Everyone seems to be eager to pin the blame for the Sony hack on North Korea. However, I think it’s unlikely. Here’s why:1. The broken English looks deliberately bad and doesn’t exhibit any of the classic comprehension mistakes you actually expect to see in “Konglish”. i.e it reads to me like an English speaker pretending to be bad at writing English.
2. The fact that the code was written on a PC with Korean locale & language actually makes it less likely to be North Korea. Not least because they don’t speak traditional “Korean” in North Korea, they speak their own dialect and traditional Korean is forbidden. This is one of the key things that has made communication with North Korean refugees difficult. This change in language is also most pronounced when it comes to special words, such as technical terms.
3. It’s clear from the hard-coded paths and passwords in the malware that whoever wrote it had extensive knowledge of Sony’s internal architecture and access to key passwords. While it’s plausible that an attacker could have built up this knowledge over time and then used it to make the malware, Occam’s razor suggests the simpler explanation of an insider. It also fits with the pure revenge tact that this started out as.
4. Whoever did this is in it for revenge. The info and access they had could have easily been used to cash out, yet, instead, they are making every effort to burn Sony down. Just think what they could have done with passwords to all of Sony’s financial accounts? With the competitive intelligence in their business documents? From simple theft, to the sale of intellectual property, or even extortion – the attackers had many ways to become rich. Yet, instead, they chose to dump the data, rendering it useless. Likewise, I find it hard to believe that a “Nation State” which lives by propaganda would be so willing to just throw away such an unprecedented level of access to the beating heart of Hollywood itself.
5. The attackers only latched onto “The Interview” after the media did – the film was never mentioned by GOP right at the start of their campaign. It was only after a few people started speculating in the media that this and the communication from DPRK “might be linked” that suddenly it became linked. I think the attackers both saw this as an opportunity for “lulz” and as a way to misdirect everyone into thinking it was a nation state. After all, if everyone believes it’s a nation state, then the criminal investigation will likely die.
6. Whoever is doing this is VERY net and social media savvy. That, and the sophistication of the operation, do not match with the profile of DPRK up until now.
Grugq did an excellent analysis of this aspect his findings are here – http://0paste.com/6875#md
7. Finally, blaming North Korea is the easy way out for a number of folks, including the security vendors and Sony management who are under the microscope for this. Let’s face it – most of today’s so-called “cutting edge” security defenses are either so specific, or so brittle, that they really don’t offer much meaningful protection against a sophisticated attacker or group of attackers. That doesn’t mean that we should let them off and give up every time someone plays the “APT” or “Sophisticated Attacker” card though. This is a significant area of weakness in the security industry – the truth is we are TERRIBLE at protecting against bespoke, unique attacks, let alone true zero days. There is some promising technology out there, but it’s clear that it just isn’t ready yet.
10. Who do I think is behind this? My money is on a disgruntled (possibly ex) employee of Sony.