You’ve got to think outside the box and take an approach that is not specimen specific.” KeRanger was signed with a legitimate Apple developer ID certificate that passed it off as a legitimate application. ![]() “I saw that existing approaches aren’t working,” Wardle said “Antivirus has its shortcomings. The user is presented with an alert while RansomWhere? blocks the process and waits for the user to decide whether to allow or terminate the process. ![]() Researcher Patrick Wardle, director of researcher at Synack and a known OS X hacker, today released his own generic OS X ransomware detector called RansomWhere? The utility monitors home directories on OS X machines for untrusted processes that are encrypting files. On the OS X side there are admittedly few ransomware attacks, and even fewer generic detection mechanisms. Easy Sync Solutions’ CryptoMonitor, which was acquired in January by Malwarebytes, for example, detects and blocks numerous samples on the Windows side before they’re able to execute and begin encrypting files. Generic defense mechanisms are few and far between. The problem is that most adequate defenses are sample-specific Kaspersky Lab has built ransomware decryptors for CoinVault and Bitcryptor, and Cisco has a similar tool to unlock some TeslaCrypt infections, just to name two. With each new unrelenting ransomware sample, security researchers understand that no matter how quickly antivirus signatures are updated or how rapidly decryptors are built and shared, current defenses will continue to fall short.
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