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If you barely understand how computers work, but you know your business's accounts receivables file is gone, and somebody is saying they will retrieve it if you
by sowbug 9y ago
If you barely understand how computers work, but you know your business's accounts receivables file is gone, and somebody is saying they will retrieve it if you send them some weird internet money, you're probably going to do exactly what they say rather than view this as a great opportunity to scam a scammer.
Plus, the criminals they might be trying to scam are almost certainly the victims' only hope of obtaining the symmetric encryption key (there are exceptions; some of these programs have been shown to be written by people not entirely clear on how crypto works -- single global key, obfuscated key on client machine, etc.). By definition, the only people interested in paying are the people who have no backups of data they need, so they have no options, and taking the risk of pissing off the criminal doesn't really make sense.
Moreover, for all we know, some victims haven't figured out that they're paying the same people who did the encryption in the first place. From their point of view, this is just like buying antivirus software or taking their computer to Geek Squad.
- SolarNet 9y ago> not entirely clear on how crypto works Sometimes they accidentally weaken the algorithm (like by chopping it's key bits in half through a weak RNG). Crypto is hard, even when the scammer probably has a good grasp. Which is useful in this case.
- brownbat 9y agoIt might be design constraints. It's hard to (a) rapidly, (b) silently, and (c) strongly encrypt a critical portion of a business's network. You can probably choose two.
- Scoundreller 9y agoA cursory analysis of the bitcoin addresses for this malware suggests that sending US$300 in BTC can be difficult. I see sends of US$178, US$189, US$332, US$280, US$362, US$220, etc. Possibly the amount is negotiable, or the amount to pay is different across different geographies. (edit: Looks like this exists, based on the Economist's Big Mac Index: https://www.recordedfuture.com/fatboy-ransomware-analysis/ https://www.recordedfuture.com/fatboy-ransomware-analysis/ )