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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Is there any way to block LD_PRELOAD and LD_LIBRARY_PATH on Linux?

Preferably with a vanilla Linux kernel i.e. not using SELinux or GrSecurity? Lately there has been a case of in-the-wild UNIX server malware: https://www.virusbtn.com/virusbulletin/archive/2014/07/...
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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 ...
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758 views

How can I recognize and find file(s) dropped by malware?

Suppose I am doing malware analysis. How can I recognize if, during the analysis process, a piece of malware dropped a file in my system, and if so, the path of the file? What are the procedures, ...
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What do I do, I got a virus warning on a webpage

I went to the web address (hxxp://www.asanka.com) (WARNING: BE CAREFUL WHEN VISITING) on Safari, then suddenly I got a warning message [image below] What do I do? I'm freaked out. I have a lot of ...
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How can I find the source of traffic allegedly originating from my IP address?

I have a problem that has been going on for at least 6 weeks. I have Time Warner for my Internet provider and some websites hosted at GoDaddy. From what GoDaddy tells me the reason I can not view ...
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DPAPI and malware

I'm considering using the Windows DPAPI to protect an ECDH key I use to encrypt some data in a local database in a Windows desktop application. I'm new to DPAPI, but its my understanding that DPAPI ...
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What is the state of the Windows Update certificate after Flame?

May 28, The Flame malware is discovered in Iran and by Kaspersky Labs. June 5, Dan Goodin (Ars Technica) points out that Flame had hijacked WindowsUpdate, spreading signed malware through that ...
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319 views

Which security measures does PyPI and similar third-party software repositories take?

PyPI is a third-party software repository for Python packages. Everybody can upload packages to it (see The Python Package Index (PyPI)). How does PyPI prevent people from uploading malware? When I ...
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586 views

How to protect against viruses that takes files as hostages by encrypting them?

Today I was infected by CoinVault, a new malware similar to CryptoLocker I believe. Before today I was unaware of this entire type of malware. Fortunately I was protected by offline backups, but I ...
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German police malware “Staatstrojaner” general question

In the case of the recent find by CCC, how exactly would the malware used by German police for internet wiretapping work? In default mode, it takes screenshots of active windows, it logs data and ...
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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 ...
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605 views

Why did this attack use 0.0.0.0 as IP address and why did it work?

Working through this exercise in network forensics, the attacker used a buffer overflow exploit to send commands to the victim's command prompt. The commands open an FTP session and download some ...
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How to sanitize archive files?

I am looking for a way to make sure that a particular archive file does not contain any sort of malicious code. From time to time new vulnerabilities pop up (e.g. gzip, 7zip) so I though a good idea ...
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425 views

Can viewing an email message in Outlook 2013 install malware on my computer?

I routinely get spam messages which state "Your account for [Insert game here] has been flagged. If you don't click this link/send us this info/go to this website in the next 72 hours, your account ...
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2k views

How do I know if a font is malicious?

There are cases of fonts being used for exploiting vulnerabilities {for ex: ThreatPost, SecureList and F-Secure}. My question is if you ever get hands on such a font, how do you know that it is ...
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Exploited by newbie3viLc063s

My debian server got exploited by some scriptiekiddie who used Newbie3viLc063 http://pastebin.com/jma8JRG1 . Scriptkiddie uploaded logo_php.png to my server (My permissions sucked :s) and he did run ...
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563 views

Is Window's system restoration useful for getting rid of malware?

If your computer has been infected with some kind of malware, could a restoration of the system, using the tool provided by windows, help you getting rid of that malware? We should suppose that it ...
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Is this VM-sandbox idea a good idea for testing viruses? [duplicate]

You want to look at some viruses, so you use something like VirtualBox to create a sandbox environment. But what if we change that environment a lot? What if we do: STEP ONE: Create a bootable flash ...
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Are malicious drive-by-downloads detectable based on file type/mime type?

Drive-by-downloads are automatic downloads without user interaction. We provide a free service for uploading large files and notifying users by email (this one, something like ge.tt or WeTransfer). ...
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Should I format storage after buying it?

I've just bought a new (unused) external HDD. Should I format it or is it save to use it directly? Did it already happen that a device was infected before the first customer use? Will formatting ...
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833 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 ...
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Can my phone be affected by malware through mobile phone signal?

My phone is newly bought. Can a hacker actually scan the mobile phone signal around me, detect it, and put virus/malware into my phone THROUGH the mobile phone signal of my mobile service provider? ...
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217 views

Securing a Site: Diversity over Simplicity?

This question was derived from my off-topic questioning here: Does Centralisation Decrease the Probability but Increase the Damage of Exploits? Like before, I suspect this may be overly abstract as a ...
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656 views

What is disk encryption worth? Threat of proprietary Bios, SMM, optionrom, TPM etc?

