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Windows Event Clean Up in Splunk
#Returns most of the space savings XML would provide
SEDCMD-clean0-null_sids = s/(?m)(^\s+[^:]+\:)\s+-?$/\1/g s/(?m)(^\s+[^:]+\:)\s+-?$/\1/g s/(?m)(\:)(\s+NULL SID)$/\1/g s/(?m)(ID\:)(\s+0x0)$/\1/g
SEDCMD-clean1-summary = s/This event is generated[\S\s\r\n]+$//g
SEDCMD-clean2-cert_summary = s/Certificate information is only[\S\s\r\n]+$//g
SEDCMD-clean3-blank_ipv6 = s/::ffff://g
SEDCMD-clean4-token_elevation_summary = s/Token Elevation Type indicates[\S\s\r\n]+$//g
SEDCMD-clean5-network_share_summary = s/(?ms)(A network share object was checked to see whether.*$)//g
SEDCMD-clean6-authentication_summary = s/(?ms)(The computer attempted to validate the credentials.*$)//g
SEDCMD-clean7-local_ipv6 = s/(?ms)(::1)//g
# Removed due to issue with Windows Filtering Platform events
# SEDCMD-clean8-firewall_summary = s/(?ms)(The Windows Filtering Platform has permitted.*$)//g

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@automine automine commented Jul 31, 2018

Note: if you use the AD Objects app, it has some extractions (namely EXTRACT-ms_ad_obj_user and EXTRACT-4624-user which are a little over aggressive. When you combine them with the SEDCMD-clean0-null_sids above, you may get some extractions of user=Account Domain: as well as some other weirdness. You may want to look at adjusting those extractions. Thanks to mpf on the Splunk User Groups Slack for finding this.

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