Hi Christina! Sorry for the late response, got sidetracked and once deployed wanted to make sure the discussed was achieved. With your help I definitely see a different behavior, thanks also for clearing out that eventchannel is a requirement. I thought that might be the case, but got fooled by the error my config attempts resulted in ;) I thought I had tried most of the variants, but apparently that wasn't the case. Again, must appreciated! I will re-post when I see more of the filtered events forwarded!
Cheers, Fred On Friday, June 28, 2019 at 10:23:22 AM UTC+2, Cristina Garrido López wrote: > > Hi Fredrik, > > You are seeing every generated event because eventlog does not support > XPATH querying. In order to fix this, you should use eventchannel, but it > seems that your query isn't correctly formed as the error code returned is > 15001 > <https://docs.microsoft.com/en-us/windows/desktop/debug/system-error-codes--12000-15999-> > . > Keeping that in mind, I have been trying to monitor these EventIDs with > the same query as you pasted before. I have been able to see only these > events creating a custom view with this query at the Event Viewer. Please > try adding the next just in case you didn't use the right query or log > format. > > <localfile> > <location>Security</location> > <log_format>eventchannel</log_format> > <query>Event/System[EventID = 4624 or EventID = 4625 or EventID = > 4730 or EventID = 1102]</query> > </localfile> > > Let me know if you could solve this or not and I will try to find out what > could be happening. > Kind regards, > Cristina > > On Thursday, June 27, 2019 at 3:56:18 PM UTC+2, Fredrik wrote: >> >> Hi Jesus! >> >> >> Long time - and dated converation :) >> >> Ran into this again today as I wanted to query for multiple events on >> another host. First off, seems like I'm not able to use Eventchannel on >> this particular 2012r2 host (2019/06/27 15:30:57 ossec-logcollector: >> ERROR: Could not EvtSubscribe() for (Security) which returned (15001)). >> Switched back to Eventlog and used query below. It works, kind of ;) but >> also include other EventID (4798 being one example). >> >> >> - Any ideas as to why I see other EventIDs from the ones listed below? >> - I'm guessing I will have to write custom decoders for the eventID >> (below) that are sent from the agent as they seem different from for >> example a Snare agent? >> >> >> Anyway, mostly wanted to contribute to an old post if anyone end up >> reading it :) >> >> Best regards, >> Fredrik >> >> <localfile> >> <location>Security</location> >> <log_format>eventlog</log_format> >> <query>Event/System[EventID = 4624 or EventID = 4625 or EventID = >> 4730 or EventID = 1102]</query> >> </localfile> >> >> >> >> On Friday, November 4, 2016 at 9:37:37 AM UTC+1, Jesus Linares wrote: >>> >>> Hi Fredrik, >>> >>> according to the documentation you can use the Microsoft event schema >>> <https://msdn.microsoft.com/en-us/library/windows/desktop/aa385201(v=vs.85).aspx>. >>> >>> If you want to add multiple event IDs: >>> <localfile> >>> <location>Security</location> >>> <log_format>eventchannel</log_format> >>> <query>Event/System[EventID=5140 and EventID=5144]</query> >>> </localfile> >>> >>> Also, I think you can use other operators in the query (=, !=, <, >), so >>> it could be useful for you to define an interval: >>> <query>Event/System[EventID>xxxx and EventID<yyyy]</query> >>> >>> I've never used the "Level" query. is it not working?. >>> >>> Regards. >>> >>> On Wednesday, November 2, 2016 at 1:34:43 PM UTC+1, Fredrik wrote: >>>> >>>> Hi Santiago and others, >>>> >>>> >>>> Interesting thread (even if dated). I did something similar today and >>>> got an OSSEC agent to forward Windows Server Events according to below to >>>> the OSSEC server. I have some experience writing decoders to syslog event >>>> (but limited as you can see in this forum :)). How would I go about >>>> writing >>>> rules on the OSSEC server to handle the forwarded events? >>>> >>>> - Say I would like to group all Level 1 events and send them in a daily >>>> email? >>>> - How would I add mulitiple eventIDs to the below query? OSSEC and >>>> operand? Could you please provide example? >>>> >>>> ossec.conf >>>> >>>> <ossec_config> >>>> >>>> <!