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

Static analysis result for SHA-256 c8c8f98b27aa2efb…

MALICIOUS

Office (OLE) / .DOCX

210.5 KB Created: 2020-09-21 19:39:00 Authoring application: Microsoft Office Word
MD5: 6d54843f361c9c6fd0eb46a92f521a27 SHA-1: f2b56013662f659a191c45039f0684dd63b16ee0 SHA-256: c8c8f98b27aa2efb8abf41694df01c65c3aa294fd3c68b033cbf34f66c1d9afd
280 Risk Score

Malware Insights

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

The sample is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that is auto-executed. Heuristics indicate the use of CreateObject and GetObject, common for downloading and executing additional payloads. The ClamAV detection as 'Doc.Downloader.Generic' further supports this. No specific URLs or network indicators were extracted, but the presence of the 'macros.bas' file suggests a macro-based downloader.

Heuristics 8

  • ClamAV: Doc.Downloader.Generic-9764637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764637-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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
  • 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
4078e425aac0675c0d67424bcd647792033cab09565190ea70103f9b942a9f1f		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19109 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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