4
votes
2answers
93 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 ...
2
votes
2answers
398 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 ...
1
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1answer
46 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 ...
0
votes
1answer
147 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 ...
1
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2answers
117 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 ...
0
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3answers
113 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 ...
0
votes
1answer
60 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 ...
3
votes
1answer
124 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 ...
0
votes
2answers
50 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 ...
0
votes
1answer
95 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 ...
3
votes
1answer
78 views

Why browser hijacker changes the homepage to yahoo [closed]

I have seen many browser hijacker like istartsurf, ask.com which changes the victim's search engine to yahoo. Why many(almost all) browser hijacker changes the search engines to yahoo. Is there any ...
3
votes
3answers
151 views

What kind of email attack is this?

I received the following invoice_scan_nHl8GB.js as an email attachment from a spoofed email address/infected PC zipped in a E.zip. Strangely the sender's address is not properly spoofed, probably ...
3
votes
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 ...
12
votes
5answers
2k views

Unknown process on my ubuntu machine communicating over multiple ports with UDP proto

I have a Django web application where the web app and the postgresql database are hosted on two separate Ubuntu-based machines. On my Database machine (and not my web application), if I run sudo ...
0
votes
1answer
38 views

How Do AVs differentiate between normal cryptographic modules and viruses crypters

I have read that some viruses -in order to avoid AVs- use crypters to encrypt their code so that the AV can't detect them. so as a countermeasure, AVs are programmed to look for the crypter -in the ...
1
vote
0answers
68 views

What are the appropriate steps to take after installing a questionable Android app?

Situation: User installed an Android app from the Google Play Store. User's device is rooted, but that app does not have root privileges. XPrivacy reveals that the app is trying to make IPC ...
2
votes
2answers
286 views

Automatic redirection to another website

As soon as I open a webpage, I am redirected to another site. I have an antivirus on my PC, but it has not been able to do anything to stop this. I have reseted my browser settings (Chrome) and ...
2
votes
3answers
212 views

Unauthorized remote control performed today - teamviewer?

I came home a bit ago from an overnight trip and saw my PC screen moving around. I hoped it was just some ad animation but as I sat down I realized someone was opening 30+ tabs in my Chrome to an ...
1
vote
3answers
112 views

Signatures for an antivirus

When anti-virus software compares an MD5 signature for malware, does it execute the malware on my computer in order to generate the appropriate signature to compare against? [ORIGINAL QUESTION] MD5 ...
16
votes
3answers
4k views

Running windows in virtual machine, should I bother with security?

I'm running Windows in a virtual machine on my mac (via Parallels). Should I bother installing antivirus, firewall and using other conventional wisdom practices (like don't open unknown .exe etc)? I ...
0
votes
1answer
105 views

Is installing malicious add-ons via drive-by attacks the only way to add new toolbars to browsers?

Some attacks on web browsers consist in installing new toolbars on the browser of the user (which is just a small aspect of browser-hijacking. My question: is installing (malicious) add-ons (via ...