ClickFix update.zip extraction sequence via cmd.exe

Daniel Jeremiah@daniyyell

•updated Jun 19, 2026•0•0•7

This rule detects the execution of a specific command-line sequence involving 'cmd.exe' that is characteristic of the ClickFix attack. The sequence includes moving an 'update.zip' file from the user's downloads, extracting a 'u.zip' file in the temporary directory, and then executing 'update.bat'. This pattern is often associated with malicious copy-paste techniques.