Scranos Revisited – Rethinking persistence to keep established network alive

In April, Bitdefender broke the news of an emerging botnet dubbed Scranos. Originating from China, it has spread across Europe and the United States, snaring Windows and Android devices with advertising fraud and social network manipulation.

We kept an eye on the developments in the weeks after the publication and documented how the operators tried to rebuild the botnet and restore functionality. This led us to identify new components used to generate ad revenue in the background by visiting arbitrary URLs with Google Chrome and to disguise these ads as notifications, generating additional ad revenue at the user’s expense.




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