Multi-Stage Windows Malware Invokes PowerShell Downloader Using Text-based Payloads Using Remote Host

Security researchers uncovered SHADOW#REACTOR, a sophisticated multi-stage Windows malware campaign that uses obfuscated VBS and PowerShell to download base64-encoded payload fragments stored as plain text, validate and reconstruct them into .NET assemblies in memory, and ultimately deploy the Remcos RAT; the pipeline emphasizes evasion through text-only staging, reflective loading, and living-off-the-land techniques.