New Archive Format Smuggling Malware
released on 2021-06-24 @ 01:42:21 PM
Trustwave reports that they have observed the Agent Tesla malware spreading over malicious e-mails with WIM (Windows Imaging Format) files attached to them. Said files are disguised as an invoice or consignment note. WIM is a file-based disk image format developed by Microsoft. The file format serves to deploy Windows software components and updates ever since Windows Vista.