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Hello,
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<div>I hope everyone is doing well!</div>
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<div>Below is the entry for today.</div>
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<div>10/15/2021 - Diary entry #370:</div>
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<div>In our Daily Diary #334, we covered Microsoft Office documents used as an infection vector and the risks of companies using older versions of the Microsoft Office. Besides that, threat actors are always innovating by changing their malicious macro scripts
to be undetectable by anti-malware engines. That's the case of a new phishing campaign named MirrorBlast, which is delivering malicious Excel documents that are difficult to detect.
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<div>Once the document is opened by a victim and as soon as they allow the macro execution, the malicious code downloads an MSI package that can download one of two variants of other malicious payloads. Next, it just waits for a command sent by its Command
& Control. Then, it initiates a Powershell instance which will deploy a next stage payload yet unknown.</div>
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The developers behind MirrorBlast are putting an extra effort to obfuscate their malicious code to infect financial companies. The group behind this campaign is believed to be the TA505, a Russian threat actor known for being creative regarding their infection
vectors during attacks.<br>
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Kind Regards,<br>
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<p style="color:rgb(12,12,12); font-size:13px; font-family:Arial,Helvetica,sans-serif; margin-top:0px; margin-bottom:0px">
<strong>Felipe Tarijon de Almeida</strong><br>
Malware Analyst<br>
<strong>Appgate</strong></p>
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E:<span style="margin:0px"> <a href="mailto:felipe.tarijon@appgate.com" title="mailto:felipe.tarijon@appgate.com">
felipe.tarijon@appgate.com</a></span><br>
O:<span> </span><span style="margin:0px; background-color:white">+55 11 97467 9549</span></p>
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