According to Modmyifone.com all the app does is say “shoes.” However, when uninstalled, the application removes files from the /bin directory on the iPhone, breaking valid apps like Sendfile and Erica’s Utilities.

The Web site hosting the application was taken offline soon after it was discovered, reports F-Secure.

“Hopefully this serves as a warning for those who have opened their iPhones using a security hole in the system and then installing unverified software without a second thought to what they are doing,” said F-Secure on its Web site.

F-Secure reported that it was an 11-year-old kid playing with XML files who created the Trojan. “Next time it might be someone else with more skills and with specific target,” they said.