after active-response fixes
This commit is contained in:
parent
7e95376a22
commit
1cf27eb64f
@ -1,6 +1,5 @@
|
||||
#!/usr/bin/env python3
|
||||
|
||||
|
||||
# This script is adapted version of the Python active response script sample, provided by Wazuh, in the documentation:
|
||||
# https://documentation.wazuh.com/current/user-manual/capabilities/active-response/custom-active-response-scripts.html
|
||||
# It is provided under the below copyright statement:
|
||||
@ -13,244 +12,116 @@
|
||||
# License (version 2) as published by the FSF - Free Software
|
||||
# Foundation.
|
||||
#
|
||||
# This version has changes in
|
||||
# 1) the first lines of code with the assignments, and
|
||||
# 2) the Start Custom Action Add section
|
||||
# This adapted version is free software. Rudi Klein, april 2024
|
||||
|
||||
import datetime
|
||||
import json
|
||||
import os
|
||||
import sys
|
||||
from pathlib import PureWindowsPath, PurePosixPath
|
||||
|
||||
from wazuh_notifier_module import import_config as ic
|
||||
from wazuh_notifier_module import set_environment as se
|
||||
from wazuh_notifier_module import construct_basic_message
|
||||
from wazuh_notifier_module import get_config
|
||||
from wazuh_notifier_module import parameters_deconstruct
|
||||
from wazuh_notifier_module import set_environment
|
||||
from wazuh_notifier_module import threat_mapping
|
||||
|
||||
# Some variable assignments
|
||||
# Path variable assignments
|
||||
|
||||
wazuh_path, ar_path, config_path = se()
|
||||
|
||||
ADD_COMMAND = 0
|
||||
DELETE_COMMAND = 1
|
||||
CONTINUE_COMMAND = 2
|
||||
ABORT_COMMAND = 3
|
||||
|
||||
OS_SUCCESS = 0
|
||||
OS_INVALID = -1
|
||||
|
||||
|
||||
class Message:
|
||||
|
||||
def __init__(self):
|
||||
self.alert = ""
|
||||
self.command = 0
|
||||
|
||||
|
||||
def write_debug_file(ar_name, msg):
|
||||
with open(ar_path, mode="a") as log_file:
|
||||
ar_name_posix = str(PurePosixPath(PureWindowsPath(ar_name[ar_name.find("active-response"):])))
|
||||
log_file.write(
|
||||
str(datetime.datetime.now().strftime('%Y/%m/%d %H:%M:%S')) + " " + ar_name_posix + ": " + msg + "\n")
|
||||
|
||||
|
||||
def setup_and_check_message(argv):
|
||||
# get alert from stdin
|
||||
input_str = ""
|
||||
for line in sys.stdin:
|
||||
input_str = line
|
||||
break
|
||||
|
||||
write_debug_file(argv[0], input_str)
|
||||
|
||||
try:
|
||||
data = json.loads(input_str)
|
||||
except ValueError:
|
||||
write_debug_file(argv[0], 'Decoding JSON has failed, invalid input format')
|
||||
Message.command = OS_INVALID
|
||||
return Message
|
||||
|
||||
Message.alert = data
|
||||
|
||||
command = data.get("command")
|
||||
|
||||
if command == "add":
|
||||
Message.command = ADD_COMMAND
|
||||
elif command == "delete":
|
||||
Message.command = DELETE_COMMAND
|
||||
else:
|
||||
Message.command = OS_INVALID
|
||||
write_debug_file(argv[0], 'Not valid command: ' + command)
|
||||
|
||||
return Message
|
||||
|
||||
|
||||
def send_keys_and_check_message(argv, keys):
|
||||
# build and send message with keys
|
||||
keys_msg = json.dumps(
|
||||
{"version": 1, "origin": {"name": argv[0], "module": "active-response"}, "command": "check_keys",
|
||||
"parameters": {"keys": keys}})
|
||||
|
||||
write_debug_file(argv[0], keys_msg)
|
||||
|
||||
print(keys_msg)
|
||||
sys.stdout.flush()
|
||||
|
||||
# read the response of previous message
|
||||
input_str = ""
|
||||
while True:
|
||||
line = sys.stdin.readline()
|
||||
if line:
|
||||
input_str = line
|
||||
break
|
||||
|
||||
write_debug_file(argv[0], input_str)
|
||||
|
||||
try:
|
||||
data = json.loads(input_str)
|
||||
except ValueError:
|
||||
write_debug_file(argv[0], 'Decoding JSON has failed, invalid input format')
|
||||
return Message
|
||||
|
||||
action = data.get("command")
|
||||
|
||||
if "continue" == action:
|
||||
ret = CONTINUE_COMMAND
|
||||
elif "abort" == action:
|
||||
ret = ABORT_COMMAND
|
||||
else:
|
||||
ret = OS_INVALID
|
||||
write_debug_file(argv[0], "Invalid value of 'command'")
