115 lines
3.1 KiB
SQL
115 lines
3.1 KiB
SQL
-- Currently running program with Linux red flags
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--
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-- reference:
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-- * https://github.com/timb-machine/linux-malware/blob/725aad34e216cc024c93b04964b289f10f819e6e/defensive/yara/personal-malware-bazaar/unixredflags3.yara
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--
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-- tags: persistent
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-- interval: 7200
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-- platform: linux
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SELECT
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yara.strings,
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-- Child
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p0.pid AS p0_pid,
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p0.path AS p0_path,
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p0.name AS p0_name,
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p0.start_time AS p0_start,
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p0.cmdline AS p0_cmd,
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p0.cwd AS p0_cwd,
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p0.cgroup_path AS p0_cgroup,
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p0.euid AS p0_euid,
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p0_hash.sha256 AS p0_sha256,
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-- Parent
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p0.parent AS p1_pid,
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p1.path AS p1_path,
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p1.name AS p1_name,
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p1.start_time AS p1_start,
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p1.euid AS p1_euid,
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p1.cmdline AS p1_cmd,
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p1_hash.sha256 AS p1_sha256,
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-- Grandparent
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p1.parent AS p2_pid,
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p2.name AS p2_name,
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p2.start_time AS p2_start,
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p2.path AS p2_path,
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p2.cmdline AS p2_cmd,
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p2_hash.sha256 AS p2_sha256
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FROM
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processes p0
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JOIN yara ON p0.path = yara.path
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LEFT JOIN hash p0_hash ON p0.path = p0_hash.path
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LEFT JOIN processes p1 ON p0.parent = p1.pid
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LEFT JOIN hash p1_hash ON p1.path = p1_hash.path
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LEFT JOIN processes p2 ON p1.parent = p2.pid
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LEFT JOIN hash p2_hash ON p2.path = p2_hash.path
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WHERE
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p0.start_time > (strftime('%s', 'now') - 7200)
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AND
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yara.sigrule = '
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rule redflags {
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strings:
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$bash_history = ".bash_history"
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$google_chrome = "google-chrome"
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$cron = "cron"
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$dev_shm = "/dev/shm"
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$dev_tcp = "/dev/tcp"
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$dev_udp = "/dev/udp"
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$iptables = "iptables"
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$ld_so = "ld.so.conf"
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$proc = "/proc"
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$sudo = "sudo"
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$systemctl = "systemctl"
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$useradd = "useradd"
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$var_tmp = "/var/tmp"
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$var_run = "/var/run"
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$dev_mqueue = "/dev/mqueue"
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$bin_sh = "/bin/sh"
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$pickup = "pickup -l"
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$avahi = "avahi-daemon:"
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$redhat4 = "Red Hat 4"
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condition:
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filesize < 10MB and 2 of them
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}'
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AND yara.count > 0
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AND p0.name NOT IN (
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'chrome_crashpad',
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'X',
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'systemd',
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'NetworkManager',
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'systemd-journal',
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'Xorg',
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'slirp4netns',
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'nacl_helper'
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)
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AND p0.path NOT LIKE '%/google/chrome/%'
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AND p0.path NOT LIKE '%/chrome_crashpad_handler'
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AND p0.path NOT LIKE '/nix/store/%/bin/%'
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AND p0.path NOT LIKE '/nix/store/%/libexec/%'
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AND p0.path NOT IN (
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'/usr/bin/bash',
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'/usr/bin/gnome-software',
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'/usr/bin/gpg-agent',
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'/usr/bin/ibus-daemon',
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'/usr/bin/NetworkManager',
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'/usr/bin/nvidia-persistenced',
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'/usr/bin/pulseaudio',
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'/usr/bin/udevadm',
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'/usr/bin/update-notifier',
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'/usr/bin/Xwayland',
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'/usr/lib/bluetooth/bluetoothd',
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'/usr/lib/bluetooth/obexd',
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'/usr/lib/systemd/systemd-journald',
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'/usr/lib/systemd/systemd',
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'/usr/libexec/accounts-daemon',
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'/usr/libexec/bluetooth/bluetoothd',
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'/usr/libexec/bluetooth/obexd',
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'/usr/libexec/sssd/sssd_kcm',
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'/usr/libexec/xdg-desktop-portal',
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'/usr/sbin/acpid',
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'/usr/sbin/auditd',
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'/usr/sbin/cron',
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'/usr/sbin/gssproxy',
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'/usr/sbin/mcelog',
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'/usr/sbin/NetworkManager',
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'/usr/sbin/rsyslogd',
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'/usr/sbin/smartd'
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) |