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Cylance - Targeted and Bypassed
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<blockquote data-quote="artek" data-source="post: 825432" data-attributes="member: 22897"><p>It's literally what the article is describing - a strong bias towards a <strong>specific </strong>game. That's not to say there's not other files that won't fall under the same category. But if there's no evidence of something like that out there, it's a hell of an asumption to make. Publications often overblow the severity of a problem to get clicks. Calling this a monumental problem that is difficult to fix is disingenuous when the only thing Cylance needs to do to prevent these false negatives is to tell their algorithms to disregard that specific string that they've been using as a whitelisting mechanism.</p><p></p><p>Here's the quote again:</p><p></p><p>"Combining an analysis of the feature extraction process, its heavy reliance on strings, <strong>and its strong bias for this specific game</strong>, we are capable of crafting a simple and rather amusing bypass. Namely, by appending a selected list of strings to a malicious file, we are capable of changing its score significantly, avoiding detection."</p><p></p><p>Here's another quote:</p><p></p><p>"By taking <strong>STRINGS </strong>from an <strong>online gaming</strong> program and <strong>APPENDING </strong>them to malicious files, researchers were able to trick Cylance’s AI-based antivirus engine into thinking programs like WannaCry and other malware are benign."</p><p></p><p>If you wanted to call it lazy whitelisting I'd agree with you. But hard to fix? Get outa here.</p></blockquote><p></p>
[QUOTE="artek, post: 825432, member: 22897"] It's literally what the article is describing - a strong bias towards a [B]specific [/B]game. That's not to say there's not other files that won't fall under the same category. But if there's no evidence of something like that out there, it's a hell of an asumption to make. Publications often overblow the severity of a problem to get clicks. Calling this a monumental problem that is difficult to fix is disingenuous when the only thing Cylance needs to do to prevent these false negatives is to tell their algorithms to disregard that specific string that they've been using as a whitelisting mechanism. Here's the quote again: "Combining an analysis of the feature extraction process, its heavy reliance on strings, [B]and its strong bias for this specific game[/B], we are capable of crafting a simple and rather amusing bypass. Namely, by appending a selected list of strings to a malicious file, we are capable of changing its score significantly, avoiding detection." Here's another quote: "By taking [B]STRINGS [/B]from an [B]online gaming[/B] program and [B]APPENDING [/B]them to malicious files, researchers were able to trick Cylance’s AI-based antivirus engine into thinking programs like WannaCry and other malware are benign." If you wanted to call it lazy whitelisting I'd agree with you. But hard to fix? Get outa here. [/QUOTE]
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