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(cherry picked from commit f69b501) Co-authored-by: Tiago Queiroz <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,172 @@ | ||
| description: Common steps for Journald and log files from system/auth Filebeat module | ||
| processors: | ||
| - grok: | ||
| description: Grok usernames from PAM messages. | ||
| tag: grok-pam-users | ||
| field: message | ||
| ignore_missing: true | ||
| ignore_failure: true | ||
| patterns: | ||
| - 'for user %{QUOTE}?%{DATA:_temp.foruser}%{QUOTE}? by %{QUOTE}?%{DATA:_temp.byuser}%{QUOTE}?(?:\(uid=%{NUMBER:_temp.byuid}\))?$' | ||
| - 'for user %{QUOTE}?%{DATA:_temp.foruser}%{QUOTE}?$' | ||
| - 'by user %{QUOTE}?%{DATA:_temp.byuser}%{QUOTE}?$' | ||
| - '%{BOUNDARY} user %{QUOTE}%{DATA:_temp.user}%{QUOTE}' | ||
| pattern_definitions: | ||
| QUOTE: "['\"]" | ||
| BOUNDARY: "(?<! )" | ||
| if: ctx.message != null && ctx.message != "" | ||
| - rename: | ||
| field: _temp.byuser | ||
| target_field: user.name | ||
| ignore_missing: true | ||
| ignore_failure: true | ||
| - rename: | ||
| field: _temp.byuid | ||
| target_field: user.id | ||
| ignore_missing: true | ||
| ignore_failure: true | ||
| - rename: | ||
| field: _temp.foruser | ||
| target_field: user.name | ||
| ignore_missing: true | ||
| ignore_failure: true | ||
| if: ctx.user?.name == null || ctx.user?.name == "" | ||
| - rename: | ||
| field: _temp.user | ||
| target_field: user.name | ||
| ignore_missing: true | ||
| ignore_failure: true | ||
| if: ctx.user?.name == null || ctx.user?.name == "" | ||
| - rename: | ||
| field: _temp.foruser | ||
| target_field: user.effective.name | ||
| ignore_missing: true | ||
| ignore_failure: true | ||
| if: ctx.user?.name != null | ||
| - remove: | ||
| field: _temp | ||
| ignore_missing: true | ||
| - convert: | ||
| field: source.address | ||
| target_field: source.ip | ||
| type: ip | ||
| ignore_missing: true | ||
| on_failure: | ||
| - set: | ||
| field: source.domain | ||
| copy_from: source.address | ||
| ignore_failure: true | ||
| - convert: | ||
| field: system.auth.sudo.user | ||
| target_field: user.effective.name | ||
| type: string | ||
| ignore_failure: true | ||
| if: ctx.system?.auth?.sudo?.user != null | ||
| - convert: | ||
| field: system.auth.ssh.dropped_ip | ||
| target_field: source.ip | ||
| type: ip | ||
| ignore_missing: true | ||
| on_failure: | ||
| - remove: | ||
| field: system.auth.ssh.dropped_ip | ||
| - geoip: | ||
| field: source.ip | ||
| target_field: source.geo | ||
| ignore_missing: true | ||
| - geoip: | ||
| database_file: GeoLite2-ASN.mmdb | ||
| field: source.ip | ||
| target_field: source.as | ||
| properties: | ||
| - asn | ||
| - organization_name | ||
| ignore_missing: true | ||
| - rename: | ||
| field: source.as.asn | ||
| target_field: source.as.number | ||
| ignore_missing: true | ||
| - rename: | ||
| field: source.as.organization_name | ||
| target_field: source.as.organization.name | ||
| ignore_missing: true | ||
| - set: | ||
| field: event.kind | ||
| value: event | ||
| - script: | ||
| description: Add event.category/action/output to SSH events. | ||
| tag: script-categorize-ssh-event | ||
| if: ctx.system?.auth?.ssh?.event != null | ||
| lang: painless | ||
| source: >- | ||
| if (ctx.system.auth.ssh.event == "Accepted") { | ||
| ctx.event.type = ["info"]; | ||
| ctx.event.category = ["authentication", "session"]; | ||
| ctx.event.action = "ssh_login"; | ||
| ctx.event.outcome = "success"; | ||
| } else if (ctx.system.auth.ssh.event == "Invalid" || ctx.system.auth.ssh.event == "Failed") { | ||
| ctx.event.type = ["info"]; | ||
| ctx.event.category = ["authentication"]; | ||
| ctx.event.action = "ssh_login"; | ||
| ctx.event.outcome = "failure"; | ||
| } | ||
| - append: | ||
| field: event.category | ||
| value: iam | ||
| if: ctx.process?.name != null && ['groupadd', 'groupdel', 'groupmod', 'useradd', 'userdel', 'usermod'].contains(ctx.process.name) | ||
| - set: | ||
| field: event.outcome | ||
| value: success | ||
| if: ctx.process?.name != null && (ctx.message == null || !ctx.message.contains("fail")) && ['groupadd', 'groupdel', 'groupmod', 'useradd', 'userdel', 'usermod'].contains(ctx.process.name) | ||
| - set: | ||
| field: event.outcome | ||
| value: failure | ||
| if: ctx.process?.name != null && (ctx.message != null && ctx.message.contains("fail")) && ['groupadd', 'groupdel', 'groupmod', 'useradd', 'userdel', 'usermod'].contains(ctx.process.name) | ||
| - append: | ||
| field: event.type | ||
| value: user | ||
| if: ctx.process?.name != null && ['useradd', 'userdel', 'usermod'].contains(ctx.process.name) | ||
| - append: | ||
| field: event.type | ||
| value: group | ||
| if: ctx.process?.name != null && ['groupadd', 'groupdel', 'groupmod'].contains(ctx.process.name) | ||
| - append: | ||
| field: event.type | ||
| value: creation | ||
| if: ctx.process?.name != null && ['useradd', 'groupadd'].contains(ctx.process.name) | ||
| - append: | ||
| field: event.type | ||
| value: deletion | ||
| if: ctx.process?.name != null && ['userdel', 'groupdel'].contains(ctx.process.name) | ||
| - append: | ||
| field: event.type | ||
| value: change | ||
| if: ctx.process?.name != null && ['usermod', 'groupmod'].contains(ctx.process.name) | ||
| - append: | ||
| field: related.user | ||
| value: "{{{ user.name }}}" | ||
| allow_duplicates: false | ||
| if: ctx.user?.name != null && ctx.user?.name != '' | ||
| - append: | ||
| field: related.user | ||
| value: "{{{ user.effective.name }}}" | ||
| allow_duplicates: false | ||
| if: ctx.user?.effective?.name != null && ctx.user?.effective?.name != '' | ||
| - append: | ||
| field: related.ip | ||
| value: "{{{ source.ip }}}" | ||
| allow_duplicates: false | ||
| if: ctx.source?.ip != null && ctx.source?.ip != '' | ||
| - append: | ||
| field: related.hosts | ||
| value: "{{{ host.hostname }}}" | ||
| allow_duplicates: false | ||
| if: ctx.host?.hostname != null && ctx.host?.hostname != '' | ||
| - set: | ||
| field: ecs.version | ||
| value: 8.0.0 | ||
| - remove: | ||
| field: event.original | ||
| if: "ctx?.tags == null || !(ctx.tags.contains('preserve_original_event'))" | ||
| ignore_failure: true | ||
| ignore_missing: true |
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