private static void READ_WindowsEventLog_API(string Eventlog_FullName, long RecordID_From_Last_Read)
{
try
{
EventLogQuery eventsQuery = new EventLogQuery(Eventlog_FullName, PathType.LogName);
EventLogReader EventLogtoReader = new EventLogReader(eventsQuery);
EventLog_Entry SWELF_Eventlog;
while (GET_EventLogEntry_From_API(EventLogtoReader) != null)
{
try
{
SWELF_Eventlog = new EventLog_Entry();
if (Windows_EventLog_from_API.RecordId.Value > RecordID_From_Last_Read)
{
SWELF_Eventlog.CreatedTime = Windows_EventLog_from_API.TimeCreated.Value; //if this doesnt work we have issues that we cant fix
SWELF_Eventlog.EventLog_Seq_num = Windows_EventLog_from_API.RecordId.Value; //if this doesnt work we have issues that we cant fix
SWELF_Eventlog.EventID = Windows_EventLog_from_API.Id; //if this doesnt work we have issues that we cant fix
SWELF_Eventlog.LogName = Windows_EventLog_from_API.LogName;
try
{
SWELF_Eventlog.ComputerName = Windows_EventLog_from_API.MachineName;
}
catch (Exception e)
{
SWELF_Eventlog.ComputerName = Settings.ComputerName;
}
try
{
SWELF_Eventlog.Severity = Windows_EventLog_from_API.LevelDisplayName;
}
catch (Exception e)
{
try
{
SWELF_Eventlog.Severity = Windows_EventLog_from_API.OpcodeDisplayName;
}
catch
{
SWELF_Eventlog.Severity = Windows_EventLog_from_API.Level.Value.ToString();//if this doesnt work we have issues that we cant fix
}
}
try
{
SWELF_Eventlog.TaskDisplayName = Windows_EventLog_from_API.TaskDisplayName;
}
catch (Exception e)
{
SWELF_Eventlog.TaskDisplayName = Windows_EventLog_from_API.ProviderName;//if this doesnt work we have issues that we cant fix
}
try
{
if (Settings.AppConfig_File_Args.ContainsKey(Settings.SWELF_AppConfig_Args[16]))
{
SWELF_Eventlog.EventData = "CreationDate=" + SWELF_Eventlog.CreatedTime + "\r\nEventLog_Seq_Number=" + SWELF_Eventlog.EventLog_Seq_num + "\r\nEventID=" + SWELF_Eventlog.EventID + "\r\nSeverity=" + SWELF_Eventlog.Severity + "\r\nEventLogName=" + SWELF_Eventlog.LogName + "\r\n\r\n" + Windows_EventLog_from_API.FormatDescription().ToLower();
}
else
{
SWELF_Eventlog.EventData = Windows_EventLog_from_API.FormatDescription().ToLower();
}
}
catch (Exception e)
{
if (Settings.AppConfig_File_Args.ContainsKey(Settings.SWELF_AppConfig_Args[16]))
{
SWELF_Eventlog.EventData = "CreationDate=" + SWELF_Eventlog.CreatedTime + "\r\nEventLog_Seq_Number=" + SWELF_Eventlog.EventLog_Seq_num + "\r\nEventID=" + SWELF_Eventlog.EventID + "\r\nSeverity=" + SWELF_Eventlog.Severity + "\r\nEventLogName=" + SWELF_Eventlog.LogName + "\r\n\r\n" + Windows_EventLog_from_API.ToXml();
}
else
{
SWELF_Eventlog.EventData = Windows_EventLog_from_API.ToXml();//if this doesnt work we have issues that we cant fix
}
}
try
{
SWELF_Eventlog.GET_XML_of_Log = Windows_EventLog_from_API.ToXml();
if (string.IsNullOrEmpty(SWELF_Eventlog.GET_XML_of_Log))
{
SWELF_Eventlog.GET_XML_of_Log = "ERROR READING. Windows_EventLog_from_API.ToXml()";
}
}
catch (Exception e)
{
SWELF_Eventlog.GET_XML_of_Log = "ERROR READING. Windows_EventLog_from_API.ToXml() Exception Thrown";
}
try
{
SWELF_Eventlog.GET_FileHash();
}
catch (Exception e)
{
//unable to get file hashs from log
}
try
{
SWELF_Eventlog.GET_IP_FromLogFile();
}
catch (Exception e)
{
//unable to get IP values from log
}
//try
//{
// EventLogName.EventlogMissing = Sec_Checks.CHECK_If_EventLog_Missing(EventLogName, SWELF_Eventlog);
//}
