Persistence (TA0003)(external, opens in a new tab or window)
Credential Access (TA0006)(external, opens in a new tab or window)
Lateral Movement (TA0008)(external, opens in a new tab or window)
text code block:sequence by host.id with maxspan=1m [process where host.os.type == "linux" and event.action == "end" and process.name == "sshd" and process.exit_code != 0 and process.command_line == "/usr/sbin/sshd -D -R" and process.parent.command_line == "sshd: /usr/sbin/sshd -D [listener] 0 of 10-100 startups"] by process.entity_id [process where host.os.type == "linux" and event.type == "start" and event.action == "exec" and process.parent.name == "sshd" and process.parent.command_line == "/usr/sbin/sshd -D -R" and process.name in ("bash", "dash", "sh", "tcsh", "csh", "zsh", "ksh", "fish") and process.args == "-c" and not process.executable in ("/usr/sbin/sshd", "/sbin/unix_chkpwd") and not ( process.args like ("rsync*", "systemctl*", "/usr/sbin/unix_chkpwd", "/usr/bin/google_authorized_keys", "/usr/sbin/aad_certhandler*", "bash -c bash -s", "/usr/lib/ssh/sftp-server", "stat /etc/is_upgrade_install > /dev/null 2>&1", "stat /opt/qradar/ha/.*", "/usr/bin/env -i PATH=*", "/opt/gitlab/embedded/service/gitlab-shell/bin/gitlab-shell key*", "test -e /*", "md5sum*", "check_mk_agent") or process.command_line like ("sh -c /usr/bin/env -i PATH=*", "sh -c -- /usr/bin/env -i PATH=*", "*/root/.ansible/tmp/ansible-tmp*") )] by process.parent.entity_id
Install detection rules in Elastic Security
Detect Potential Execution via XZBackdoor in the Elastic Security detection engine by installing this rule into your Elastic Stack.
To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(external, opens in a new tab or window).