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The title of this blog reminds me of the old zombie horror movies back from the 80-ies, but what im going to write here is more like a comedy. Some of you guys have probably read my blog post about the time when i tricked them into accessing websites under my control, which led to me collecting alot of information about the callers.
After that blog post i didn’t receive any calls... until today. I was sitting in my home office, drinking my daily smoothie and writing on my paper for the Virus Bulletin magazine, and suddenly i hear the phone ringing. I don’t care about that anymore, because i hear that my wife answers the phone, but after a few minutes she enters my room and tells me that "they" are calling again.
As always, i booted up my VMware image with a totally FRESH installation of Windows XP and start talking to the scammers. For you who are not familiar with the scam, please read my other blog post which can be found below because i won’t cover it in this post. http://www.securelist.com/en/blog/208193750/Trying_to_unmask_the_fake_Microsoft_support_scammers
This time the scammers where using some different methods trying to convince me that my compute where infected with some malware. They even gave me the name "Frozen Trojan", and went to Google and tried to look it up for me. But they only ended up on results talking about the bird flue and other biological viruses which i thought was quite entertaining.
I got the impression that lately the amount of phishing attacks via social media was not as great as we have seen in the past. But just as I logged in to Twitter today I noticed that I had received two direct messages, and they both had a very similar message.
Two days ago I received the first message, and when I tried to verify if it was a link spreading malware, or a phishing site, the URL was already inactive. Now when I received another one I wanted to look at it quickly, and at the time of writing the phishing site is still active.
Virus Bulletin 2012 is now over, the final chapter from this year’s conference needs to be written. Almost all of the participants have packed their bags and gone home. This event was three action packed days containing everything from discussions about cyber war, interesting meetings with fellow researchers and presentations about Indian Phone Scammers. I am now sitting here and writing the last blog post about the Virus Bulletin 2012 conference in Dallas.
This is my second Virus Bulletin, and just like last time it gave me not just the opportunity to network with fellow researchers, but this time I also presented my own research. Vicente Diaz wrote about the second day at VB, and he included some pictures from my presentation on Malware against Linux and the Attackers Automated Tools - check out the pictures here. During my presentation I also had a 30 minute live demo where four people from the audience helped me identify vulnerabilities and exploit them using the same techniques as the bad guys used. The demonstration also contained automated scripts for backdooring and bypassing security mechanisms within the Linux operating system.
Yesterday it was a dark day for many companies in Europe, but especially in the Netherlands. A piece of malware known as Worm.Win32.Dorifel infected over 3000 machines globally, and 90% of infected users were both from public and business sector organizations based in the Netherlands. We have seen government departments and hospitals being victims. The other countries with a large amount of infections were detected in Denmark, the Philippines, Germany, the United States and Spain. All users running Kaspersky Lab’s Products are protected from this threat.
The malware is initially distributed via email to victims. It uses a “Right To Left” vulnerability to hide its original file extension. The malware then downloads another malware which encrypts documents and executes them on the infected computer. Dorifel also attempts to encrypt files found on network shares.
When I was sitting down and investigating the Dorifel malware I noticed that the servers hosting the Dorifel malware was not configured properly and allowed for example directory listing in certain directories. This triggered me to search for more interesting directories, which I did and to my surprise I noticed that the server was hosting a lot more malicious “components” and not just the Dorifel malware. It is very difficult to say if this scam is complex and advanced since it uses many different components with different complexity level. Some of the interesting things I found includes:
At the time of writing there is a new Facebook phishing attack going on. It will not just try to steal your Facebook credentials; it will also try to steal credit card information and other important information such as security questions.
This Facebook phishing attack is pretty interesting because it does not just try to trick the victim into visiting a phishing website. It will reuse the stolen information and login to the compromised account and change both profile picture and name. The profile picture will be changed to the Facebook logo and the name will be translated to “Facebook Security” but containing special ascii characters replacing letters such as “a” “k” “S” and “t”.
Once an account is compromised it will also send out a message to all contacts of the compromised account. The message looks like this:
When logging into Facebook this morning I saw that many of my friends posted a link to a video on their wall, and also everyone liked the link. The video was of a girl with a nice butt and it had the title "Laura Frisian: the most beautiful ass in the world!", it was pretty obvious that it was a scam because it looked like all the other Facebook scams we have seen, but because soo many of my friends were posting this video I still decided to take a look at it.
But after some more research I noticed that it was not just Sweden that was affected, it seemed to be a global epidemic. I also noticed that we were talking about two different redirectors; Trojan.JS.Redirector.ro and Trojan.JS.Pakes.cp.
Web based threats such as malicious links on social medias, infected websites and malicious ads are terms that we read about quite often. We security experts have for quite some time tried to emphasize the importance of protecting both your website and computer from being infected, since these malicious websites often exploit client vulnerabilities. These vulnerabilities have been one of the major attack vectors for malware writers in recent years, but is it still a problem?
We are constantly seeing new software vulnerabilities , and the bad guys are very quick to developg exploits which are then hosted in their exploit kits. The vulnerabilities themselves are not dangerous unless the attacker is able to exploit them on the victim’s computer. The attackers have therefor developed ways to get victims to visit a website, for example, which then triggers the exploit. Some common ways are through social engineering or infecting a legitimate website with redirection code that points to the exploit kit.
Last month almost all major vendors released critical security updates for their software, such as Adobe, Oracle, Apple, Microsoft and Mozilla. I then started to research the current threat landscape, and focused on Sweden since I am the security researcher for the Nordic region; and after just a few minutes I saw that both Swedish websites and Swedish users were under attack.
It seems I’m not doing anything other than write about malware on Facebook, but here goes again. As you have probably read or seen yourself on Facebook, there are quite a few applications pretending to show you a list of people who have viewed your profile. I think the most common one is the “Stalker Application”.
Today I saw something that I haven’t seen before – the applications have changed tactics and have now been localized, meaning the page and message which is distributed is in different languages. In my case the language is Swedish, since I’m from Sweden, and I presume that the worms are also localized in other languages.
Today while conducting research on the alleged Latvian power hack, I came across some interesting malvertising on imageshack, where pictures of the purported hack have been hosted.
Advertising on the page loads a exploitable Java vulnerability that Kaspersky recognizes as Exploit.HTML.CVE.2010-4452.m, which then tries to download Trojan.win32.TDSS.cgir. TDSS as some of you may recognize is a rootkit that can access Windows at its lowest levels and can prove extremely difficult to remove.
Upon opening the page, the advertisement loads, and a connection to http://--removed--ediagroup.com/enc/jv.html is made. This launches the actual exploit. A second page http://--removed--ediagroup.com/load.php?2 is loaded which drops the Trojan containing the TDSS malware.
Kaspersky already detects both the exploit, as well as the Trojan payload. This serves as a reminder of the importance of keeping your Anti-virus up to date.
We will update with further details as they become available.