3sg.7z Link

According to an article from Ars Technica , the 7-Zip utility contained a flaw that allowed attackers to bypass Windows' security feature. Key Details of the Vulnerability

This inner file triggers an automatic download of a final malware payload, bypassing MotW restrictions entirely. 3sg.7z

This allowed malicious files inside the inner archive to be executed without triggering standard Windows security warnings, such as SmartScreen. Attack Sequence: User downloads a malicious file like 3sg.7z . According to an article from Ars Technica ,

This vulnerability was patched in 7-Zip version 25.00 . Users are strongly advised to update to the latest version via the official 7-zip.org site to ensure they are protected. Safety Warning 3sg.7z

Opening it reveals an inner archive (sometimes disguised with Cyrillic characters to look like a document).