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61 lines
2.4 KiB
Lua
61 lines
2.4 KiB
Lua
--
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-- (C) 2019-20 - ntop.org
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--
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local alert_keys = require "alert_keys"
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local format_utils = require "format_utils"
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local json = require("dkjson")
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-- #######################################################
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-- @brief Prepare an alert table used to generate the alert
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-- @param alert_severity A severity as defined in `alert_consts.alert_severities`
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-- @param alert_granularity A granularity as defined in `alert_consts.alerts_granularities`
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-- @param last_error A table containing the last lateral movement error, e.g.,
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-- {"event":"create","shost":"192.168.2.153","dhost":"224.0.0.68","dport":1968,"vlan_id":0,"l4":17,"l7":0,"first_seen":1602488355,"last_seen":1602488355,"num_uses":1}
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-- @return A table with the alert built
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local function createLateralMovementError(alert_severity, alert_granularity, last_error)
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-- Create a subtype, to avoid merging multiple lateral movement alerts together
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local alert_subtype = last_error.shost .. "/" .. last_error.dhost .. "/" .. last_error.dport .. "/" .. last_error.l4 .. "/" .. last_error.l7
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local threshold_type = {
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alert_severity = alert_severity,
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alert_subtype = alert_subtype,
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alert_granularity = alert_granularity,
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alert_type_params = {
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error_msg = last_error
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},
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}
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return threshold_type
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end
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-- #######################################################
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local function formatLateralMovementErrorMessage(ifid, alert, status)
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local msg = status.error_msg
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local vlan_id = msg.vlan_id or 0
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local client = {host = msg.shost, vlan = vlan_id}
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local server = {host = msg.dhost, vlan = vlan_id}
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local rsp = hostinfo2detailshref(client, nil, hostinfo2label(client))..
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" <i class=\"fas fa-exchange-alt fa-lg\" aria-hidden=\"true\" data-original-title=\"\" title=\"\"></i> " ..
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hostinfo2detailshref(server, nil, hostinfo2label(server))..
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" ["..i18n("port")..": "..msg.dport.."]"
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rsp = rsp .. "["..i18n("application")..": "..interface.getnDPIProtoName(msg.l7).."]"
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if not isEmptyString(msg.info) then
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rsp = rsp .. "[" .. msg.info .. "]"
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end
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return(rsp)
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end
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-- #######################################################
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return {
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alert_key = alert_keys.ntopng.alert_lateral_movement,
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i18n_title = "alerts_dashboard.lateral_movement",
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i18n_description = formatLateralMovementErrorMessage,
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icon = "fas fa-arrows-alt-h",
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creator = createLateralMovementError,
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}
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