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example_audit.rules
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example_audit.rules
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#
# This file contains the auditctl rules that are loaded
# whenever the audit daemon is started via the initscripts.
# The rules are simply the parameters that would be passed
# to auditctl.
# First rule - delete all previous rules.
-D
# Increase buffers to survive event spikes, without dropping events.
# You can make this bigger for busy systems.
# Value is x times an audit record size in kernel memory.
# Large value may use quite a few megs of kernel memory.
-b 32768
# Ignore errors (if file path doesn't exists, for example, don't stop processing rules).
-i
## Enable the kernel audit subsystem.
# 1 means the configuration can be modified.
# 2 means immutable until reboot (only set 2 at the *end* of the rule file - else you'll shoot yourself in the foot)
-e 1
# Rate limit audit at the kernel level (msg/s)
-r 1000
## Generic logging
# Log calls that may bypass normal syscalls calls
-a always,exit -F arch=b64 -S personality -k bypass
-a always,exit -F arch=b32 -S personality -k bypass
## Exec logging
# We're first excluding quite a few binaries from exec logging.
# These are called often and do not provide significant value.
-A exit,never -F dir=/usr/lib/nagios/plugins -F perm=x
-A exit,never -F dir=/usr/lib64/nagios/plugins -F perm=x
-A exit,never -F path=/opt/compaq/utils/usb-device.sh -F perm=x
-A exit,never -F path=/opt/hp/hp-snmp-agents/utils/usb-device.sh -F perm=x
-A exit,never -F path=/bin/grep -F perm=x
-A exit,never -F path=/bin/egrep -F perm=x
-A exit,never -F path=/bin/less -F perm=x
-A exit,never -F path=/usr/bin/lesspipe.sh -F perm=x
-A exit,never -F path=/usr/bin/tail -F perm=x
-A exit,never -F path=/sbin/consoletype -F perm=x
-A exit,never -F path=/bin/stty -F perm=x
-A exit,never -F path=/usr/bin/tty -F perm=x
-A exit,never -F path=/bin/tput -F perm=x
-A exit,never -F path=/usr/bin/file -F perm=x
-A exit,never -F path=/bin/basename -F perm=x
-A exit,never -F path=/usr/bin/which -F perm=x
-A exit,never -F path=/usr/bin/wc -F perm=x
-A exit,never -F path=/usr/bin/gmetric -F perm=x
-A exit,never -F path=/usr/bin/sed -F perm=x
-A exit,never -F path=/bin/sed -F perm=x
-A exit,never -F path=/bin/sleep -F perm=x
-A exit,never -F path=/bin/cut -F perm=x
# as we're getting the fork'd exec logged, so such programs as env are ok to exclude
-A exit,never -F path=/bin/env -F perm=x
# Setup the exec monitoring for all other cases
-a exit,always -F arch=b64 -S execve -k exec
-a exit,always -F arch=b32 -S execve -k exec
## Log changes to system configuration files.
# Modify audit configuration
-w /etc/audit/ -p wa -k audit
-w /etc/audisp/ -p wa -k audit
-w /etc/sysconfig/auditd -p wa -k audit
-w /etc/libaudit.conf -p wa -k audit
# Modify logging configuration
-w /etc/rsyslog.conf -p wa -k syslog
-w /etc/rsyslog-ng/ -p wa -k syslog
-w /etc/syslog.conf -p wa -k syslog
-w /etc/syslog-ng.conf -p wa -k syslog
-w /etc/syslog-ng/ -p wa -k syslog
w /etc/fluent/ -p wa -k syslog
