Excel failed to warn the user before running any macro contained in a file in the SYLK file format, an almost-forgotten file type but one with which Microsoft Office had maintained compatibility.

If the Word doc is opened the victim will be presented with a malicious macro inside the file, which will try to execute when the document is opened. The downloaded file is a PowerShell script ...

Fellow security firm Morphisec has now analyzed the malware and notes the malicious Excel files could bypass ... ActiveX objects. The macro itself executes a JavaScript script designed to bypass ...

When the document is opened, if Office macros are turned on in ... The malicious script downloads Locky's malware executable file from a Web server and stores it in the "Temp" folder associated ...

A compressed version of the macro source code exists in Office files for compatibility reasons. But as long as the same version of the VBA engine used to create the script exists in the Office ...

Word macro spins up PowerShell script hosted on GitHub This week researcher Arkbird has shared details on a new macro-based malware that is evasive and spawns payload in multifaceted steps.

However, Microsoft finally disabled macros by default in Office ... which embeds an HTA file that launches a PowerShell script to retrieve a malicious payload from a remote server.