A new email malware campaign hides a malicious payload in what appears to be a Microsoft Compiled HTML Help file.

The Vidar spyware is spreading to PCs as threat actors have managed to hide it inside Microsoft Compiled HTML help files, and you can be infected in a click.

Trustwave The .iso contains two files: a Microsoft Compiled HTML Help (CHM) file (pss10r.chm) and an executable (app.exe). The CHM format is a Microsoft online extension file for accessing ...

Threat actors are hiding Vidar spyware inside Microsoft Compiled HTML Help (CHM) files as part of an email spam campaign. Vidar can be used to steal information from a computer, such as user data.

I need to find a way to open a compiled HTML Help file directly to a specific topic/target. I couldn't find the syntax needed to do this with the downloaded HTML Help workshop docs View image ...

The trick to this particular campaign is that it conceals its complex malware behind a Microsoft Compiled HTML Help (.CHM) file, Microsoft’s proprietary file format for help documentation saved ...