Massive Malspam Campaign Finds a New Vector for FlawedAmmyy RAT

A widespread spam campaign from the well-known financial criminal group TA505 is spreading the FlawedAmmyy RAT using a brand-new vector: Weaponized PDFs containing malicious SettingContent-ms files.

The SettingContent-ms file format was introduced in Windows 10; it allows a user to create “shortcuts” to various Windows 10 setting pages.

“All this file does is open the Control Panel for the user [control.exe],” explained SpecterOps researchers in a recent posting on the format. “The interesting aspect of this file is the <DeepLink> element in the schema.

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Source: ThreatPost