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

Static analysis result for SHA-256 891767e1ae6dd560…

MALICIOUS

Office (OLE) / .DOC

222.0 KB Created: 2020-04-07 08:55:27 Authoring application: Microsoft Excel
MD5: 91f5390bf2bee6bbc2cc375629d06116 SHA-1: bb7c124fe6e577d8bba6b29905cd3480bcf48d3c SHA-256: 891767e1ae6dd560c1fee978ae2e790b28580705754b542536a38d84eafffe08
60 Risk Score

Malware Insights

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

The sample is an Excel document containing Excel 4.0 macros, indicated by the OLE_XLM_AUTOOPEN heuristic. The OLE_XLM_DANGEROUS_FN heuristic specifically flags the use of the RUN function within these macros, suggesting the execution of arbitrary commands. The document body does not provide further context on the specific lure, but the macro's ability to execute commands is the primary threat. No specific malware family could be identified.

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
0fcba8e0662e636ac4b9c660fa2d20b335f7cd25d873477135b6fae33e3e349a		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 42532 bytes

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