Dridex — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 59d0ba2bce05366a…

MALICIOUS

Office (OLE) / .XLS

875.5 KB Created: 2021-01-13 13:28:53 Authoring application: Microsoft Excel
MD5: e452debc1653b43f09dcd98d1f05ba14 SHA-1: d68fb05919682ac456701041a955a42d6198b3ef SHA-256: 59d0ba2bce05366ad852a51dd0e9387ae38ea0493f9ad8368e47a55903117018
288 Risk Score

Malware Insights

Dridex · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically a Workbook_Open auto-execution, strongly indicate a malicious dropper. The presence of GetObject calls and references to wscript suggest the macro is designed to download and execute a second-stage payload from one of the numerous unknown-reputation URLs. The extracted artifact 'macros.bas' further supports the macro-based execution.

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 https://GesDoc.fda.com.pe/wp-content/plugins/members/addons/members-acf-integration/XOIFkw1QtbqgkS.php
    • http://go7wallet.com/app/plugins/cordova-plugin-statusbar/src/browser/HLn3obcR1vMJZNt.php
    • https://abm-it.com/wp-content/plugins/wordpress-seo/vendor/composer/RJiulqq6iCYBeO.php
    • https://wellnessway.co.za/wp-content/plugins/coming-soon-maintenance-mode-from-acurax/css/fonts/vSoOsa1e.php
    • https://yogiramsuratkumar.com/album/res/contentflow/img/r7QOWIwYj5.php
    • http://adsofonline.com/wp-includes/js/tinymce/plugins/charmap/SdmAPGR17.php
    • http://kurdcoding.com/RokUoZsNpAt8mc.php
    • http://alarmascancun.com.mx/wp-content/themes/vw-security-guard/template-parts/header/dvhW3tqNnyOlf.php
    • https://animalairlines.org/wp-content/plugins/wordpress-seo/inc/options/Tk2xzwhpHuJENF.php
    • https://www.bloggingtag.com/wp-includes/js/tinymce/plugins/charmap/B3w9zcmN.php
    • http://www.w3.org/1999/XSL/Transform

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
4db85f61ba9bfd7b97c067ca7a9e7a5d42b2bfbff6c3a4a9167fd1f46e40bf7d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 65721 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.