I'm running MacOSX 10.6.4, and today I noticed an empty folder in my home directory named "愮敧n嬀条". I certainly don't know where this came from. Google translation tools don't say much useful stuff, apparently the translation from chinese to english reads "N Gui Yao Ji article". A google search for the original or translated terms doesn't find anything useful.
According to Finder the folder was last modified on the 3rd of July at 13:22. According to python's os.stat() on the file, the creation date is the same, which means that I run something yesterday at that point in time which created the folder.
I have a Time Machine backup made a few hours before, at 11:21 of the same day, and when I open this backup the mysterious directory doesn't exist there.
I searched for all modified files on the 3rd of July with the spotlight keyword search
date:3/07/10-3/07/10. That shows I did run Steam and browsed some indie games. From my browsing I did run the demo of Chains and tried to run under wine the demos of FiNCK and Saira without much success, since they refused to run.
Other than that I didn't run any other suspicious software. Does somebody know if this means I have a trojan running on the machine? Running
ps ax doesn't reveal anything suspicious and I don't know what I can do to troubleshoot further the issue.