-- One entry for each file/Event log to monitor. >>>> <localfile> >>>> <location>Application</location> >>>> <log_format>eventchannel</log_format> >>>> </localfile> >>>> >>>> --> >>>> >>>> <localfile> >>>> <location>Security</location> >>>> <log_format>eventchannel</log_format> >>>> <query>Event/System[EventID=4740]</query> >>>> </localfile> >>>> >>>> <localfile> >>>> <location>System</location> >>>> <log_format>eventchannel</log_format> >>>> <query>Event/System[Level=2]</query> >>>> </localfile> >>>> >>>> The query for Level=2 generates alert below on OSSEC server when a test >>>> event was created using command below. >>>> >>>> eventcreate /t error /id 100 /l system /d "Create event in application >>>> log" >>>> >>>> alerts.log >>>> 2016 Nov 02 13:18:55 (win-testdc) 10.1.1.10->WinEvtLog >>>> 2016 Nov 02 13:19:24 WinEvtLog: System: ERROR(100): system: ADMIN: >>>> contoso: win-testdc.contoso.com: (no message) >>>> >>>> >>>> Best regards, >>>> Fredrik >>>> >>>> On Tuesday, August 18, 2015 at 9:20:43 PM UTC+2, Santiago Bassett wrote: >>>>> >>>>> I guess you want to remove these sections from the ossec.conf file in >>>>> the agent. Those are used to get all application, security and system >>>>> events. >>>>> >>>>> <localfile> >>>>> <location>Application</location> >>>>> <log_format>eventlog</log_format> >>>>> </localfile> >>>>> >>>>> <localfile> >>>>> <location>Security</location> >>>>> <log_format>eventlog</log_format> >>>>> </localfile> >>>>> >>>>> <localfile> >>>>> <location>System</location> >>>>> <log_format>eventlog</log_format> >>>>> </localfile> >>>>> >>>>> On Tue, Aug 18, 2015 at 12:13 PM, Ralph Durkee <ossec...@rd1.net> >>>>> wrote: >>>>> >>>>>> The shared agent is as previously shared, copied below for reference: >>>>>> >>>>>> <agent_config> >>>>>> <!-- Generic Agent configurations. --> >>>>>> >>>>>> <localfile> >>>>>> <location>Security</location> >>>>>> <log_format>eventchannel</log_format> >>>>>> <query>Event/System[EventID=4624]</query> >>>>>> </localfile> >>>>>> >>>>>> </agent_config> >>>>>> >>>>>> *The Windows OSSEC after the comments starts with *(middle portion >>>>>> removed, and has no localfile entries. ) >>>>>> >>>>>> >>>>>> <ossec_config> >>>>>> >>>>>> <!-- One entry for each file/Event log to monitor. --> >>>>>> <localfile> >>>>>> <location>Application</location> >>>>>> <log_format>eventlog</log_format> >>>>>> </localfile> >>>>>> >>>>>> <localfile> >>>>>> <location>Security</location> >>>>>> <log_format>eventlog</log_format> >>>>>> </localfile> >>>>>> >>>>>> <localfile> >>>>>> <location>System</location> >>>>>> <log_format>eventlog</log_format> >>>>>> </localfile> >>>>>> >>>>>> >>>>>> <!-- Rootcheck - Policy monitor config --> >>>>>> . . . SNIP . . . >>>>>> >>>>>> >>>>>> </ossec_config> >>>>>> >>>>>> >>>>>> <!-- END of Default Configuration. --> >>>>>> >>>>>> >>>>>> <ossec_config> >>>>>> <client> >>>>>> <server-hostname>xxx-ossec-srv1</server-hostname> >>>>>> </client> >>>>>> </ossec_config> >>>>>> >>>>>> -- Ralph Durkee >>>>>> >>>>>> On 08/18/2015 01:24 PM, Santiago Bassett wrote: >>>>>> >>>>>> Could you share your ossec.conf settings (from the agent) and also >>>>>> the shared/agent.conf ones. Those are probably located in C:\Program >>>>>> Files/ossec-agent >>>>>> >>>>>> I am guessing, but I think you probably are reading all Security >>>>>> events in some other place of the configuration (look for the different >>>>>> locations). >>>>>> >>>>>> Regards >>>>>> >>>>>> On Tue, Aug 18, 2015 at 10:17 AM, Ralph Durkee <ossec...@rd1.net> >>>>>> wrote: >>>>>> >>>>>>> Tried stopping and starting the agent service on the windows system. >>>>>>> Still getting other security events from that system such as 4672 and >>>>>>> 4634 >>>>>>> in addition to the 4624. Any other suggestions? >>>>>>> >>>>>>> -- Ralph Durkee >>>>>>> >>>>>>> >>>>>>> On 08/18/2015 01:10 PM, Ralph Durkee wrote: >>>>>>> >>>>>>> I've restarted ossec on the server several times. Are you refering >>>>>>> to the Windows agent? >>>>>>> >>>>>>> -- Ralph Durkee >>>>>>> >>>>>>> >>>>>>> On 08/18/2015 11:46 AM, Santiago Bassett wrote: >>>>>>> >>>>>>> Try restarting it manually and see if that works. >>>>>>> >>>>>>> On Tue, Aug 18, 2015 at 7:23 AM, Ralph Durkee <ossec...@rd1.net> >>>>>>> wrote: >>>>>>> >>>>>>>> I'm trying to filter Windows events based on strings such as the >>>>>>>> login type and workstation name, but as a starting point I tried the >>>>>>>> configuration below to filter on EventID 4624. The >>>>>>>> /var/ossec/etc/shared/agent.conf file contains: >>>>>>>> >>>>>>>> <agent_config> >>>>>>>> <!