Event Log

Prohlížeč událostí je součást operačního systému Windows od doby NT, která umožňuje správcům a uživatelům prohlížet protokoly událostí, obvykle přípony souborů .evt a .evtx, na místním nebo vzdáleném počítači.

• Grafická konzole : eventvwr.msc
• Powershell commandline příkazy: Get-Command | Select-String EventLog
• Powershell commandline příkazy pro uložené soubory .evt a .evtx: Get-Command | Select-String WinEvent

Bezpečnostní log

• Rychlý přehled Id událostí:

  Logon events	Description
  4624	A user successfully logged on to a computer. For information about the type of logon, see the Logon Types table below.
  4625	Logon failure. A logon attempt was made with an unknown user name or a known user name with a bad password.
  4634	The logoff process was completed for a user.
  4738	Account was changed (somehow)
  4647	A user initiated the logoff process.
  4648	A user successfully logged on to a computer using explicit credentials while already logged on as a different user.
  4779	A user disconnected a terminal server session without logging off.

  Logon type	Logon title	Description
  2	Interactive	A user logged on to this computer.
  3	Network	A user or computer logged on to this computer from the network.
  4	Batch	Batch logon type is used by batch servers, where processes may be executing on behalf of a user without their direct intervention.
  5	Service	A service was started by the Service Control Manager.
  7	Unlock	This workstation was unlocked.
  8	NetworkCleartext	A user logged on to this computer from the network. The user's password was passed to the authentication package in its unhashed form. The built-in authentication packages all hash credentials before sending them across the network. The credentials do not traverse the network in plaintext (also called cleartext).
  9	NewCredentials	A caller cloned its current token and specified new credentials for outbound connections. The new logon session has the same local identity, but uses different credentials for other network connections.
  10	RemoteInteractive	A user logged on to this computer remotely using Terminal Services or Remote Desktop.
  11	CachedInteractive	A user logged on to this computer with network credentials that were stored locally on the computer. The domain controller was not contacted to verify the credentials.

  💡 Čerpáno odtud

Získání informací o přihlášeních

• Takto si vyhledáme úspěšné přihlášení do počítače

  Get-EventLog -LogName Security | Where { $_.InstanceId -eq 4624 -or 4648 } | Select TimeGenerated,EventID,EntryType,ReplacementStrings
  

• Takto si vyhledáme neúspěšné přihlášení do počítače

  Get-EventLog -LogName Security | Where { $_.InstanceId -eq 4625 } | Select TimeGenerated,EventID,EntryType,ReplacementStrings
  

  💡 Když přidám za Select ještě Message, dozvím se mnohem detailnější informace.