Dridex — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 4d13b0dda7b538ae…

MALICIOUS

Office (OLE) / .XLS

793.5 KB Created: 2021-01-13 15:44:57 Authoring application: Microsoft Excel
MD5: 8db799f159631efb77a2d8c7c0099399 SHA-1: 8f202b18d37b68a26d53a64cc6c4b7b127c6c94b SHA-256: 4d13b0dda7b538ae90a79ac5bbb872f3aba6fd798c2900c4580bc59ae8623b1f
288 Risk Score

Malware Insights

Dridex · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.002 Spearphishing Attachment T1059.001 PowerShell

The sample contains a Workbook_Open macro that utilizes GetObject and references Windows Script Host, indicating it's designed to execute arbitrary code. The ClamAV detection and heuristic firings strongly suggest this is a Dridex dropper. The macro likely downloads and executes a second-stage payload from one of the numerous unknown-reputation URLs found within the sample.

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://www.sarcars.in/wp-includes/js/tinymce/themes/inlite/Fj1Me7I5aqhuT.php
    • http://napletonvolkswagen.com/M/HF840TfNngNdGR.php
    • https://travelspyders.com/wp-content/plugins/cartflows/theme-support/astra/ZaUT8RbcNuB7.php
    • https://www.testsurver.nl/everything/wp-content/uploads/2020/01/zuUDqJvjLWS.php
    • https://www.blackoutthebox.com/wp-content/plugins/woocommerce/src/Admin/NsWEtEuMIGClJnM.php
    • https://sma.shardanovelty.co.in/vendor/psr/log/Psr/Log/kXNcyAm11boPD0d.php
    • https://yogiramsuratkumar.com/album/res/contentflow/img/r7QOWIwYj5.php
    • http://farabiit.xyz/sofomart/wp-includes/js/mediaelement/renderers/ZJR1EGiQKMGT.php
    • https://www.cutandscrew.com/css/images/icons/light/dark/bwvTFSxdRMx8u.php
    • https://wellnessway.co.za/wp-content/plugins/coming-soon-maintenance-mode-from-acurax/css/fonts/vSoOsa1e.php
    • http://www.w3.org/1999/XSL/Transform

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
f0ee4c1968729c565967cb6dbdfa972adcb1f340466ba22ca293d31d5b6abdc2		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 63250 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.