Execution (TA0002)(external, opens in a new tab or window)
Command and Control (TA0011)(external, opens in a new tab or window)
text code block:process where host.os.type == "linux" and event.type == "start" and event.action == "exec" and process.interactive == true and process.parent.executable != null and ( ( process.executable like ("/bin/perl*", "/usr/bin/perl*", "/usr/local/bin/perl*") and process.args == "-e" and process.args like~ ( "*system(*", "*exec(*", "*IO.popen(*", "*Open3.popen3(*", "*spawn(*", "*eval(*", "*load(*IO::*", "*load(*Marshal*", "*load(*Fiddle*", "*load(*Zlib*", "*load(*Base64*", "*zlib.inflate(*", "*zlib.deflate(*", "*zlib.decompress(*", "*zlib.uncompress(*", "*zlib.compress(*", "*Marshal.load(*", "*Fiddle.dlopen(*", "*Fiddle::Function.new(*", "*base64*", "*zlib*", "*net/http*", "*socket.new*", "*open-uri*", "*pack(*" ) ) or process.executable like ("/bin/php*", "/usr/bin/php*", "/usr/local/bin/php*") and process.args == "-r" and process.args like~ ( "*exec(*", "*system(*", "*shell_exec(*", "*passthru(*", "*proc_open(*", "*pcntl_exec(*", "*popen(*", "*eval(*", "*assert(*", "*create_function(*", "*preg_replace(*e*", "*include(*", "*require(*", "*base64_decode(*", "*gzinflate(*", "*gzuncompress(*", "*str_rot13(*", "*urldecode(*", "*chr(*", "*ord(*", "*strrev(*", "*strtr(*", "*pack(*", "*unpack(*", "*curl_exec(*", "*curl_multi_exec(*", "*file_get_contents(*", "*fopen(*", "*fsockopen(*", "*pfsockopen(*", "*stream_socket_client(*", "*socket_create(*", "*socket_connect(*", "*socket_write(*", "*socket_read(*", "*mail(*", "*move_uploaded_file(*" ) or process.executable like ("/bin/lua*", "/usr/bin/lua*", "/usr/local/bin/lua*") and process.args == "-e" and process.args like~ ( "*os.execute(*", "*io.popen(*", "*load(*", "*loadstring(*", "*require(*", "*dofile(*", "*package.loadlib(*", "*base64.decode(*", "*base64.encode(*", "*zlib.inflate(*", "*zlib.deflate(*", "*zlib.decompress(*", "*zlib.compress(*", "*socket.bind(*", "*socket.connect(*", "*socket.receive(*", "*socket.send(*", "*socket.tcp(*", "*socket.udp(*", "*socket.listen(*", "*socket.accept(*", "*net.http.request(*", "*net.http.get(*", "*net.http.post(*", "*http.request(*", "*http.get(*", "*http.post(*" ) or process.executable like ("/bin/python*", "/usr/bin/python*", "/usr/local/bin/python*") and process.args == "-c" and process.args like~ ( "*exec(*base64*", "*exec(*decode(*", "*exec(*marshal*", "*exec(*pickle*", "*eval(*exec(*", "*eval(*", "*subprocess.popen(*", "*subprocess.run(*", "*pickle.loads(*", "*marshal.loads(*", "*binascii*", "*os.system(*", "*os.popen(*", "*pty.*", "*dup2*", "*fileno()*", "*connect(*", "*bind(*", "*execve(*", "*base64*", "*base32*", "*base16*", "*base85*", "*decode(*", "*zlib.*", "*[::-1]*", "*socket.socket(*", "*socket.connect(*", "*socket.bind(*" ) or process.executable like ("/bin/ruby*", "/usr/bin/ruby*", "/usr/local/bin/ruby*") and process.args like "-e*" and process.args like~ ( "*system(*", "*exec(*", "*IO.popen(*", "*Open3.popen3(*", "*spawn(*", "*eval(*", "*load(*", "*Marshal.load(*", "*Fiddle.dlopen(*", "*Fiddle::Function.new(*", "*base64*", "*zlib*", "*net/http*", "*socket*", "*open-uri*", "*pack(*", "*unpack(*" ) ) and container.id like "?*"
Install detection rules in Elastic Security
Detect Suspicious Interpreter Execution Detected via Defend for Containers 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).