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

Static analysis result for SHA-256 fbe22d60081f7064…

MALICIOUS

Office (OLE) / .DOCX

235.1 KB Created: 2020-10-28 21:52:00 Authoring application: Microsoft Office Word
MD5: 20842ae05e684d6df5efef0d04b61f9b SHA-1: f5d6903fb55e1d64f84306cf885f0a291af34bbb SHA-256: fbe22d60081f70647f77db615e20d8220e62f4dd7beed3df10be288db8158609
240 Risk Score

Malware Insights

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

The file is a Microsoft Office document containing a Document_Open VBA macro that utilizes CreateObject, indicating an attempt to execute arbitrary code. ClamAV detected this as a downloader. The presence of VBA macros and the auto-execution of code upon opening are strong indicators of a malicious document designed to deliver a secondary payload. The document body content is heavily obfuscated and does not provide clear user-facing text, but the technical indicators are sufficient for a high-confidence assessment.

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
5aa3aad97a35a46de04017100e8aadce01daec323c971d220dcadfd4335841c1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18882 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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