I don't think it targets a specific network, the traffic it generates through selfpropagation just overwhelms the network.
I recall yonks ago dealing with a worm or virus where the traffic generated crippled a massive corporate wan. We implemented access control list on the cisco routers filtering the bad traffic over the wan and blocked infected desktops on the lan side. the poor end user support guys had their hands full cleaning up the mess on all the clients.
Why did this happen? The av definitions on the servers were not updated fast enough (and propagated to the clients) due to the QA process taking to long, when I say long it was like 24/48hrs. There was a lot of kuk & people wanted heads on stakes, think after that the QA process was skipped for AV stuff.