Added powershell.exe network event monitoring

- and changed the references to my Twitter handle

Author: Neo23x0

sysmonconfig-export.xml

@@ -172,7 +172,7 @@
 			<Image condition="image">at.exe</Image> <!--Microsoft:Windows: Remote task scheduling | Credit @ion-storm -->
 			<Image condition="image">certutil.exe</Image> <!--Microsoft:Windows: Certificate tool can contact outbound | Credit @ion-storm and @FVT [ https://twitter.com/FVT/status/834433734602530817 ] -->
 			<Image condition="image">cmd.exe</Image> <!--Microsoft:Windows: Command prompt-->
-			<Image condition="image">cscript.exe</Image> <!--Microsoft:WindowsScriptingHost: | Credit @Neo23x0 [ https://gist.github.com/Neo23x0/a4b4af9481e01e749409 ] -->
+			<Image condition="image">cscript.exe</Image> <!--Microsoft:WindowsScriptingHost: | Credit @Cyb3rOps [ https://gist.github.com/Neo23x0/a4b4af9481e01e749409 ] -->
 			<Image condition="image">java.exe</Image> <!--Java: Monitor usage of vulnerable application | Credit @ion-storm -->
 			<Image condition="image">mshta.exe</Image> <!--Microsoft:Windows: HTML application executes scripts without IE protections | Credit @ion-storm [ https://en.wikipedia.org/wiki/HTML_Application ] -->
 			<Image condition="image">msiexec.exe</Image> <!--Microsoft:Windows: Can install from http:// paths | Credit @vector-sec -->
@@ -184,8 +184,9 @@
 			<Image condition="image">regsvr32.exe</Image> <!--Microsoft:Windows: [ https://subt0x10.blogspot.com/2016/04/bypass-application-whitelisting-script.html ] -->
 			<Image condition="image">rundll32.exe</Image> <!--Microsoft:Windows: [ https://blog.cobaltstrike.com/2016/07/22/why-is-rundll32-exe-connecting-to-the-internet/ ] -->
 			<Image condition="image">sc.exe</Image> <!--Microsoft:Windows: Remotely change Windows service settings from command line | Credit @ion-storm -->
-			<Image condition="image">wmic.exe</Image> <!--Microsoft:WindowsManagementInstrumentation: Credit @Neo23x0 [ https://gist.github.com/Neo23x0/a4b4af9481e01e749409 ] -->
+			<Image condition="image">wmic.exe</Image> <!--Microsoft:WindowsManagementInstrumentation: Credit @Cyb3rOps [ https://gist.github.com/Neo23x0/a4b4af9481e01e749409 ] -->
 			<Image condition="image">wscript.exe</Image> <!--Microsoft:WindowsScriptingHost: | Credit @arekfurt -->
+			<Image condition="image">powershell.exe</Image> <!--Microsoft:WindowsPowerShell: | Credit @Cyb3rOps -->
 			<!--Ports: Suspicious-->
 			<DestinationPort condition="is">22</DestinationPort> <!--SSH protocol-->
 			<DestinationPort condition="is">23</DestinationPort> <!--Telnet protocol-->