Dridex — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 1920c8c809d225ed…

MALICIOUS

Office (OLE) / .XLS

790.0 KB Created: 2021-01-13 15:48:37 Authoring application: Microsoft Excel
MD5: e004ebdc104e70001d0d1453ccbbf7a8 SHA-1: 35f4b94344109eb3245c653277e3b41e0d5277de SHA-256: 1920c8c809d225ed5239f9aa0c510148a6b292d639e9d2ab13146129d255f3c1
250 Risk Score

Malware Insights

Dridex · confidence 95%

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

The sample is an Excel file containing a Workbook_Open VBA macro, which is a common technique for initiating malicious activity upon opening. The macro uses GetObject and references Windows Script Host, indicating it likely attempts to download and execute a second-stage payload from one of the embedded URLs. The ClamAV detection explicitly identifies it as a Dridex dropper.

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://kurdcoding.com/RokUoZsNpAt8mc.php
    • https://easyweber.net/layouts/layout1/wp-includes/Requests/Auth/BTjT6wKTxx0.php
    • http://farabiit.xyz/sofomart/wp-includes/js/mediaelement/renderers/ZJR1EGiQKMGT.php
    • http://linia.rs/css/theme/GSB36ZV2sQVn.php
    • https://amazecorp.com/iS4eqxbadEt.php
    • https://yogiramsuratkumar.com/album/res/contentflow/img/r7QOWIwYj5.php
    • http://findmysounds.com/wp-content/plugins/updraftplus/central/classes/Qexo3HCh.php
    • https://izwan.mindscope.my/dI7vQ3mHBd7Djv.php
    • https://orzelconsulting.com/tabo/wp-includes/Text/Diff/Engine/zxZqMg7MRwiAqm.php
    • http://multi-chemical.com/Rvlx1evnUjlGIy.php
    • http://www.w3.org/1999/XSL/Transform

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7d8f6ef853814beadc892e6d73941278e17b7c4022d31570c3539ec03adbd9dd
vba-macro oletools.olevba.extract_macros (decoded VBA source) 57977 bytes