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

Static analysis result for SHA-256 e16ff7cfe983a96a…

MALICIOUS

Office (OLE) / .DOCX

206.4 KB Created: 2020-10-28 18:42:00 Authoring application: Microsoft Office Word
MD5: 46a738a7ff7e75eb4fb949143cb79475 SHA-1: fc9e0556e4c724e8a6a9a9ab6678359ab92980e6 SHA-256: e16ff7cfe983a96aa9baabd56c3f8ee53b910bfbcd8c69c062417cfad241e2dd
240 Risk Score

Malware Insights

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

The sample is a Microsoft Office document containing a Document_Open VBA macro that executes code via CreateObject. This indicates a downloader or droppper functionality. The ClamAV detection 'Doc.Downloader.Generic-9785156-0' further supports this. No specific family could be identified, but the technique is common for initial access.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9785156-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9785156-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject 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
  • 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://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
e949db65d47346cd391eb9bc49c66a713688cfea31c7cb788a6d1dce1ea9efc6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18584 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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