Supposing there is private/secret data on a machine (i.e a x86 arch) the most reasonable thing to me would be to encrypt this data, so to protect it. I understand that the purpose of secured,safe,...
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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 ...
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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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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 ...
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Why Antivirus Detects Simple Java Program as Trojan?

Just now I was testing a very simple code in Java when I noticed a strange thing. On compiling the program my antivirus detected it as trojan and deleted the jar file. Further it is not allowing me ...
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Phishing/Malware redirection through AdExchange on Android

Issue: Yesterday I discovered a strange behaviour in the Chefkoch.de App. During the search for recipe, Firefox opens up with a (German) phishing warning screen. This happened not only on this ...
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Does Gmail's 'preview' feature for documents in the browser prevent malware?

I'm concerned about opening attached Word documents and other files (images, PDFs, etc). Gmail has a feature that previews these in the browser for you in a popup, without leaving the Gmail screen - ...
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860 views

How do cryptographic algorithms help hackers to bypass Antivirus software?

I was wondering how do hackers use cryptography for bypassing antivirus software. I don't have some deep understanding on how antivirus software works, but I know that every antivirus has base of ...
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385 views

Does malware which infects the BIOS/ Firmware always need 'root' access to do so?

There are very few hardened Operating Systems who restrict or totally disable Terminal 'root' access for the user. Would this feature prevent persistent BIOS rootkits from writing into BIOS or ...
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Where to submit collected malware from my honeypot?

wondering if you could help me. i setup the Dionaea honeypot and have collected 6 or 7 malware files. Unfortunately upon checking the Dionaea logs it keeps giving the error "Couldn't resolve host" for ...
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Can a malware jump from a virtual to the physical machine? [duplicate]

Possible Duplicate: How secure are virtual machines really? False sense of security? I found out that malware authors check if the hard drive volume name, or network card MAC matches default ...
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Security Alert - Office File Validation - how to decide whether to proceed?

Recently, when opening a Microsoft Word document that came from a trusted source, I received the following warning message: The warning message is titled "Security Alert - Office File Validation". ...
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644 views

Has anyone else seen commands embedded in an ICMP echo request?

My IPS recently detected a type 8 ICMP packet (echo request) with an unusual payload. The echo request command a fragment of a command that looked like part of a route add. Here's a PCAP of the ICMP ...
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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 ...
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How do I use a directory of YARA files?

I'm going through the Malware Cookbook PEScanner and they want a path to my YARA files to search on. I currently have a directory full of YARA rules for known pieces of malware. What would be the ...
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368 views

Antivirus constantly detecting tmp files as threats

Recently my antivirus has been constantly detecting threats and it's always tmp files. I delete maybe 50 of these files each day. A few days ago it detected a trojan. Last week it detected many '.json'...
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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 ...
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Can source javascript files be infected from a developer's machine?

First a little bit of background, About two weeks back one of the developers in my team said they were seeing advertisement popups and links appearing all over the web app we were developing, when ...
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What security problems does copying .Xauthority to another user present?

If I want to use a GUI application with another user (example: webbrowser), I can copy the .Xauthority file to that given user's home then I can "su - user" and start the GUI app. Question: but what ...
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Is there a way to check for “hollow” processes, or malware hidden within “normal” processes

I recently came across an article on the The Verge, which centers around the concept of commercial malware production and how it's used around the world. The article introduced me to a number of ...
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Would DLL hijacking work with load-time linking?

I was wondering if DLL hijacking would work with all types of linking or just run-time linking. I hear that malware uses it and wanted to know how it works
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How can I recover files encrypted by Android ransomware?

My Samsung Galaxy Note II was infected by a virus called the "FBI virus." Fortunately, I've managed to remove the malware but my problem now is that all my files have been encrypted. How can I ...
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622 views

How dangerous is a virus introduced to a malicious website in chrome?

I am using Google's Chrome browser under Linux (Ubuntu) 64 bit for web browsing. If I a virus uses for example a leak in the flash player, the virus will get the privileges of the user who started ...
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Detect malicious content on enourmous multi-site CMS [closed]

My Goal: My hope is to catch pages and content that would be flagged by Google Safe Browsing or others like it, except more proactive than waiting for a crawl by Google or being added to a ...
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How can NSA implants and backdoors be detected? [closed]

It has been a while now since the Snowden revelations of various NSA malware and backdoors. For instance: March 12, 2014: NSA has developed implants to take over targeted computers’ microphones ...
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How will microvirtualisation change the security field, if at all?

Will this reduce the number of exploitable vulnerabilities in common operating systems? Will the only path in be to exploit the VM itself? Marketing blurb from Bromium's website below. ... ...
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Should I trust URL based on file extension like this: http://example.com/image.jpg

I created a slideshow and mentioned that user must not trust URL based on file extension, however, I got some claims against that, because URL's like this should be safe: example.com/images/pic001....