//catch (Exception e)
//{
// EventLogName.EventlogMissing = true;
//}
//try
//{
// EventLogName.ID_Number_Of_Individual_log_Entry_EVENTLOG = Windows_EventLog_from_API.RecordId.Value;
//}
//catch (Exception e)
//{
// EventLogName.ID_Number_Of_Individual_log_Entry_EVENTLOG = 0;
//}
Data_Store.contents_of_EventLog.Enqueue(SWELF_Eventlog);
}
}
catch (Exception e)
{
Error_Operation.Log_Error("INDEX_Record_FROM_API() Missing Event Log(s) Due To Exception with log format while reading in eventlogs.", "EventLog='" + Eventlog_FullName + "' " + e.Message.ToString(), e.StackTrace.ToString(), Error_Operation.LogSeverity.Warning);
MissingLogInFileDueToException = true;
}
}
try
{
if (Settings.AppConfig_File_Args.ContainsKey(Settings.SWELF_AppConfig_Args[12]) || Settings.AppConfig_File_Args.ContainsKey(Settings.SWELF_AppConfig_Args[11]))
{
Settings.IP_List_EVT_Logs.AddRange(Settings.IP_List_EVT_Logs.Distinct().ToList());
Settings.Hashs_From_EVT_Logs.AddRange(Settings.Hashs_From_EVT_Logs.Distinct().ToList());
}
}
catch (Exception e)
{
Error_Operation.Log_Error("Settings.IP_List_EVT_Logs.AddRange() OR Settings.Hashs_From_EVT_Logs.AddRange()", e.Message.ToString(), e.StackTrace.ToString(), Error_Operation.LogSeverity.Warning);
}
MissingLogInFileDueToException = false;
}
catch (Exception e)
{
Error_Operation.Log_Error("READ_WindowsEventLog_API() Missing All Event Log(s) Due To Exception. ", "EventLog='" + Eventlog_FullName + "' " + e.Message.ToString() + " " + Eventlog_FullName + " " + RecordID_From_Last_Read, e.StackTrace.ToString(), Error_Operation.LogSeverity.FailureAudit);
MissingLogInFileDueToException = true;
}
}
internal void READ_EVTX_File(string FilePath)
{
using (var reader = new EventLogReader(FilePath, PathType.FilePath))
{
while ((Windows_EventLog_from_API = reader.ReadEvent()) != null)
{
try
{
EventLog_Entry Eventlog = new EventLog_Entry();
using (Windows_EventLog_from_API)
{
Eventlog.EventLog_Seq_num = Windows_EventLog_from_API.RecordId.Value;
Eventlog.ComputerName = Windows_EventLog_from_API.MachineName;
Eventlog.EventID = Windows_EventLog_from_API.Id;
Eventlog.CreatedTime = Windows_EventLog_from_API.TimeCreated.Value;
try
{
Eventlog.LogName = Windows_EventLog_from_API.LogName;
}
catch
{
Eventlog.LogName = Settings.SWELF_EventLog_Name;
}
try
{
Eventlog.Severity = Windows_EventLog_from_API.LevelDisplayName;
}
catch (Exception e)
{
try
{
Eventlog.Severity = Windows_EventLog_from_API.OpcodeDisplayName;
}
catch
{
Eventlog.Severity = Windows_EventLog_from_API.Level.Value.ToString();//if this doesnt work we have issues that we cant fix
}
}
try
{
Eventlog.TaskDisplayName = Windows_EventLog_from_API.TaskDisplayName;
}
catch
{
Eventlog.TaskDisplayName = Windows_EventLog_from_API.ProviderName;
}
try
{
Eventlog.EventData = Windows_EventLog_from_API.FormatDescription().ToLower();
Eventlog.GET_FileHash();
Eventlog.GET_IP_FromLogFile();
Eventlog.GET_XML_of_Log = Windows_EventLog_from_API.ToXml();
}
catch
{
Eventlog.GET_XML_of_Log = Windows_EventLog_from_API.ToXml();
Eventlog.EventData = Windows_EventLog_from_API.ToXml();
}
}
Data_Store.EVTX_File_Logs.Enqueue(Eventlog);
}
catch (Exception e)
{
Error_Operation.Log_Error("READ_EVTX_File()", e.Message.ToString() + "Event Log Missing due to improper format. Possible tampering or invalid format.", e.StackTrace.ToString(), Error_Operation.LogSeverity.FailureAudit);
}
}
}
}