The FatRat is a simple tool to produce backdoor with msfvenom, that is a section from Metasploit framework as clarified previously. This device aggregates a malware with well-known payloads and after that, the aggregated malware can be executed on Windows, Android or Mac. The malware that is made with this tool uncovered likewise the capacity to bypass most AV programming insurances. TheFatRat gives a completely imperceptible payload (exe and C# and PowerShell) that is perceived just by Kaspersky antivirus.”]
Source: https://gbhackers.com/malicious-payload-evasion-techniques/