-- Generic Agent configurations. --> >>>>>>>> >>>>>>>> <localfile> >>>>>>>> <location>Security</location> >>>>>>>> <log_format>eventchannel</log_format> >>>>>>>> <query>Event/System[EventID=4624]</query> >>>>>>>> </localfile> >>>>>>>> >>>>>>>> </agent_config> >>>>>>>> >>>>>>>> However I continue receiving all security events including Security >>>>>>>> EventID 4624 and others. >>>>>>>> I restarted the windows system agent via agent_control -R and also >>>>>>>> restarted the OSSEC manager. >>>>>>>> I don't have any errors in ossec.log with regard to the >>>>>>>> shared/agent.conf file. >>>>>>>> >>>>>>>> Any suggestions on getting this working? >>>>>>>> >>>>>>>> Thanks, >>>>>>>> >>>>>>>> -- Ralph Durkee >>>>>>>> >>>>>>>> On 08/08/2015 01:32 PM, Santiago Bassett wrote: >>>>>>>> >>>>>>>> Hi, >>>>>>>> >>>>>>>> try using this configuration: >>>>>>>> >>>>>>>> <localfile> >>>>>>>> <location>Security</location> >>>>>>>> <log_format>eventchannel</log_format> >>>>>>>> <query>Event/System[EventID=4624]</query> >>>>>>>> </localfile> >>>>>>>> >>>>>>>> Best regards >>>>>>>> >>>>>>>> On Thu, Aug 6, 2015 at 3:18 AM, Swati <swat...@gmail.com> wrote: >>>>>>>> >>>>>>>>> Hi, >>>>>>>>> >>>>>>>>> I have installed the new version of OSSEC v2.8.2. I have a windows >>>>>>>>> ossec client. I would like to filter Windows event logs >>>>>>>>> (Applications/Security/System/Application and Services Log) based on >>>>>>>>> the >>>>>>>>> event ids at ossec client (in order to reduce the logs forwarded to >>>>>>>>> OSSEC >>>>>>>>> manager). >>>>>>>>> >>>>>>>>> I have amended the client ossec.conf with the example from the >>>>>>>>> OSSEC documentation. >>>>>>>>> >>>>>>>>> <localfile> >>>>>>>>> <location>System</location> >>>>>>>>> <log_format>eventchannel</log_format> >>>>>>>>> <query>Event/System[EventID=7001]</query> >>>>>>>>> </localfile> >>>>>>>>> * This WORKS * >>>>>>>>> <localfile> >>>>>>>>> <location>Security</location> >>>>>>>>> <log_format>eventchannel</log_format> >>>>>>>>> <query>Event/Security[EventID=4624]</query> >>>>>>>>> </localfile> >>>>>>>>> >>>>>>>>> >>>>>>>>> * THIS DOESN'T WORK. If I remove the query field it does work but >>>>>>>>> then it forwards all the logs coming out from Windows Security event >>>>>>>>> log. I >>>>>>>>> am getting similar issue when I try to filter based on "Applications >>>>>>>>> and >>>>>>>>> Services Logs". *If I try to give the whole path name in the >>>>>>>>> location. The ossec client does not start and I get an error "Could >>>>>>>>> not >>>>>>>>> create bookmark". >>>>>>>>> >>>>>>>>> Am I doing something wrong here. Please advice. >>>>>>>>> >>>>>>>>> Kind Regards >>>>>>>>> Swati >>>>>>>>> -- >>>>>>>>> >>>>>>>>> --- >>>>>>>>> You received this message because you are subscribed to the Google >>>>>>>>> Groups "ossec-list" group. >>>>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>>>> send an email to ossec-list+...@googlegroups.com. >>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>>>> >>>>>>>> --- >>>>>>>> You received this message because you are subscribed to the Google >>>>>>>> Groups "ossec-list" group. >>>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>>> send an email to ossec-list+...@googlegroups.com. >>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>>>> >>>>>>>> --- >>>>>>>> You received this message because you are subscribed to the Google >>>>>>>> Groups "ossec-list" group. >>>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>>> send an email to ossec-list+...@googlegroups.com. >>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>> >>>>>>> >>>>>>> -- >>>>>>> >>>>>>> --- >>>>>>> You received this message because you are subscribed to the Google >>>>>>> Groups "ossec-list" group. >>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>> send an email to ossec-list+...@googlegroups.com. >>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>> >>>>>>> >>>>>>> >>>>>>> -- >>>>>>> >>>>>>> --- >>>>>>> You received this message because you are subscribed to the Google >>>>>>> Groups "ossec-list" group. >>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>> send an email to ossec-list+...@googlegroups.com. >>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>> >>>>>> >>>>>> -- >>>>>> >>>>>> --- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "ossec-list" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>> send an email to ossec-list+...@googlegroups.com. >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>>> >>>>>> -- >>>>>> >>>>>> --- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "ossec-list" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>> send an email to ossec-list+...@googlegroups.com. >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>> >>>>> -- --- You received this message because you are subscribed to the Google Groups "ossec-list" group. 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