Difference between revisions of "MSSecurityEssentials"

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== Gotchas ==
 
== Gotchas ==
  
−
* Soon after installation it can recognise potentially useful software as a threat. For example if you have UltraVNC installed it will flag up UltraVNC.exe and RealVNC.exe. There's a risk that a user, when prompted, will choose to remove or quarantine such files and remove the administrator's ability to connect. Administrative users can allow, quarantine or remove suspicious files where as Limited users can only remove or quarantine suspicious files. It would be useful to script the white-listing of specific files that should not be considered a threat, upon installation. White-listing can be performed maually using: Show details → Recommendation → Select an action → Allow → Apply actions (note that Close means 'don't take any action at this point') → Close - this is saved system-wide.
+
* Soon after installation it can recognise potentially useful software as a threat. For example if you have UltraVNC installed it will flag up UltraVNC.exe and RealVNC.exe. There's a risk that a user, when prompted, will choose to remove or quarantine such files and remove the administrator's ability to connect. Administrative users can allow, quarantine or remove suspicious files where as Limited users can only remove or quarantine suspicious files. It would be useful to script the white-listing of specific files that should not be considered a threat, upon installation.
 +
 
 +
White-listing can be performed manually using: Show details → Recommendation → Select an action → Allow → Apply actions (note that Close means 'don't take any action at this point') → Close - this is saved system-wide.
 +
 
 +
Once done manually you can export the following registry "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft Antimalware\Threats\ThreatIDDefaultAction". This key contains a list of signatures which are allowed and the action to perform, being dword:00000006 the action "Allow". Then import this file into the rest of computers with "regedit /s file.reg". Following the above example, to allow RealVNC and UltraVNC the registry file should look like this:
 +
 
 +
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft Antimalware\Threats\ThreatIDDefaultAction]
 +
; Allow RealVNC
 +
"7480"=dword:00000006
 +
; Allow UltraVNC
 +
"16555"=dword:00000006
 +
 
 +
Also, to set up exclusion paths and processes silently you could include the following keys in the registry file:
 +
 
 +
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft Antimalware\Exclusions\Processes]
 +
"C:\\Program Files\\UltraVNC\\winvnc.exe"=dword:00000000
 +
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft Antimalware\Exclusions\Paths]
 +
"C:\\Program Files\\UltraVNC\\winvnc.exe"=dword:00000000
  
 
== References ==
 
== References ==

Revision as of 15:53, 23 March 2010

WPKG Package

This is a silent installer and uninstaller for Microsoft Security Essentials, Windows XP, US English, 32-bit version. 

<package
	id="microsoft-security-essentials"
	name="Microsoft Security Essentials"
	revision="2"
	reboot="false"
	priority="1">

	<check
		type="uninstall"
		condition="exists"
		path="Microsoft Security Essentials"/>

	<install
		cmd='%SOFTWARE%\ms_security_essentials\mssefullinstall-x86fre-en-us-xp.exe /s /runwgacheck' />

	<upgrade
		cmd='%SOFTWARE%\microsoft-security-essentials\mssefullinstall-x86fre-en-us-xp.exe /s /runwgacheck /o' />

	<remove
		cmd='%SOFTWARE%\ms_security_essentials\mssefullinstall-x86fre-en-us-xp.exe /s /u'/>
</package>

Note than an upgrade line is required because although the program may update itself (though I'm not certain it does), if you bump the revision number then WPKG will want to run an 'update'.

Installer command-line switches

  • /s - perform a silent installation
  • /runwgacheck - automatically perform a Windows Genuine Advantage check
  • /o - don't automatically run the updater and the system scan after installation - when you then login it may then give a red indicator and say that real time protection is off because virus definition files are out of date. I've had a few differing experiences at this point, either it updates them quickly automatically, or if you click on the system tray icon it tells you it's out of date but then updates it quickly, or it displays this then just waits for you to manually press the 'Update' button.. This is as both an Administrator and as a Limited User.

Gotchas

  • Soon after installation it can recognise potentially useful software as a threat. For example if you have UltraVNC installed it will flag up UltraVNC.exe and RealVNC.exe. There's a risk that a user, when prompted, will choose to remove or quarantine such files and remove the administrator's ability to connect. Administrative users can allow, quarantine or remove suspicious files where as Limited users can only remove or quarantine suspicious files. It would be useful to script the white-listing of specific files that should not be considered a threat, upon installation.

White-listing can be performed manually using: Show details → Recommendation → Select an action → Allow → Apply actions (note that Close means 'don't take any action at this point') → Close - this is saved system-wide.

Once done manually you can export the following registry "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft Antimalware\Threats\ThreatIDDefaultAction". This key contains a list of signatures which are allowed and the action to perform, being dword:00000006 the action "Allow". Then import this file into the rest of computers with "regedit /s file.reg". Following the above example, to allow RealVNC and UltraVNC the registry file should look like this:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft Antimalware\Threats\ThreatIDDefaultAction]

Allow RealVNC

"7480"=dword:00000006

Allow UltraVNC

"16555"=dword:00000006

Also, to set up exclusion paths and processes silently you could include the following keys in the registry file:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft Antimalware\Exclusions\Processes] "C:\\Program Files\\UltraVNC\\winvnc.exe"=dword:00000000 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft Antimalware\Exclusions\Paths] "C:\\Program Files\\UltraVNC\\winvnc.exe"=dword:00000000

References

* http://social.answers.microsoft.com/Forums/en/msestart/thread/a944fa0a-db4c-43da-affb-ab21eb9a4d65
* http://social.answers.microsoft.com/Forums/en-US/msestart/thread/56426422-5c5d-4296-a055-421b554f5eee

Updates

Virus Definition Updates

Virus definition updates are automatically downloaded and used.

To download the Microsoft Forefront Client Security antimalware definition update file(Mpam-fe.exe) for 32-bit (x86-based) versions of Windows, click the following link: http://go.microsoft.com/fwlink/?LinkID=87342&clcid=0x409

To download the Microsoft Forefront Client Security antimalware definition update filefor 64-bit versions of Windows, click the following link: http://go.microsoft.com/fwlink/?LinkID=87341&clcid=0x409

Run in silent mode:

Mpam-fe.exe -q

Program Updates

Microsoft Security Essentials updates itself through Windows Update.

Retrieved from "https://wpkg.org/index.php?title=MSSecurityEssentials&oldid=7875"