Dridex — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 a2eaa7c342fd2ccf…

MALICIOUS

Office (OLE) / .XLS

774.0 KB Created: 2021-01-13 15:46:13 Authoring application: Microsoft Excel
MD5: d15a12dd3e09ab095795d38d71325184 SHA-1: 2353f9522e6e201700012b92bcfc438251c08e4d SHA-256: a2eaa7c342fd2ccfc38d94d70e0a946717e3243bfd1ba9533d01c7a503d38b6c
288 Risk Score

Malware Insights

Dridex · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file contains VBA macros, specifically a Workbook_Open macro, which is designed to execute automatically. Heuristics indicate the use of GetObject and Windows Script Host, suggesting the macro attempts to download and execute a second-stage payload from one of the embedded URLs. The ClamAV detection as 'Doc.Dropper.Dridex-9845759-0' strongly supports the Dridex family attribution and the dropper functionality.

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://easyweber.net/layouts/layout1/wp-includes/Requests/Auth/BTjT6wKTxx0.php
    • https://impulsionfood.com/wp-content/plugins/updraftplus/css/tether-shepherd/ipaO64BN.php
    • https://www.bloggingtag.com/wp-includes/js/tinymce/plugins/charmap/B3w9zcmN.php
    • https://sma.shardanovelty.co.in/vendor/psr/log/Psr/Log/kXNcyAm11boPD0d.php
    • http://nilfotech.com/wp-content/themes/twentyseventeen/template-parts/footer/5nVJ6aVS88.php
    • https://www.testsurver.nl/everything/wp-content/uploads/2020/01/zuUDqJvjLWS.php
    • https://amazecorp.com/iS4eqxbadEt.php
    • https://travelspyders.com/wp-content/plugins/cartflows/theme-support/astra/ZaUT8RbcNuB7.php
    • https://pm.marketingnetwork.it/wp-includes/js/tinymce/skins/lightgray/CcV1lWG3FwB1i.php
    • http://adsofonline.com/wp-includes/js/tinymce/plugins/charmap/SdmAPGR17.php
    • http://www.w3.org/1999/XSL/Transform

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
a95529b13491d2dc1984ae0b76ca4769bf4e45aedc0a0f73a051104cdbc50975		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19381 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.