Security

Recently, We received some malicious files which appeared to be signed by “Adobe Systems Incorporated”. On closer inspection, however, it was seen that the signature was just a ruse used by the malware author to give an air of legitimacy to the files. Virus writers are getting smarter and going that extra mile to digitally sign their files. Using this technique the malware authors could, for example, penetrate an environment where only signed files are allowed but the authenticity of the signature is not checked. ...

Just when we thought SEO using Flash was as interesting as SEO poisoning can get, it seems it’s getting even sneakier… Imagine a PDF file posted by someone evil online. Of course, Google being Google, the file is recognized as a PDF. And when we open it, it really is a PDF. No evil codes inside, just a good old vanilla PDF file. Three hours later… Google still says the file is a PDF. Brod (one of our geeky guys here) is attributing this to Google’s cache. ...

Microsoft has issued an advance notification for Patch Tuesday next week. The company said it expects to issue two patches, one for Windows and one for Office. Both are intended to patch vulnerabilities that could allow remote code execution and both are rated “important.” Microsoft Security Bulletin Advance Notification for March 2010 here.

This morning while I was enjoying my coffee I received an event notification for my personal Facebook account. It was for a group called “See Who’s Spying On Your Profile – GET NOTIFIED -”. and “See Everyone Who Views Your Profile”. Immediately, my security hat went on and I started to investigate. At first glace, they are both pyramid schemes. In both, you become a fan, then you have to suggest the page to 50 of your friends to move onto the next stage. From there the tactics diverge slightly. In the first one, you need to take a marketing quiz that asks for all sorts of personal info, and you need to put in your Facebook username and password, so they can “monitor” your profile. AND you have to provide them with your mobile number. Now wait a minute… why would they need my mobile number? ...

As we have commented before when content served up from adservers is compromised, the effects can be far reaching, potentially exposing huge numbers of victims to the malicious code as they innocently browse legitimate sites. The problem is further complicated by the fact that legitimate ad content is often heavily obfuscated, in order to evade ad-blocking technology. During the latter half of this week we have seen a whole batch of compromised adservers injected with malicious JavaScript to silently load malicious content from a remote site. A significant number of popular sites that load ads content from these servers have therefore been affected by this attack. ...

One of the issues malware writers deal with is having their programs load and execute on a victim’s computer. An unwary victim may click on an email attachment and have the malware run once. But in order to continue to be of value to the author, that piece of malware has to arrange for itself to be run after the computer inevitably gets rebooted. There are several well known ways to accomplish this task. The problem here is these methods are well known and security software know where to look. Which brings us to the topic of this blog entry. We recently came across a hacked copy of imm32.dll which is Microsoft’s Input Method Manager library. The authors inserted an extra imported library into the file’s import directory. The extra library name starts with “net” and the imported function name is randomized. ...

The 2010 Winter Olympics were held in Vancouver, Canada, from February 12-28. With more than 82 countries participating and millions across the globe catching day-to-day action, it was sadly quite obvious that we would see spam attacks centered on this event. However, the volume of spam relating to the Winter Olympics is actually very low, which is unlike the Beijing Olympics, when spam campaigns had started way before actual event. In the case of the Winter Olympics, spammers seem to be only now waking up from their slumber. ...

It’s time for your daily dose of “spot the fake program / avoid the fake program”. What is it this time? Well, if you have family members who are into webcams and chatting you might want to point them to this writeup because a new challenger has entered the ring: Yes, “Chat Cam” is a rather smart looking (and entirely fake) program designed to make end users think they’re taking part in a large community of webcam owners. Clearly, the creator had the recently launched Chatroulette in mind when they made this one (if you’re not familiar with it, Chatroulette is a site where you jump from webcam chat to webcam chat over and over again, all within one large community of strangers. In practice, you tend to mash the “Next” button endlessly as one “chat” after another fails to materialise). This is what Chatroulette looks like – you’ll notice the similarity as we move further into the writeup: ...

It’s been over a year since we first started seeing the familiar Windows XP My Computer page where it appears your drives are being scanned and it reports a bunch of non-existent malware on your computer. Yesterday I was investigating the latest hot news item where there was a FAMU (Florida Agricultural and Mechanical University) sex tape released on the internet and sure enough I found many SEO poisoned links claiming to have the video. Imagine my surprise when I saw the following. ...

Symantec has been observing several spam and phishing attacks regarding the recent Valentine’s Day. One such phishing attack was on an e-card website that asked for user credentials in order to send Valentine’s Day greetings to loved ones. The legitimate e-card website has partnerships with several other brands and so accepts credentials from certain other websites as well. Hence, attackers can steal user information from several brands’ sites by phishing on just one e-card website. This particular attack asked for users’ credentials for a popular information services website. The phishing domain was hosted on servers in China and has been reported as “domain tasting.” Domain tasting is a situation in which a domain name is used for a small period of time and is checked to see if it is making enough money. If it doesn’t earn enough, the domain name is deleted and the registrant is refunded the entire registration fee. This is a technique used by attackers to perform phishing activity for small periods of time at low costs. ...