Recently I discovered by taking a look at the stats that the number of updated links (257,066) is much more than the number of new links (15,568).
Immediately I thought of bots, so I created honeypots to trap them. When I trap a bot, I log this. When it is a new IP address I add it to the page Bots.
So far I have collected more than 200 unique IP addresses.
These bots are visiting ZOMDir regularly. To monitor this in more detail I have added some extra logging. Here are the results.
FrequencyThe bots try to manipulate in salvo's of 5 attacks. That is in a few seconds time, from the same IP address, they tried 5 different texts.
For example at these times (UTC) bot 188.8.131.52 visited ZOMDir.com:
- 2014-10-25 18:26:10.183
- 2014-10-25 18:26:11.600
- 2014-10-25 18:26:12.328
- 2014-10-25 18:26:13.306
- 2014-10-25 18:26:13.814
These salvo's where at a more or less regular interval.
See these times rounded at minutes of the 10 most recent salvo's (at the moment I started writing this blog):
- 2014-10-25 17:33 (184.108.40.206)
- 2014-10-25 17:38 (220.127.116.11)
- 2014-10-25 17:50 (18.104.22.168)
- 2014-10-25 17:53 (22.214.171.124)
- 2014-10-25 18:03 (126.96.36.199)
- 2014-10-25 18:15 (188.8.131.52)
- 2014-10-25 18:20 (184.108.40.206)
- 2014-10-25 18:21 (220.127.116.11)
- 2014-10-25 18:24 (18.104.22.168)
- 2014-10-25 18:26 (22.214.171.124)
There are roughly 10 to 12 salvo's per hour. In other words, more than 1000 times a day these bots tries to manipulate ZOMDir.
TextsOften the bots try to change the description of the link. I guess that the reason is that this is a textarea. This description will be shown as the tooltip text of the link.
Per salvo they try several texts. Examples of these texts are:
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URL'sA lot of different URL's are used in these texts. Examples of these URL's are:
I have tested these URL's with Safe Browsing at a Glance and they are all probably safe. I was not that sure about that, so I started Sandboxie to take a look at some of these URL's.
The results are strange. Half of these links are not working (404 error, database error, just an empty page or an incomplete not working form), and the other half seems to be random normal sites. So I wonder why are these bots doing this? Just trying, peeking and poking to see if something gets broken?
If you have a better idea, or have a suggestion how to stop them, please let me know.
ZOMDir.com is a dynamic directory and a wiki
Everone is able to add a link in 10 seconds
To learn more view this Slideshare presentation