Dridex — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 ddb6ba574987bb5c…

MALICIOUS

Office (OLE) / .XLS

780.0 KB Created: 2021-02-01 16:05:44 Authoring application: Microsoft Excel
MD5: 5f0f2afb2d8fdcb8432e762664a497eb SHA-1: 66be01b6f4abdb9bf3ff08d3706d01488057be7e SHA-256: ddb6ba574987bb5c09e49ccf8446d63b192b04297a902081a32e57cd86cf5000
288 Risk Score

Malware Insights

Dridex · confidence 95%

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

The file contains VBA macros, specifically a Workbook_Open auto-execution macro, which is a common delivery mechanism for the Dridex banking trojan. The script uses GetObject and obfuscated strings, indicating it likely downloads and executes a second-stage payload from one of the embedded URLs. The ClamAV detection further supports the Dridex family attribution.

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 http://viksarhdf.org.pk/wordpress/nxQQwuNde.php
    • https://freigthconninc.com/shipdoc/KlFFODDp1Cq.php
    • https://www.ideeadoors.ro/ckeditor/_source/plugins/about/dialogs/c4HZxaZ1Prje.php
    • http://myunpopularpodcast.com/wp-includes/sodium_compat/src/Core32/ChaCha20/UTtj0hWomS.php
    • http://crm.siamitcool.co.th/storage/framework/cache/7b/f4/9x7uVGOk.php
    • https://beuniq.ro/image/cache/catalog/journal3/banners/rekuRy4Euk.php
    • http://afontes.com.br/wp-content/themes/hestia/vendor/codeinwp/WhD0B2YfKEIu5Z5.php
    • https://englb.com/layouts/vlayout/modules/Rss/resources/LL7ImzdW5Lp.php
    • https://akkurtmadencilik.com/wp-includes/js/tinymce/themes/inlite/7hWorDLP.php
    • http://www.w3.org/1999/XSL/Transform
    • http://best-e.atwebpages.com/wp-content/themes/Divi/includes/builder/lcDYmzJl.php

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
0e8ffd54519b94782f59e6b7121b83a76e3b65f77f74b15828857ef572447c94		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 59404 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.

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