Neosploit devel/updates retired! However...

It seems that development of this exploit pack has ended. The message basically states that efforts which are put into development are not returning enough income and supported is ending.

However, this does not mean that you will no longer see exploits delivered via this framework. There are many installations of it out there and it's still one of the best exploit packs, although it was expensive. Also, the Neo folks have released instructions/script on how to move the CGI program from one server to another. Previously, this had to be done with the help of Neosploit Support, as the binary was compiled for specific server. If source code is leaked out or released then it's highly likely that more malware will be delivered through it.

Now, that background info behind us, we have seen something interesting which leaves more questions then answers. We have identified a site which utilizes this pack to drop a binary which seems to be associated with the recent fake Antivirus malware.

What is of most interest is the fact that the obfuscated script, mainly the deobfuscation function has some modifications to its code. Several key statements were rearranged in such a way that logic isn't changed.

Why make such a change? Is it a change or some older build which had a short life span and wasn't updated since? We've been keeping an eye on Neosploit's progress for many months now and have never seen this code sequence. We have observed similar minor changes before, during active development, but now since it's supposedly retired the update does stand out. Is it possible that source code was leaked? or did someone just modify the binary in place, and for what purpose, evade detection?

More research is needed to confirm if this change occurs elsewhere, on other domains hosting Neosploit.

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