### Comment:
What are some common evasion techniques used by malware to avoid detection?

### REPLY:
Malware employs various techniques to evade detection, such as polymorphism, which involves constantly changing its code to create unique variants that can bypass signature-based antivirus detection. Other techniques include rootkit installation to hide malicious processes or files, encrypting communication channels to avoid network monitoring, or using sandbox evasion techniques to detect if it is running in a virtual environment.