4 ms·

Was this a technically difficult operation to undertake? How long did it take to plan and execute? i'm assuming that it's not that tedious of a task to scale an

Was this a technically difficult operation to undertake? How long did it take to plan and execute? i'm assuming that it's not that tedious of a task to scale and automate. In going through this exercise were you able to come up with ideas to combat spam more effectively?

waitwhatwhoa 16y ago
I wouldn't say it was incredibly technically difficult, the worst parts were probably reverse engineering the somewhat funky custom encoding that the botmaster was using for the C&C communication, and then writing the custom router software to allow us to rewrite live tcp flows (we used click: http://read.cs.ucla.edu/click/click http://read.cs.ucla.edu/click/click). We first started experimenting with the storm botnet about six months before doing this experiment. Once we realized what their architecture allowed us to do (MITM on the botnet's C&C), it probably only took a month or two to put together the infrastructure needed to conduct the experiment. Scaling to more nodes would have been relatively trivial, as the VMs running the Storm nodes were completely unmodified and we could have easily brought more online behind our flow-modifying router if necessary. A colleague of mine did come up with one idea called "botnet judo" (paper here: http://www.cs.ucsd.edu/~voelker/pubs/judo-ndss10.pdf http://www.cs.ucsd.edu/~voelker/pubs/judo-ndss10.pdf) whereby we run spamming bots within a contained environment that "seems" to have SMTP connectivity but actually just sinkholes all the spam, and then we developed highly effective and specific regular expressions from each bot's spam corpus.
- jamesshamenski 16y ago
  Wow, that's really great. Thanks for the insight! Was this project done as a thesis paper or was there an alternative purpose for undertaking such a long project? I'm pretty impressed with the execution of your team.
  - waitwhatwhoa 16y ago
    I wouldn't consider it "a thesis paper," but this project will eventually be part of my PhD thesis. Overall I would just say that we just seized the opportunity and wrote a decent paper. I, too, am impressed with our team and certainly would be nowhere without it. Glad you've enjoyed our work!

waitwhatwhoa 16y ago

I wouldn't say it was incredibly technically difficult, the worst parts were probably reverse engineering the somewhat funky custom encoding that the botmaster was using for the C&C communication, and then writing the custom router software to allow us to rewrite live tcp flows (we used click: http://read.cs.ucla.edu/click/click http://read.cs.ucla.edu/click/click). We first started experimenting with the storm botnet about six months before doing this experiment. Once we realized what their architecture allowed us to do (MITM on the botnet's C&C), it probably only took a month or two to put together the infrastructure needed to conduct the experiment. Scaling to more nodes would have been relatively trivial, as the VMs running the Storm nodes were completely unmodified and we could have easily brought more online behind our flow-modifying router if necessary. A colleague of mine did come up with one idea called "botnet judo" (paper here: http://www.cs.ucsd.edu/~voelker/pubs/judo-ndss10.pdf http://www.cs.ucsd.edu/~voelker/pubs/judo-ndss10.pdf) whereby we run spamming bots within a contained environment that "seems" to have SMTP connectivity but actually just sinkholes all the spam, and then we developed highly effective and specific regular expressions from each bot's spam corpus.

jamesshamenski 16y ago
Wow, that's really great. Thanks for the insight! Was this project done as a thesis paper or was there an alternative purpose for undertaking such a long project? I'm pretty impressed with the execution of your team.
- waitwhatwhoa 16y ago
  I wouldn't consider it "a thesis paper," but this project will eventually be part of my PhD thesis. Overall I would just say that we just seized the opportunity and wrote a decent paper. I, too, am impressed with our team and certainly would be nowhere without it. Glad you've enjoyed our work!