Dridex — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 e000722b10e8c041…

MALICIOUS

Office (OLE) / .XLS

759.5 KB Created: 2021-01-13 15:50:22 Authoring application: Microsoft Excel
MD5: 86d17000079ef421a1de6573ad814d5f SHA-1: dfa817f168d0cda2af9a7cedd91e2a5d63d3a65a SHA-256: e000722b10e8c041e57c34ad5d57b9a8ce9802aa371d34779fb0df8474c8bc6e
288 Risk Score

Malware Insights

Dridex · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.002 Spearphishing Attachment

The file contains VBA macros, including a Workbook_Open auto-execution routine, which is a common technique for malware delivery. The presence of GetObject calls and references to Windows Script Host further indicate malicious intent. The ClamAV detection as 'Doc.Dropper.Dridex-9845759-0' strongly suggests this is a Dridex variant, likely acting as a downloader for further malicious payloads from the identified URLs.

Heuristics 9

  • 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.
  • 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 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://wellnessway.co.za/wp-content/plugins/coming-soon-maintenance-mode-from-acurax/css/fonts/vSoOsa1e.php
    • https://orzelconsulting.com/tabo/wp-includes/Text/Diff/Engine/zxZqMg7MRwiAqm.php
    • http://univertech.com/wp-includes/js/tinymce/plugins/charmap/huR9GcNBnM6.php
    • http://findmysounds.com/wp-content/plugins/updraftplus/central/classes/Qexo3HCh.php
    • http://hedgelong.com/NJm75ajGNU.php
    • https://www.dropsitelite.it/wp-content/plugins/woocommerce-services/i18n/json/on0rRPN6iWl5uT.php
    • https://impulsionfood.com/wp-content/plugins/updraftplus/css/tether-shepherd/ipaO64BN.php
    • http://adsofonline.com/wp-includes/js/tinymce/plugins/charmap/SdmAPGR17.php
    • http://klimmen.com.br/wp-content/themes/one-page-express/customizer/kirki/includes/output/property/fOqqPp4HlYJu.php
    • https://cjombogo.com/edenlingerie/wp-content/themes/kallyas/Licensing/VxXWED2rFvEA.php
    • http://www.w3.org/1999/XSL/Transform

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
75a993942a025303cc04f891d2c3e140554ea46f57f93822fb615828998335f0		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 55950 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 125 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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