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<blockquote data-quote="Andy Ful" data-source="post: 941460" data-attributes="member: 32260"><p>All will be blocked by H_C Recommended_Settings.</p><p>Defender on default settings will block UAC bypass (except the new method), so the malware will not disable Windows Firewall. Windows 10 already blocks many UAC bypasses, but Defender can currently block all known bypasses and can also learn to block the new bypasses, like in the case of my POC malware based on disabling Defender. But in the case of the new UAC bypass, one has to activate the ASR rule "Use advanced protection against ransomware" or activate "Block executable files from running unless they meet a prevalence, age, or trusted list criteria" (to block any non-prevalent EXEs). These rules can be activated by CD.</p><p></p><p>SWH + Windows SmartScreen + Windows built-in unpacker can prevent the execution of these EXEs, too. SWH will do it when one would like to open them from an archiver application or email client. Windows built-in unpacker + SmartScreen will block execution when the EXE is uncompressed before execution or it is executed after downloading from the Internet.</p><p>If the malware is executed from the USB drive, it can be blocked by the Defender ASR rule "Block untrusted and unsigned processes that run from USB".</p><p></p><p>Of course, some of these protection layers would not stop [USER=7463]@cruelsister[/USER] (if highly motivated), because she could sign the malware with a valid EV certificate and make an effort to find a working UAC bypass. Fortunately, such attacks on home users are very rare and users on SUA (with Windows 10) were still protected.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite109" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>Post edited.</p></blockquote><p></p>
[QUOTE="Andy Ful, post: 941460, member: 32260"] All will be blocked by H_C Recommended_Settings. Defender on default settings will block UAC bypass (except the new method), so the malware will not disable Windows Firewall. Windows 10 already blocks many UAC bypasses, but Defender can currently block all known bypasses and can also learn to block the new bypasses, like in the case of my POC malware based on disabling Defender. But in the case of the new UAC bypass, one has to activate the ASR rule "Use advanced protection against ransomware" or activate "Block executable files from running unless they meet a prevalence, age, or trusted list criteria" (to block any non-prevalent EXEs). These rules can be activated by CD. SWH + Windows SmartScreen + Windows built-in unpacker can prevent the execution of these EXEs, too. SWH will do it when one would like to open them from an archiver application or email client. Windows built-in unpacker + SmartScreen will block execution when the EXE is uncompressed before execution or it is executed after downloading from the Internet. If the malware is executed from the USB drive, it can be blocked by the Defender ASR rule "Block untrusted and unsigned processes that run from USB". Of course, some of these protection layers would not stop [USER=7463]@cruelsister[/USER] (if highly motivated), because she could sign the malware with a valid EV certificate and make an effort to find a working UAC bypass. Fortunately, such attacks on home users are very rare and users on SUA (with Windows 10) were still protected.:) Post edited. [/QUOTE]
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