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The ftp server is optional and only required if you want to transfer keylog data via ftp. After setting up everything we like, we can just jump to the keylogger configuration: In a real configuration I wouldn’t mess up with the firewall, UAC and AV notification, that would probably be too “noisy” and any user with just a little bit of knowledge about what he’s doing will understand that something is wrong. We want to make the backdoor as widely usable as possible, so we’ll enable just the first three options. Decide whether or not you want to show a message upon backdoor’s startup (I decided not to) and jump to the Module Shield section: Just don’t forget to check the Persistence Installation option.
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You’re allowed to choose among several predefined locations: documents directory, favorites folder, desktop, windows directory, cookie path etc… In this case the path and final filename are not important, we’re not doing forensics and we know exactly what to look for, so for your own convenience you can use something easy to remember. Choose the network IP address where you want the data to be sent by the infected target, the port (885 in our case), and then configure the Module Startup parameters: Generate the names used by the backdoor for the mutex and server id, then, just to make our reverse engineering session more interesting, activate the FWB. So first of all set your password, it will be used to encrypt all the traffic, and this is really important. This is the place where we’ll setup the backdoor we are going to use a plausible configuration. It might also be a nice idea to run all the components inside a Virtual Machine… You know, just in case… Configuring the server moduleĪfter opening the client just click on the main menu and open the Server module section: Clearly we’ll have to split the configuration in two parts: the client and the server, optionally we can also configure the downloader module, that’s the main vector used to grab the custom executable from the web, and apparently it’s the same module that’ been used in Syrian attacks, so it may be worth to take a look at it.
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Did the government really choose DarkComet to fight the opposition? Apparently so, and for us it’s a good opportunity to dissect this program to gain a deeper knowledge, and possibly to be able to detect and remove it.įirst of all we need to download DarkComet from its website: it comes as a package, no installation is required, simply unpack it somewhere and run DarkCometRAT.exe. This might also indicate that the government started monitoring the contesters from the very beginning of the uprising in fact DarkComet v3.3 was released at the end of April 2011, just a month after the demonstrations begun.
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The first was a DarkComet v5 plain executable, the second one was DarkComet v3.3 embedded into a decoy MAC Changer application. Fortunately TrendMicro was able to gather two different samples delivered to the opponents of the regime, they found out that both of them were different versions of the popular DarkComet RAT.
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It wouldn’t be too unrealistic to assume that the malware wasn’t even coded by the government but acquired from the “black market”, or even worse on the internet as a commercial or free tool. Then in one case the malware file wasn’t even embedded with another application, thus reinforcing the hypothesis that the attack, after all, might have been setup in a quick and dirty way. We don’t have a lot of elements for the analysis but we can speculate just a bit: first of all the malware wasn’t delivered through an exploit but as a plain executable file, so apparently we are not dealing with a high-profile attack. Whatever the means, the common sign among all the stories is that this file, after being opened, did simply nothing and even the antivirus didn’t complain at all. In other cases the same file was delivered as a Facebook Chat security update, together with a Facebook icon, while some other people claim that it was also sent by mail. Those passwords were used later on to access his Skype account and infiltrate the network of protestors, spreading via chat a program containing some malicious code.
It is not possible to confirm the story but this is what is being told by the opponents of the regime: apparently one of the protestors was brought to jail and promptly forced to hand over his passwords. Apparently the regime has been using a well-known social engineering technique: impersonate a trusted person then attack from the inside. On February 17 th the CNN published an interesting article, where some Syrian’s regime opponents claimed that the government was using a Trojan to monitor and disrupt the protestor’s network.
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