Elastic high stable eql
Potential Reverse Shell Activity via Terminal
Identifies the execution of a shell process with suspicious arguments which may be indicative of reverse shell activity.
Detection Logic
process where event.type in ("start", "process_started") and
process.name in ("sh", "bash", "zsh", "dash", "zmodload") and
process.args : ("*/dev/tcp/*", "*/dev/udp/*", "*zsh/net/tcp*", "*zsh/net/udp*") and
/* noisy FPs */
not (process.parent.name : "timeout" and process.executable : "/var/lib/docker/overlay*") and
not process.command_line : (
"*/dev/tcp/sirh_db/*", "*/dev/tcp/remoteiot.com/*", "*dev/tcp/elk.stag.one/*", "*dev/tcp/kafka/*",
"*/dev/tcp/$0/$1*", "*/dev/tcp/127.*", "*/dev/udp/127.*", "*/dev/tcp/localhost/*", "*/dev/tcp/itom-vault/*") and
not process.parent.command_line : "runc init" Field Validations
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