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Nice windows event blacklisting
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[WinEventLog://Security] | |
disabled = 0 | |
start_from = oldest | |
current_only = 0 | |
evt_resolve_ad_obj = 1 | |
checkpointInterval = 5 | |
blacklist1 = EventCode="4662" Message="Object Type:(?!\s*groupPolicyContainer)" | |
blacklist2 = EventCode="566" Message="Object Type:(?!\s*groupPolicyContainer)" | |
blacklist3 = EventCode="4688" Message="New Process Name:\s*(?i)(?:[C-F]:\\Program Files\\Splunk(?:UniversalForwarder)?\\bin\\(?:btool|splunkd|splunk|splunk\-(?:MonitorNoHandle|admon|netmon|perfmon|powershell|regmon|winevtlog|winhostinfo|winprintmon|wmi|optimize))\.exe)" | |
blacklist4 = EventCode="4689" Message="Process Name:\s*(?i)(?:[C-F]:\\Program Files\\Splunk(?:UniversalForwarder)?\\bin\\(?:btool|splunkd|splunk|splunk\-(?:MonitorNoHandle|admon|netmon|perfmon|powershell|regmon|winevtlog|winhostinfo|winprintmon|wmi|optimize))\.exe)" |
I wanted to ask where you are filtering the powershell wouldn't you want to leave that in case someone tried to run scripts via powershell?
I wanted to ask where you are filtering the powershell wouldn't you want to leave that in case someone tried to run scripts via powershell?
This is blacklisting events for powershell that is run from the path "[C-F]:\Program Files\SplunkUniversalForwarder\bin" which would be scripts run by Splunk UF.
edit: changed drive letter to match regex C-F
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Since splunk is limited to 10 blacklists for Windows TA here is how I consolidated a few lines...
blacklist1 = EventCode="(4662|566)" Message="Object Type:(?!\s*groupPolicyContainer)"
blacklist2 = EventCode="(4656|4670|4663|4703|4658|4688)" Message="Account Name:(\W+\w+$)"
blacklist3 = EventCode="4624" Message="An account was successfully logged on"
blacklist4 = EventCode="(4688|4689)" Message="%SplunkUniversalForwarder%"
blacklist5 = EventCode="6278" Message="Network Policy Server granted full access to a user because the host met the defined health policy."