Source code for plaso.parsers.winreg_plugins.services
# -*- coding: utf-8 -*-
"""Plug-in to format the Services and Drivers key with Start and Type values."""
from __future__ import unicode_literals
from plaso.containers import windows_events
from plaso.containers import time_events
from plaso.lib import definitions
from plaso.parsers import winreg
from plaso.parsers.winreg_plugins import interface
[docs]class ServicesPlugin(interface.WindowsRegistryPlugin):
"""Plug-in to format the Services and Drivers keys having Type and Start."""
NAME = 'windows_services'
DESCRIPTION = 'Parser for services and drivers Registry data.'
# TODO: use a key path prefix match here. Might be more efficient.
# HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Services
FILTERS = frozenset([
interface.WindowsRegistryKeyWithValuesFilter([
'Start', 'Type'])])
URLS = ['http://support.microsoft.com/kb/103000']
[docs] def GetServiceDll(self, key):
"""Get the Service DLL for a service, if it exists.
Checks for a ServiceDLL for in the Parameters subkey of a service key in
the Registry.
Args:
key (dfwinreg.WinRegistryKey): a Windows Registry key.
Returns:
str: path of the service DLL or None.
"""
parameters_key = key.GetSubkeyByName('Parameters')
if not parameters_key:
return None
service_dll = parameters_key.GetValueByName('ServiceDll')
if not service_dll:
return None
return service_dll.GetDataAsObject()
# pylint 1.9.3 wants a docstring for kwargs, but this is not useful to add.
# pylint: disable=missing-param-doc
[docs] def ExtractEvents(self, parser_mediator, registry_key, **kwargs):
"""Extracts events from a Windows Registry key.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
registry_key (dfwinreg.WinRegistryKey): Windows Registry key.
"""
values_dict = {}
service_type_value = registry_key.GetValueByName('Type')
service_start_value = registry_key.GetValueByName('Start')
# Grab the ServiceDLL value if it exists.
if service_type_value and service_start_value:
service_dll = self.GetServiceDll(registry_key)
if service_dll:
values_dict['ServiceDll'] = service_dll
# Gather all the other string and integer values and insert as they are.
for value in registry_key.GetValues():
if not value.name:
continue
if value.name not in values_dict:
if value.DataIsString() or value.DataIsInteger():
values_dict[value.name] = value.GetDataAsObject()
elif value.DataIsMultiString():
values_dict[value.name] = ', '.join(value.GetDataAsObject())
# Create a specific service event, so that we can recognize and expand
# certain values when we're outputting the event.
event_data = windows_events.WindowsRegistryServiceEventData()
event_data.key_path = registry_key.path
event_data.offset = registry_key.offset
event_data.regvalue = values_dict
event_data.urls = self.URLS
event = time_events.DateTimeValuesEvent(
registry_key.last_written_time, definitions.TIME_DESCRIPTION_WRITTEN)
parser_mediator.ProduceEventWithEventData(event, event_data)
winreg.WinRegistryParser.RegisterPlugin(ServicesPlugin)