"Botnets are networks of computers infected by malicious programs called bots.Bots allow cybercriminals to take control of a compromised machine and use its resources for their own goals – distributing spam, launching DDoS attacks, scams etc. Since the advent of botnets, the number of cybercrimes has increased enormously. However, botnets are not just a tool for cybercriminals; they are at the core of cybercriminal activity – the center that links and unites the various parts of the cybercriminal world.
The suppliers of cybercriminal services are just one part of the cybercrime network. The main services they offer their customers include the development of malicious code, encryption and packing, provision of guarantor services, bulletproof hosting, redirection of traffic and the creation of browser exploits.
When it comes to committing cybercrimes, malicious code is the main tool used by criminal gangs. Botnet owners place orders for both bots and other malicious programs such as viruses, Trojans, worms, applications designed to attack remote computers via a computer network, keyloggers, etc.
Malware developers offer their services on public sites or closed Internet resources. Most of those advertising their services are relatively unskilled from a technical point of view. Some malware writers, however, are highly skilled and capable of creating very sophisticated and dangerous malware.
As in any area of business, scammers also take an interest. The need to protect the interests of the buyers and the suppliers of cybercriminal services has led to the appearance of so-called guarantors. These guarantors are usually moderators of popular hacker forums. " – Content courtesy of Viruslist.com – The botnet ecosystem