Enzoic for Active Directory – SIEM Logging

Enzoic for Active Directory logs important events to a JSON format log file which can be used for ingestion into SIEM systems. The following describes the information contained in these log entries.

Logs files are stored at ..\ProgramData\Enzoic\Enzoic for Active Directory\Logs

1.1 Log Entry Fields / Structure

Field Description
time Timestamp at which the event occurred.
threadId The managed .NET thread ID which was running.
level Level of event severity. This can be one of the following: INFO, WARN, ERROR.
eventData A JSON object containing additional details, specific to the event. The object has one field, “data” containing an object with the actual details.
event This is either a message or an enum value indicating the event kind. (see the eventKind field in table 1.2)

1.2 Event Data Content Fields – Common to All Events

Field Description
eventKind Indicates the nature of the event. See table 1.3 for possible values.
details Either a free-form complex object or extended message. Can be null.

1.3 Event Kinds

Name Description
Info General informational message.
Warning A recoverable problem, or unusual event has occurred.
Error A (possibly unrecoverable) problem has occurred, and may require user intervention or investigation.
PasswordChanged User account password was changed.
PasswordChangeRejected User account password change was attempted, but the password did not pass the integrity checks.
CompromiseDetectedDelayedRemediationScheduled A compromised password was detected, and was either remediated, or scheduled for remediation after a delay.
DelayedRemediationActionTaken A previously scheduled remediation was applied.

Event Data Content Fields – Additional, Depending on Event Kind

1.4 Info

No additional fields.

Example

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{
"time": "2019-08-07 16:24:57.2758",
"threadId": "22",
"level": "INFO",
"event": "Service shutdown.",
"eventData": {
"data": {
"eventKind": "Info",
"details": null
}
}
}

1.5 Warning

No additional fields

Example

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{
"time": "2019-08-07 15:02:37.3696",
"threadId": "10",
"level": "WARN",
"event": "The user tu1 no longer exists. Cleaning up artifacts related to this user.",
"eventData": {
"data": {
"eventKind": "Warning",
"details": null
}
}
}

1.6 Error

Field Description
exceptionClass The name of the .NET exception class, if there is an exception.
exceptionMessage The exception message, if there is an exception.

Example

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{
"time": "2019-08-07 15:02:37.3696",
"threadId": "10",
"level": "ERROR",
"event": "Something bad happened..",
"eventData": {
"data": {
"eventKind": "Error",
"details": null,
"“exceptionClass”": "Exception",
"“exceptionMessage“": "Exception text"
}
}
}

1.7 PasswordChanged

Field Description
user The SAM account name of the account that was updated.

Example

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{
"time": "2019-08-07 15:00:59.9008",
"threadId": "16",
"level": "INFO",
"event": "PasswordChanged",
"eventData": {
"data": {
"user": "tu1",
"eventKind": "PasswordChanged",
"details": null
}
}
}

1.8 PasswordChangeRejected

Field Description
user The SAM account name of the account on which the password change was attempted.

Example

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{
"time": "2019-08-13 13:34:40.7622",
"threadId": "21",
"level": "INFO",
"event": "The password is compromised and cannot be used.",
"eventData": {
"data": {
"user": "tu2",
"eventKind": "PasswordChangeRejected",
"details": null
}
}
}

1.9 CompromiseDetectedDelayedRemediationScheduled

Field Description
user The SAM account name of the affected account.
detectionTimestamp Timestamp of when the compromise was detected.
actionTaken Indicates the action that was taken in response to the compromise. See table 1.11 for possible values.
actionDelayHours The number of hours before the delayed remediation will take effect . This only applies when actionTaken is ForcePasswordChangeOnLoginDelayed or DisableAccountDelayed

Example

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{
"time": "2019-08-07 15:01:35.7445",
"threadId": "10",
"level": "INFO",
"event": "CompromiseDetectedDelayedRemediationScheduled",
"eventData": {
"data": {
"user": "tu1",
"detectionTimestamp": "2019-08-07T15:01:35.7134337-04:00",
"actionTaken": "ForcePasswordChangeOnLoginDelayed",
"actionDelayHours": 1,
"eventKind": "CompromiseDetectedDelayedRemediationScheduled",
"details": null
}
}
}

1.10 DelayedRemediationActionTaken

Field Description
user The SAM account name of the affected account.
detectionTimestamp Timestamp of when the compromise was detected.
actionTaken Possible values: ForcePasswordChangeOnLogin, DisableAccount
actionDelayHours Always zero.

Example

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{
"time": "2019-08-07 15:01:35.7445",
"threadId": "10",
"level": "INFO",
"event": "DelayedRemediationActionTaken",
"eventData": {
"data": {
"user": "tu1",
"detectionTimestamp": "2019-08-07T15:01:35.7134337-04:00",
"actionTaken": "ForcePasswordChangeOnLogin",
"actionDelayHours": 0,
"eventKind": "DelayedRemediationActionTaken",
"details": null
}
}
}

1.11 Remediation Actions

Name Description
ForcePasswordChangeOnLogin The affected user account is updated to require the password to be changed on the next login attempt.
ForcePasswordChangeOnLoginDelayed The affected user account is updated to require the password to be changed on the next login attempt. This action is delayed by the number of configured hours.
DisableAccount The affected user account is disabled.
DisableAccountDelayed The affected user account is disabled. This action is delayed by the number of configured hours.
NotifyOnly An email notification is sent to the configured recipients. No further remediation is taken.