MuddyWater trojan campaign adds a few new notes

guest · Jun 15, 2018

MuddyWater trojan campaign adds a few new notes
June 15, 2018
https://www.scmagazine.com/muddywater-trojan-campaign-adds-a-few-new-notes/article/774001/

The malicious actors behind the MuddyWater campaign have given the malware a facelift changing the way the malicious files are executed and altering the social engineering used to entice its victims to open the infected Word document.

“One notable difference in the analyzed samples is that they do not directly download the Visual Basic Script(VBS) and PowerShell component files, and instead encode all the scripts on the document itself. The scripts will then be decoded and dropped to execute the payload without needing to download the component files,” wrote Trend Micro threat analysts Michael Villanueva and Martin Co.

The other change is the bait document. [...] Trend Micro recommends the use of standard anti-phishing defenses to block this attack and to make employees aware of the potential nature of attached documents.
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