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

Static analysis result for SHA-256 4ebbdfc5ac130527…

MALICIOUS

Office (OLE) / .DOC

214.0 KB Created: 2020-04-07 08:55:27 Authoring application: Microsoft Excel
MD5: dfe6f73f0007c71f02a270e058177fd3 SHA-1: bec11c6bf12af04ca9935cc62bd3d456c6586f2b SHA-256: 4ebbdfc5ac13052701225f2a78f5f12382643ce83a2f55abcbf7dec8f260dee5
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell

The sample is an Excel 4.0 macro sheet (XLM) containing an Auto_Open macro. This macro uses dangerous formula APIs, specifically the RUN function, indicating an attempt to execute arbitrary code. The presence of the RUN function is a high-priority indicator of malicious intent, likely to download and execute a second-stage payload. No document body text was available for further context.

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
7edd82d5f0886909480dc5f979c2248be313a7421bec8bb7b7d4149033cf17d2		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 55235 bytes

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