Security researchers at Check Point Research recently identified a malicious update.7z archive used in targeted attacks. This specific version contained a legitimate 7z.exe binary alongside a malicious DLL ( iscsiexe.dll ) used for post-compromise activities. File Identification & Safety
Application binaries, DLLs, configuration data, or license files Update.7z
Some software like the PCSX2 emulator uses update.7z as a staging file during its auto-update process. Users have reported bugs where this file remains in the application directory even after the update is complete. Update.7z