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<blockquote data-quote="Windows_Security" data-source="post: 709394" data-attributes="member: 50782"><p><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite109" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> A few hundred samples since 20003 with valid signatures against a few hundred thousand unsigned samples a day</p><p></p><p>With the insights of the posted articles (thx [USER=38832]@upnorth[/USER]) this is by far the simplest attack surface reduction tweak I know</p><p></p><p>Save below the line as "Block_unsigned_elevation.reg"</p><p>____________________________________________________</p><p>Windows Registry Editor Version 5.00</p><p></p><p>[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System]</p><p>"ValidateAdminCodeSignatures"=dword:00000001</p><p></p><p>____________________________________________________</p><p></p><p><strong>You can still run unisgned software</strong>, but <strong>you can't install unsigned software</strong></p><p>(you will get this prompt when unsigned software wants to install/elevate to admin rights,</p><p>which is probably one of Microsoft's best self explaining prompts ever <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite132" alt=":unsure:" title="Unsure :unsure:" loading="lazy" data-shortname=":unsure:" /> not)</p><p>[ATTACH=full]179498[/ATTACH]</p><p></p><p>Just run the registry file below (save as Allow_unsigned_elevation.reg) when you want to install it</p><p>(don't forget to switch back to blocking unsigned elevation)</p><p>____________________________________________________</p><p>Windows Registry Editor Version 5.00</p><p></p><p>[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System]</p><p>"ValidateAdminCodeSignatures"=dword:00000000</p><p></p><p>____________________________________________________</p></blockquote><p></p>
[QUOTE="Windows_Security, post: 709394, member: 50782"] :) A few hundred samples since 20003 with valid signatures against a few hundred thousand unsigned samples a day With the insights of the posted articles (thx [USER=38832]@upnorth[/USER]) this is by far the simplest attack surface reduction tweak I know Save below the line as "Block_unsigned_elevation.reg" ____________________________________________________ Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System] "ValidateAdminCodeSignatures"=dword:00000001 ____________________________________________________ [B]You can still run unisgned software[/B], but [B]you can't install unsigned software[/B] (you will get this prompt when unsigned software wants to install/elevate to admin rights, which is probably one of Microsoft's best self explaining prompts ever :unsure: not) [ATTACH=full]179498[/ATTACH] Just run the registry file below (save as Allow_unsigned_elevation.reg) when you want to install it (don't forget to switch back to blocking unsigned elevation) ____________________________________________________ Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System] "ValidateAdminCodeSignatures"=dword:00000000 ____________________________________________________ [/QUOTE]
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