This inner file triggers an automatic download of a final malware payload, bypassing MotW restrictions entirely.
Opening it reveals an inner archive (sometimes disguised with Cyrillic characters to look like a document). 3sg.7z
Attackers used a nested archive technique (an archive inside another archive). While the outer file (like 3sg.7z ) would be flagged by Windows as downloaded from the internet, the inner archive would not inherit this "Mark of the Web" tag. This inner file triggers an automatic download of