Event-o-Pedia EventID 4648 - A logon was attempted using explicit credentials.

	Event Details
	Operating System->Microsoft Windows->Built-in logs->Windows 2008 or higher->Security Log->Logon/Logoff->Logon->EventID 4648 - A logon was attempted using explicit credentials.

EventID 4648 - A logon was attempted using explicit credentials.

Indicates that a user who is already logged on successfully created another logon session with different user's credentials.

Find more information about this event on ultimatewindowssecurity.com.

Corresponding events on other OS versions:

Windows 2003

EventID 552 - Logon attempt using explicit credentials [Win 2003]

Related events:

In order to find out the name of the program that attempted the logon look earlier
in the log for the following event with the same Process ID as in Caller Process ID field:

EventID 4688 - A new process has been created

Sample:

A logon was attempted using explicit credentials.

Subject:
	Security ID:		NT AUTHORITY\SYSTEM
	Account Name:		IIZHU6$
	Account Domain:		ITSS
	Logon ID:		0x3e7
	Logon GUID:		{D4918F83-5B5E-BB75-AC3F-4378D116CAEA}

Account Whose Credentials Were Used:
	Account Name:		igor.ilyin
	Account Domain:		ITSS
	Logon GUID:		{834EC459-3CEB-FFAC-3BDE-5C50389272A5}

Target Server:
	Target Server Name:	localhost
	Additional Information:	localhost

Process Information:
	Process ID:		0x4f0
	Process Name:		C:\Windows\System32\svchost.exe

Network Information:
	Network Address:	10.154.14.26
	Port:			0

This event is generated when a process attempts to log on an account by explicitly specifying that account’s credentials.  This most commonly occurs in batch-type configurations such as scheduled tasks, or when using the RUNAS command.
===========================
Description template stored in adtschema.dll:
===========================
A logon was attempted using explicit credentials.

Subject:
	Security ID:		%1
	Account Name:		%2
	Account Domain:		%3
	Logon ID:		%4
	Logon GUID:		%5

Account Whose Credentials Were Used:
	Account Name:		%6
	Account Domain:		%7
	Logon GUID:		%8

Target Server:
	Target Server Name:	%9
	Additional Information:	%10

Process Information:
	Process ID:		%11
	Process Name:		%12

Network Information:
	Network Address:	%13
	Port:			%14

This event is generated when a process attempts to log on an account by explicitly specifying that account s credentials.  This most commonly occurs in batch-type configurations such as scheduled tasks, or when using the RUNAS command.

Log Type:

Windows Event Log

Uniquely Identified By:

Log Name:

Security

Filtering Field	Equals to Value
OSVersion	Windows Vista (2008) Windows 7 (2008 R2) Windows 8 (2012) Windows 8.1 (2012 R2) Windows 10 (2016)
Category	Logon/Logoff
Source	Microsoft-Windows-Security-Auditing
TaskCategory	Logon
EventId	4648

Field Matching

Field	Description	Stored in	Sample Value
DateTime	Date/Time of event origination in GMT format.	DateTime	10.10.2000 19:00:00
Source	Name of an Application or System Service originating the event.	Source	Security
Type	Warning, Information, Error, Success, Failure, etc.	Type	Success
User	Domain\Account name of user/service/computer initiating event.	User	RESEARCH\Alebovsky
Computer	Name of server workstation where event was logged.	Computer	DC1
EventID	Numerical ID of event. Unique within one Event Source.	EventId	576
Description	The entire unparsed event message.	Description	Special privileges assigned to new logon.
Log Name	The name of the event log (e.g. Application, Security, System, etc.)	LogName	Security
Task Category	A name for a subclass of events within the same Event Source.	TaskCategory
Level	Warning, Information, Error, etc.	Level
Keywords	Audit Success, Audit Failure, Classic, Connection etc.	Keywords
Category	A name for an aggergative event class, corresponding to the similar ones present in Windows 2003 version.	Category	Account Logon
Object Name		-
Whom		InsertionString6
Object Type		-
Class Name		-
Security ID		-
Account Name		-
Account Domain		-
Subject: Security ID		InsertionString1	S-1-5-18
Subject: Account Name		InsertionString2	DCC1$
Subject: Account Domain		InsertionString3	LOGISTICS
Subject: Logon ID		InsertionString4	0x3e7
Subject: Logon GUID		InsertionString5	{00000000-0000-0000-0000-000000000000}
Account Whose Credentials Were Used: Account Name		InsertionString6	SYSTEM
Account Whose Credentials Were Used: Account Domain		InsertionString7	NT AUTHORITY
Account Whose Credentials Were Used: Logon GUID		InsertionString8	{00000000-0000-0000-0000-000000000000}
Target Server: Target Server Name		InsertionString9	localhost
Target Server: Additional Information		InsertionString10	localhost
Process Information: Process ID		InsertionString11	0x22c
Process Information: Process Name		InsertionString12	C:\Windows\System32\services.exe
Network Information: Network Address		InsertionString13	-
Network Information: Port		InsertionString14	-