Attackers are always finding unique ways to avoid detection. Our teams regularly find malware on compromised websites which have been obfuscated to make it more difficult for webmasters to detect or understand. Obfuscation can take many forms, such as encrypting code or using complex algorithms to hide the true nature of the malicious contents. For example, many malware samples we detect are encoded into base64 to confuse website owners and evade detection.
But during a recent investigation, I stumbled across a rather interesting piece of malware using a more complex form of obfuscation.
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