Fancy animated icons and cursors? Those cute little elements that often come with desktop themes? Be careful the next time you download and use them, because an .ANI file was recently found to be not cute at all: it downloads a TROJ_SMALL variant. Here’s another reason why it’s not cute: to download the said Trojan, the malicious .ANI file, detected by Trend Micro as TROJ_ANICMOO.AX, exploits an undetermined vulnerability in Windows. A Web threat in its own right, the malicious .ANI file may be downloaded from the Internet, or may arrive embedded in HTML email messages. Trend Micro continues to analyze the malware and the vulnerability.