|
||||
|
||||
return ret
|
||||
|
||||
|
||||
def parameters_deconstruct(argv, event_keys):
|
||||
a_id: str = str(event_keys["agent"]["id"])
|
||||
a_name: str = str(event_keys["agent"]["name"])
|
||||
e_id: str = str(event_keys["rule"]["id"])
|
||||
e_description: str = str(event_keys["rule"]["description"])
|
||||
e_level: str = str(event_keys["rule"]["level"])
|
||||
e_fired_times: str = str(event_keys["rule"]["firedtimes"])
|
||||
e_full_event: str = str(json.dumps(event_keys, indent=0).replace('"', '')
|
||||
.replace('{', '')
|
||||
.replace('}', '')
|
||||
.replace('[', '')
|
||||
.replace(']', '')
|
||||
.replace(',', '')
|
||||
.replace(' ', '')
|
||||
)
|
||||
|
||||
if e_id in ic("excluded_rules") or a_id in ic("excluded_agents"):
|
||||
|
||||
write_debug_file(argv[0], "Excluded rule or agent: " + e_id + "/" + a_id)
|
||||
|
||||
else:
|
||||
|
||||
return a_id, a_name, e_id, e_description, e_level, e_fired_times, e_full_event
|
||||
|
||||
|
||||
def construct_basic_message(argv, accent: str, a_id: str, a_name: str, e_id: str, e_description: str, e_level: str,
|
||||
e_fired_times: str):
|
||||
# Adding the BOLD text string to the Discord message. Ntfy has a different message format.
|
||||
|
||||
basic_message: str = ("--message " + '"' +
|
||||
accent + "Agent: " + accent + a_name + " (" + a_id + ")" + "\n" +
|
||||
accent + "Event id: " + accent + e_id + "\n" +
|
||||
accent + "Description: " + accent + e_description + "\n" +
|
||||
accent + "Threat level: " + accent + e_level + "\n" +
|
||||
# Watch this last addition to the string. It should include the closing quote for the
|
||||
# basic_message string. It must be closed by -> '"'. This will be done outside this function
|
||||
# in order to enable another specific addition (event_full_message) in the calling procedure.
|
||||
accent + "Times fired: " + accent + e_fired_times + "\n")
|
||||
|
||||
return basic_message
|
||||
wazuh_path, ar_path, config_path, notifier_path = set_environment()
|
||||
|
||||
|
||||
def main(argv):
|
||||
write_debug_file(argv[0], "Started")
|
||||
|
||||
# validate json and get command
|
||||
msg = setup_and_check_message(argv)
|
||||
|
||||
if msg.command < 0:
|
||||
sys.exit(OS_INVALID)
|
||||
# data = load_message(argv)
|
||||
# This example event can be used for troubleshooting. Comment out the line above and uncomment the line below.
|
||||
data: dict = {"version": 1, "origin": {"name": "worker01", "module": "wazuh-execd"}, "command": "add",
|
||||
"parameters": {"extra_args": [], "alert": {"timestamp": "2021-02-01T20:58:44.830+0000",
|
||||
"rule": {"level": 15,
|
||||
"description": "Shellshock attack detected",
|
||||
"id": "31168", "mitre": {"id": ["T1068", "T1190"],
|
||||
"tactic": [
|
||||
"Privilege Escalation",
|
||||
"Initial Access"],
|
||||
"technique": [
|
||||
"Exploitation for Privilege Escalation",
|
||||
"Exploit Public-Facing Application"]},
|
||||
"info": "CVE-2014-6271https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6271",
|
||||
"firedtimes": 2, "mail": "true",
|
||||
"groups": ["web", "accesslog", "attack"],
|
||||
"pci_dss": ["11.4"], "gdpr": ["IV_35.7.d"],
|
||||
"nist_800_53": ["SI.4"],
|
||||
"tsc": ["CC6.1", "CC6.8", "CC7.2", "CC7.3"]},
|
||||
"agent": {"id": "000", "name": "wazuh-server"},
|
||||
"manager": {"name": "wazuh-server"},
|
||||
"id": "1612213124.6448363",
|
||||
"full_log": "192.168.0.223 - - [01/Feb/2021:20:58:43 +0000] \"GET / HTTP/1.1\" 200 612 \"-\" \"() { :; }; /bin/cat /etc/passwd\"",
|
||||
"decoder": {"name": "web-accesslog"},
|
||||
"data": {"protocol": "GET", "srcip": "192.168.0.223",
|
||||
"id": "200", "url": "/"},
|
||||
"location": "/var/log/nginx/access.log"},
|
||||
"program": "/var/ossec/active-response/bin/firewall-drop"}}
|
||||
|
||||
if msg.command == ADD_COMMAND:
|
||||
alert = data["parameters"]["alert"]
|
||||
|
||||
""" Start Custom Key
|
||||
At this point, it is necessary to select the keys from the alert and add them into the keys array.
