diff --git a/rules/linux/lnx_clear_syslog.yml b/rules/linux/lnx_clear_syslog.yml new file mode 100644 index 000000000..4ca3a5a26 --- /dev/null +++ b/rules/linux/lnx_clear_syslog.yml @@ -0,0 +1,27 @@ +title: Clearing syslog +id: e09eb557-96d2-4de9-ba2d-30f712a5afd3 +status: experimental +description: Detects removal of the syslog +author: Max Altgelt +date: 2021/09/10 +references: + - https://www.virustotal.com/gui/file/fc614fb4bda24ae8ca2c44e812d12c0fab6dd7a097472a35dd12ded053ab8474 +logsource: + product: linux +detection: + selection: + - 'rm /var/log/syslog' + - 'rm -r /var/log/syslog' + - 'rm -f /var/log/syslog' + - 'rm -rf /var/log/syslog' + - 'mv /var/log/syslog' + - ' >/var/log/syslog' + - ' > /var/log/syslog' + falsepositives: + - '/syslog.' + condition: selection and not falsepositives +falsepositives: + - Log rotation +level: high +tags: + - attack.persistence