# Modify cron
-w /etc/cron.allow -p wa -k cron
-w /etc/cron.deny -p wa -k cron
-w /etc/cron.d/ -p wa -k cron
-w /etc/cron.daily/ -p wa -k cron
-w /etc/cron.hourly/ -p wa -k cron
-w /etc/cron.monthly/ -p wa -k cron
-w /etc/cron.weekly/ -p wa -k cron
-w /etc/crontab -p wa -k cron
-w /var/spool/cron/root -p wa -k cron
-w /var/spool/atspool
-w /etc/at.allow
-w /etc/at.deny
# Modify startup
-w /etc/rc.d/init.d/ -p wa -k init
-w /sbin/init -p wa -k init
-w /etc/inittab -p wa -k init
-w /etc/systemd/ -p wa -k init
-w /etc/init.d/ -p wa -k init
# Modify PAM
-w /etc/pam.d -p wa -k pam
-w /etc/security/ -p wa -k pam
-w /lib/security/ -p wa -k pam
# Modify sudoers
-w /etc/sudoers -p wa -k user
# Modify SSHD
-w /etc/sshd/ -p wa -k sshd
# Users
-w /etc/group -p wa -k user
-w /etc/passwd -p wa -k user
-w /etc/gshadow -p wa -k user
-w /etc/shadow -p wa -k user
-w /etc/security/opasswd -p wa -k user
-w /etc/sudoers -p wa -k user
# Time changes
-a always,exit -F arch=b32 -S adjtimex -S settimeofday -k time-change
-a always,exit -F arch=b64 -S adjtimex -S settimeofday -k time-change
-w /etc/localtime -p wa -k time-change
# Module loading
-a exit,always -F arch=b64 -S init_module -k module
-a exit,always -F arch=b32 -S init_module -k module
# Swapping kernel via kexec
-a exit,always -F arch=b64 -S kexec_load -k kexec
-a exit,always -F arch=b32 -S kexec_load -k kexec
# Attaching to processes
-a exit,always -F arch=b64 -S ptrace -k trace
-a exit,always -F arch=b32 -S ptrace -k trace
# Changes to binaries (common locations)
-w /usr/bin/ -p wa -k binaries
-w /bin/ -p wa -k binaries
-w /usr/sbin/ -p wa -k binaries
-w /sbin/ -p wa -k binaries
-w /usr/local/bin/ -p wa -k binaries
-w /usr/local/sbin/ -p wa -k binaries
# Changes to libraries (common locations)
-w /lib/ -p wa -k binaries
-w /lib32/ -p wa -k binaries
-w /lib64/ -p wa -k binaries
-w /usr/lib/ -p wa -k binaries
-w /usr/lib32/ -p wa -k binaries
-w /usr/lib64/ -p wa -k binaries
-w /usr/local/lib/ -p wa -k binaries
-w /usr/local/lib32/ -p wa -k binaries
-w /usr/local/lib64/ -p wa -k binaries
-w /usr/libexec/ -p wa -k binaries
-w /usr/local/libexec/ -p wa -k binaries
# Important system files
-w /etc/sysctl.conf -p wa -k binaries
-w /etc/modprobe.conf
-w /etc/modprobe.conf.local
-w /etc/modprobe.d/ -p wa -k binaries
-w /etc/modules-load.d/ -p wa -k binaries
# Kernel modules
-w /lib/modules/ -p wa -k binaries
# Libc preload and linking configuration
-w /etc/ld.so.conf -p wa -k binaries
-w /etc/ld.so.conf.d -p wa -k binaries
-w /etc/ld.so.preload -p wa -k binaries
# System-wide shell profiles
# AF_SECURITY
-a exit,always -F arch=b64 -S socket -F a0=14 -k net
# AF_KEY
-a exit,always -F arch=b64 -S socket -F a0=15 -k net
# AF_NETLINK
-a exit,always -F arch=b64 -S socket -F a0=16 -k net
# AF_PACKET
-a exit,always -F arch=b64 -S socket -F a0=17 -k net
# AF_LLC
-a exit,always -F arch=b64 -S socket -F a0=26 -k net
# AF_XDP
-a exit,always -F arch=b64 -S socket -F a0=44 -k net
# AF_INET + SOCK_RAW
-a exit,always -F arch=b64 -S socket -F a1=3 -k net
-a exit,always -F arch=b64 -S listen -k net
# uncomment to temporarily disable auditd
#-D