Thailand has reached #1 in attacks against my server


The number of attacks from Thailand has been a significant fraction of the total for several months. In the past 24 hours I saw attacks from 51 address in Thailand, 241 in the past week. That exceeds the runner-up country (US) by a factor of five. Ten months ago I noted that Italy was the source of a disproportionate number of attacks.

Every single recent attack from Thailand has attempted to register a bogus WordPress account via a POST /wp-login.php?action=register request. Some piece of malware has managed to successfully infect a huge number of personal computers in Thailand and nowhere else. All of the computers are in the totbb.net domain

Below is the most recent such request. The details of the user login and email vary but the other details are pretty consistent.

P.S., I recognize that the numbers I’m reporting are insignificant compared to most web servers let alone the Internet as a whole. But that’s the point. My web server (blog) is only a little over a year old. My server is itself insignificant. Which means I have relatively little traffic to wade through. Which makes detecting some problems and trends easier.

POST /wp-login.php?action=register HTTP/1.1
Host: www.skepticism.us
Cookie: wordpress_test_cookie=WP+Cookie+check
Connection: Keep-Alive
User-Agent: Opera/9.80 (Windows NT 6.2; Win64; x64) Presto/2.12.388
Version/12.17
Accept: text/html, application/xml;q=0.9, application/xhtml+xml, image/png,
image/webp, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1
Accept-Language: en
Accept-Encoding: gzip, deflate
Referer: /wp-login.php?action=register
Content-Type: application/x-www-form-urlencoded
Content-Length: 109

user_login=PattiThorne3&user_email=pattisabj9571%40admin2%40metalchopsaw.info&redirect_to=&wp-submit=Register