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Tuesday, February 9, 2021

Your AV is Trying to Tell You Something: process.log

processlog_Format.md

Client Management Control Log

The process log contains client activities that occured on the endpoint. The types of events the process log reports on are application control driver, application control rules, or tamper protect. There is little difference from the actual log and the Windows client. The process log is one of the more human readable logs.

Control Log File Format

The control log for SEP can be found at the following location: C:\ProgramData\Symantec\Symantec Endpoint Protection\CurrentVersion\Data\Logs\processlog.log

Field Type Size Description
Log Type hex 8 Always 00000004
Max Log Size hex 8 Maximum log file size in bytes
Unknown hex 8 ?
Number of Entries hex 8 Number of entries in log
Unknown hex 8 ?
Running Total Entries hex 16 Total number of events generated
Max Log Days hex 8 Maximun days to save log entries

Log Entries

The log is in TSV format, meaning, each field is separated by a tab character.

Field Type Size Description
Entry Length hex 3 Length of log entry
Date and Time Windows: 64 bit Hex Value - Big Endian 16 The time of the generated event (GMT).
Event ID hex 3 An event ID from the sending agent:
501 = Application Control Driver
502 = Application Control Rules
999 = Tamper Protection
Severity int 1 The seriousness of the event
0 is most serious.
Action int 1 The action that was taken:
0 = allow
1 = block
2 = ask
3 = continue
4 = terminate
Test Mode int 1 Was this rule run in test mode?
0 = No, Else = Yes
Description nvarchar 8000 The behavior that was blocked.

Because of a character limit, actual values may be longer than the values that
are displayed in Symantec Endpoint Protection Manager. You can verify the full text on the client that reports this data.
API nvarchar 512 The API that was blocked.
Unknown hex 16 Will require further investigation as to the purpose of this log entry.
Begin Time Windows: 64 bit Hex Value - Big Endian 16 The start time of the security issue.
End Time Windows: 64 bit Hex Value - Big Endian 16 The end time of the security issue. This field is an optional field because the
exact end time of traffic may not be detected; for example, as with UDP traffic.
If the end time is not detected, it is set to equal the start time.
Rule Name nvarchar 512 The name of the rule that was triggered by the event. If the rule name is not
specified in the security rule, then this field is empty. Having the rule name can
be useful for troubleshooting.
Caller Process ID hex 4 The ID of the process that triggers the logging.
Caller Process nvarchar 512 The full path name of the application involved. It may be empty if the
application is unknown, or if OS itself is involved, or if no application is involved.
Also, it may be empty if profile says, "don't log application name in raw traffic log".
Unknown int 1 Will require further investigation as to the purpose of this log entry.
Caller Return Module Name nvarchar 512 The module name of the caller. See CallerReturnAddress for more information.
Target nvarchar ? Name of file
Location nvarchar 512 The location used when the event occured.
User nvarchar 512 The logon user name.
User Domain nvarchar 512 The logon (Windows) domain name.
Unknown int 1 Will require further investigation as to the purpose of this log entry.
Unknown int 1 Will require further investigation as to the purpose of this log entry.
IPV4 Address hex 8 The IP address of the computer associated with the application control violation.
Device Instance ID varchar 256 The GUID of an external device (floppy disk, DVD, USB device, etc.).
File Size hex 2 The size of the file associated with the application control violation, in bytes.
Unknown hex 8 Will require further investigation as to the purpose of this log entry.
IPV6 Address hex 32 The IP address of the computer associated with the application control violation. (IPV6)

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