|
||||
"""
|
||||
# Get the threat level from the event (message)
|
||||
threat_level = data["parameters"]["alert"]["rule"]["level"]
|
||||
|
||||
alert = msg.alert["parameters"]["alert"]
|
||||
keys = [alert["rule"]]
|
||||
parameters: dict = parameters_deconstruct(argv, alert)
|
||||
|
||||
agent_id, agent_name, event_id, event_description, event_level, event_fired_times, event_full_message = \
|
||||
parameters_deconstruct(argv, alert)
|
||||
# Get the YAML config if any
|
||||
config: dict = get_config()
|
||||
|
||||
action = send_keys_and_check_message(argv, keys)
|
||||
# Get the mapping between threat level (event) and priority (Discord/ntfy)
|
||||
threat_priority = threat_mapping(threat_level, config.get('np_1'), config.get('np_2'),
|
||||
config.get('np_3'), config.get('np_4'), config.get('np_5'))
|
||||
|
||||
# if necessary, abort execution
|
||||
if action != CONTINUE_COMMAND:
|
||||
|
||||
if action == ABORT_COMMAND:
|
||||
write_debug_file(argv[0], "Aborted")
|
||||
sys.exit(OS_SUCCESS)
|
||||
if "discord" in config["targets"]:
|
||||
accent: str = "**"
|
||||
elif "ntfy" in config["targets"]:
|
||||
accent: str = ""
|
||||
else:
|
||||
write_debug_file(argv[0], "Invalid command")
|
||||
sys.exit(OS_INVALID)
|
||||
accent: str = ""
|
||||
|
||||
""" Start Custom Action Add """
|
||||
notifier_message: str = construct_basic_message(argv, accent,
|
||||
parameters.get('a_id', '000'),
|
||||
parameters.get('a_name', 'agent not found'),
|
||||
parameters.get('e_id', '9999'),
|
||||
parameters.get('e_description', 'Event not found'),
|
||||
parameters.get('e_level', '9999'),
|
||||
parameters.get('e_fired_times', '3')
|
||||
)
|
||||
|
||||
if str(ic("discord_enabled")) == "1":
|
||||
if "discord" in config["targets"]:
|
||||
|
||||
accent = "**"
|
||||
discord_notifier = '{0}/active-response/bin/wazuh-discord-notifier.py'.format(wazuh_path)
|
||||
discord_exec = "python3 " + discord_notifier + " "
|
||||
write_debug_file(argv[0], "Start Discord notifier")
|
||||
discord_message = construct_basic_message(argv, accent, agent_id, agent_name, event_id, event_description,
|
||||
event_level, event_fired_times)
|
||||
discord_notifier: str = '{0}/active-response/bin/wazuh-discord-notifier.py'.format(wazuh_path)
|
||||
discord_exec: str = "python3 " + discord_notifier + " "
|
||||
|
||||
if ic("discord_full_message") == "1":
|
||||
discord_message = discord_message + "\n" + accent + "__Full event__" + accent + event_full_message + '"'
|
||||
discord_message: str = notifier_message
|
||||
|
||||
if "discord" in config["full_message"]:
|
||||
discord_message: str = (discord_message + "\n" + accent + "__Full event__" +
|
||||
accent + parameters['e_full_event'] + '"')
|
||||
else:
|
||||
discord_message = discord_message + '"'
|
||||
discord_command = discord_exec + discord_message
|
||||
discord_message: str = discord_message + '"'
|
||||
|
||||
discord_command: str = discord_exec + discord_message
|
||||
os.system(discord_command)
|
||||
|
||||
if str(ic("ntfy_enabled")) == "1":
|
||||
accent = ""
|
||||
ntfy_notifier = '{0}/active-response/bin/wazuh-ntfy-notifier.py'.format(wazuh_path)
|
||||
ntfy_exec = "python3 " + ntfy_notifier + " "
|
||||
write_debug_file(argv[0], "Start NTFY notifier")
|
||||
ntfy_message = construct_basic_message(argv, accent, agent_id, agent_name, event_level, event_description,
|
||||
event_id, event_fired_times)
|
||||
if "ntfy" in config["targets"]:
|
||||
|
||||
ntfy_notifier: str = '{0}/active-response/bin/wazuh-ntfy-notifier.py'.format(wazuh_path)
|
||||
ntfy_exec: str = "python3 " + ntfy_notifier + " "
|
||||
ntfy_message: str = notifier_message
|
||||
|
||||
# If the full message flag is set, the full message PLUS the closing parenthesis will be added
|
||||
if ic("ntfy_full_message") == "1":
|
||||
ntfy_message = ntfy_message + "\n" + "Full event" + event_full_message + '"'
|
||||
else:
|
||||
ntfy_message = ntfy_message + '"'
