U.S. and European law enforcement agencies have shut down a highly sophisticated piece of the botnet that had infected more than 12,000 computers worldwide. Botnet allows hackers to steal victims’ banking information and other sensitive data. Beebone Botnet is a downloader software (kind of botnet downloader) that installs other forms of malicious software, including ransomware and rootkits, onto victims’ machines without their even consent. The size of the network it infected was not significant, but operators managed to maintain control of the infected machines over the years.
Source: https://thehackernews.com/2015/04/beebone-botnet-malware-hacking.html