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Malware Analysis
Abaddon analysis, using Discord as a C&C
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<blockquote data-quote="struppigel" data-source="post: 912371" data-attributes="member: 86910"><p>Good work! </p><p>I follow you on Twitter now and added your blog's RSS feed to see more of your analysis.</p><p></p><p>Some notes: Blocking legit discord domains, as you advise to do, is probably no good idea. Depends on the context of course, but generally, no.</p><p></p><p>Regarding the Yara rule. Searching for 2 byte sequences makes it very slow. Yara will search for it everywhere, find hundrets or thousands of matches and afterwards check if the condition is met. The MZ signature is preferably checked via uint16(0) == 0x5A4D</p></blockquote><p></p>
[QUOTE="struppigel, post: 912371, member: 86910"] Good work! I follow you on Twitter now and added your blog's RSS feed to see more of your analysis. Some notes: Blocking legit discord domains, as you advise to do, is probably no good idea. Depends on the context of course, but generally, no. Regarding the Yara rule. Searching for 2 byte sequences makes it very slow. Yara will search for it everywhere, find hundrets or thousands of matches and afterwards check if the condition is met. The MZ signature is preferably checked via uint16(0) == 0x5A4D [/QUOTE]
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