Woodgnat ClickFix/FileFix/CrashFix Lure - Browser-Spawned Payload Execution

Duo Tech@duotech

•updated Jun 24, 2026•3•0•12

Detects social engineering lures (like ClickFix, FileFix, and CrashFix) where a user is tricked into manually executing a malicious payload. This rule specifically looks for script interpreters (powershell.exe, cmd.exe, mshta.exe, wscript.exe, cscript.exe) or Living Off The Land Binaries (LOLBins) (rundll32.exe, msiexec.exe, regsvr32.exe, curl.exe, certutil.exe, bitsadmin.exe) being spawned as child processes of web browsers (chrome.exe, msedge.exe, firefox.exe, iexplore.exe, brave.exe, opera.exe) or explorer.exe (indicating execution from a Run dialog). Exclusions are in place for common benign browser update processes.