![]() Note that README.txt is in the list which you will have to decide if you want to alert on. Once files are encrypted, hackers threaten to delete the CryptoLocker decryption key that unlocks files unless they receive payment in a matter of days in the form of Bitcoins, CashU, Ukash, Paysafecard, MoneyPak, or pre-paid. ![]() Detecting behavior is better, which we mentioned in a previous blog post is what some of our customers are doing. CryptoLocker encrypts Windows operating system files with specific file extensions, making them inaccessible to users. ![]() Using lists like this can help catch existing Cryptolocker variants, but hackers are always adapting. There is a thread on Reddit that lists many known Cryptolocker file extensions (both the extension that the newly-encrypted file gets, and the ransom note file).Ī number of customers have asked to be able to more easily paste this list of file names into the list of file types to watch, which is now possible (currently in the 6.3 Preview build). ![]()
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