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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3
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1answer
263 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
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1answer
108 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
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1answer
90 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
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3answers
160 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 ...
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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
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1answer
41 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 ...
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0answers
72 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 (inter-...
2
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3answers
646 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
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3answers
126 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 ...
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3answers
5k 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 ...
1
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1answer
222 views

How to protect against the new malware Mazar Bot?

Mazar Bot is new Android malware that spreads via SMS. Its capabilities: It can read incoming SMS and send itself, make calls to directory contacts, contaminate Chrome, access to the Network, read the ...
0
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1answer
72 views

Why would a hacker/thief just use my credit card for Apple in-app purchase? [closed]

I talked with Apple and finally I found out it was my credit card information got stolen instead of my Apple account. I looked at all my transactions and hacker/thief only made few Apple in-app ...
81
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4answers
7k views

What is the risk of copy and pasting Linux commands from a website? How can some commands be invisible? [duplicate]

Like all beginners in the land of Linux, I usually look for websites that contain some useful shell commands, mark it with my mouse, copy it (CTRL + C) and paste it into a terminal. For example, if ...
-3
votes
1answer
76 views

How many viruses has the average computer? [closed]

Malware hides, so you cannot expect your computer to be malware-free, even when you have antivirus. My computer works fine, but I am fairly sure that I might have something lurking in there. Rootkits ...
2
votes
2answers
113 views

How to prevent IoT devices from phoning home via the neighbor's wifi?

I'm wondering what, if anything, can be done to thwart the sort of attack described below. First, you can assume the following: (1) There are several devices in your home which you have deliberately ...
1
vote
1answer
92 views

Benefits of injecting antivirus inside browser

Some antiviruses propose you to use their browser plug-ins. For instance, Avast SafeZone propose you reactive defend by checking signatures of keylogers/malware/spyware etc. But, what's the benefit ...
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2answers
200 views

SafeZone: keyloggers/malware/spyware protection

As part of Avast free updates you have a chance to use SafeZone browser. Among features of SafeZone browser I found that SafeZone protects you from keyloggers/malware/spyware. I'm interesting ...
10
votes
1answer
1k views

unauthorized logging into my computer

I ve been suspecting someone logging into my computer because a couple of times, during the user log on screen I saw "Signed in remotely from.." The first timeIi saw some of my pictures copied on ...
0
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1answer
92 views

Objectively, how effective are malware removal tools at detecting infections?

I'm fully aware that concrete scientific data may not exist on this topic but I feel that the question at hand won't all boil down to opinion. Either way, with the rampant increase in sophistication ...
42
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5answers
11k views

Is it dangerous to call spam phone numbers, even if you know they're spammers?

I sometimes like to check spam just to see how the messages look like, and I found someone who actually put an American phone number (1-XXX-XXX-XXXX). Most of these spammers are either trying to get ...
4
votes
4answers
121 views

What makes Malware so difficult to remove?

Why is it that when malware or adware is installed it's extremely difficult to remove? You can't go into your programs list to uninstall it and usually need a special program to remove it. What do the ...
1
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4answers
152 views

Do technical advice sites sometimes link to malware, and if so, how should we properly research errors? [closed]

Suppose you get an error on your PC that shows up randomly, then you do a search on the internet for the error to find out how to fix it. Typically, you will get some sites that offer a solution, but ...
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1answer
43 views

Router Malware Infection [closed]

I am aware that routers can be infected by malware and I have two questions. Can a router be infected with malware through the USB port. Are routers only susceptible to DNS malware such that you ...
1
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1answer
56 views

Ad-Banner Rendering Sites Serve with malicious content - how to respond?

We've received a random email, which was of-course by the way it looks might be a marketing attempt - however, one always needs for a verification to be done. The email read the following: We ...
5
votes
2answers
175 views

Security of Windows Processes using “RunAs A Different User”

I've struggled to find much information on this topic. What I'm interested in is the following: Scenario A user is logged into a Windows (7, 8.1, etc) workstation as a standard non-administrative ...
5
votes
1answer
142 views

Does prefetching/preloading in web browsers pose a security risk?

Today I googled the name of a domain that was reportedly serving up malware. My search results came up (with the compromised domain at the top of the list) and within seconds my AV gave an alert ...
6
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1answer
87 views

Are Push 2FA methods safe from Android and iOS Malware?

I am doing a survey on various 2FA solutions, and recently I came across “Push” 2FA (e.g Duo Security). In this solution, the site (e.g. a banking site) pushes a notification to the user’s mobile ...
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2answers
90 views

How dangerous are worm:win32/Goldrv!rfn and worm:win32/vbjk?

