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

Static analysis result for SHA-256 9f2559c47f8efa3a…

MALICIOUS

Office (OLE) / .DOC

222.0 KB Created: 2020-04-07 08:55:27 Authoring application: Microsoft Excel
MD5: 08392e0714d03c0a89bbc169e0ba2f50 SHA-1: 7fee430977f3b2cf0553ef1737782d92c57d46f9 SHA-256: 9f2559c47f8efa3ab4d05280df2e6316e6d04865edf318d51a2dc8113542e9e7
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1059.003 Windows Command Shell

The sample is an Excel document containing Excel 4.0 (XLM) macros, indicated by the OLE_XLM_AUTOOPEN heuristic. The OLE_XLM_DANGEROUS_FN heuristic specifically flags the use of dangerous formula APIs, including the RUN function, which is commonly used to execute arbitrary commands. While no specific URLs or scripts were extracted, the presence of these macros strongly suggests an intent to execute malicious code upon opening.

Heuristics 3

  • XLM Auto_Open with dangerous formula APIs high OLE_XLM_DANGEROUS_FN
    Excel 4.0 macro sheet contains an Auto_Open / Auto_Close entry and dangerous XLM formula APIs that can invoke programs, write files, or transfer control without VBA.
  • Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPEN
    Workbook contains an Excel 4.0 macro sheet sub-stream — XLM is rarely seen in modern legitimate workbooks and was a major Office malware vector during 2020-2022.
  • 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://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.microsoft.com/photo/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
6e1be2692687c69128633493416cf980e8fd73e23fff2dba23a167ffcba0237e		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 42532 bytes

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