Malware
Ani-Shell
aka anishell
Ani-Shell is a simple PHP shell with some unique features like Mass Mailer, a simple Web-Server Fuzzer, Dosser, Back Connect, Bind Shell, Back Connect, Auto Rooter etc.
Ani-Shell, also known as anishell, is a PHP malware family.
Background
Ani-Shell is a lightweight PHP shell that ships with several distinctive capabilities, among them a Mass Mailer, a basic Web-Server Fuzzer, a Dosser, Back Connect, a Bind Shell, and an Auto Rooter.
Source: Malpedia (Fraunhofer FKIE).