Operation DragonReturn JPEG Payload Download via URLDownloadToFile

Ibrahim Saud@tektrix

•updated Jun 30, 2026•1•0•8

Detects the download of potential second-stage malicious payloads disguised as JPEG files to the C:\Windows\ directory using the URLDownloadToFile method. This activity is associated with Operation DragonReturn, where attackers save payloads as background.jpg for later decryption and execution.