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<blockquote data-quote="Andy Ful" data-source="post: 973847" data-attributes="member: 32260"><p><strong><span style="font-size: 18px">SWH vs. EXE --> Scripts</span></strong></p><p></p><p>Normally, SWH depends on SmartScreen and AV to fight EXE files. But, malc0ders can use EXE files also as script droppers to avoid AV detection. Here are some in-the-wild examples used by the Russia-linked Shuckworm group (aka Gamaredon, Armageddon) in cyber-espionage attacks against targets in Ukraine.</p><p>[URL unfurl="false"]https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/shuckworm-gamaredon-espionage-ukraine[/URL]</p><p></p><p>The EXE malware used in attacks would drop/execute the following files that could download the secondary payloads:</p><ol> <li data-xf-list-type="ol">VBScript scripts with several (spoofed) extensions like .ppt, .dat, .rar, .nls, etc.</li> <li data-xf-list-type="ol">.cmd scripts</li> </ol><p><strong>The infection chain </strong>(delivery stage in blue):</p><p><strong><span style="color: rgb(41, 105, 176)">EXE ---> Scripts (primary paylods) ----> </span></strong><span style="color: rgb(184, 49, 47)"><strong>secondary payload execution (EXE payloads and scripts)</strong></span></p><p></p><p>The above infection chain is used to fool Administrators and AVs. All such attacks would be stopped by SWH in default settings (SRP blocks) at the delivery stage.</p><p></p><p>Another infection vector was performed via weaponized Word documents. The article does not inform about details, but it was probably a document with VBA macro (SWH would block it by default). </p><p>Of course, the attackers could use something else (like a legacy Excel document with Excel 4.0 macro). This could partially succeed with SWH prior to ver. 1.1.1.1. SWH ver. 2.0.0.0 can block such attacks in Recommended Settings (including the DocumentsAntiExploit tool).<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite130" alt="(y)" title="Thumbs up (y)" loading="lazy" data-shortname="(y)" /></p><p></p><p><strong><span style="color: rgb(0, 168, 133)">Post updated to reflect the changes in SWH ver. 1.1.1.1 and later.</span></strong></p></blockquote><p></p>
[QUOTE="Andy Ful, post: 973847, member: 32260"] [B][SIZE=5]SWH vs. EXE --> Scripts[/SIZE][/B] Normally, SWH depends on SmartScreen and AV to fight EXE files. But, malc0ders can use EXE files also as script droppers to avoid AV detection. Here are some in-the-wild examples used by the Russia-linked Shuckworm group (aka Gamaredon, Armageddon) in cyber-espionage attacks against targets in Ukraine. [URL unfurl="false"]https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/shuckworm-gamaredon-espionage-ukraine[/URL] The EXE malware used in attacks would drop/execute the following files that could download the secondary payloads: [LIST=1] [*]VBScript scripts with several (spoofed) extensions like .ppt, .dat, .rar, .nls, etc. [*].cmd scripts [/LIST] [B]The infection chain [/B](delivery stage in blue): [B][COLOR=rgb(41, 105, 176)]EXE ---> Scripts (primary paylods) ----> [/COLOR][/B][COLOR=rgb(184, 49, 47)][B]secondary payload execution (EXE payloads and scripts)[/B][/COLOR] The above infection chain is used to fool Administrators and AVs. All such attacks would be stopped by SWH in default settings (SRP blocks) at the delivery stage. Another infection vector was performed via weaponized Word documents. The article does not inform about details, but it was probably a document with VBA macro (SWH would block it by default). Of course, the attackers could use something else (like a legacy Excel document with Excel 4.0 macro). This could partially succeed with SWH prior to ver. 1.1.1.1. SWH ver. 2.0.0.0 can block such attacks in Recommended Settings (including the DocumentsAntiExploit tool).(y) [B][COLOR=rgb(0, 168, 133)]Post updated to reflect the changes in SWH ver. 1.1.1.1 and later.[/COLOR][/B] [/QUOTE]
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