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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Malware that uses http as a covert channel

I'm working on a http traffic analyzer and I need a collection of malware, which uses http as a way to get commands and respond, to analyze their network behaviour. Is there any database of malware, ...
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593 views

Can one get infected through visiting a site with a PHP script on it and if yes, how?

I can imagine a clientside JavaScript that gets executed in a vulnerable browser to do some harm, but how can this be done with PHP? Since it's serverside it shouldn't have access to the visitor's ...
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Duqu and other reference material for security people

I would like to read more on Duqu and similar exploits when they appear. The problem is that most references from google are for laymen. Isn't there a reference website or... that reports on these ...
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943 views

Site constantly getting infected

I am the webmaster of some websites running Typo3, 2 of which are getting infected constantly. These 2 sites are being owned by the same client. Something happens on those 2 sites that causes ...
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3k views

Strange android app … possibly a mass malware?

I started receiving on my android Samsung Galaxy note strange notifications in Mandarin (the language of the people of china). Once I click on the notification it opens my browser with a blank page ...
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4k views

Need advice on linux server being hacked

I'm currently trying to find out how one of our centos servers was compromised. We were experiencing malware on our sites. After searching I finally found the malware injecting into the sites. As it ...
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812 views

Malicious script analysis

Could somebody tell me what can this malicious code do? I see that in the beginning it turns off the error reporting and logging. Then something with get post method and files stuff. But I am not ...
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82 views

What is a “roving” backdoor?

What is a "roving" backdoor? I understand the general concept of a backdoor. Emphasis on keyword qualifier: "roving"...
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2k views

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: ...
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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 ...
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135 views

Recovering from malware in the registry

I'm a trainee who writes malware samples to later be tested. A basic piece I wrote in C++ kills explorer.exe, taskmgr.exe and repeats this every second. I used a bit of code to add my application ...
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211 views

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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191 views

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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493 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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150 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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238 views

Besides MBR & BIOS, is it possible for a rootkit to stay persistant after a format of the harddrive?

If a system becomes infected and does not have any other storage units besides the one hard drive. Is it there any other way for a rootkit to stay on the system besides infecting the BIOS OR the MBR ...
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342 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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192 views

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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279 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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381 views

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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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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1k views

How do browser injections work?

I've heard many times that malware like Zeus, SpyEye and Citadel are able to do browser injections to steal credit card data. How do they do it? how do browser "injections" work? How are they able to ...
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Windows: unknown program/service etc. sends HTTP request to download a file; how can I find the origin of that request?

The firewall of my company has detected and blocked a repetitive (every 15 min) HTTP request from a PC, which tries to start a download of a file called ..._chrome_installer.exe(or so) from the host: ...
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Why run ondemand scanners in failsafe mode when the virus could have encrypted itself?

The internet is full of guides of how to remove malware on already infected computers. Normally, step 1 is to enter failsafe mode, so that the virus can't interfere with the anti-virus program that ...
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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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188 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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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 ...
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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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259 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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146 views

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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349 views

How to get rid of an Ad bot?

The issue started due to setting up a proxy server on a PC connected to my network. I then realized that all of my devices that connected to the network, including PCs and phones, are all infected by ...
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701 views

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 ...
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563 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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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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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 ...
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What happened with badBios [duplicate]

Maybe some of you remember that in November 2013 the respected researcher Dragos Ruiu claimed that he was infected by some super advanced virus that no one ever heard of before. Experts agreed that ...
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How Do I Troubleshoot a Browser Hijack on a Mac?

My Mac is getting weird redirects with Safari and Chrome, however not with Mozilla Firefox. Since I cannot find software to do malware removal on Apple products or any good information, I am at a loss ...
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How does malware hooks ASEPs?

What are the operations made by malware to hook the auto start extensibility points in order to be able to run at the startup of the computer that runs Windows operation system ?
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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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162 views

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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102 views

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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520 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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The Economics and White Hat Nature of NSS ExploitHub

This question is about the economic model employed by NSS with their ExpoitHub exploit marketplace (site link) and whether it jives with the white hat claims of the company. The company has made news ...
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135 views

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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675 views

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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935 views

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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4answers
930 views

does switching to linux remove existing computer virus

if you change from a malware/spyware infected windows setup to a linux setup will infections migrate to linux if they were on the computer? (when you are hacked/infected is it the op system that is ...
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Where a sysadmin deletes a company's data, why can't they just restore from backups

As an example, in the UBS Duronio case, Mr. Duronio executed code that deleted everything in its path, but isn't there a backup server? Why was UBS hit by the loss of data? If the backup is available, ...
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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 ...
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Can malware provide hidden remote access to a user's desktop?

Is there a possibility that malware on a computer could be providing remote access to an external party without the computer user being aware? I.e., some kind of hidden active remote access tool? ...