Careful planning of the infection process helps achieve better results in shorter time (more compromised hosts). Of course, bot administration requires authentication and authorisation, so that only the owner can use them.Īn important feature of such bots is the fact that they are able to spread rapidly to other computers. Control over these bots is usually based on sending commands to a channel set-up by the attacker, infested with bots. They are daemon processes, which can run a number of automated operations. IRC bots are treated no different than regular users (or operators).

An operator has more priviledges (dependent on modes set by the initial operator) than a regular user.

A user who creates a channel becomes its operator. There are two basic levels of access to IRC channels: users and operators. IRC users can communicate both in public (on so-called channels) or in private (one to one). IRC is an open network protocol based on TCP ( Transmission Control Protocol), sometimes enhanced with SSL ( Secure Sockets Layer).Īn IRC server connects to other IRC servers within the same network. Most IRC servers allow free access for everyone. It is a protocol designed for real time chat communication (reference to RFC 1459, update RFC 2810, 2811, 2812, 2813), based on client-server architecture. This will help hide the bot from basic security systems, and let it easily spread. A good programmer can easily create his own bot, or customize an existing one. In this particular case the user is an attacker and the bot is a trojan horse. It uses IRC networks as a communication channel in order to receive commands from a remote user. This article will describe a special kind of a robot, or bot (as we will call them from now on) - an IRC bot. Programs which respond autonomously to particular external events are robots, too. Spiders used by search engines to map websites and software responding to requests on IRC (such as eggdrop) are robots. Robots (automatized programs, not robots like Marvin the Paranoid Android) are frequently used in the Internet world. The word bot is an abbreviation of the word robot. Let's see what these attacks are all about and let's look into the product of their evolution: botnet attacks. This type of attacks, despite our vast experience and knowledge, still represent a severe threat today, and still give an attacker the edge. The reason why such attacks are so widespread is mainly their simplicity and difficulties in tracking down the parties involved. The notorious Distributed Denial of Services (DDoS) was born. The late nineties and the beginning of a new millennium brought a new strategy of attack against network systems. how malware works (trojans and worms in particular),.what preventive measures are available and how to respond to bot infestation.what are bots, botnets, and how they work,.Massimiliano Romano, Simone Rosignoli, Ennio Giannini

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