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f-secure.com] We have recently observed a significant increase in infections from a nasty strain of file-encrypting ransomware called CTB-Locker. Daily CTB-Locker infections in relation to the total number of such infections this year. CTB-Locker is most commonly spread through email spam. These emails usually contain an attached .zip file that contains a second .zip file that finally contains an .scr executable file. This executable is a malicious downloader known as Dalexis. If the use…
