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

Static analysis result for SHA-256 1abd6c847ffcff9c…

MALICIOUS

Office (OLE) / .DOC

241.0 KB Created: 2020-04-17 06:37:08 Authoring application: Microsoft Excel
MD5: 7407353b3d4a7a4a44778c18bc15e555 SHA-1: 07ac623715b89c26af586b360995f087b1964ce4 SHA-256: 1abd6c847ffcff9cda7023b215c137823afdfd9581101968dff6e6c86bd4e263
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 an attempt to execute arbitrary code. While no specific malicious URLs or scripts were extracted, the presence of the RUN function in an Auto_Open macro is a strong indicator of malicious intent, likely to download and execute a secondary payload.

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
7a63b736622d9e2f3d9698b2937eb33b99415f3fdaabeebab4f04b9b9903a60e		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 140278 bytes

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