Emotet — Office (OOXML) / .XLSX malware analysis

Static analysis result for SHA-256 af00e06755294d2f…

MALICIOUS

Office (OOXML) / .XLSX

3.63 MB Created: 2021-05-10 14:24:00 UTC Authoring application: Microsoft Excel 15.0300
MD5: 551f47ac50b90566906330060d2d0d55 SHA-1: 720e305d65fff4a6227ba433a8cece690208b19d SHA-256: af00e06755294d2f89ed0a2d30c45d169d1f54ae7a35a80e9fe6c8710b18a990
368 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell T1059.005 Visual Basic T1204.002 Malicious File T1105 Ingress Tool Transfer

The sample contains a Workbook_Open macro that leverages VBA to execute PowerShell commands. This script is designed to download and execute a second-stage payload from one of the provided URLs. The ClamAV detection and the presence of VBA macros strongly indicate the Emotet family, a known downloader.

Heuristics 10

  • PowerShell reference in VBA critical OLE_VBA_PS
    PowerShell reference in VBA
  • 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://formregist.preducation.institute/asset/select2-4.0.6-rc.1/dist/js/i18n/JdNyZT4Ous.php
    • https://etoile-ins.gr/images/sampledata/parks/animals/FqHGKAIhAIJ5vCl.php
    • https://souqalmedical.com/RtcbGfrHp6myt.php
    • https://oyapsin.com/vendor/phpdocumentor/reflection-docblock/src/DocBlock/nY2XbZSaw.php
    • https://areyoutrumpmatized.com/oDzNpnjc96.php
    • https://easymail.tk/seo/libs/sendgrid-php/lib/helpers/ocvbCqV2sO.php
    • https://gama-clean.com/wp-content/plugins/coming-soon/resources/data-templates/1CuHy5moYlKUZt.php
    • https://gacontadores.com/wp-content/themes/harvard/js/woocommerce/ztx20ZYD3jtlf.php
    • https://malakabeng76.co.za/COPYRIGHT/img/ajGVCg8PW.php
    • https://edgy.checkmynewsite.com/wp-content/plugins/woo-product-feed-pro/classes/channels/0NQ5kknhl5V2uw0.php

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
2b4655570fecb488aafc25397a1bc7a219bcc059013bde22d1ac8f4a72f34305		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 2675228 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.
vbaProject_00.bin
eac464f29ec6a7fc7e9b44b5d448eeb210e52749ff9d11fd8e7aa9bca4cceb62		 vba-project OOXML VBA project: xl/vbaProject.bin 5427712 bytes
Detection
ClamAV: Doc.Downloader.Emotet-10019767-0
Obfuscation or payload: unlikely

Open this report in the interactive analyzer, or submit your own file for analysis.