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

The Microsoft Compiled HTML Help file is a type of file that’s usually intended to share support documentation, so you might be tempted to click then extract it when you open the original ...

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.

A new cybercrime campaign has been discovered that abuses Microsoft HTML help files to distribute the Vidar malware. Cybersecurity researchers from Trustwave reported of a threat actor ...

On Thursday, Trustwave cybersecurity researcher Diana Lopera said the spyware is being concealed in Microsoft Compiled HTML Help (CHM) files to avoid detection in email spam campaigns.