|
||||
|
||||
ntfier_command = ntfy_exec + ntfy_message
|
||||
os.system(ntfier_command)
|
||||
|
||||
""" End Custom Action Add """
|
||||
|
||||
elif msg.command == DELETE_COMMAND:
|
||||
|
||||
""" Start Custom Action Delete """
|
||||
|
||||
pass
|
||||
|
||||
""" End Custom Action Delete """
|
||||
if "ntfy" in config["full_message"]:
|
||||
ntfy_message: str = ntfy_message + "\n" + "Full event" + parameters['e_full_event'] + '"'
|
||||
|
||||
else:
|
||||
write_debug_file(argv[0], "Invalid command")
|
||||
ntfy_message: str = ntfy_message + '"'
|
||||
|
||||
write_debug_file(argv[0], "Ended")
|
||||
|
||||
sys.exit(OS_SUCCESS)
|
||||
ntfy_command: str = ntfy_exec + ntfy_message
|
||||
os.system(ntfy_command)
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
|
||||
@ -16,98 +16,51 @@
|
||||
# with their friends and communities. It allows for receiving message using webhooks.
|
||||
# For more information: https://discord.com.
|
||||
|
||||
import os
|
||||
from os.path import join, dirname
|
||||
|
||||
import requests
|
||||
from dotenv import load_dotenv
|
||||
|
||||
from wazuh_notifier_module import get_arguments as ga
|
||||
from wazuh_notifier_module import get_yaml_config as yc
|
||||
from wazuh_notifier_module import set_basic_defaults as bd
|
||||
from wazuh_notifier_module import set_environment as se
|
||||
from wazuh_notifier_module import set_time as st
|
||||
from wazuh_notifier_module import threat_priority_mapping as tpm
|
||||
from wazuh_notifier_module import color_mapping
|
||||
from wazuh_notifier_module import get_arguments
|
||||
from wazuh_notifier_module import get_config
|
||||
from wazuh_notifier_module import get_env
|
||||
from wazuh_notifier_module import set_environment
|
||||
from wazuh_notifier_module import set_time
|
||||
|
||||
# Get path values
|
||||
wazuh_path, ar_path, config_path = se()
|
||||
|
||||
wazuh_path, ar_path, config_path, notifier_path = set_environment()
|
||||
|
||||
# Get time value
|
||||
now_message, now_logging = st()
|
||||
now_message, now_logging = set_time()
|
||||
|
||||
# Retrieve webhook from .env
|
||||
# Get some paths.
|
||||
discord_url, ntfy_url = get_env()
|
||||
|
||||
# Catching some path errors.
|
||||
try:
|
||||
dotenv_path = join(dirname(__file__), '.env')
|
||||
load_dotenv(dotenv_path)
|
||||
if not os.path.isfile(dotenv_path):
|
||||
raise Exception(dotenv_path, "file not found")
|
||||
|
||||
discord_webhook = os.getenv("DISCORD_WEBHOOK")
|
||||
|
||||
except Exception as err:
|
||||
# output error, and return with an error code
|
||||
print(str(Exception(err.args)))
|
||||
exit(err)
|
||||
# Get the yaml config
|
||||
config: dict = get_config()
|
||||
|
||||
# the POST builder. Prepares https and sends the request.
|
||||
|
||||
|
||||
def discord_command(n_server, n_sender, n_destination, n_priority, n_message, n_tags, n_click):
|
||||
def discord_command(n_url, n_sender, n_destination, n_priority, n_message, n_tags, n_click):
|
||||
color = color_mapping(n_priority)
|
||||
|
||||
x_message = (now_message +
|
||||
"\n\n" + n_message + "\n\n" +
|
||||
"Priority: " + n_priority + "\n" +
|
||||
"Tags: " + n_tags + "\n\n" + n_click
|
||||
)
|
||||
n_data = {"username": n_sender, "embeds": [{"description": x_message, "title": n_destination}]}
|
||||
n_data = {"username": n_sender, "embeds": [{"color": color, "description": x_message, "title": n_destination}]}
|
||||
|
||||
requests.post(n_server, json=n_data)
|
||||
requests.post(n_url, json=n_data)
|
||||
|
||||
|
||||
# Remove 1st argument from the list of command line arguments
|
||||
# argument_list: list = sys.argv[1:]
|
||||
|
||||
# Short options
|
||||
options: str = "u:s:p:m:t:c:hv"
|
||||
|
||||
# Long options
|
||||
long_options: list = ["server=", "sender=", "destination=", "priority=", "message=", "tags=", "click=", "help", "view"]
|
||||
|
||||
# Defining who I am
|
||||
notifier = "discord"
