FIN7 Deploys Anubis Backdoor to Hijack Windows Systems via Compromised SharePoint Sites New advanced FIN7's Anubis backdoor allows to gain full system control on Windows New advanced FIN7's Anubis backdoor allows to gain full system control on WindowsFIN7 cybercrime group has been linked to Anubis, a Python-based backdoor that provides remote access to compromised Windows systems.securityaffairs..