From helpnetsecurity.com
Evasion techniques are used by cybercriminals to evade detection, and they are especially prevalent in the context of scripts, which on their own have legitimate uses (e.g., to automate processes on a computer system). Unfortunately, scripts can also be used for malicious purposes, and malicious scripts are unlikely to be detected or blocked by the average antimalware solution. That’s why cybercriminals are turning to script-based attacks and other evasive malware – like Emotet – more often than ever before.