|
||||
|
||||
# Retrieve the hard-coded basic defaults.
|
||||
url, sender, destination, priority, message, tags, click = get_arguments()
|
||||
|
||||
(d_server, d_sender, d_destination, d_priority, d_message, d_tags, d_click, d_notifier_priority_1,
|
||||
d_notifier_priority_2, d_notifier_priority_3, d_notifier_priority_4, d_notifier_priority_5) = bd(notifier)
|
||||
|
||||
# Use the values from the config yaml if available. Overrides the basic defaults (get_yaml_config).
|
||||
|
||||
yc_args = [notifier, d_server, d_sender, d_destination, d_priority, d_message, d_tags, d_click, d_notifier_priority_1,
|
||||
d_notifier_priority_2, d_notifier_priority_3, d_notifier_priority_4, d_notifier_priority_5]
|
||||
|
||||
(server, sender, destination, priority, message, tags, click, notifier_priority_1, notifier_priority_2,
|
||||
notifier_priority_3, notifier_priority_4, notifier_priority_5) = yc(*yc_args)
|
||||
|
||||
# Get params during execution. Params found here, override minimal defaults and/or config settings.
|
||||
|
||||
if ga(notifier, options, long_options) is None:
|
||||
pass
|
||||
# sender, destination, priority, message, tags, click = "", "", "", "", "", ""
|
||||
else:
|
||||
sender, destination, priority, message, tags, click = ga(notifier, options, long_options)
|
||||
|
||||
# Get the threat level from the message and map it to priority
|
||||
|
||||
threat_level = message[message.find('Threat level:') + 13:message.find('Threat level:') + 15].replace(" ", "")
|
||||
|
||||
# Get the mapping between threat level (event) and priority (Discord/ntfy)
|
||||
|
||||
# noinspection PyRedeclaration
|
||||
priority = tpm(threat_level, notifier_priority_1, notifier_priority_2, notifier_priority_3,
|
||||
notifier_priority_4, notifier_priority_5)
|
||||
|
||||
# Finally, execute the POST request
|
||||
discord_command(discord_webhook, sender, destination, priority, message, tags, click)
|
||||
discord_command(discord_url, sender, destination, priority, message, tags, click)
|
||||
|
||||
@ -1,31 +0,0 @@
|
||||
---
|
||||
#start of yaml
|
||||
|
||||
# This is the yaml config file for both the wazuh-ntfy-notifier.py and wazuh-discord-notifier.py.
|
||||
# The yaml needs to be in the same folder as the wazuh-ntfy-notifier.py and wazuh-discord-notifier.py
|
||||
|
||||
# COMMON (custom-wazuh-notifiers.py) configuration settings start here.
|
||||
# 1 = messages will be sent through this message server. 0 = messages will NOT be sent through this message server.
|
||||
|
||||
targets: "discord,ntfy"
|
||||
|
||||
# Exclude rules that are listed in the ossec.conf active response definition.
|
||||
|
||||
excluded_rules: "5401, 5403"
|
||||
excluded_agents: "999"
|
||||
|
||||
# Priority mapping from 1-12 (Wazuh events) to 1-5 (Discord and ntfy notification)
|
||||
|
||||
notifier_priority_1: 12, 11, 10
|
||||
notifier_priority_2: 9, 8
|
||||
notifier_priority_3: 7, 6
|
||||
notifier_priority_4: 5, 4
|
||||
notifier_priority_5: 3 ,2, 1
|
||||
|
||||
sender: "Wazuh (IDS)"
|
||||
click: "https://google.com"
|
||||
|
||||
|
||||
#end of yaml
|
||||
...
