#Osquery packs full#
On the customer portal the “Systems Audit” menu provides full visibility on agents, queries and packs and the results of the audit for different time priods. Systems Audit Integration in Customer Portal ¶ This benchmark allows us to spot values that could be considered as “unusual” when checked against all other agents. The last tab is our baseline or benchmark: for each one of our indicators a benchmark against all agents/hosts is carried out and shown in difefrent tables. This flag is also configured as an alert condition that will trigger a notification (email, slack post in chat room, etc.) if a value = -1 is detected by Graylog. Processes where this flag = -1 could represent some type of malware running on the system. In this particular case, the column “columns_on_disk” is relevant since it represents a flag indicating if the process started up from disk. In this same tab detailed information on each process can also be found:
#Osquery packs update#
The search period can be easily extended as required and all values will update instantly. The first number indicates how many processes have been added or removed from the process table for the time period in the search (8 hours in this case). This view has several tabs, covering specific aspects of our audit (query pack).Īs an example, the screenshot below shows the content of the “PROCESSES AUDIT” tab where all system processes added to (or removed from) the process table can be analysed: On Graylog’s Enterprise/Views menu the link “Windows Audit by System name” can be found.įrom there, the first step is typing the hostname (windows short name or NetBIOS name) of the system we want to audit and check against our baseline: Systems Audit Integration in Centralised Log Management ¶
#Osquery packs windows#
Snapshot queries describe the state of a table at a specific point in time. Snapshot: Query results are not cached and each query will report the current state at the time of the query. Differential queries are ideal for understanding when an event has occurred and what changed.ĭifferential (ignore removals): Same as differential except that only additions to the table will be reported The default logging method for osquery is differential and results from these queries are written to. These logging types are:ĭifferential: Initial results are cached and future queries will only report changes since the last query. OSQUERY supports three different ways of logging events depending on the desired functionality. Resultant events are then logged to the filesystem. In a standard configuration, you provide osqueryd with a configuration file containing a list of queries together with a schedule. Osqueryd is the daemonized version of osqueryi, and is used for running scheduled queries. Any osquery table that ends with _events is an event-based table, for example file_events, hardware_events, and user_events. These tables ensure that events which occur between the defined query interval are collected in the table and purged based on a user-defined expiration option. Even then, short-lived processes might fall through the cracks.Įvent-based tables address this shortcoming by collecting and storing events in near real-time. For example, maintaining a list of running processes over time would require a user to schedule a query of the form SELECT * FROM processes at short intervals. This model makes it hard to monitor system properties continually. The contents of standard tables as described above are populated when a query executes against the table. Queries are issued either through osqueryi, an interactive SQL environment, or osqueryd, a long-lived daemon for execution of repeated, scheduled queries. Users can interrogate the system state with SQL queries against these tables. OSQUERY collects and aggregates a system’s log and status information in a collection of predefined tables.
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