Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 24b62f69ade7eef3…

MALICIOUS

Office (OLE)

463.5 KB Created: 2020-12-14 15:31:00 Authoring application: Microsoft Office Word
MD5: ffe8b8b6dc22d4e4de63eea9fb8049c9 SHA-1: 7027f99848bd1d444beacc0808ca941408bbc770 SHA-256: 24b62f69ade7eef306462209f469c880e0decac295d7703c1ca9f0b757054380
288 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File T1071.001 Web Protocols

The sample contains VBA macros, specifically a Document_Open macro that utilizes GetObject and references Windows Script Host, indicating an attempt to execute code. The presence of multiple unknown URLs suggests these are likely used for downloading a secondary payload. The ClamAV detection as 'Doc.Downloader.ChristmasGift-9845923-0' further supports the downloader functionality.

Heuristics 9

  • ClamAV: Doc.Downloader.ChristmasGift-9845923-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.ChristmasGift-9845923-0
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_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://cuencadistributions.com/wp-content/plugins/mailchimp-for-wp/vendor/bin/ekcBKiRsNXoj.php
    • https://richardsilk.com/wp-content/plugins/updraftplus/images/addons-images/Zk8Iv9hirxx0i.php
    • https://simba.simbapropertylistingsea.com/wp-content/themes/twentynineteen/sass/blocks/bVMQHi8npqSri.php
    • https://loctraders.com/wp-includes/sodium_compat/src/Core/Base64/2qoGf0VX94dTFYv.php
    • http://script.rentpayez.com/wwVbFeF1V2mFa.php
    • https://monacofieldson.co.uk/L8A5QV2mw.php
    • https://pccreed.com/n0fBZhgWWCcFo.php
    • http://electrocardsystems.com/plugins/vmcustom/specification/specification/tmpl/R674L7LjbwF.php
    • https://fmpanamby.ga/wp-includes/sodium_compat/namespaced/Core/ChaCha20/mVjwniGX.php
    • https://kabiryogashramlimbdi.com/wp-includes/js/tinymce/plugins/charmap/7nem6JhxNGE.php
    • http://schemas.openxmlformats.org/drawingml/2006/main
    • http://www.w3.org/1999/XSL/Transform

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
dba124b4832968995fb9971cf17a1c9de8e7c2ff6c016899356e6754829303d5		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 52536 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.

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