Emotet — Office (OOXML) / .XLSM malware analysis

Static analysis result for SHA-256 95f36b06a9ef5bdf…

MALICIOUS

Office (OOXML) / .XLSM

2.61 MB Created: 2021-05-06 15:15:25 UTC Authoring application: Microsoft Excel 15.0300
MD5: 77838fe56970ec040ea084f6c5b3def6 SHA-1: 99963315c98ca2de645e322f2fa6ee5e5775b949 SHA-256: 95f36b06a9ef5bdf1301634ff67e49d51643e747c9be8ade616e26328c10ca02
308 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File T1059.005 Visual Basic

The presence of a Workbook_Open macro, CreateObject calls, and visible LOLBin execution instructions strongly indicate malicious intent. The ClamAV detection as 'Doc.Downloader.Emotet' further confirms this. The embedded URLs are likely used to download and execute a second-stage payload, consistent with Emotet's typical behavior.

Heuristics 9

  • ClamAV: Doc.Downloader.Emotet-10019767-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-10019767-0
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • VBA project inside OOXML medium OOXML_VBA
    Document contains vbaProject.bin — VBA macros present
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://bhuttangill.com/wp-includes/js/tinymce/themes/inlite/Agk5yxu6D3SEW.php
    • https://traffickerdigital.guru/wp-content/plugins/stops-core-theme-and-plugin-updates/templates/notices/3RKTmgwCIosO1Q.php
    • https://vipecotton.com/wp-content/plugins/wpml-media-translation/res/css/7q0Vreh38laGy9.php
    • https://bitfore.co.uk/wp-content/plugins/elementor/includes/admin-templates/1WiStiiT.php
    • https://senalgrafsac.com/prueba/vendor/bootstrap/css/Z1Oeq1XQhEC.php
    • https://grupoakrabu.com/img/galeria/paEAehZhSWNmH.php
    • https://darkmattercompany.com/billing/templates/orderforms/comparison/images/OMqNCOuk.php
    • https://wickerconsultingllc.com/wp-content/plugins/force-regenerate-thumbnails/jquery-ui/redmond/MGggfHzY0QH0Cp3.php
    • https://multigranos.com.bo/wp-content/plugins/woocommerce/i18n/languages/SFMm6Qoe.php
    • https://italmaps.com/nuovo/wp-includes/js/jquery/ui/vUYhCCeCNKQoEk.php

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
531cbaf85fd626c11fd23cc744d6ca6d66ba0f50230a48756e04cc9a788db46f		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 1930555 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.
vbaProject_00.bin
c3719a60f9b59724609a0e2b7acce5bd1e5b3e17fd51cd19211190bacc2de3ea		 vba-project OOXML VBA project: xl/vbaProject.bin 3932160 bytes
Detection
ClamAV: Doc.Downloader.Emotet-10019767-0
Obfuscation or payload: unlikely

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