feat: persistent Security poll cursor with lookback replay (2.0.36-SAC)

Save last_security_poll.txt between runs and replay Security events up to SecurityEventsLookbackMinutes on startup so slow boot or late agent start does not miss RDP/WinRM-related logons.

Co-authored-by: Cursor <cursoragent@cursor.com>

Login_Monitor.ps1

@@ -90,7 +90,7 @@ $script:SkipLogDetailLimit = 15
 # строки ниже, если правки «мелкие» и вы не хотите менять отображаемую версию в логах).
 # Рекомендация: при значимых релизах меняйте и $ScriptVersion, и version.txt одинаково; при только
 # исправлениях на шаре — достаточно поднять patch в version.txt (например 1.3.0.1).
-$ScriptVersion = "2.0.35-SAC"
+$ScriptVersion = "2.0.36-SAC"
 
 # Логи (все под InstallRoot)
 $LogFile = Join-Path $script:InstallRoot "Logs\login_monitor.log"
@@ -111,6 +111,7 @@ $HeartbeatStaleAlertMultiplier = 2
 $LoginSuccessNotifyDedupSeconds = 90
 $HeartbeatFile = Join-Path $script:InstallRoot "Logs\last_heartbeat.txt"
 $GatewayPollCursorFile = Join-Path $script:InstallRoot "Logs\last_rdgateway_poll.txt"
+$SecurityPollCursorFile = Join-Path $script:InstallRoot "Logs\last_security_poll.txt"
 $DeployUpdateMarkerFile = Join-Path $script:InstallRoot "deploy_last_update.txt"
 # Построчные правила подавления уведомлений Security 4624/4625 (см. ignore.lst.example в репозитории).
 $script:IgnoreListPath = Join-Path $script:InstallRoot "ignore.lst"
@@ -132,6 +133,8 @@ $RDGatewayLogName = "Microsoft-Windows-TerminalServices-Gateway/Operational"
 $RDGatewayEvents = @(302, 303)
 # Макс. возраст сохранённого курсора RD Gateway (мин): если файл старше — replay не делаем.
 $GatewayEventsLookbackMinutes = 60
+# Security 4624/4625/4648: персистентный cursor + replay не старше N мин (медленный boot / поздний старт агента).
+$SecurityEventsLookbackMinutes = 60
 
 # RDP Remote Connection Manager (workstations): User authentication succeeded — событие 1149
 $RcmLogName = "Microsoft-Windows-TerminalServices-RemoteConnectionManager/Operational"
@@ -3563,6 +3566,51 @@ function Set-RdpGatewayPollCursor {
     }
 }
 
+function Get-RdpSecurityPollCursor {
+    $now = Get-Date
+    $fresh = $now.AddSeconds(-10)
+    $maxAgeMin = [math]::Max(1, [int]$SecurityEventsLookbackMinutes)
+    $lookbackFloor = $now.AddMinutes(-1 * $maxAgeMin)
+
+    if (-not (Test-Path -LiteralPath $SecurityPollCursorFile)) {
+        Write-Log "Security: cursor отсутствует — replay с $($lookbackFloor.ToString('dd.MM.yyyy HH:mm:ss')) (lookback ${maxAgeMin} мин)."
+        return $lookbackFloor
+    }
+    try {
+        $raw = (Get-Content -LiteralPath $SecurityPollCursorFile -TotalCount 1 -ErrorAction Stop).Trim()
+        if ([string]::IsNullOrWhiteSpace($raw)) {
+            Write-Log "Security: cursor пуст — replay с $($lookbackFloor.ToString('dd.MM.yyyy HH:mm:ss')) (lookback ${maxAgeMin} мин)."
+            return $lookbackFloor
+        }
+        $parsed = [datetime]::Parse($raw, [Globalization.CultureInfo]::InvariantCulture, [Globalization.DateTimeStyles]::RoundtripKind)
+        if ($parsed.Kind -eq [DateTimeKind]::Utc) {
+            $parsed = $parsed.ToLocalTime()
+        }
+        if ($parsed -lt $lookbackFloor) {
+            Write-Log "Security: cursor старше $maxAgeMin мин — replay с $($lookbackFloor.ToString('dd.MM.yyyy HH:mm:ss'))."
+            return $lookbackFloor
+        }
+        Write-Log "Security: cursor=$($parsed.ToString('dd.MM.yyyy HH:mm:ss')) (lookback cap ${maxAgeMin} мин)."
+        return $parsed
+    } catch {
+        Write-Log "Security: не удалось прочитать cursor ($SecurityPollCursorFile) — replay с $($lookbackFloor.ToString('dd.MM.yyyy HH:mm:ss'))."
+        return $lookbackFloor
+    }
+}
+
+function Set-RdpSecurityPollCursor {
+    param([Parameter(Mandatory = $true)][datetime]$Cursor)
+    try {
+        $dir = Split-Path -Parent $SecurityPollCursorFile
+        if (-not (Test-Path -LiteralPath $dir)) {
+            New-Item -ItemType Directory -Path $dir -Force | Out-Null
+        }
+        Write-TextFileUtf8Bom -Path $SecurityPollCursorFile -Text ($Cursor.ToString('o'))
+    } catch {
+        Write-Log "WARN: Security cursor save failed: $($_.Exception.Message)"
+    }
+}
+
 function Test-RdgGatewayBenignErrorCode {
     param([string]$ErrorCode)
     if ([string]::IsNullOrWhiteSpace($ErrorCode)) { return $true }
@@ -4215,7 +4263,7 @@ function Start-LoginMonitor {
         $nextInventoryTime = (Get-Date).AddSeconds($InventoryIntervalSec)
         $nextRotationCheck = Check-AndRotateLog
         $nextReportCheck = Check-AndSendDailyReport
-        $lastCheckTime = (Get-Date).AddSeconds(-10)
+        $lastCheckTime = Get-RdpSecurityPollCursor
         if ($rdGatewayAvailable) {
             $lastGatewayCheckTime = Get-RdpGatewayPollCursor
             Write-Log "RD Gateway: опрос 302/303 включён, cursor=$($lastGatewayCheckTime.ToString('dd.MM.yyyy HH:mm:ss'))"
@@ -4425,6 +4473,7 @@ function Start-LoginMonitor {
                 }
                 $lastCheckTime = Update-MonitorPollCursor -CurrentCursor $lastCheckTime -Events @($events)
             }
+            Set-RdpSecurityPollCursor -Cursor $lastCheckTime
 
             if ($rdGatewayAvailable) {
                 Set-MonitorLoopPhase -Phase 'poll_rdgateway'