New Survey Lists Top Eleven Botnets

Joe Stewart, director of malware research at SecureWorks Inc., presented a survey ranking the top 11botnets that send an estimated 100 billion spam messages a day from over a million hacked systems.

Botnet # of bots Spam capability
1 Srizbi 315,000 60Billion/day
2 Bobax 185,000 9Billion/day
3 Rustock 150,000 30Billion/day
4 Cutwail 125,000 16Billion/day
5 Storm 85,000 3Billion/day
6 Grum 50,000 2Billion/day
7 Onewordsub 40,000 Unknown
8 Ozdok 35,000 10Billion/day
9 Nucrypt 20,000 5Billion/day
10 Wopla 20,000 600Million/day
11 Spamthru 12,000 350Million/day

Stewart’s research also helps categorize bots and reduce confusion regarding different botnets under the same name, proving through SMTP ‘fingerprints’ that certain previously discovered bots like “Kracken” are
really just variations of existing bots, in the case of Kracken, Bobax.

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    • Author: Christopher

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