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audit.rules
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## First rule - delete all
-D
## Increase the buffers to survive stress events.
## Make this bigger for busy systems
-b 8192
## This determine how long to wait in burst of events
--backlog_wait_time 60000
## Set failure mode to syslog
-f 1
## Wazuh CIS recomendations
#
# Ensure events that modify date and time information are collected.
-a always,exit -F arch=b64 -S adjtimex -S settimeofday -k time-change
-a always,exit -F arch=b32 -S adjtimex -S settimeofday -S stime -k time-change
-a always,exit -F arch=b64 -S clock_settime -k time-change -a always,exit -F arch=b32 -S clock_settime -k time-change
-w /etc/localtime -p wa -k time-change
# Ensure events that modify user/group information are collected.
-w /etc/group -p wa -k identity
-w /etc/passwd -p wa -k identity
-w /etc/gshadow -p wa -k identity
-w /etc/shadow -p wa -k identity
-w /etc/security/opasswd -p wa -k identity
# Ensure events that modify the system's network environment are collected.
-a always,exit -F arch=b64 -S sethostname -S setdomainname -k system-locale
-a always,exit -F arch=b32 -S sethostname -S setdomainname -k system-locale
-w /etc/issue -p wa -k system-locale -w /etc/issue.net -p wa -k system-locale
-w /etc/hosts -p wa -k system-locale -w /etc/network -p wa -k system-locale
# Ensure events that modify the system's Mandatory Access Controls are collected.
-w /etc/apparmor/ -p wa -k MAC-policy
-w /etc/apparmor.d/ -p wa -k MAC-policy
# Ensure login and logout events are collected.
-w /var/log/faillog -p wa -k logins
-w /var/log/lastlog -p wa -k logins
-w /var/log/tallylog -p wa -k logins
# Ensure session initiation information is collected.
-w /var/run/utmp -p wa -k session
-w /var/log/wtmp -p wa -k logins
-w /var/log/btmp -p wa -k logins
# Ensure discretionary access control permission modification events are collected.
-a always,exit -F arch=b64 -S chmod -S fchmod -S fchmodat -F auid>=1000 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b32 -S chmod -S fchmod -S fchmodat -F auid>=1000 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b64 -S chown -S fchown -S fchownat -S lchown -F auid>=1000 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b32 -S chown -S fchown -S fchownat -S lchown -F auid>=1000 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b64 -S setxattr -S lsetxattr -S fsetxattr -S removexattr -S lremovexattr -S fremovexattr -F auid>=1000 -F auid!=4294967295 -k perm_mod
-a always,exit -F arch=b32 -S setxattr -S lsetxattr -S fsetxattr -S removexattr -S lremovexattr -S fremovexattr -F auid>=1000 -F auid!=4294967295 -k perm_mod
# Ensure unsuccessful unauthorized file access attempts are collected.
-a always,exit -F arch=b64 -S creat -S open -S openat -S truncate -S ftruncate -F exit=-EACCES -F auid>=1000 -F auid!=4294967295 -k access
-a always,exit -F arch=b32 -S creat -S open -S openat -S truncate -S ftruncate -F exit=-EACCES -F auid>=1000 -F auid!=4294967295 -k access
-a always,exit -F arch=b64 -S creat -S open -S openat -S truncate -S ftruncate -F exit=-EPERM -F auid>=1000 -F auid!=4294967295 -k access
-a always,exit -F arch=b32 -S creat -S open -S openat -S truncate -S ftruncate -F exit=-EPERM -F auid>=1000 -F auid!=4294967295 -k access
# Ensure successful file system mounts are collected.
-a always,exit -F arch=b64 -S mount -F auid>=1000 -F auid!=4294967295 -k mounts
-a always,exit -F arch=b32 -S mount -F auid>=1000 -F auid!=4294967295 -k mounts
# Ensure file deletion events by users are collected.
-a always,exit -F arch=b64 -S unlink -S unlinkat -S rename -S renameat -F auid>=1000 -F auid!=4294967295 -k delete
-a always,exit -F arch=b32 -S unlink -S unlinkat -S rename -S renameat -F auid>=1000 -F auid!=4294967295 -k delete
# Ensure changes to system administration scope (sudoers) is collected.
-w /etc/sudoers -p wa -k scope
-w /etc/sudoers.d/ -p wa -k scope
# Ensure system administrator command executions (sudo) are collected.
-a always,exit -F arch=b64 -C euid!=uid -F euid=0 -F auid>=1000 -F auid!=4294967295 -S execve -k actions
-a always,exit -F arch=b32 -C euid!=uid -F euid=0 -F auid>=1000 -F auid!=4294967295 -S execve -k actions
# Ensure kernel module loading and unloading is collected.
-w /sbin/insmod -p x -k modules
-w /sbin/rmmod -p x -k modules
-w /sbin/modprobe -p x -k modules
-a always,exit -F arch=b64 -S init_module -S delete_module -k modules
#Ensure system administrator command executions (sudo) are collected
-a always,exit -F arch=b64 -C euid!=uid -F euid=0 -F auid>=1000 -F auid!=4294967295 -S execve -k actions
-a always,exit -F arch=b32 -C euid!=uid -F euid=0 -F auid>=1000 -F auid!=4294967295 -S execve -k actions