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More centrify changes.

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Add crlutil as a program that can modify below etc.

Let centrify programs modify below etc.

Add more info for writes below etc to track etc writers through scripts.

Increase the level of debugging for shells.
This commit is contained in:
Mark Stemm 2017-09-25 08:36:35 -07:00
parent 011cb2f030
commit c3c171c7e5
1 changed files with 5 additions and 3 deletions
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8
rules/falco_rules.yaml
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@ -451,7 +451,7 @@
debconf-show, rollerd, bind9.postinst, sv, debconf-show, rollerd, bind9.postinst, sv,
gen_resolvconf., update-ca-certi, certbot, runsv, gen_resolvconf., update-ca-certi, certbot, runsv,
qualys-cloud-ag, locales.postins, nomachine_binaries, qualys-cloud-ag, locales.postins, nomachine_binaries,
adclient, certutil) adclient, certutil, crlutil)
and not proc.pname in (sysdigcloud_binaries, sendmail_config_binaries, hddtemp.postins, sshkit_script_binaries) and not proc.pname in (sysdigcloud_binaries, sendmail_config_binaries, hddtemp.postins, sshkit_script_binaries)
and not fd.name pmatch (safe_etc_dirs) and not fd.name pmatch (safe_etc_dirs)
and not fd.name in (/etc/container_environment.sh, /etc/container_environment.json, /etc/motd, /etc/motd.svc) and not fd.name in (/etc/container_environment.sh, /etc/container_environment.json, /etc/motd, /etc/motd.svc)
@ -459,11 +459,12 @@
and not python_running_denyhosts and not python_running_denyhosts
and not fluentd_writing_conf_files and not fluentd_writing_conf_files
and not user_known_write_etc_conditions and not user_known_write_etc_conditions
and not run_by_centrify
- rule: Write below etc - rule: Write below etc
desc: an attempt to write to any file below /etc, not in a pipe installer session desc: an attempt to write to any file below /etc, not in a pipe installer session
condition: write_etc_common and not proc.sname=fbash condition: write_etc_common and not proc.sname=fbash
output: "File below /etc opened for writing (user=%user.name command=%proc.cmdline parent=%proc.pname file=%fd.name name=%proc.name)" output: "File below /etc opened for writing (user=%user.name command=%proc.cmdline parent=%proc.pname file=%fd.name name=%proc.name gparent=%proc.aname[2] ggparent=%proc.aname[3] gggparent=%proc.aname[4])"
priority: ERROR priority: ERROR
tags: [filesystem] tags: [filesystem]
@ -649,7 +650,8 @@
and not run_by_centrify and not run_by_centrify
output: > output: >
Shell spawned by untrusted binary (user=%user.name shell=%proc.name parent=%proc.pname Shell spawned by untrusted binary (user=%user.name shell=%proc.name parent=%proc.pname
cmdline=%proc.cmdline pcmdline=%proc.pcmdline gparent=%proc.aname[2] ggparent=%proc.aname[3]) cmdline=%proc.cmdline pcmdline=%proc.pcmdline gparent=%proc.aname[2] ggparent=%proc.aname[3]
gggparent=%proc.aname[4] ggggparent=%proc.aname[5])
priority: DEBUG priority: DEBUG
tags: [host, shell] tags: [host, shell]