Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 43bcf974e9c54fb1…

MALICIOUS

Office (OLE) / .DOC

409.5 KB Created: 2020-12-21 12:22:00 Authoring application: Microsoft Office Word
MD5: 062a136cdb4ec4f8aab6b040340717e4 SHA-1: 12b9c767f64a0368dcf6cdaf7440709f98fa0345 SHA-256: 43bcf974e9c54fb1ed877e8b7e5581a229f1879d91abeb4da4a80383caef319b
288 Risk Score

Malware Insights

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

The sample contains a Document_Open macro that utilizes GetObject and Environ calls, indicative of malicious intent. The ClamAV detection as 'Doc.Downloader.ChristmasGift-9845923-0' strongly suggests it functions as a downloader. The embedded URLs are likely used to fetch and execute a second-stage payload.

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 http://leavesofgooddeeds.com/wp-includes/js/tinymce/themes/inlite/HQfVfwoKlw4Qb.php
    • http://www.greenvalues.eu/wp-includes/js/tinymce/themes/inlite/zfaFOUkR.php
    • https://www.dreamworldjdp.com/wp-content/plugins/woocommerce/src/Admin/MSBWURQmgP4.php
    • https://westend.org.ng/QtttntN3QzT3e3v.php
    • https://amazecorp.com/CPGuzBUu.php
    • https://negara-store.ir/wp-content/plugins/megamenu-pro/fonts/custom/iXNYO5PrDIC2k.php
    • http://carlos-anigstein.com.ar/wp-content/themes/twentyfourteen/genericons/font/c79ZiUwf.php
    • https://GesDoc.fda.com.pe/wp-content/plugins/members/addons/members-acf-integration/mvIU5C4mp.php
    • http://klimmen.com.br/wp-content/themes/one-page-express/customizer/kirki/includes/output/property/LLSbdJ41YThbnEI.php
    • https://barefootmind.org/r74myqEOoxW.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
4911ffcf4dac8e485e5ca15a19f10d23f59e11da326ca93e43cde18883db9791		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 44994 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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