Appendix D - FIM Event Format

Example of the File Integrity Monitoring (FIM) events generated by a Snare Agent for Linux:

Note

This example shows the events in Snare format. The first four fields are the event header and may be formatted differently in other event formats (i.e. SYSLOG)

Below is a table describing the contents of a FIM Event generated by Snare Agent.

Field	Type	Description
Hostname	String	The host name of the originating computer.
EventType	String	FIMLog - the type of event generated.
SecurityLevel	Integer	The severity level (Criticality) of the generated event.
EventTime	Datetime	The time at which the modification was detected. (YYYY-MM-DDThh:mm:ss)
DigestType	String	SHA512 - the hashing algorithm used.
EventAction	String	One of CHANGE, DELETE, RENAME or NEW.
ObjectType	String	FILE
ObjectName	String	The full path name of the object that has been added, removed, changed or renamed.
ObjectSize	Integer	The size of the object in bytes after the modification.
ObjectOwner	String	The owner of the object that the change was detected on.
ObjectMTime	Datetime	The modification time (mtime) of the object when the change is detected. (YYYY-MM-DDThh:mm:ss)
ObjectDigest	String	The calculated digest (checksum) value.
ObjectAttributes	Integer	The attributes of the object as a bit-wise integer value.
PrevObjectName	String	The name of the object that had been added, removed, changed or renamed from the previous scan or empty if no previous object exists.
PrevObjectSize	Integer	The size of the object in bytes from the previous scan. 0 if no previous object exists.
PrevObjectOwner	String	The owner of the object from the previous scan. Empty string if no previous object exists.
PrevObjectMTime	Datetime	The modification time (mtime) of the object from the previous scan or empty if no previous object exists. (YYYY-MM-DDThh:mm:ss)
PrevObjectDigest	String	The calculated digest (checksum) value from the previous scan. Empty string if no previous object exists.
PrevObjectAttributes	Integer	The attributes of the object from the previous scan as bit-wise integer value. 0 if no previous object exists.
EventSourceId (optional)	String	Additional data to be included in each event as specified in Event Options settings of the Agent

Please refer to The Web User Interface (UI) → File Integrity Monitoring page in this User Guide for instructions on how to configure periodic FIM scans in the Snare Agent.

Snare Linux Agent v5 Documentation

Appendix D - FIM Event Format

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