Windows defender has detected the following worms on my system and I was wondering how dangerous are they and what is it that they do?
2
votes
1answer
266 views

How does Zeus (and other malware) inject code into other processes

Recently, I've been studying how malware works, most recently the infamously known Zeus bot, and I've noticed one thing that I don't seem to understand: The malware is said to be able to hook APIs in ...
3
votes
2answers
143 views

What to do after a BadUSB attack? [closed]

I'm asking myself what to do after a user gets attacked by BadUSB? (Full scan, boot-time scan, ...?) Is the "bad usb" stick even able to infect the user's system with malware or other spy tools?
0
votes
1answer
99 views

Virus: Images get replaced on website [closed]

I have installed Windows 7 again on my laptop with Chrome as browser. The problem is that on different websites I visit, the actual images of the website get replaced with out of context images. It ...
3
votes
2answers
492 views

How does “Ransomware” Work?

So I am wondering how Ransomware files work. I know Ransomware encrypts all files with AES-256 for speed but where does RSA come in? Apparently RSA is slow to encrypt files so it uses AES-256 first ...
1
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1answer
77 views

How to protect Windows Registery from being changed or from programs trying to add keys

This question is with regards to Windows Personal PC. How to protect Windows Registry from being changed or from programs trying to add keys? I understand that the following general good practices ...
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2answers
157 views

Our users get a trojan horse alert on our site, but we don't. What do we do?

A user of our website got a trojan horse alert when she tried to get to our website. But myself and some other friends got no alert whatsoever and can go on the website and download files without ...
1
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0answers
32 views

iLivid infection/ iLivid behaviour analysis

Although lots of surveys and reports have been done on iLivid by lots of malware analyzers, I decided to inspect iLivid independent of previous research. I have read lots of reports about iLivid but ...
3
votes
4answers
217 views

Can my computer get infected if I hover the mouse to check the thumbnail of an e-mail attachment?

So, today an user sent me an e-mail about a suspicious e-mail. When I opened it to check it, I accidentaly hovered the mouse over the "doc.jpg" and it opened the image thumbnail. I never bothered to ...
0
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0answers
25 views

What's the Safest Way to Open / View Email Attachments? [duplicate]

I'm aware that opening email attachments is a great way to let malware onto my computer. Friends and relatives often send me videos as attachments, so I'm wondering if there's a way to download and ...
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0answers
174 views

How Skype Click to Call plugin is used to send spam?

My friend had Skype Click to Call plugin installed within browser on Mac OSX. And his Skype account started to send some automatic spam messages linking to lose weight websites (via goo.gl) without ...
0
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2answers
64 views

How to reinstall Win7 from a D-drive on an infected laptop

The laptop is infected with some sort of bad stuff (virus? Trojan? malware? etc). I am thinking of wiping it clean and reinstal Win7 "from scratch". I am running Win7 from an HP Probook, which has a ...
0
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2answers
120 views

Bad USB malware and Chrome OS

I have recently been reading about the unpatchable BadUSB and similar malware. I use Chrome OS, which is supposed to be very secure, but could someone with physical access to my system compromise it ...
2
votes
1answer
113 views

Detecting Malcode in Excel and Word Documents

There are a bunch of tricks to circumvent potentially malicious macros in office documents you receive. My question is how do I [forensically] detect if there are malicious macros in the documents? ...
4
votes
2answers
345 views

Google Chrome on Android constantly being redirected

I have an Android (5.0.1 with December 2015 patches). My problem is with Chrome (latest version as per Google Play Store). Which has malicious redirect going on to ...
27
votes
2answers
3k views

Identifying the author(s) of a piece of malware

When a new piece of malware appears, people can try to determine where it comes from, and who its authors could be. How do security experts attempt to identify the authors of a new publicly disclosed ...
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0answers
36 views

Access android internal storage for full passive deep malware scan?

Is it possible to passively (with a computer) view/scan all content on an android mobile device's internal storage without crackopen/damaging it? For a deep malware scan of the whole storage of the ...
0
votes
2answers
327 views

Difference between antivirus and sandbox?

When reading about how antivirus and sandbox work, my understanding is that an AV scans a file to see whether it matches with known viruses signatures. Sandbox can be used to obtain the behaviors of a ...
0
votes
0answers
17 views

Resource of malware source code written in C/C++ [duplicate]

I've started to study malware analysis and have dissected a few binaries. However, I'd like to view the source code of some malware (C/C++) in order to get better insight. I am mainly interested in ...
4
votes
1answer
84 views

Reducing risk for malware exposure from USB storage devices

I have a somewhat hypothetical situation where I need to re-image a machine using a USB thumb drive, however I cannot be certain that the drive itself is malware free. It is the only thumb drive that ...
0
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1answer
112 views

When NtUnmapViewOfSection is called?

I'm analyzing an executable and I see that it created a process child and within it there was a call to NtUnmapViewOfSection. I know that this method is almost always malicious and can be used for ...
1
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1answer
43 views

What is the purpose of enclosing process spawning?

This file/script is supposed to scan for outdated Node modules and prompt the developer to update them, however I believe it is malware. The instructions were to download the file, set the executable ...
1
vote
1answer
159 views

How can I send a file with DLL to Cuckoo Sandbox?

I want to submit an executable for analysis in Cuckoo Sandbox. The file must be in the same folder with a DLL I have. How can I request Cuckoo to test my exe and make it run properly? (i.e exe and ...