Dridex — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 0b18ec92065020e7…

MALICIOUS

Office (OLE) / .XLS

786.0 KB Created: 2021-02-03 13:00:39 Authoring application: Microsoft Excel
MD5: 9d6073aed037108448c90e5495969ebd SHA-1: f8fa3a86d5ef21b0a12b7b379de4cff074790f48 SHA-256: 0b18ec92065020e7de0e0508299743783aac3df5d97bdfacb5cbc2118a9a336b
250 Risk Score

Malware Insights

Dridex · confidence 95%

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

The sample is identified as a Dridex dropper by ClamAV. It contains a Workbook_Open VBA macro that uses GetObject and references Windows Script Host, indicating it's designed to execute malicious code. The macro likely downloads and executes a second-stage payload from one of the embedded URLs, a common Dridex tactic. The obfuscated VBA code and the presence of multiple unknown URLs support this assessment.

Heuristics 8

  • 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
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open macro
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
  • 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.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • 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://demo1.fhmarketing.co.za/wp-content/plugins/easy-google-fonts/views/admin-page/uVlCZpjnNJJZj.php
    • http://nouveaumanagermedias.com/wp-content/plugins/jetpack/json-endpoints/jetpack/N3eOt13sn2.php
    • https://www.sosexymagazine.com/wp-content/plugins/sb-image-hover-effects/Elements/Accordion/qqWd83zQHH.php
    • https://trtboost.com/wp-content/uploads/2020/08/rdOr2eyS.php
    • https://kalingakhabar.org/wp-content/plugins/advanced-access-manager/media/css/HACMLVwVMzH.php
    • https://darmoresidencehotel.com/wp-content/plugins/creame-whatsapp-me/public/css/zTGNwfaX.php
    • https://raptuns.com/wp-content/plugins/wp-rocket/views/cache/HmHqRtK5f6sDn.php
    • https://gos.mvlews.com/gudDgZ1hSyEK/tzHCoCgc6L.php
    • https://remalaldhifaf.com/wp-content/uploads/revslider/templates/360panorama/3v9OFJYm3.php
    • https://ibirdsservices.in/mydezign.com/libraries/src/Log/Logger/eoN219eUijdw6.php
    • http://www.w3.org/1999/XSL/Transform

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
c5214d6e311d05381a5edf189c983a47959707abd5d197a2561f333a8c4ecf92		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 52659 bytes

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