|
||||
|
||||
32
wazuh-notify-config.yaml
Executable file
32
wazuh-notify-config.yaml
Executable file
@ -0,0 +1,32 @@
|
||||
---
|
||||
#start of yaml
|
||||
|
||||
# This is the yaml config file for both the wazuh-ntfy-notifier.py and wazuh-discord-notifier.py.
|
||||
# The yaml needs to be in the same folder as the wazuh-ntfy-notifier.py and wazuh-discord-notifier.py
|
||||
|
||||
targets: "discord, ntfy"
|
||||
full_message: "discord, ntfy"
|
||||
|
||||
# Exclude rules that are listed in the ossec.conf active response definition.
|
||||
|
||||
excluded_rules: "5401, 5403"
|
||||
excluded_agents: "999"
|
||||
|
||||
# Priority mapping from 0-15 (Wazuh events: threat levels) to 1-5 ( in notification)
|
||||
# https://documentation.wazuh.com/current/user-manual/ruleset/rules-classification.html
|
||||
|
||||
priority_5: [ 15,14,13,12 ]
|
||||
priority_4: [ 11,10,9 ]
|
||||
priority_3: [ 8,7,6 ]
|
||||
priority_2: [ 5,4 ]
|
||||
priority_1: [ 3,2,1,0 ]
|
||||
|
||||
sender: "Wazuh (IDS)"
|
||||
click: "https://google.com"
|
||||
|
||||
|
||||
#end of yaml
|
||||
...
|
||||
|
||||
|
||||
|
||||
@ -1,13 +1,43 @@
|
||||
import datetime
|
||||
import getopt
|
||||
import json
|
||||
import os
|
||||
import sys
|
||||
import time
|
||||
from os.path import join, dirname
|
||||
from pathlib import PureWindowsPath, PurePosixPath
|
||||
|
||||
import yaml
|
||||
from dotenv import load_dotenv
|
||||
|
||||
|
||||
def set_environment() -> tuple:
|
||||
# todo fix reference when running manually/in process
|
||||
|
||||
set_wazuh_path = "/home/rudi/pycharm"
|
||||
# set_wazuh_path = os.path.abspath(os.path.join(__file__, "../../.."))
|
||||
set_ar_path = '{0}/logs/active-responses.log'.format(set_wazuh_path)
|
||||
set_config_path = '{0}/etc/wazuh-notify-config.yaml'.format(set_wazuh_path)
|
||||
set_notifier_path = '{0}/active-response/bin'.format(set_wazuh_path)
|
||||
|
||||
return set_wazuh_path, set_ar_path, set_config_path, set_notifier_path
|
||||
|
||||
|
||||
# Define paths: wazuh_path = wazuh root directory
|
||||
# ar_path = active-responses.log path,
|
||||
# config_path = wazuh-notifier-wazuh-notify-config.yaml
|
||||
|
||||
wazuh_path, ar_path, config_path, notifier_path = set_environment()
|
||||
|
||||
|
||||
# Debug writer
|
||||
def write_debug_file(ar_name, msg):
|
||||
with open(ar_path, mode="a") as log_file:
|
||||
ar_name_posix = str(PurePosixPath(PureWindowsPath(ar_name[ar_name.find("active-response"):])))
|
||||
log_file.write(
|
||||
str(datetime.datetime.now().strftime('%Y/%m/%d %H:%M:%S')) + " " + ar_name_posix + ": " + msg + "\n")
|
||||
|
||||
|
||||
def get_env():
|
||||
try:
|
||||
dotenv_path = join(dirname(__file__), '.env')
|
||||
@ -36,46 +66,51 @@ def set_time():
|
||||
return now_message, now_logging
|
||||
|
||||
|
||||
# Define paths: wazuh_path = wazuh root directory
|
||||
# ar_path = active-responses.log path,
|
||||
# config_path = wazuh-notifier-wazuh-notify-config.yaml
|
||||
|
||||
def set_environment():
|
||||
# todo fix reference when running manually/in process
|
||||
|
||||
wazuh_path = "/var/ossec"
