PowerShell IEX/IRM download cradle from bare-IP ClickFix infrastructure

Detects the use of a common PowerShell download cradle (Invoke-Expression with Invoke-RestMethod) targeting a direct IP address. This pattern is frequently observed in 'ClickFix' style attacks where users are tricked into copying and pasting malicious commands into their terminal, which then pull secondary payloads from adversary-controlled infrastructure.