By Craig A Schiller; David Harley; Gadi Evron; Carsten Willems; Tony Bradley; All authors

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In step 5, the botclient reports the results of executing the command. en). Having at least one of these elements in another country also raises the difficulty of the investigation. If the investigator is charged with protecting one or more of the botnet clients, they will usually stop the investigation once they realize the individual damage to their enterprise is low, at least too low to justify a complex investigation involving foreign law enforcement. qxd 1/9/07 9:49 AM Page 31 Botnets Overview • Chapter 2 of tool.

If successful, RBot attempts to make a connection to the windows share (\\\ipc$), where the target is the IP address or name of the potential victim’s computer. If unsuccessful, the bot gives up and goes on to another computer. It may attempt to gain access using the account it is using on the attacking computer. Otherwise it attempts to enumerate a list of the user accounts on the computer. It will use this list of users to attempt to gain access. These will appear different from normal logins in that the workstation name will not be the local machine’s name.

In the following chapter we will describe alternative C&C technologies. Each botnet family has a set of commands that it supports. 1, among others (adapted from the Know Your Enemy series, “Tracking Botnets—Botnet Commands” by the Honeynet Project). 1 Botnet Command Examples Function Command Code Recruiting (scanall|sa) (scanstats|stats) scandel [port|method] —[method] can be one of a list of exploits including lsass, mydoom, DameWare, etc. 1 continued Botnet Command Examples Function Command Code findfilestopp DDoS syn [ip] [port] [seconds|amount] [sip] [sport] [rand] udp [host] [num] [size] [delay] [[port]]size) ping [host] [num] [size] [delay]num There are more details about IRC C&C in Chapter 8.

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