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

Static analysis result for SHA-256 9aeabfee51013455…

MALICIOUS

Office (OLE) / .XLS

970.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 226c0c517456ed6c304553b8445abe0c SHA-1: 38d86da234fd2d89155e32778e65539d9eba9f4f SHA-256: 9aeabfee510134556e74f8fa6c7b8d43af3fcbd75faa36992cc390f578e5b9ec
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious Link

The file contains Excel 4.0 macros, specifically an Auto_Open entry, which is a strong indicator of malicious intent. The document body and macro sheet contain references to 'DocuSign', suggesting a phishing lure. The embedded URL 'http://beachtreepestcontrol.com/viewer/counter.php' is likely used to deliver a second-stage payload or redirect the user to a phishing site. The macro's primary function appears to be executing this URL.

Heuristics 2

  • Excel 4.0 Auto_Open defined name critical OLE_XLM_AUTOOPEN_DEFINEDNAME
    oletools recovered an Auto_Open / Auto_Close entry from an Excel 4.0 macro sheet. The raw BIFF name can be tokenized or partially opaque to byte-string checks, but the recovered macro listing confirms the workbook has an XLM auto-execution entry.
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
7a4e71f3c35eb5ad8d8ed644d4980a335b4d641facc8695ce281666f33280fad		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 2012 bytes

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