The truth is that most Antivirus will hardly protect you from Cryptowares, you'll need more specialized programs to protect your system against them, on top of good browsing habits/practices. Emsisoft products however are one of the only Antivirus products that actually offers protection against Cryptoware, so investing in Emsisoft Anti-Malware would be a really good idea for you and I strongly recommend it. Emsisoft asides, there's two other products that could help you protect your system against Cryptowares.
The first program would be CryptoPrevent
, by Foolibleep. CryptoPrevent was created after Lawrence Abrams (Grinler, the creator and owner of BleepingComputer) idea of using local GPOs (Group Policy Objects) and Registry edits to protect a system against Cryptoware by preventing them to be executed in the first place. This program applies all these rules automatically and remove them in a matter of a few clicks. Note that newer variants of Cryptoware can only be stopped via the Maximum Protection + Program Filtering (BETA)
setting that is in BETA so you could get a few issues by using it. However, disabling that option or setting it a level lower should solve these eventual issues if you were to encounter them.
The other program is HitmanPro.Alert
. HMP.A offers protection based on behavior blocking, mostly via file and process monitoring. If HMP.A detects an active Cryptoware stub, it'll stop the encrypting process. However, this doesn't kill the process nor remove the malicious file since it injects a process in a legitimate one so you'll have to remove it by yourself (or with the assistance of helpers at BleepingComputer).
In conclusion, Emsisoft Anti-Malware, Cryptoprevent and HitmanPro.Alert all offers viable solutions to protect your system against Cryptoware. And since most of them are delivered via Exploit Kits (EK) in the web browsers, using Malwarebytes Anti-Exploit to protect your web browsers and blocking scripts via NoScript (Mozilla Firefox), ScriptSafe (Google Chrome) or NoScript (Symantec) would also be a really good idea.
If you have any questions, let me know