Bypassing AV with Veil-Evasion

Veil-Framework is a collection of tools that help with information gathering and post-exploitation. One such tool is Veil-Evasion which is used for creating payloads that can easily bypass Antivirus using known and documented techniques. This is done through an array of encoding schemes that change the signatures of files dramatically enough to avoid standard detection techniques.

more here..............https://www.netspi.com/blog/entryid/234/bypassing-av-with-veil-evasion