|
||||
# wazuh_path = os.path.abspath(os.path.join(__file__, "../../.."))
|
||||
ar_path = '{0}/logs/active-responses.log'.format(wazuh_path)
|
||||
config_path = 'wazuh-notifier-wazuh-notify-config.yaml'.format(wazuh_path)
|
||||
|
||||
return wazuh_path, ar_path, config_path
|
||||
|
||||
|
||||
# Import configuration settings from wazuh-notifier-wazuh-notify-config.yaml
|
||||
# Import configuration settings from wazuh-notify-config.yaml
|
||||
|
||||
|
||||
def import_config():
|
||||
try:
|
||||
_, _, config_path = set_environment()
|
||||
_, _, this_config_path, _ = set_environment()
|
||||
|
||||
with open(config_path, 'r') as ntfier_config:
|
||||
with open(this_config_path, 'r') as ntfier_config:
|
||||
config: dict = yaml.safe_load(ntfier_config)
|
||||
return config
|
||||
except (FileNotFoundError, PermissionError, OSError):
|
||||
return None
|
||||
|
||||
|
||||
# Show configuration settings from wazuh-notifier-wazuh-notify-config.yaml
|
||||
# Process configuration settings from wazuh-notify-config.yaml
|
||||
|
||||
|
||||
def get_config():
|
||||
config = import_config()
|
||||
|
||||
config['np_5'] = config.get('np_1', [15, 14, 13, 12])
|
||||
config['np_4'] = config.get('np_2', [11, 10, 9])
|
||||
config['np_3'] = config.get('np_3', [8, 7, 6])
|
||||
config['np_2'] = config.get('np_4', [5, 4])
|
||||
config['np_1'] = config.get('np_5', [3, 2, 1, 0])
|
||||
config['targets'] = config.get('targets', 'ntfy, discord')
|
||||
config['excluded_rules'] = config.get('excluded_rules', '')
|
||||
config['excluded_agents'] = config.get('excluded_agents', '')
|
||||
config['sender'] = 'Wazuh (IDS)'
|
||||
config['click'] = 'https://wazuh.org'
|
||||
|
||||
return config
|
||||
|
||||
|
||||
# Show configuration settings from wazuh-notify-config.yaml
|
||||
|
||||
|
||||
def view_config():
|
||||
_, _, config_path = set_environment()
|
||||
_, _, this_config_path, _ = set_environment()
|
||||
|
||||
try:
|
||||
with open(config_path, 'r') as ntfier_config:
|
||||
with open(this_config_path, 'r') as ntfier_config:
|
||||
print(ntfier_config.read())
|
||||
except (FileNotFoundError, PermissionError, OSError):
|
||||
print(config_path + " does not exist or is not accessible")
|
||||
print(this_config_path + " does not exist or is not accessible")
|
||||
return
|
||||
|
||||
|
||||
@ -84,53 +119,49 @@ def view_config():
|
||||
|
||||
def ar_log():
|
||||
now = set_time()
|
||||
_, ar_path, _ = set_environment()
|
||||
_, this_ar_path, _, _ = set_environment()
|
||||
msg = '{0} {1} {2}'.format(now, os.path.realpath(__file__), 'Post JSON Alert')
|
||||
f = open(ar_path, 'a')
|
||||
f = open(this_ar_path, 'a')
|
||||
f.write(msg + '\n')
|
||||
f.close()
|
||||
|
||||
|
||||
def threat_priority_mapping(threat_level, np_1, np_2, np_3, np_4, np_5):
|
||||
def threat_mapping(threat_level, np_1, np_2, np_3, np_4, np_5):
|
||||
# Map threat level v/s priority
|
||||
|
||||
if threat_level in np_1:
|
||||
priority_mapping = "1"
|
||||
priority_color = 0x339900
|
||||
elif threat_level in np_2:
|
||||
priority_mapping = "2"
|
||||
priority_color = 0x99cc33
|
||||
elif threat_level in np_3:
|
||||
priority_mapping = "3"
|
||||
priority_color = 0xffcc00
|
||||
elif threat_level in np_4:
|
||||
priority_mapping = "4"
|
||||
priority_color = 0xff9966
|
||||
elif threat_level in np_5:
|
||||
priority_mapping = "5"
|
||||
priority_color = 0xcc3300
|
||||
else:
|
||||
priority_mapping = "3"
|
||||
|
||||
return priority_mapping
|
||||
|
||||
|
||||
def color_mapping(priority):
|
||||
# Map priority to color
|
||||
|
||||
if priority == 1:
|
||||
priority_color = 0x339900
|
||||
elif priority == 2:
|
||||
priority_color = 0x99cc33
|
||||
elif priority == 3:
|
||||
priority_color = 0xffcc00
|
||||
elif priority == 4:
|
||||
priority_color = 0xff9966
|
||||
elif priority == 5:
|
||||
priority_color = 0xcc3300
|
||||
else:
|
||||
priority_color = 0xffcc00
|
||||
|
||||
return priority_mapping, priority_color
|
||||
|
||||
|
||||
def get_yaml_config():
|
||||
config = import_config()
|
||||
|
||||
config['np_1'] = config.get('np_1', '1, 2, 3')
|
||||
config['np_2'] = config.get('np_2', '4,5')
|
||||
config['np_3'] = config.get('np_3', '6,7')
|
||||
config['np_4'] = config.get('np_4', '8,9')
|
||||
config['np_5'] = config.get('np_5', '10, 11, 12')
|
||||
config['targets'] = config.get('targets', 'ntfy, discord')
|
||||
config['excluded_rules'] = config.get('excluded_rules', '')
|
||||
config['excluded_agents'] = config.get('excluded_agents', '')
|
||||
config['sender'] = 'Wazuh (IDS)'
|
||||
config['click'] = 'https://wazuh.org'
|
||||
|
||||
return config
|
||||
return priority_color
|
||||
|
||||
|
||||
def get_arguments():
|
||||
@ -155,8 +186,15 @@ def get_arguments():
|
||||
-v, --view show config.
