New Big Head Ransomware Propagates via Malvertising

A newly discovered ransomware strain dubbed Big Head is spreading through malvertising, which involves the promotion of fake Windows updates and Microsoft Word installers, warned Trend Micro. Designed as a .NET binary, the ransomware deploys three AES-encrypted files on the targeted system: one for spreading the malware, another for facilitating communication with a Telegram bot, and the third for encrypting files.