Dridex — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 175af3bb566b14c4…

MALICIOUS

Office (OLE) / .XLS

760.5 KB Created: 2021-01-27 16:09:57 Authoring application: Microsoft Excel
MD5: 39bf58cb0a2b4e4a38e39bcddc984015 SHA-1: 6b495639cf16a3dcd895029f130c49dcf505e5f3 SHA-256: 175af3bb566b14c4cce0926d7985dfe1da3eb040165ea974a6489ee2c300d828
144 Risk Score

Malware Insights

Dridex · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The critical ClamAV detection and high-severity heuristics for VBA p-code auto-execution (Workbook_Open) strongly indicate a malicious dropper. The presence of embedded URLs, many of which are suspicious, suggests the file is intended to download and execute a second-stage payload, consistent with Dridex malware behavior. No VBA macros could be extracted due to an unsupported format, but the execution tokens and script host references are sufficient indicators.

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://demo1.fhmarketing.co.za/wp-content/plugins/easy-google-fonts/views/admin-page/Ck9WKMGH2.php
    • http://nepub.com/Images/VB-on/_notes/97tDuG1zykBanNO.php
    • http://13.250.58.157/wp-content/themes/bridge/woocommerce/cart/amaEW6sLbuJ.php
    • http://boisemeridiandrywall.com/public_html/boisemeridiandrywall.com/wp-content/uploads/2012/TfRJjDVUtl4.php
    • http://veedverksracing.com/wp-content/themes/colormag/SCSS/footer/eDI5l5E8wU.php
    • http://kloudbased.com/update_pack/update_2.1/views/frontend/YybSCeQUMBysP.php
    • https://mail.rigid-group.com/jp/phpformbuilder/plugins/bootstrap-select/dist/3IuERBhaVZsMf.php
    • https://dev.claritycareercounseling.com/wp-content/themes/hexagon/template-parts/footer/IZ07xHMuYU.php
    • https://garven.ca/wp-content/themes/twentyten/images/headers/S1ica6r44Zet5EG.php
    • https://ieponline.org/dev/ieponline/addons/addons/bootstrap/J81OGuD0bOsoD.php
    • http://www.w3.org/1999/XSL/Transform

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