The threat actor's commonly attributed name is ZINC. An actor known as ZINC has conducted a number of social engineering campaigns utilizing weaponized legitimate open-source software.
For these attacks, ZINC uses a variety of open-source software, including PuTTY, KiTTY, TightVNC, Sumatra PDF Reader, and the muPDF/Subliminal Recording software installer.
What is ZINC?
ZINC is a highly operational, destructive, and sophisticated nation-state activity group. The activity group has been active since 2009 and gained public attention in 2014 after a successful attack on Sony Pictures Entertainment. ZINC is known to use a variety of custom remote access tools (RATs), including those identified as FoggyBrass and PhantomStar by Microsoft.
ZINC attempts to coerce employees of companies into installing seemingly benign programs or opening weaponized documents containing malicious macros.
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