Dridex — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 e8895c6342f316a7…

MALICIOUS

Office (OLE) / .XLS

799.0 KB Created: 2021-01-13 13:09:53 Authoring application: Microsoft Excel
MD5: 4efba8abc399d9891fa7fb6bd0efca7d SHA-1: 73c06f5c58947c257e4a087a1cf64346cf187851 SHA-256: e8895c6342f316a7523ff822c7087ba3a765ab9ef9edd489f9a072740cb743a0
142 Risk Score

Malware Insights

Dridex · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell

The file is detected as Dridex by ClamAV and exhibits characteristics of a dropper. The presence of VBA p-code auto-execution with execution tokens, specifically `GetObject` within `Workbook_Open`, suggests an attempt to run malicious code. Although VBA macros could not be extracted, the heuristic `SC_STR_WSCRIPT` indicates the use of Windows Script Host, likely to download and execute a second-stage payload from the numerous unknown-reputation URLs found within the document.

Heuristics 5

  • ClamAV: Doc.Dropper.Dridex-9845759-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Dridex-9845759-0
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • Unsupported Office format for VBA extraction info OFFICE_FORMAT_UNSUPPORTED
    olevba could not extract VBA macros (AssertionError); format-agnostic byte-level scans still ran. Likely legacy, encrypted, or malformed OLE/OOXML — re-scanning the same bytes will yield the same outcome.
  • 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://www.cutandscrew.com/css/images/icons/light/dark/bwvTFSxdRMx8u.php
    • https://guides1815.be/admin_bkpe/fckeditor/editor/skins/default/vmLyYWik62.php
    • http://multi-chemical.com/Rvlx1evnUjlGIy.php
    • http://royalvacations.co.zw/fonts/flaticon/font/V701kINZ491h.php
    • https://webinlavorazione.it/HjU8tH3k.php
    • https://www.dropsitelite.it/wp-content/plugins/woocommerce-services/i18n/json/on0rRPN6iWl5uT.php
    • https://wellnessway.co.za/wp-content/plugins/coming-soon-maintenance-mode-from-acurax/css/fonts/vSoOsa1e.php
    • http://univertech.com/wp-includes/js/tinymce/plugins/charmap/huR9GcNBnM6.php
    • http://www.sarcars.in/wp-includes/js/tinymce/themes/inlite/Fj1Me7I5aqhuT.php
    • https://amazecorp.com/iS4eqxbadEt.php
    • http://www.w3.org/1999/XSL/Transform

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