Dridex — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 122533a946908e66…

MALICIOUS

Office (OLE) / .XLS

762.5 KB Created: 2021-01-13 15:41:00 Authoring application: Microsoft Excel
MD5: 0e453e483119e62e58471b9ee48a358b SHA-1: 8fb9f595b9474368f7acaf81d15437c0bbf5a578 SHA-256: 122533a946908e660880b2030174008bbb0791e5c5ac92651b24ae0589e8fa3d
250 Risk Score

Malware Insights

Dridex · confidence 95%

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

The sample is a malicious Excel document containing a Workbook_Open VBA macro. This macro is designed to execute obfuscated code, likely to download and run a second-stage payload from one of the embedded URLs. The ClamAV detection name 'Doc.Dropper.Dridex-9845759-0' strongly suggests the Dridex family, which commonly uses this macro-based dropper technique.

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 http://go7wallet.com/app/plugins/cordova-plugin-statusbar/src/browser/HLn3obcR1vMJZNt.php
    • https://orzelconsulting.com/tabo/wp-includes/Text/Diff/Engine/zxZqMg7MRwiAqm.php
    • https://impulsionfood.com/wp-content/plugins/updraftplus/css/tether-shepherd/ipaO64BN.php
    • http://millepharma.com/1/storage/modification/catalog/controller/TuF2Sj1GiNaxO7W.php
    • https://www.dropsitelite.it/wp-content/plugins/woocommerce-services/i18n/json/on0rRPN6iWl5uT.php
    • http://www.sarcars.in/wp-includes/js/tinymce/themes/inlite/Fj1Me7I5aqhuT.php
    • https://www.blackoutthebox.com/wp-content/plugins/woocommerce/src/Admin/NsWEtEuMIGClJnM.php
    • https://teddyburtonburger.com/wp-content/plugins/elementor/modules/dynamic-tags/xvOCtod5agDovX.php
    • https://guides1815.be/admin_bkpe/fckeditor/editor/skins/default/vmLyYWik62.php
    • https://amazecorp.com/iS4eqxbadEt.php
    • http://www.w3.org/1999/XSL/Transform

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
08eaa275b3573f502b1b60d3d44e1095d5ac8dda5465233a7f947e75bc245224		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 65211 bytes

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