Hmm, that’s worrying. However, it would be nice to know some details:
- Why do you think Tiled is creating these folders?
- Where did you download Tiled?
- What are these folders named and what kind of files are created?
- Since when is this problem occurring and did you try de-installing Tiled? Did that help?
If it is really the Tiled executable, it was probably infected after being installed. So far, there have only been false positives and no actual reports of Tiled doing something malicious. The executable is built in a clean environment and Windows builds are signed by the SignPath Foundation.