crisis

Let’s continue our cute story about OS.X/Crisis, this time with the startup flow of the main backdoor module. Please apologize for the delay on this chapter – I had some fun with the rootkit and that diverted me to other things. The first curious detail about the backdoor module (installed as /Users/USERNAME/Library/Preferences/jlc3V7we.app/IZsROY7X.-MP) is that no obfuscation/anti-debugging tricks are used (except one) so its analysis is easier than the dropper. It also uses Objective-C heavily, which is still a bit annoying in IDA but has the advantage of the code being very descriptive....

Mac malware is back to news spotlight, this time with Crisis (insert one of the other thousand names here _____). This malware is nothing more than commercial spy software being sold by a lot of money to governments or something (oh boy, I could make a good living out of this). I’m lucky enough to have a sample of it (thank you, you know who you are!) and also lucky to be able to talk about it (it uses some similar tricks that I knew about)....