MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
The critical heuristic OLE_XLM_AUTOOPEN_DEFINEDNAME indicates the presence of an Excel 4.0 Auto_Open macro, which is a known execution vector for Emotet. The ClamAV detection further supports this attribution. The macro sheet itself contains numerous string constants and commands that are typical of Emotet downloaders, although the specific download URL is not directly visible in the provided excerpt. The presence of an Auto_Open macro suggests the file is designed to execute malicious code automatically when opened.
Heuristics 3
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Excel 4.0 Auto_Open defined name critical OLE_XLM_AUTOOPEN_DEFINEDNAMEoletools 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.
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ClamAV: Doc.Downloader.EmotetExcel01220-9937164-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Downloader.EmotetExcel01220-9937164-0
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Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPENWorkbook 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.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_macros.txt7f1f89a8b36a750dced08313a4e4f056192a6eac7194357c673dbbd2670a1a18 |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 4219 bytes |
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