Dridex — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 a06d4ef4e0a8e597…

MALICIOUS

Office (OLE) / .XLS

729.0 KB Created: 2021-01-20 13:13:52 Authoring application: Microsoft Excel
MD5: 7b48a9c4df9d8ec5bcf1fb5f45e30852 SHA-1: 55c510bff1dac29986e792167138ef9a8b0db575 SHA-256: a06d4ef4e0a8e59754b2f1d315a7acd8b5e19cd8dcffae9841ce3822faf94fc4
142 Risk Score

Malware Insights

Dridex · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell

The file is identified as malicious by ClamAV with a signature indicating it is a Dridex dropper. Heuristics indicate the presence of VBA macros that attempt to execute code via Windows Script Host, a common technique for downloading and executing further stages of malware. The embedded URLs are likely associated with the command and control infrastructure or payload delivery.

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://dev.unitedwebgroup.com/jimmychesterfield.com/wp-includes/SimplePie/Decode/HTML/fsbbr2FFDiSdxw.php
    • https://dev1.tritschler-wunschliste.com/vendor/incenteev/composer-parameter-handler/Tests/fixtures/Z8w6OKdbYK.php
    • http://ndfarms.dairycare.xyz/src/js/datatables/jquery/dist/iHGYhwhVz.php
    • https://cwodi.com/otros/sitepad-data/themes/residency/data/vS5kowmij5.php
    • http://cydpm.com.pe/wp-content/themes/spaijd11/functions/Tax-meta-class/iGeUAXE4g.php
    • https://cosm.cc/comments/system/vendor/michelf/php-markdown/OBmIIyNIFdcAb.php
    • http://l2build.co.uk/wp-content/plugins/revslider/includes/framework/ldkA2hJ4Fi.php
    • http://swicoservers.co.uk/js/mage/adminhtml/product/composite/FscTutYQ4wRX.php
    • http://dillondoes.com/Dillon_Does/dillons_website/tutorial_resources/c_tutorials/img/B9rMKewx.php
    • http://ayeyi.biz/wp-includes/sodium_compat/src/Core32/ChaCha20/FmrKsoqNJC8lDaL.php
    • http://www.w3.org/1999/XSL/Transform

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