WINDOWS. PS IOC

 Propósito

Dada una palabra o un ejecutable, buscar un IOC (Indicador de compromiso) en un Host.

Introduces las palabras clave y el script analiza:

• Procesos
• Servicios
• Tareas programadas
• Carpetas sospechosas
• Claves RUN / RUNONCE
• Servicios en el registro
• Búsqueda de binarios en AppData / Temp
• Exportación CSV
• Programas instalado
• Ejecución en RAM

·         Startup del usuario y del sistema

Pasos

Para ejecutar: powershell.exe -ExecutionPolicy Bypass -File .\BuscasIOC.ps1

<#     Detect-Strings-Extended.ps1     Autor: Guillermo     Objetivo:         Script INFORMÁTICO que analiza el equipo para encontrar cualquier rastro         de cadenas sospechosas en:               • Programas instalados             • Procesos en RAM             • Servicios             • Tareas programadas             • Carpetas sospechosas             • Entradas en RUN / RUNONCE             • Servicios en el Registro             • Archivos en AppData / Temp             • Programas configurados en el inicio de Windows           NO modifica nada. NO detiene nada. NO elimina nada. #>   Write-Host "======================================================" -ForegroundColor Cyan Write-Host "   ANALIZADOR DE INDICADORES - MODO INFORMATIVO"       -ForegroundColor Cyan Write-Host "======================================================" -ForegroundColor Cyan   # 1) Pedir cadenas al usuario $input = Read-Host "Introduce las cadenas a buscar (separadas por coma). Ej: updater, malware, test" $patterns = $input.Split(",") | ForEach-Object { $_.Trim() } | Where-Object { $_ -ne "" }   if ($patterns.Count -eq 0) {     Write-Host "No se han introducido cadenas. Saliendo..." -ForegroundColor Red     exit }   Write-Host "`nCadenas a buscar:" -ForegroundColor Yellow $patterns | ForEach-Object { Write-Host " - $_" -ForegroundColor Green }   # Convertir a regex OR $regex = ($patterns -join "|")   $results = New-Object System.Collections.Generic.List[object]   function Add-Result($Tipo,$Ruta,$Detalle) {     $results.Add([pscustomobject]@{         Tipo    = $Tipo         Ruta    = $Ruta         Detalle = $Detalle     }) }   # ===================================================================== # [0] PROGRAMAS INSTALADOS (Add/Remove Programs) # ===================================================================== Write-Host "`n========== [0] PROGRAMAS INSTALADOS ==========" -ForegroundColor Cyan   $installedApps = Get-ItemProperty HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*, `                                   HKLM:\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*, `                                   HKCU:\Software\Microsoft\Windows\CurrentVersion\Uninstall\* `                     -ErrorAction SilentlyContinue   foreach ($app in $installedApps) {     if ($app.DisplayName -match $regex) {         Add-Result "Programa Instalado" $app.DisplayName $app.DisplayVersion         Write-Host "Programa detectado: $($app.DisplayName)" -ForegroundColor Green     } }   # ===================================================================== # [1] PROCESOS # ===================================================================== Write-Host "`n========== [1] PROCESOS ==========" -ForegroundColor Cyan Get-Process -ErrorAction SilentlyContinue |     Where-Object { $_.Name -match $regex } |     ForEach-Object {         Add-Result "Proceso" ($_.Path) ($_.Name)         $_     }   # ===================================================================== # [2] SERVICIOS # ===================================================================== Write-Host "`n========== [2] SERVICIOS ==========" -ForegroundColor Cyan Get-Service -ErrorAction SilentlyContinue |     Where-Object { $_.Name -match $regex -or $_.DisplayName -match $regex } |     ForEach-Object {         Add-Result "Servicio" $_.Name $_.DisplayName         $_     }   # ===================================================================== # [3] TAREAS PROGRAMADAS # ===================================================================== Write-Host "`n========== [3] TAREAS PROGRAMADAS ==========" -ForegroundColor Cyan Get-ScheduledTask -ErrorAction SilentlyContinue |     Where-Object { $_.TaskName -match $regex -or $_.Description -match $regex } |     ForEach-Object {         Add-Result "Tarea Programada" $_.TaskName $_.Description         $_     }   # ===================================================================== # [4] CARPETAS HABITUALES # ===================================================================== Write-Host "`n========== [4] CARPETAS HABITUALES ==========" -ForegroundColor Cyan $paths = @(     "$env:LOCALAPPDATA",     "$env:LOCALAPPDATA\Programs",     "$env:APPDATA",     "$env:TEMP",     "$env:ProgramFiles",     "$env:ProgramFiles(x86)" )   foreach ($base in $paths) {     if (Test-Path $base) {         Get-ChildItem $base -Recurse -ErrorAction SilentlyContinue |             Where-Object { $_.Name -match $regex } |             ForEach-Object {                 Add-Result "Archivo/Carpeta" $_.FullName "Coincidencia en nombre"                 Write-Host "Encontrado: $($_.FullName)" -ForegroundColor Green             }     } }   # ===================================================================== # [5] RUN / RUNONCE # ===================================================================== Write-Host "`n========== [5] RUN / RUNONCE ==========" -ForegroundColor Cyan $runKeys = @(     "HKCU:\Software\Microsoft\Windows\CurrentVersion\Run",     "HKCU:\Software\Microsoft\Windows\CurrentVersion\RunOnce",     "HKLM:\Software\Microsoft\Windows\CurrentVersion\Run",     "HKLM:\Software\Microsoft\Windows\CurrentVersion\RunOnce" )   foreach ($rk in $runKeys) {     if (Test-Path $rk) {         $vals = Get-ItemProperty $rk -ErrorAction SilentlyContinue         foreach ($prop in $vals.PSObject.Properties) {             if ($prop.Name -notlike "PS*" -and (                 $prop.Name -match $regex -or ($prop.Value -as [string]) -match $regex             )) {                 Add-Result "RunKey" $rk "$($prop.Name) = $($prop.Value)"                 Write-Host "[RUN] $rk → $($prop.Name) = $($prop.Value)" -ForegroundColor Green             }         }     } }   # ===================================================================== # [6] SERVICIOS DEL REGISTRO # ===================================================================== Write-Host "`n========== [6] SERVICIOS DEL REGISTRO ==========" -ForegroundColor Cyan Get-ChildItem "HKLM:\SYSTEM\CurrentControlSet\Services" -ErrorAction SilentlyContinue |     Where-Object { $_.Name -match $regex } |     ForEach-Object {         Add-Result "RegistroServicio" $_.Name "Coincidencia en nombre de clave"         $_.Name     }   # ===================================================================== # [7] INICIO DE WINDOWS (Startup) # ===================================================================== Write-Host "`n========== [7] PROGRAMAS EN EL INICIO ==========" -ForegroundColor Cyan   $startupPaths = @(     "$env:APPDATA\Microsoft\Windows\Start Menu\Programs\Startup",     "$env:ProgramData\Microsoft\Windows\Start Menu\Programs\Startup" )   foreach ($sp in $startupPaths) {     if (Test-Path $sp) {         Get-ChildItem $sp -ErrorAction SilentlyContinue |             Where-Object { $_.Name -match $regex } |             ForEach-Object {                 Add-Result "Inicio Windows" $_.FullName "Coincidencia en acceso directo"                 Write-Host "En inicio: $($_.FullName)" -ForegroundColor Yellow             }     } }   # ===================================================================== # [8] BINARIOS EN APPDATA / TEMP # ===================================================================== Write-Host "`n========== [8] BINARIOS APPDATA / TEMP ==========" -ForegroundColor Cyan $binroots = @("$env:LOCALAPPDATA","$env:APPDATA","$env:TEMP")   foreach ($br in $binroots) {     if (Test-Path $br) {         Get-ChildItem $br -Recurse -ErrorAction SilentlyContinue |             Where-Object { $_.Name -match $regex } |             ForEach-Object {                 Add-Result "Binario" $_.FullName "Coincidencia en nombre"                 Write-Host "Binario detectado: $($_.FullName)" -ForegroundColor Green             }     } }   # ===================================================================== # RESUMEN + EXPORTACIÓN # =====================================================================   Write-Host "`n==============================================" -ForegroundColor Cyan Write-Host "                 RESUMEN" -ForegroundColor Cyan Write-Host "==============================================" -ForegroundColor Cyan   $results | Format-Table -AutoSize   # Nombre con fecha y hora $timestamp = (Get-Date).ToString("yyyy-MM-dd_HH-mm-ss") $output = "C:\Temp\Deteccion-Resultado_$timestamp.csv"   New-Item -ItemType Directory -Path (Split-Path $output) -Force | Out-Null $results | Export-Csv -Path $output -NoTypeInformation -Encoding UTF8   Write-Host "`nArchivo exportado: $output" -ForegroundColor Yellow Write-Host "`n--- ANÁLISIS FINALIZADO ---" -ForegroundColor Cyan

by GoN | Published: Jan 2026 | Last Updated: