tetragon/windows: add uid to exec events in Windows #3785
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tixxdz
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May 31, 2025
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This commit modifies the process_monitor.c program to add the uid of the user launching the process. This uid is available via bpf_get_current_logon_id() bpf helper api. Signed-off-by: Anadi Anadi<[email protected]>
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This commit consumes the changes made in process_monitor.c program to send the user's login id as a part of exec event. This id is also enumerated for existing processes during enumeration when tetragon starts. This uid is a unique Login Identifier extracted from user's token, and is same as Token AuthenticationId field of TOKEN_STATISTICS structure, available when token is queried with TokenStatistics information class. This Authetication Id can be used to retrieve back the token, sid, user name etc. fields using the win32 API LsaGetLogonSessionData() Since the Login ID as a uint64 is unique per user, and is different between privileged and non-privileged sessions of the same user, it seems to be a good proxy for uid field in exec event. Signed-off-by: Anadi Anadi<[email protected]>
This commit fixes the CI tests to look for non zero uid in event json for exec events. Signed-off-by: Anadi Anadi<[email protected]>
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Description
This commit consumes the changes made in process_monitor.c program to send the user's login id as a part of exec event.
This id is also enumerated for existing processes during enumeration when tetragon starts.
This uid is a unique Login Identifier extracted from user's token, and is same as Token AuthenticationId field of TOKEN_STATISTICS structure, available when token is queried with TokenStatistics information class.
This Authetication Id can be used to retrieve back the token, sid, user name etc. fields using the win32 API LsaGetLogonSessionData()
Since the Login ID as a uint64 is unique per user, and is different between privileged and non-privileged sessions of the same user, it seems to be a good proxy for uid field in exec event.
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