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

Static analysis result for SHA-256 97fe285e346037cb…

MALICIOUS

Office (OLE) / .DOCX

140.5 KB Created: 2021-01-25 08:47:00 Authoring application: Microsoft Office Word
MD5: 82e5168459c3774fce3f955f44aa0fdf SHA-1: 84caf82885499ce41de4d3a427b701f0862fbae3 SHA-256: 97fe285e346037cbc704b1ee6f2aa1e5ef1e40465256777509257595f1fe054f
200 Risk Score

Malware Insights

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

The file is a malicious DOCX document containing a VBA macro. The 'Document_Open' macro is automatically executed upon opening the document, and it utilizes a GetObject call. ClamAV identifies this as 'Doc.Malware.Valyria-10034158-0', indicating a known malware signature. The macro's primary function is to execute malicious code, likely leading to further compromise.

Heuristics 6

  • ClamAV: Doc.Malware.Valyria-10034158-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Valyria-10034158-0
  • 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.
  • 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
464ee3baa3fefa153b2db059b50fc0b5f7ab283122dc843cd170391807f2939c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 8459 bytes

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