WinRAR Data Staging via Archive Creation Prior to Exfiltration

Ibrahim Saud@tektrix

•updated Jun 30, 2026•2•0•8

Detects execution of WinRAR utilities (rar.exe, winrar.exe) where the command line contains the '-a' (add to archive) flag or involves paths typically associated with data staging (Temp, AppData, Users, or Public directories), which may indicate an attempt to archive collected data prior to exfiltration.