|
||||
|
||||
"""
|
||||
url: str
|
||||
sender: str
|
||||
destination: str
|
||||
message: str
|
||||
priority: int
|
||||
tags: str
|
||||
click: str
|
||||
|
||||
url, sender, destination, message, priority, tags, click = "", "", "", "", "", "", ""
|
||||
url, sender, destination, message, priority, tags, click = "", "", "", "", 0, "", ""
|
||||
|
||||
argument_list: list = sys.argv[1:]
|
||||
|
||||
@ -181,28 +219,83 @@ def get_arguments():
|
||||
exit()
|
||||
|
||||
elif current_argument in ("-u", "--url"):
|
||||
url = current_value
|
||||
url: str = current_value
|
||||
|
||||
elif current_argument in ("-s", "--sender"):
|
||||
sender = current_value
|
||||
sender: str = current_value
|
||||
|
||||
elif current_argument in ("-d", "--destination"):
|
||||
destination = current_value
|
||||
destination: str = current_value
|
||||
|
||||
elif current_argument in ("-p", "--priority"):
|
||||
priority = current_value
|
||||
priority: int = current_value
|
||||
|
||||
elif current_argument in ("-m", "--message"):
|
||||
message = current_value
|
||||
message: str = current_value
|
||||
|
||||
elif current_argument in ("-t", "--tags"):
|
||||
tags = current_value
|
||||
tags: str = current_value
|
||||
|
||||
elif current_argument in ("-c", "--click"):
|
||||
click = current_value
|
||||
click: str = current_value
|
||||
|
||||
except getopt.error as err:
|
||||
# output error, and return with an error code
|
||||
print(str(err))
|
||||
|
||||
return url, sender, destination, message, priority, tags, click
|
||||
|
||||
|
||||
def load_message(argv):
|
||||
# get alert from stdin
|
||||
input_str: str = ""
|
||||
for line in sys.stdin:
|
||||
input_str: str = line
|
||||
break
|
||||
|
||||
data: json = json.loads(input_str)
|
||||
|
||||
if data.get("command") == "add":
|
||||
return data
|
||||
else:
|
||||
# todo fix error message
|
||||
sys.exit(1)
|
||||
|
||||
|
||||
def parameters_deconstruct(argv, event_keys):
|
||||
config: dict = get_config()
|
||||
|
||||
a_id: str = str(event_keys["agent"]["id"])
|
||||
a_name: str = str(event_keys["agent"]["name"])
|
||||
e_id: str = str(event_keys["rule"]["id"])
|
||||
e_description: str = str(event_keys["rule"]["description"])
|
||||
e_level: str = str(event_keys["rule"]["level"])
|
||||
e_fired_times: str = str(event_keys["rule"]["firedtimes"])
|
||||
e_full_event: str = str(json.dumps(event_keys, indent=4).replace('"', '')
|
||||
.replace('{', '')
|
||||
.replace('}', '')
|
||||
.replace('[', '')
|
||||
.replace(']', '')
|
||||
)
|
||||
|
||||
if e_id not in config["excluded_rules"] or a_id not in config["excluded_agents"]:
|
||||
parameters: dict = dict(a_id=a_id, a_name=a_name, e_id=e_id, e_description=e_description, e_level=e_level,
|
||||
e_fired_times=e_fired_times, e_full_event=e_full_event)
|
||||
return parameters
|
||||
|
||||
|
||||
def construct_basic_message(argv, accent: str, a_id: str, a_name: str, e_id: str, e_description: str, e_level: str,
|
||||
e_fired_times: str) -> str:
|
||||
# Adding the BOLD text string to the Discord message. Ntfy has a different message format.
|
||||
|
||||
basic_message: str = ("--message " + '"' +
|
||||
accent + "Agent: " + accent + a_name + " (" + a_id + ")" + "\n" +
|
||||
accent + "Event id: " + accent + e_id + "\n" +
|
||||
accent + "Description: " + accent + e_description + "\n" +
|
||||
accent + "Threat level: " + accent + e_level + "\n" +
|
||||
# Watch this last addition to the string. It should include the closing quote for the
|
||||
# basic_message string. It must be closed by -> '"'. This will be done outside this function
|
||||
# in order to enable another specific addition (event_full_message) in the calling procedure.
|
||||
accent + "Times fired: " + accent + e_fired_times + "\n")
|
||||
|
||||
return basic_message
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user