Benign DGA from TcpRoute2

[suqitian]

• A cluster from our LTCA(Long tail cluster algorithms).

Date	Hostname
20170418	1492462334dshsdjhsdsgsevstyhndrdrntrtvsvstbruiuok095g.com
20170418	1492459806dshsdjhsdsgsevstyhndrdrntrtvsvstbruiuok095g.com
20170418	1492462441dshsdjhsdsgsevstyhndrdrntrtvsvstbruiuok095g.com
20170418	1492460830dshsdjhsdsgsevstyhndrdrntrtvsvstbruiuok095g.com
20170418	1492462508dshsdjhsdsgsevstyhndrdrntrtvsvstbruiuok095g.com
20170419	1492589511dshsdjhsdsgsevstyhndrdrntrtvsvstbruiuok095g.com
20170419	1492590065dshsdjhsdsgsevstyhndrdrntrtvsvstbruiuok095g.com
20170419	1492590773dshsdjhsdsgsevstyhndrdrntrtvsvstbruiuok095g.com
20170419	1492590072dshsdjhsdsgsevstyhndrdrntrtvsvstbruiuok095g.com
20170419	1492590075dshsdjhsdsgsevstyhndrdrntrtvsvstbruiuok095g.com

• Actually, these domains were generated by an application named TcpRoute2.

go func() {
    defer wg.Done()
        for _, q := range queries {
            domain := fmt.Sprint(time.Now().Unix(), "dshsdjhsdsgsevstyhndrdrntrtvsvstbruiuok095g.com")
            q.query(domain, recordChan, exitChan)
        }
}()

• Do not need to block these queries on DNS service.