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Video Reviews - Security and Privacy
Of LoLBins, 0-Days, ESET, and Microsoft Defender
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<blockquote data-quote="Andy Ful" data-source="post: 1083242" data-attributes="member: 32260"><p>Many AVs have such aggressive behaviors. Some can block legal tools, others can block LOLBins.</p><p>Some time ago I tested an AV that blocked by default the outbound Internet connections of PowerShell.</p><p>When I tested ZoneAlarm in the Challenge series, it blocked the shortcut with benign CmdLines containing cmd[.]exe.</p><p></p><p>Eset is known to have almost no false positives (on default settings), but its detection is not among top AVs. Of course, Eset has got HIPS that can strengthen the protection with a cost of false positives.</p><p></p><p>Edit.</p><p>Microsoft uses Machine Learning to decrease the number of false positives. The ML model probably recognized that using Certutil to download files is very uncommon among customers, so such behavior can be detected as malicious.</p></blockquote><p></p>
[QUOTE="Andy Ful, post: 1083242, member: 32260"] Many AVs have such aggressive behaviors. Some can block legal tools, others can block LOLBins. Some time ago I tested an AV that blocked by default the outbound Internet connections of PowerShell. When I tested ZoneAlarm in the Challenge series, it blocked the shortcut with benign CmdLines containing cmd[.]exe. Eset is known to have almost no false positives (on default settings), but its detection is not among top AVs. Of course, Eset has got HIPS that can strengthen the protection with a cost of false positives. Edit. Microsoft uses Machine Learning to decrease the number of false positives. The ML model probably recognized that using Certutil to download files is very uncommon among customers, so such behavior can be detected as malicious. [/QUOTE]
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