sequence by host.id, process.entity_id with maxspan=1s
[process where host.os.type == "linux" and event.type == "start" and event.action == "exec" and (
(process.parent.executable == "/usr/bin/xfce4-session") or
(process.executable == "/bin/sh" and process.args == "-e" and process.args == "-u" and
process.args == "-c" and process.args : "export GIO_LAUNCHED_DESKTOP_FILE_PID=$$;*")
)
]
[network where host.os.type == "linux" and event.type == "start" and event.action == "connection_attempted" and not (
destination.ip == null or destination.ip == "0.0.0.0" or cidrmatch(
destination.ip, "10.0.0.0/8", "127.0.0.0/8", "169.254.0.0/16", "172.16.0.0/12", "192.0.0.0/24", "192.0.0.0/29",
"192.0.0.8/32", "192.0.0.9/32", "192.0.0.10/32", "192.0.0.170/32", "192.0.0.171/32", "192.0.2.0/24",
"192.31.196.0/24", "192.52.193.0/24", "192.168.0.0/16", "192.88.99.0/24", "224.0.0.0/4", "100.64.0.0/10",
"192.175.48.0/24","198.18.0.0/15", "198.51.100.0/24", "203.0.113.0/24", "240.0.0.0/4", "::1", "FE80::/10",
"FF00::/8", "172.31.0.0/16"
) or
process.name in (
"telegram-desktop", "firefox", "gnome-calculator", "remmina", "spotify", "librewolf", "fortitraylauncher",
"flameshot", "thunderbird", "update-manager", "warp-terminal", "obs", "transmission-gtk"
)
)
]
Install detection rules in Elastic Security
Detect Network Connections Initiated Through XDG Autostart Entry 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(opens in a new tab or window).