mirror of
https://github.com/elastic/protections-artifacts
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protectionsmachine
66 lines
2.4 KiB
TOML
66 lines
2.4 KiB
TOML
[rule]
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description = """
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This rule monitors for suspicious PHP command executions by detecting the start of a PHP process with a command line
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argument that contains keywords commonly used by attackers to execute malicious code. These command line arguments
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include operations to execute code, create subprocesses, and encode or decode data.
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"""
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id = "d00bd50b-577e-47a7-9234-b4bfaa599791"
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license = "Elastic License v2"
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name = "Suspicious PHP Command Execution"
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os_list = ["linux"]
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version = "1.0.7"
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query = '''
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process where event.type == "start" and event.action == "exec" and process.parent.executable != null and
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process.executable like ("/bin/php*", "/usr/bin/php*", "/usr/local/bin/php*") and
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process.args == "-r" and process.command_line like~ (
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"*exec(*", "*system(*", "*shell_exec(*", "*passthru(*", "*proc_open(*", "*pcntl_exec(*", "*popen(*",
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"*eval(*", "*assert(*", "*create_function(*", "*preg_replace(*e*", "*include(*", "*require(*",
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"*base64_decode(*", "*gzinflate(*", "*gzuncompress(*", "*str_rot13(*", "*urldecode(*", "*chr(*",
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"*ord(*", "*strrev(*", "*strtr(*", "*pack(*", "*unpack(*", "*curl_exec(*", "*curl_multi_exec(*",
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"*file_get_contents(*", "*fopen(*", "*fsockopen(*", "*pfsockopen(*", "*stream_socket_client(*",
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"*socket_create(*", "*socket_connect(*", "*socket_write(*", "*socket_read(*", "*mail(*",
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"*move_uploaded_file(*"
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) and not (
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// Exclude web server processes as these are covered by other rules
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process.working_directory like (
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"/var/www/*", "/builds/*", "/home/*/jenkins/*", "/home/*/public_html*", "/var/lib/ldap-account-manager/config"
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) or
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process.parent.args like ("/var/www/html/*", "source /home/*/.claude/shell*") or
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process.args like "/usr/local/cpanel/*" or
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process.command_line like (
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"*https://composer.github.io/installer.sig*",
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"*json_decode(file_get_contents('php://stdin')*"
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) or
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process.parent.command_line == "runc init"
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)
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'''
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min_endpoint_version = "7.15.0"
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optional_actions = []
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[[actions]]
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action = "kill_process"
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field = "process.entity_id"
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state = 0
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[[actions]]
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action = "kill_process"
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field = "process.parent.entity_id"
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state = 0
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[[threat]]
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framework = "MITRE ATT&CK"
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[[threat.technique]]
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id = "T1059"
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name = "Command and Scripting Interpreter"
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reference = "https://attack.mitre.org/techniques/T1059/"
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[threat.tactic]
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id = "TA0002"
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name = "Execution"
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reference = "https://attack.mitre.org/tactics/TA0002/"
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[internal]
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min_endpoint_version = "7.15.0"
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